umts call-flow-scenarios overview
TRANSCRIPT
1
Contents
• Introduction – Basic stuff..
• Call Flow Scenarios – Node-B initialization and System Information Broadcast – RRC Connection Establishment and Release – Location/Routing Area Update – Circuit Switch Call Setup and Release – Packet Switch Call Setup and Release – Handovers
• Backup – Misc..
2
Introduction
• UE Connection States
• RNC Cell and UE Contexts
• End to End Protocol Stacks (CS and PS Domain)
• Handover Scenarios
3
UE Connection States GSM
Connected Mode
UTRAN RRC Connected
GPRS Packet
Transfer Mode
IDLE Mode
CELL DCH
CELL PCH URA PCH
CELL FACH
Camping on GSM/GPRS Cell Camping on UTRAN Cell
GPRS Packet Idle Mode
UMTS to GSM Inter-System Handover
GSM to UMTS Inter-System Handover
4
UE #M
UE #2
UE #1
DTCH’s
CELL #N
CELL #2
CELL #1
RLC-TM RLC-TM
RNC – Cell and UE Contexts
PHY-Upper
MAC–d
RLC-UM RLC-AM RLC-AM RLC-AM RLC-AM RLC-TM
DCH FP DCH FP DCH FP
DCCH DCCH DCCH DCCH DTCH
DCH DCH
RRC
PDCP
GTP IuUP
PS RAB
CS RAB
MAC–c
RRC
SRB
RLC-TM RLC-UM RLC-TM
SRB #0 SRB #0
CCCH CCCH PCCH
PCH FP FACH FP RACH FP
FACH PCH RACH
SRB #1 SRB #2 SRB #3 SRB #4
DCH’s
MAC-d MAC-c/sh
Flows
5
CS Domain – End to End Protocols
PHY
PHY [E1/T1/STM]
ATM
AAL2
FP
AAL5
SSCOP
SSCF-UNI
STC.2 NBAP
ALCAP
PHY
PHY-upper
MAC
RLC
RRC Codec
MM
CC
PHY [E1/T1/STM]
ATM
AAL2
FP
AAL5
SSCOP
SSCF-UNI
STC.2 NBAP
ALCAP PHY-upper
MAC
RLC
RRC
IuUP
AAL5
SSCOP
SSCF-NNI
STC.1
ALCAP
MTP3-b
SCCP
RANAP
PHY [E1/T1/STM]
ATM
AAL2
IuUP
AAL5
SSCOP
SSCF-NNI
STC.1
ALCAP
MTP3-b
SCCP
RANAP
Codec
MM
CC
UE Node-B RNC 3G-MSC Uu IuB Iu-CS
6
PS Domain – End to End Protocols
PHY
PHY [E1/T1]
ATM
AAL2
FP
AAL5
SSCOP
SSCF-UNI
STC.2 NBAP
ALCAP
PHY
PHY-upper
MAC
RLC
RRC PDCP
GMM
SM
PHY [E1/T1/STM-1]
ATM
AAL2
FP
AAL5
SSCOP
SSCF-UNI
STC.2 NBAP
ALCAP PHY-upper
MAC
RLC
RRC
IP
AAL5
SSCOP
SSCF-NNI
MTP3-b
SCCP
RANAP
PHY [STM-1]
ATM
SSCF-NNI
AAL5
SSCOP
MTP3-b
SCCP
RANAP
GMM
SM
UE Node-B RNC 3G-SGSN Uu IuB Iu-PS
IP
PDCP GTP-U
UDP
IP
GTP-U
UDP
GTP-C
L2
L1
IP
GTP-C
UDP
GTP-C
L2
L1
IP
3G-GGSN Gn
7
Handover Scenarios
UTRAN
RNS
Node-B Node-B
RNC
RNS
Node-B Node-B
RNC
Core Network (CN)
UE
8
Call Flow Scenarios
• Node-B initialization • RRC Connection Establishment and Release • Location/Routing Area Update • Circuit Switch Call Setup and Release • Packet Switch Call Setup and Release • Handovers
9
Node-B Initialization
RNC MSC Node-B UE
Audit Procedure
Cell Setup Procedure
System Information Update
Common TrCH(PRACH, AICH, RACH) Setup
Common TrCH(SCCPCH, PCH/PICH, FACHs) Setup
SIB5 System Information Update
Un-block and Un-barred Cell
10
Channels Main IEs
RNC MSC Node-B UE
Node-B Initialization Audit Procedure: Audit Required Indication Message
Description: Request the CRNC to perform an audit of the logical resources at the Node B. Node-B initiates this procedure after the SSCOP layer is established via the exchange of BGN/BGAK PDU’s.
Main IEs Transaction ID
Channels
SSCF / SSCOP / AAL5
NBAP NBAP Audit Required Indication
[ Transaction ID ]
11
Channels Main IEs
RNC MSC Node-B UE
Node-B Initialization Audit Procedure: Audit Request Message
Description: RNC initiates an audit of the Node-B configuration and status of logical resources, using Audit Request message. A complete audit of a Node B is performed by one or more Audit procedures.
Main IEs Transaction ID Start of audit sequence ind
Channels
SSCF / SSCOP / AAL5
NBAP NBAP Audit Required Indication
[ Transaction ID ]
NBAP NBAP Audit Request
[ Transaction ID, Start of Audit Seq Ind ]
12
Channels Main IEs
RNC MSC Node-B UE
Node-B Initialization Audit Procedure: Audit Response Message
Description: Node-B sends Audit response to RNC, with its current configuration and status of logical resources, using Audit Response message.
Main IEs Transaction ID End of audit sequence ind
Cell Info (Configured) Local Cell Information
Communication Control Port information
Channels
SSCF / SSCOP / AAL5
NBAP NBAP Audit Required Indication
[ Transaction ID ]
NBAP NBAP Audit Request
[ Transaction ID, Start of Audit Seq Ind ]
NBAP NBAP Audit Response
[ End of Audit Seq Ind, Local Resource Info ]
13
Channels Main IEs
RNC MSC Node-B UE
Node-B Initialization Cell Setup Procedure: Resource Status Indication Message
Description: Node-B sends resource indication message to indicate availability or un-availability of local resource (e.g. Local Cell, etc), or change in capability, operational state, etc of resource.
Main IEs Transaction ID No Failure Indication
Local Cell ID Add/Delete Indicator
Channels
SSCF / SSCOP / AAL5
NBAP NBAP Resource Status Indication
[ Local Cell ID, Add/Delete Indicator ]
Audit Procedure
14
Channels Main IEs
RNC MSC Node-B UE
Node-B Initialization Cell Setup Procedure: Cell Setup Request Message
Description: RNC initiates Cell Configuration/Setup, which will use resources in Node-B identified by Local Cell ID, received in Resource Status Indication message.
Main IEs Transaction ID, Global (C-ID) Cell ID, Local (Node-B) Cell ID,
DL/UL Frequency, Maximum Tx Power, Primary Scrambling Code
P-SCH, S-SCH info, PCPICH, SCPICH info, PCCPCH, BCH, etc info..
Channels
SSCF / SSCOP / AAL5
NBAP NBAP Resource Status Indication
[ Local Cell ID, Add/Delete Indicator ]
Audit Procedure
NBAP NBAP Cell Setup Request
[ Global/Local Cell ID, Physical Config. ]
15
Channels Main IEs
RNC MSC Node-B UE
Node-B Initialization Cell Setup Procedure: Cell Setup Response Message
Description: Node B reserves necessary resources and configure the new cell according to received parameters, and on success sends Cell Setup Response to RNC. (On failure, Cell Setup Failure response will be sent!!)
Main IEs Transaction ID
Channels
SSCF / SSCOP / AAL5
NBAP NBAP Resource Status Indication
[ Local Cell ID, Add/Delete Indicator ]
Audit Procedure
NBAP NBAP Cell Setup Request
[ Global/Local Cell ID, Physical Config. ]
NBAP NBAP Cell Setup Response
[ Transaction ID ]
16
Channels Main IEs
RNC MSC Node-B UE
Node-B Initialization Cell Setup Procedure: Block Resource Request Message
Description: Node-B request RNC to block (prohibit use of!!) new configured cell until system information (MIB, SIBs, etc) are updated and broadcast on BCH (i.e. PCCPCH).
Main IEs Transaction ID Global (C-ID) Cell ID Blocking Priority (High!!)
Channels
SSCF / SSCOP / AAL5
NBAP NBAP Resource Status Indication
[ Local Cell ID, Add/Delete Indicator ]
Audit Procedure
NBAP NBAP Cell Setup Request
[ Global/Local Cell ID, Physical Config. ]
NBAP NBAP Cell Setup Response
[ Transaction ID ]
NBAP NBAP Block Resource Request
[ Transaction ID, Blocking Priority ]
17
Channels Main IEs
RNC MSC Node-B UE
Node-B Initialization Cell Setup Procedure: Block Resource Response Message
Description: RNC Blocks respective resource (cell!!), and send successful response to the Node-B.
Main IEs Transaction ID
Channels
SSCF / SSCOP / AAL5
NBAP NBAP Resource Status Indication
[ Local Cell ID, Add/Delete Indicator ]
Audit Procedure
NBAP NBAP Cell Setup Request
[ Global/Local Cell ID, Physical Config. ]
NBAP NBAP Cell Setup Response
[ Transaction ID ]
NBAP NBAP Block Resource Request
[ Transaction ID, Blocking Priority ]
NBAP NBAP Block Resource Response
[ Transaction ID ]
18
Channels Main IEs
RNC MSC Node-B UE
Node-B Initialization System Info Update Procedure: System Info Update Request Message
Description: RNC sends System Information, Scheduling Information, System Information Update time, etc of respective configured cell to Node-B using series of System Information Update Request message.
Main IEs Transaction ID Global (C-ID) Cell ID BCCH Modification Time
MIB, SB, SIB info Segment Info
Channels
SSCF / SSCOP / AAL5
Audit Procedure
NBAP NBAP System Information Update Request
[ SIB segment info. ]
Cell Setup Procedure
19
Channels Main IEs
RNC MSC Node-B UE
Node-B Initialization System Info Update Procedure: System Info Update Response Message
Description: Node-B process received System Information, Scheduling Information, System Information Update time, etc and send successful response using System Information Update Response message.
Main IEs Transaction ID Global (C-ID) Cell ID
Channels
SSCF / SSCOP / AAL5
Audit Procedure
NBAP NBAP System Information Update Request
[ SIB segment info. ]
Cell Setup Procedure
NBAP NBAP System Information Update Response
NBAP NBAP System Information Update Request
[ SIB segment info. ]
NBAP NBAP System Information Update Response
Segment 1
Segment 2
20
Channels Main IEs
RNC MSC Node-B UE
Node-B Initialization System Info Update Procedure: RRC System Information Message
Description: Node-B store and process received system information; and schedules transmission of each segment according to scheduling information, on BCCH: BCH: PCCPCH, in Cell.
Main IEs Master Information Block, Scheduling Block,
System Information Block
Channels
BCCH / BCH / PCCPCH
Audit Procedure
NBAP NBAP System Information Update Request
[ SIB segment info. ]
Cell Setup Procedure
NBAP NBAP System Information Update Response
NBAP NBAP System Information Update Request
[ SIB segment info. ]
NBAP NBAP System Information Update Response
Segment 1
Segment 2
RRC RRC BCCH: System Information
RRC RRC BCCH: System Information
21
Channels Main IEs
RNC MSC Node-B UE
Node-B Initialization Common TrCH Setup Procedure: Common TrCH Setup Request Message
Description: RNC use this procedure to setup Common transport channel(s), along with associated physical channels, on which they are mapped, in Node-B. (e.g. One PRACH, AICH, RACH in single message!!.)
Main IEs Transaction ID, Cell ID, PRACH parameters [ e.g. TFCS, SF, Signatures, etc..]
AICH parameters [ e.g. Channel Codes, Power, etc..]
RACH parameters [ e.g. TrCH ID, TFS, etc..]
Channels
SSCF / SSCOP / AAL5
Audit Procedure
Cell Setup Procedure
System Information Update
NBAP NBAP Common TrCH Setup Request
[PRACH, AICH, RACH]
22
Channels Main IEs
RNC MSC Node-B UE
Node-B Initialization Common TrCH Setup Procedure: Common TrCH Setup Response Message
Description: Node B configure and activate indicated PRACH, AICH and associated RACH transport channel, and sends successful response to RNC (with TLA and Binding ID for RACH IuB AAL2 Bearer!!).
Main IEs Transaction ID,
RACH parameters [ e.g. TrCH ID, Transport Layer Address and Binding ID ]
Channels
SSCF / SSCOP / AAL5
Audit Procedure
Cell Setup Procedure
System Information Update
NBAP NBAP Common TrCH Setup Request
[PRACH, AICH, RACH]
NBAP NBAP Common TrCH Setup Response
[TLA, Binding ID]
23
Channels Main IEs
RNC MSC Node-B UE
Node-B Initialization Common TrCH Setup Procedure: ALCAP Establish Request Message
Description: RNC initiates establishment of AAL2 bearer for RACH, using received Transport Layer Address and Binding ID information, in response from Node-B.
Main IEs OSAID / DSAID (Originating / Destination signalling association ID)
CEID (Path ID + CID) SUGR (Binding ID!!) AAL2 Destination Address of Node-B
Channels
STP.2 / SSCF / SSCOP / AAL5
Audit Procedure
Cell Setup Procedure
System Information Update
NBAP NBAP Common TrCH Setup Request
[PRACH, AICH, RACH]
NBAP NBAP Common TrCH Setup Response
[TLA, Binding ID]
ALCAP ALCAP ALCAP Establish Request (ERQ)
[OSAID,DSAID,SUGR,AAL2 Address]
24
Channels Main IEs
RNC MSC Node-B UE
Node-B Initialization Common TrCH Setup Procedure: ALCAP Establish Confirm Message
Description: Node-B ALCAP verifies received Binding ID; and respond successful establishment of AAL2 bearer using ALCAP confirm message.
Main IEs OSAID DSAID
Channels
STP.2 / SSCF / SSCOP / AAL5
Audit Procedure
Cell Setup Procedure
System Information Update
NBAP NBAP Common TrCH Setup Request
[PRACH, AICH, RACH]
NBAP NBAP Common TrCH Setup Response
[TLA, Binding ID]
ALCAP ALCAP ALCAP Establish Confirm (ECF)
[OSAID,DSAID]
ALCAP ALCAP ALCAP Establish Request (ERQ)
[OSAID,DSAID,SUGR,AAL2 Address]
25
Channels Main IEs
RNC MSC Node-B UE
Node-B Initialization Common TrCH Setup Procedure: Common TrCH Setup Request Message
Description: RNC use this procedure to setup Common transport channel(s), along with associated physical channels, on which they are mapped, in Node-B. (e.g. One SCCPCH, PICH, PCH, FACH(s) in single message!!.)
Main IEs Transaction ID, Cell ID, SCCPCH parameters [e.g. ID, TFCS, SF, Codes, etc..]
PCH parameters [ e.g. ID, TFS,Window(ToAWS, ToAWE), PICH Code, Max Power, .. ]
FACH(s) parameters [ e.g. ID, TFS, Window(ToAWS,
ToAWE), Max Power, .. ]
Channels
SSCF / SSCOP / AAL5
Audit Procedure
Cell Setup Procedure
System Information Update
Common TrCH(PRACH, AICH, RACH) Setup
NBAP NBAP Common TrCH Setup Request
[ SCCPCH, PCH+PICH, FACH(s) ]
26
Channels Main IEs
RNC MSC Node-B UE
Node-B Initialization Common TrCH Setup Procedure: Common TrCH Setup Response Message
Description: Node B configure and activate indicated SCCPCH, PICH, associated PCH and FACH(s) transport channel, and sends successful response to RNC (with TLA and Binding ID for PCH, FACH IuB AAL2 Bearer!!).
Main IEs Transaction ID,
PCH parameters [ e.g. TrCH ID, Transport Layer Address and Binding ID ]
FACH(s) parameters [ e.g. TrCH ID, Transport Layer Address and Binding ID ]
Channels
SSCF / SSCOP / AAL5
Audit Procedure
Cell Setup Procedure
System Information Update
NBAP NBAP Common TrCH Setup Request
[ SCCPCH, PCH+PICH, FACH(s) ]
NBAP NBAP Common TrCH Setup Response
[TLA(s), Binding ID(s)]
Common TrCH(PRACH, AICH, RACH) Setup
27
Channels Main IEs
RNC MSC Node-B UE
Node-B Initialization Common TrCH Setup Procedure: ALCAP Establish Request Message
Description: RNC initiates establishment of AAL2 bearer for PCH and FACH(s), using received respective Transport Layer Address and Binding ID information, in response from Node-B.
Main IEs OSAID DSAID + CEID
SUGR (Binding ID!!) AAL2 Destination Address of Node-B
Channels
STP.2 / SSCF / SSCOP / AAL5
Audit Procedure
Cell Setup Procedure
System Information Update
NBAP NBAP Common TrCH Setup Request
[ SCCPCH, PCH+PICH, FACH(s) ]
NBAP NBAP Common TrCH Setup Response
[TLA(s), Binding ID(s)]
ALCAP ALCAP ALCAP ERQ
[OSAID,DSAID,SUGR,AAL2 Address]
Common TrCH(PRACH, AICH, RACH) Setup
For PCH & FACH(s) bearers
28
Channels Main IEs
RNC MSC Node-B UE
Node-B Initialization Common TrCH Setup Procedure: ALCAP Establish Confirm Message
Description: Node-B ALCAP verifies received Binding ID; and respond successful establishment of AAL2 bearer using ALCAP confirm message.
Main IEs OSAID DSAID
Channels
STP.2 / SSCF / SSCOP / AAL5
Audit Procedure
Cell Setup Procedure
System Information Update
NBAP NBAP Common TrCH Setup Request
[ SCCPCH, PCH+PICH, FACH(s) ]
NBAP NBAP Common TrCH Setup Response
[TLA(s), Binding ID(s)]
ALCAP ALCAP ALCAP Establish Request (ERQ)
[OSAID,DSAID,SUGR,AAL2 Address]
ALCAP ALCAP ALCAP Establish Confirm (ECF)
[OSAID,DSAID]
Common TrCH(PRACH, AICH, RACH) Setup
For PCH & FACH(s) bearers
29
Channels Main IEs
RNC MSC Node-B UE
Node-B Initialization Common TrCH Setup Procedure: FP DL Synchronization Frame
Description: After successful establishment of AAL2 bearer, at RNC, PCH and FACH(s) FPs initiates L2 synchronization by sending DL synchronization control frame with current CFN.
Main IEs CFN (Connection Frame Number)
Channels
FP / AAL2
Audit Procedure
Cell Setup Procedure
System Information Update
NBAP NBAP Common TrCH Setup Request
[ SCCPCH, PCH+PICH, FACH(s) ]
NBAP NBAP Common TrCH Setup Response
[TLA(s), Binding ID(s)]
ALCAP ALCAP ALCAP Establish Request (ERQ)
[OSAID,DSAID,SUGR,AAL2 Address]
ALCAP ALCAP ALCAP Establish Confirm (ECF)
[OSAID,DSAID]
FP FP DL Synchronization
[ CFN ]
Common TrCH(PRACH, AICH, RACH) Setup
For PCH & FACH(s) bearers
30
Channels Main IEs
RNC MSC Node-B UE
Node-B Initialization Common TrCH Setup Procedure: FP UL Synchronization Frame
Description: Node-B RACH FP verifies relationship of SFN with received CFN, and respond back with UL synchronization control frame, containing Time of Arrival [ToA - required timing adjustment!!] information.
Main IEs CFN (Connection Frame Number), ToA [Time of Arrival]
Channels
FP / AAL2
Audit Procedure
Cell Setup Procedure
System Information Update
NBAP NBAP Common TrCH Setup Request
[ SCCPCH, PCH+PICH, FACH(s) ]
NBAP NBAP Common TrCH Setup Response
[TLA(s), Binding ID(s)]
ALCAP ALCAP ALCAP Establish Request (ERQ)
[OSAID,DSAID,SUGR,AAL2 Address]
ALCAP ALCAP ALCAP Establish Confirm (ECF)
[OSAID,DSAID]
FP FP DL Synchronization
[ CFN ]
FP FP UL Synchronization
[ CFN, ToA ]
Common TrCH(PRACH, AICH, RACH) Setup
For PCH & FACH(s) bearers
31
Channels Main IEs
RNC MSC Node-B UE
Node-B Initialization System Info Update Procedure: System Info Update Request Message
Description: After successful setup of all common physical and transport channels for a Cell, RNC sends System Information, Scheduling Information, etc (i.e. SIB5 [& SIB6!!] of respective configured cell) to Node-B.
Main IEs Transaction ID Global (C-ID) Cell ID
BCCH Modification Time Reference to other SIBs
Segment Info [SIB5 with PRACH info, SCCPCH info, AICH info, PICH info, etc ..]
Channels
SSCF / SSCOP / AAL5
Audit Procedure
Cell Setup Procedure
System Information Update
Common TrCH(PRACH, AICH, RACH) Setup
Common TrCH(SCCPCH, PCH/PICH, FACHs) Setup
NBAP NBAP System Information Update Request
[ SIB5 segment info. ]
32
Channels Main IEs
RNC MSC Node-B UE
Node-B Initialization System Info Update Procedure: System Info Update Request Message
Description: Node-B process received SIB5 (and SIB6!!) System Information, Scheduling Information, System Information Update time, etc and send successful response to RNC.
Main IEs Transaction ID Global (C-ID) Cell ID
Channels
SSCF / SSCOP / AAL5
Audit Procedure
Cell Setup Procedure
System Information Update
Common TrCH(PRACH, AICH, RACH) Setup
Common TrCH(SCCPCH, PCH/PICH, FACHs) Setup
NBAP NBAP System Information Update Request
[ SIB5 segment info. ]
NBAP NBAP System Information Update Response
33
Channels Main IEs
RNC MSC Node-B UE
Node-B Initialization System Info Update Procedure: System Info Update Request Message
Description: Node-B sends resource indication message to indicate that it has successfully change cell capacity and communication control port operational state (and ready to unblock cell!!)
Main IEs Transaction ID Communication Control Port ID
Channels
SSCF / SSCOP / AAL5
Audit Procedure
Cell Setup Procedure
System Information Update
Common TrCH(PRACH, AICH, RACH) Setup
Common TrCH(SCCPCH, PCH/PICH, FACHs) Setup
NBAP NBAP Resource Status Indication [ Communication Control port ID ]
SIB5 System Information Update
34
Channels Main IEs
RNC MSC Node-B UE
Node-B Initialization System Info Update Procedure: System Info Update Request Message
Description: Node-B sends resource unblock indication message to RNC, to indicate that respective Cell is operational and can be unblocked.
Main IEs Transaction ID Global (C-ID) Cell ID
Channels
SSCF / SSCOP / AAL5
Audit Procedure
Cell Setup Procedure
System Information Update
Common TrCH(PRACH, AICH, RACH) Setup
Common TrCH(SCCPCH, PCH/PICH, FACHs) Setup
NBAP NBAP Resource Status Indication [ Communication Control port ID ]
NBAP NBAP Unblock Resource Indication
[ C-ID ]
SIB5 System Information Update
35
Channels Main IEs
RNC MSC Node-B UE
Node-B Initialization System Info Update Procedure: System Info Update Request Message
Description: After successful unblocking cell resource, RNC sends updated SIB3 System Information (with cell status as unbarred!!) to Node-B.
Main IEs Transaction ID Global (C-ID) Cell ID BCCH Modification Time
Reference to other SIBs Segment info [ SIB3 with Cell status unbarred!! ]
Channels
SSCF / SSCOP / AAL5
Audit Procedure
Cell Setup Procedure
System Information Update
Common TrCH(PRACH, AICH, RACH) Setup
Common TrCH(SCCPCH, PCH/PICH, FACHs) Setup
NBAP NBAP Resource Status Indication [ Communication Control port ID ]
NBAP NBAP Unblock Resource Indication
[ C-ID ]
NBAP NBAP System Information Update Request
[ SIB3 segment info. ]
SIB5 System Information Update
36
Channels Main IEs
RNC MSC Node-B UE
Node-B Initialization System Info Update Procedure: System Info Update Request Message
Description: Node-B process received SIB3 System Information, Scheduling Information, System Information Update time, etc and send successful response to RNC.
Main IEs Transaction ID Global (C-ID) Cell ID
Channels
SSCF / SSCOP / AAL5
Audit Procedure
Cell Setup Procedure
System Information Update
Common TrCH(PRACH, AICH, RACH) Setup
Common TrCH(SCCPCH, PCH/PICH, FACHs) Setup
NBAP NBAP Resource Status Indication [ Communication Control port ID ]
NBAP NBAP Unblock Resource Indication
[ C-ID ]
NBAP NBAP System Information Update Request
[ SIB3 segment info. ]
NBAP NBAP System Information Update Response
SIB5 System Information Update
37
Channels Main IEs
RNC MSC Node-B UE
Node-B Initialization Node-B initialization with operational Cell Context!!..
Main IEs Channels
Audit Procedure
Cell Setup Procedure
System Information Update
Common TrCH(PRACH, AICH, RACH) Setup
Common TrCH(SCCPCH, PCH/PICH, FACHs) Setup
SIB5 System Information Update
Un-block and Un-barred Cell
38
RRC Connection Management
RNC MSC Node-B UE
Random Access Procedure
RRC Connection Request
UE Context Setup
RRC Connection Setup
RRC Connection Release
UE Context Cleanup
39
Channels Main IEs
RNC MSC Node-B UE
RRC Connection Management Random Access Procedure: System Information Broadcast
Description: Node-B transmits system information blocks according to scheduling information, on BCCH: BCH: PCCPCH, in Cell. UE acquires system information blocks required for initial access in idle mode.
Main IEs Master Information Block, Scheduling Block,
System Information Block [SIB 1, SIB 2, SIB 3, etc..]
Channels
BCCH / BCH / PCCPCH
RRC RRC BCCH: System Information
RRC RRC BCCH: System Information
40
Channels Main IEs
RNC MSC Node-B UE
RRC Connection Management Random Access Procedure: Physical Layer Access attempts
Description: UE use cell system information to determine common physical channel configuration, initial power, etc.. It use received PCPICH power, calculates initial uplink power (open loop!!) and initiate access to network.
Main IEs Signature Sequence
Channels
PRACH
RRC RRC BCCH: System Information
RRC RRC BCCH: System Information
PHY PHY Preamble
PHY Preamble
PHY Preamble
Wait for AICH response, No response, Step-up power!! Retransmit Preamble
Wait for AICH response, No response, Step-up power!! Retransmit Preamble
41
Channels Main IEs
RNC MSC Node-B UE
RRC Connection Management Random Access Procedure: Physical Layer Access detection
Description: UE use cell system information to determine common physical channel configuration, initial power, etc.. It use received PCPICH power, calculates initial uplink power (open loop!!) and initiate access to network.
Main IEs AICH Response Sequence
Channels
AICH
RRC RRC BCCH: System Information
RRC RRC BCCH: System Information
PHY PHY Preamble
PHY Preamble
PHY Preamble
Wait for AICH response, No response, Step-up power!! Retransmit Preamble
Wait for AICH response, No response, Step-up power!! Retransmit Preamble
PHY PHY Access Indication
42
Channels Main IEs
RNC MSC Node-B UE
RRC Connection Management Initial Access Request: RRC Connection Request Message
Description: On successful physical layer access detection, UE transmits RRC Connection Request message to network on RACH : PRACH.
Main IEs Initial UE identity [ e.g. IMSI, TMSI, P-TMSI, IMEI, etc. ]
Establishment Cause [ e.g. Originating or Terminating voice,data..;Emergency, etc]
Measurement Information
Channels
CCCH : RACH : PRACH
Random Access Procedure
RRC RRC CCCH: RRC Connection Request
PHY PHY RACH Message
[ Data, Control (TFCI) ]
FP FP RACH Data Frame
[ CFN, TFI, TB(s), CRCI indicator ]
RLC
MAC RLC
MAC Process received PRACH data; Decode it using control info(TFCI);
43
Channels Main IEs
RNC MSC Node-B UE
RRC Connection Management UE Context Setup Procedure: Radio Link Setup Request Message
Description: On reception of RRC Connection Request message, RNC selects L1, L2 parameters according to UE RRC state and allocate resources. If selected RRC state Cell DCH, initiates RL setup towards Node-B.
Main IEs Cell ID, Comm Ctxt ID, UL/DL DPCH info [ e.g. Codes, TFCS, etc ]
DCH info [ e.g. TrCH ID, UL/DL TFS, Window(ToAWS,
ToAWE), Priority, etc..]
Power Information [ e.g. Initial power, SIR target, Max/Min DL power, etc ]
Channels
SSCF / SSCOP / AAL5
Random Access Procedure
RRC Connection Setup Request
NBAP NBAP Radio Link Setup Request [ UL/DL DPCH info, RL info, DCH ]
44
Channels Main IEs
RNC MSC Node-B UE
RRC Connection Management UE Context Setup Procedure: Radio Link Setup Response Message
Description: On reception Radio Link Setup Request message, Node-B reserves necessary resources and configure new radio link(s) according to received parameters, and respond success to RNC.
Main IEs Transaction ID, Node-B Communication Context ID
DCH parameters [ e.g. TrCH ID, Transport Layer Address and Binding ID ]
Channels
SSCF / SSCOP / AAL5
Random Access Procedure
RRC Connection Setup Request
NBAP NBAP Radio Link Setup Request
NBAP NBAP Radio Link Setup Response [ Comm Ctxt info, TLA, Binding ID ]
45
Channels Main IEs
RNC MSC Node-B UE
RRC Connection Management UE Context Setup Procedure: ALCAP Establish Request/Confirm Message
Description: RNC initiates AAL2 bearer establishment for DCH, using received AAL2 TLA and Binding ID. Node-B ALCAP verifies received Binding ID; and respond successful establishment with ALCAP Confirm msg.
Main IEs OSAID, DSAID + CEID, SUGR (Binding ID!!), AAL2 destination Address
OSAID, DSAID
Channels
SSCF / SSCOP / AAL5
Random Access Procedure
RRC Connection Setup Request
NBAP NBAP Radio Link Setup Request
NBAP NBAP Radio Link Setup Response
ALCAP ALCAP ALCAP Establish Request (ERQ)
[OSAID,DSAID,SUGR,AAL2 Address]
ALCAP ALCAP ALCAP Establish Confirm (ECF)
[OSAID,DSAID]
46
Channels Main IEs
RNC MSC Node-B UE
RRC Connection Management UE Context Setup Procedure: FP DL/UL Synchronization Frame
Description: At RNC, DCH FP initiates L2 synchronization using DL synchronization Control Frame with CFN. Node-B DCH FP verifies CFN to SFN relationship; & respond back with ToA(required timing adjustment) Info.
Main IEs CFN (Connection Frame Number)
CFN (Connection Frame Number), ToA (Time of Arrival)
Channels
FP / AAL2
Random Access Procedure
RRC Connection Setup Request
NBAP NBAP Radio Link Setup Request
NBAP NBAP Radio Link Setup Response
ALCAP ALCAP ALCAP Establish Request (ERQ)
ALCAP ALCAP ALCAP Establish Confirm (ECF)
FP FP DL Synchronization
[ CFN ]
FP FP UL Synchronization
[ CFN, ToA ]
47
Channels Main IEs
RNC MSC Node-B UE
RRC Connection Management Initial Access Response: RRC Connection Setup Message
Description: On successful setup of UE context, RNC sends RRC Connection Setup message to UE over CCCH : FACH : SCCPCH, with information about allocated resources/configuration.
Main IEs Received Initial UE ID, RRC State [DCH, FACH] RNTIs [U-RNTI, C-RNTI]
SRB info [RLC, mapping], UL/DL DCH info [e.g. ID, TFS, TFCS, etc..]
RL info [e.g. Frequency, Codes, etc] Power Info, etc..
Channels
CCCH : FACH : SCCPCH
Random Access Procedure
RRC Connection Setup Request
UE Context Setup
RRC RRC CCCH: RRC Connection Setup
PHY PHY SCCPCH Message [ Data, Control (TFCI) ]
FP FP FACH Data Frame(s)
[ CFN, TFI, TB(s) ]
RLC
MAC RLC
MAC RRC Connection Setup message would be split into several TB(s), hence this sequence will repeat!!
48
Channels Main IEs
RNC MSC Node-B UE
RRC Connection Management Initial Access Response: RRC Connection Setup Complete Message
Description: On reception of RRC Connection Setup message, UE configures its L1, L2 according RRC state and respective received parameters, and responds to RNC using RRC Connection Setup Complete message.
Main IEs RRC transaction ID, START List [CS, PS]
Radio Access Capabilities [e.g. Basic, extended, inter-system, etc]
Channels
DCCH : DCH : DPDCH
Random Access Procedure
RRC Connection Setup Request
UE Context Setup
RRC RRC CCCH: RRC Connection Setup
PHY PHY SCCPCH Message [ Data, Control (TFCI) ]
FP FP FACH Data Frame(s)
[ CFN, TFI, TB(s) ]
RLC
MAC RLC
MAC RRC Connection Setup message would be split into several TB(s), hence this sequence will repeat!!
RRC RRC DCCH: RRC Connection Setup Complete
RLC
MAC
PHY PHY DPCH [DPDCH + DPCCH] [ Data, Control (TFCI,TFC,Pilot) ]
FP FP DCH Data Frame
[ CFN, TFI, TB(s), CRCI indicator ]
RLC
MAC
49
Channels Main IEs
RNC MSC Node-B UE
RRC Connection Management RRC Connection Release: RRC Connection Release Message
Description: RNC anytime can release RRC Connection in Cell FACH or Cell DCH state, by sending RRC Connection Release message on DCCH. [exceptionally on CCCH, when UE in Cell FACH state!!]
Main IEs RRC transaction ID,
Release Cause[e.g. normal, inactivity, directed re-establishment, congestion, ..]
Rplmn information
Channels
DCCH : DCH : DPDCH
Random Access Procedure
RRC Connection Setup Request
UE Context Setup
RRC Connection Setup
RRC RRC DCCH: RRC Connection Release
PHY PHY DPCH [DPDCH + DPCCH] [ Data, Control (TFCI,TPC,Pilot) ]
FP FP DCH Data Frame(s)
[ CFN, TFI, TB(s) ]
RLC
MAC RLC
MAC
50
Channels Main IEs
RNC MSC Node-B UE
RRC Connection Management RRC Connection Release: RRC Connection Release Complete Message
Description: On reception of RRC Connection Release message, responds to RNC with RRC Connection Release Complete message on DCCH, terminates RRC Connection and move to idle state.
Main IEs RRC transaction ID
Channels
DCCH : DCH : DPDCH
Random Access Procedure
RRC Connection Setup Request
UE Context Setup
RRC Connection Setup
RRC RRC DCCH: RRC Connection Release
PHY PHY DPCH [DPDCH + DPCCH] [ Data, Control (TFCI,TPC,Pilot) ]
FP FP DCH Data Frame(s)
[ CFN, TFI, TB(s) ]
RLC
MAC RLC
MAC
RRC RRC DCCH: RRC Connection Release Complete
RLC
MAC
PHY PHY DPCH [DPDCH + DPCCH] [ Data, Control (TFCI,TFC,Pilot) ]
FP FP DCH Data Frame
[ CFN, TFI, TB(s), CRCI indicator ]
RLC
MAC
51
Channels Main IEs
RNC MSC Node-B UE
RRC Connection Management UE Context Cleanup: NBAP Radio Link Deletion Request Message
Description: On reception of RRC Connection Release Complete message, RNC initiates cleanup of UE context. If RRC Connection in Cell DCH state, initiate Radio Link Deletion Request towards Node-B.
Main IEs Transaction ID, CRNC Comm Ctxt ID, Node-B Comm Ctxt ID,
RL ID(s)
Channels
SSCF : SSCOP : AAL5
Random Access Procedure
RRC Connection Setup Request
UE Context Setup
RRC Connection Setup
RRC Connection Release
NBAP NBAP Radio Link Deletion Request
[ RL ID(s) ]
52
Channels Main IEs
RNC MSC Node-B UE
RRC Connection Management UE Context Cleanup: NBAP Radio Link Deletion Response Message
Description: On reception Radio Link Deletion Request, Node-B release all resources associated with respective RL Ids. On success, respond with Radio Link Deletion Response message to RNC.
Main IEs Transaction ID, CRNC Communication Context ID
Channels
SSCF : SSCOP : AAL5
Random Access Procedure
RRC Connection Setup Request
UE Context Setup
RRC Connection Setup
RRC Connection Release
NBAP NBAP Radio Link Deletion Request
NBAP NBAP Radio Link Deletion Response
[ CRNC Comm Ctxt ID ]
53
Channels Main IEs
RNC MSC Node-B UE
RRC Connection Management UE Context Cleanup: ALCAP Release Request/Confirm Message
Description: After RL deletion, RNC initiate AAL2 bearer release allocated for DCH data stream. RNC ALCAP request release with Release Request message, Node-B ALCAP confirms it with Release Confirm message.
Main IEs DSAID Cause
DSAID
Channels
STC.2 / SSCF / SSCOP / AAL5
Random Access Procedure
RRC Connection Setup Request
UE Context Setup
RRC Connection Setup
RRC Connection Release
NBAP NBAP Radio Link Deletion Request
NBAP NBAP Radio Link Deletion Response
ALCAP ALCAP ALCAP Release Request
[ DSAID, Cause ]
ALCAP ALCAP ALCAP Release Confirm
[ DSAID ]
54
Channels Main IEs
RNC MSC Node-B UE
RRC Connection Management RRC Connection Established and Released!!..
Main IEs Channels
Random Access Procedure
RRC Connection Setup Request
UE Context Setup
RRC Connection Setup
RRC Connection Release
UE Context Cleanup
55
Mobility Management – Location Update
RNC MSC/VLR Node-B UE
RRC Connection Establishment
Signalling Connection Establishment (Location Update Request Procedure)
Identification /Authentication / Security Procedure (Optional!!)
Location Update Accept (Optional TMSI Reallocation!!) Procedure
RRC Connection Release
UE Context Cleanup
Iu Connection Release
56
Channels Main IEs
RNC MSC Node-B UE
Mobility Management – Location Update
Signalling Connection Establishment: RRC Initial Direct Transfer Message
Description: On successful establishment of RRC Connection, UE sends first NAS message, enclosed in RRC Initial Direct Transfer message on DCCH.
Main IEs RRC transaction ID, CN Domain Identity [e.g. CS, PS],
NAS Message [ Encoded – Update Type, Cipher Key Seq No, LAI, Classmark, .. ]
Measurement Results
Channels
DCCH : DCH : DPDCH
RRC Connection Establishment
RRC RRC DCCH: Initial Direct Transfer
[ CN Domain ID, NAS Message ]
57
Channels Main IEs
RNC MSC Node-B UE
Mobility Management – Location Update
Signalling Connection Establishment: RANAP Initial UE Message
Description: RNC uses received CN domain identity in Initial Direct Transfer Message, and initiate Iu (Iu-CS) connection setup, and transfer of received Initial UE NAS message using RANAP to core network (MSC/VLR).
Main IEs CN Domain ID [CS or PS] Location Info [ e.g. LAI, RAC, SAI, etc..]
NAS–PDU [ Encoded – Update Type, Cipher Key Seq No, LAI, Classmark, .. ]
Global RNC ID Iu Signalling Connection Identifier
Channels
SCCP : MTP3b : SAAL : AAL5
RRC Connection Establishment
RRC RRC DCCH: Initial Direct Transfer
[ CN Domain ID, NAS Message ]
RANAP RANAP Initial UE Message
[ CN Domain ID, LAI, NAS-PDU ]
SCCP SCCP Connection Confirm (CC)
[ SRC/DST References ]
SCCP SCCP Connection Request (CR)
[ Reference, SRC/DST Add, User Data ]
Iu (Iu-CS!!) Connection Setup; SCCP carry RANAP Initial UE Message
piggybacked in SCCP CR PDU!! All subsequent RANAP messages will be
sent over this established SCCP Connection!!
58
Channels Main IEs
RNC MSC Node-B UE
Mobility Management – Location Update
Identification Procedure: RANAP Direct Transfer Message
Description: MM (optionally!!) initiates Identification Procedure, with Identity Request message. MSC forwards Identity Request message, encoded NAS PDU, using RANAP Direct Transfer Message to RNC.
Main IEs NAS–PDU [ Encoded – Identity Request, Identity Type (e.g. IMSI, TMSI, etc)]
Channels
SCCP : MTP3b : SAAL : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Location Update Request Procedure)
RANAP RANAP Direct Transfer
[ NAS PDU (Identity Request!!) ]
59
Channels Main IEs
RNC MSC Node-B UE
Mobility Management – Location Update
Identification Procedure: RRC Downlink Direct Transfer Message
Description: RNC RRC encodes received NAS PDU, in RANAP Direct Transfer message, into RRC Downlink Direct Transfer message and send it to UE on DCCH (SRB-3).
Main IEs RRC Transaction ID, CN Domain ID [CS or PS],
NAS Message [ Encoded – Identity Request, Identity Type (e.g. IMSI, TMSI, etc)]
Channels
DCCH : DCH : DPDCH
RRC Connection Establishment
Signalling Connection Establishment (Location Update Request Procedure)
RRC RRC DCCH: Downlink Direct Transfer
[ CN Domain ID, NAS Message ]
RANAP RANAP Direct Transfer
[ NAS PDU (Identity Request!!) ]
60
Channels Main IEs
RNC MSC Node-B UE
Mobility Management – Location Update
Identification Procedure: RRC Uplink Direct Transfer Message
Description: UE (MM) responds with Identity Response, encoded NAS PDU, in RRC Uplink Direct Transfer message on DCCH (SRB-3).
Main IEs RRC Transaction ID, CN Domain ID [CS or PS],
NAS Message [ Encoded – Identity Response, Requested Identity Value ]
Channels
DCCH : DCH : DPDCH
RRC Connection Establishment
Signalling Connection Establishment (Location Update Request Procedure)
RRC RRC DCCH: Downlink Direct Transfer
[ CN Domain ID, NAS Message ]
RANAP RANAP Direct Transfer
[ NAS PDU (Identity Request!!) ]
RRC RRC DCCH: Uplink Direct Transfer
[ CN Domain ID, NAS Message ]
61
Channels Main IEs
RNC MSC Node-B UE
Mobility Management – Location Update
Identification Procedure: RANAP Direct Transfer Message
Description: RNC forwards received NAS PDU, to Core Network (MSC/VLR), using RANAP Direct Transfer Message.
Main IEs NAS Message [ Encoded – Identity Response, Requested Identity Value ]
Location Info [ e.g. LAI, RAC, SAI, etc..] optional
Channels
SCCP : MTP3b : SAAL : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Location Update Request Procedure)
RRC RRC DCCH: Downlink Direct Transfer
[ CN Domain ID, NAS Message ]
RANAP RANAP Direct Transfer
[ NAS PDU (Identity Request!!) ]
RRC RRC DCCH: Uplink Direct Transfer
[ CN Domain ID, NAS Message ]
RANAP RANAP Direct Transfer
[ NAS PDU (Identity Response!!) ]
62
Channels Main IEs
RNC MSC Node-B UE
Mobility Management – Location Update
Authentication Procedure: RANAP Direct Transfer Message
Description: MM (optionally!!) initiates Authentication Procedure, with Identity Request message. MSC forwards Authentication Request message, encoded NAS PDU, using RANAP Direct Transfer Message to RNC.
Main IEs NAS–PDU [ Encoded – Authentication Request, CKSN, RAND, AUTN, .. ]
Channels
SCCP : MTP3b : SAAL : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Location Update Request Procedure)
RANAP RANAP Direct Transfer
[ NAS PDU (Authentication Request!!) ]
Identification Procedure
63
Channels Main IEs
RNC MSC Node-B UE
Mobility Management – Location Update
Authentication Procedure: RRC Downlink Direct Transfer Message
Description: RNC RRC encodes received NAS PDU, in RANAP Direct Transfer message, into RRC Downlink Direct Transfer message and send it to UE on DCCH (SRB-3).
Main IEs RRC Transaction ID, CN Domain ID [CS or PS],
NAS Message [ Encoded – Authentication Request, CKSN, RAND, AUTN, .. ]
Channels
DCCH : DCH : DPDCH
RRC Connection Establishment
Signalling Connection Establishment (Location Update Request Procedure)
RRC RRC DCCH: Downlink Direct Transfer
[ CN Domain ID, NAS Message ]
RANAP RANAP Direct Transfer
[ NAS PDU (Authentication Request!!) ]
Identification Procedure
64
Channels Main IEs
RNC MSC Node-B UE
Mobility Management – Location Update
Authentication Procedure: RRC Uplink Direct Transfer Message
Description: UE (MM) responds with Authentication Response, encoded NAS PDU, in RRC Uplink Direct Transfer message on DCCH (SRB-3).
Main IEs RRC Transaction ID, CN Domain ID [CS or PS],
NAS Message [ Encoded – Authentication Response, SRES (UE Calculated!!) ]
Channels
DCCH : DCH : DPDCH
RRC Connection Establishment
Signalling Connection Establishment (Location Update Request Procedure)
RRC RRC DCCH: Downlink Direct Transfer
[ CN Domain ID, NAS Message ]
RANAP RANAP Direct Transfer
[ NAS PDU (Authentication Request!!) ]
RRC RRC DCCH: Uplink Direct Transfer
[ CN Domain ID, NAS Message ]
Identification Procedure
65
Channels Main IEs
RNC MSC Node-B UE
Mobility Management – Location Update
Authentication Procedure: RANAP Direct Transfer Message
Description: RNC forwards received NAS PDU, to Core Network (MSC/VLR), using RANAP Direct Transfer Message.
Main IEs NAS Message [ Encoded – Authentication Response, SRES (UE Calculated!!) ]
Location Info [ e.g. LAI, RAC, SAI, etc..] optional
Channels
SCCP : MTP3b : SAAL : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Location Update Request Procedure)
RRC RRC DCCH: Downlink Direct Transfer
[ CN Domain ID, NAS Message ]
RANAP RANAP Direct Transfer
[ NAS PDU (Authentication Request!!) ]
RRC RRC DCCH: Uplink Direct Transfer
[ CN Domain ID, NAS Message ]
RANAP RANAP Direct Transfer
[ NAS PDU (Authentication Response!!) ]
Identification Procedure
66
Channels Main IEs
RNC MSC Node-B UE
Mobility Management – Location Update
Security Procedure: RANAP Security Mode Command Message
Description: MSC (optionally!!) initiates Security Procedure, using RANAP Security Mode Command Message to RNC.
Main IEs Integrity Protection Info [e.g. Permitted algorithms, Integrity Protection Key, . ]
Encryption Info [e.g. Permitted Algorithm Set, Encryption Key, . ]
Key Status [Old or New]
Channels
SCCP : MTP3b : SAAL : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Location Update Request Procedure)
RANAP RANAP Security Mode Command
[ Integrity Protection, Encryption info ]
Identification / Authentication Procedure
67
Channels Main IEs
RNC MSC Node-B UE
Mobility Management – Location Update
Security Procedure: RRC Security Mode Command Message
Description: RNC RRC initiates security procedure, by sending RRC Security Mode Command message to UE on DCCH (SRB-2).
Main IEs CN Domain ID [CS or PS], Integrity Check Info [ i.e. MAC, RRC Msg Seq No ]
Integrity Prot Mode Info [ Cmd(S/M), Algo, FRESH, DL Act time for SRBs ]
Ciphering Mode Info [ e.g. Cmd(Start/Restart), Algo, DL Act time for all RBs ]
Channels
DCCH : DCH : DPDCH
RRC Connection Establishment
Signalling Connection Establishment (Location Update Request Procedure)
RRC RRC DCCH: Security Mode Command
[ CN Domain ID, Integrity Check Info, Integrity Protection/Ciphering Mode Info ]
RANAP RANAP Security Mode Command
[ Integrity Protection, Encryption info ]
Identification / Authentication Procedure
68
Channels Main IEs
RNC MSC Node-B UE
Mobility Management – Location Update
Security Procedure: RRC Security Mode Complete Message
Description: UE RRC send successful response of security procedure, by sending RRC Security Mode Complete message to RNC on DCCH (SRB-2).
Main IEs RRC Transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ]
UL Integrity Protection activation time for SRBs [ i.e. RRC Msg Seq Numbers ]
UL Ciphering activation time for all RBs [ i.e. RLC Seq Numbers ]
Channels
DCCH : DCH : DPDCH
RRC Connection Establishment
Signalling Connection Establishment (Location Update Request Procedure)
RRC RRC DCCH: Security Mode Command
[ CN Domain ID, Integrity Check Info, Integrity Protection/Ciphering Mode Info ]
RANAP RANAP Security Mode Command
[ Integrity Protection, Encryption info ]
Identification / Authentication Procedure
RRC RRC DCCH: Security Mode Complete
[ Integrity Check Info, UL Integrity Protection/Ciphering Activation Time ]
69
Channels Main IEs
RNC MSC Node-B UE
Mobility Management – Location Update
Security Procedure: RANAP Security Mode Complete Message
Description: RNC send successful response of Security Procedure, using RANAP Security Mode Complete message towards MSC.
Main IEs Chosen Integrity Protection Algorithm [ i. e. UIA1 ]
Chosen Encryption Algorithm [ No Encryption, or, UEA1 ]
Channels
SCCP : MTP3b : SAAL : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Location Update Request Procedure)
RRC RRC DCCH: Security Mode Command
[ CN Domain ID, Integrity Check Info, Integrity Protection/Ciphering Mode Info ]
RANAP RANAP Security Mode Command
[ Integrity Protection, Encryption info ]
Identification / Authentication Procedure
RRC RRC DCCH: Security Mode Complete
[ Integrity Check Info, UL Integrity Protection/Ciphering Activation Time ]
RANAP RANAP Security Mode Complete
[ Chosen Integrity, Encryption Algorithm ]
70
Channels Main IEs
RNC MSC Node-B UE
Mobility Management – Location Update
Security Procedure: RANAP Common ID Message
Description: MSC provide permanent NAS UE identity (i.e. IMSI) to RNC using RANAP Common ID message. RNC use same for paging co-ordination functionality.
Main IEs Permanent NAS UE identity ( i.e. IMSI value )
Channels
SCCP : MTP3b : SAAL : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Location Update Request Procedure)
RRC RRC DCCH: Security Mode Command
[ CN Domain ID, Integrity Check Info, Integrity Protection/Ciphering Mode Info ]
RANAP RANAP Security Mode Command
[ Integrity Protection, Encryption info ]
Identification / Authentication Procedure
RRC RRC DCCH: Security Mode Complete
[ Integrity Check Info, UL Integrity Protection/Ciphering Activation Time ]
RANAP RANAP Security Mode Complete
[ Chosen Integrity, Encryption Algorithm ]
RANAP RANAP Common ID
[ Permanent NAS UE Identity ]
71
Channels Main IEs
RNC MSC Node-B UE
Mobility Management – Location Update
Location Update Accept Procedure: RANAP Direct Transfer Message
Description: Core network MM confirms location update procedure by Location Update Accept message to UE. MSC transfers Location Update Accept, encoded NAS PDU, in RANAP Direct Transfer message to RNC.
Main IEs NAS–PDU [ Encoded – Location Update Accept, LAI, New mobile id(TMSI),]
Channels
SCCP : MTP3b : SAAL : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Location Update Request Procedure)
RANAP RANAP Direct Transfer
[ NAS PDU (Location Update Accept) ]
Identification / Authentication / Security Procedure
72
Channels Main IEs
RNC MSC Node-B UE
Mobility Management – Location Update
Location Update Accept Procedure: RRC Downlink Direct Transfer Message
Description: RNC RRC encodes received NAS PDU, in RANAP Direct Transfer message, into RRC Downlink Direct Transfer message and send it to UE on DCCH (SRB-3).
Main IEs RRC Transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ]
CN Domain ID [CS or PS] NAS–PDU [ Encoded – Location Update Accept, LAI, New mobile id(TMSI),]
Channels
DCCH : DCH : DPDCH
RRC Connection Establishment
Signalling Connection Establishment (Location Update Request Procedure)
RANAP RANAP Direct Transfer
[ NAS PDU (Location Update Accept) ]
Identification / Authentication / Security Procedure
RRC RRC DCCH: Downlink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
73
Channels Main IEs
RNC MSC Node-B UE
Mobility Management – Location Update
Location Update Accept Procedure: RRC Uplink Direct Transfer Message
Description: (Optionally!!) If TMSI has been reallocated as part of Location Update Accept Message, UE (MM) responds with TMSI Reallocation Complete, encoded NAS PDU, in RRC Uplink Direct Transfer message.
Main IEs RRC Transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ]
CN Domain ID [CS or PS] NAS–PDU [ Encoded – TMSI Reallocation Complete Message Type ]
Channels
DCCH : DCH : DPDCH
RRC Connection Establishment
Signalling Connection Establishment (Location Update Request Procedure)
RANAP RANAP Direct Transfer
[ NAS PDU (Location Update Accept) ]
Identification / Authentication / Security Procedure
RRC RRC DCCH: Downlink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
RRC RRC DCCH: Uplink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
74
Channels Main IEs
RNC MSC Node-B UE
Mobility Management – Location Update
Location Update Accept Procedure: RANAP Direct Transfer Message
Description: RNC forwards received NAS PDU, to Core Network (MSC/VLR), using RANAP Direct Transfer Message.
Main IEs NAS–PDU [ Encoded – TMSI Reallocation Complete Message Type ]
Location Info [ e.g. LAI, RAC, SAI, etc..] optional
Channels
SCCP : MTP3b : SAAL : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Location Update Request Procedure)
RANAP RANAP Direct Transfer
[ NAS PDU (Location Update Accept) ]
Identification / Authentication / Security Procedure
RRC RRC DCCH: Downlink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
RRC RRC DCCH: Uplink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
RANAP RANAP Direct Transfer
[ NAS PDU (TMSI Realloc Complete) ]
75
Channels Main IEs
RNC MSC Node-B UE
Mobility Management – Location Update
Iu Connection Release: RANAP Iu Release Command Message
Description: On successful completion of Location Update procedure, CN initiate Iu (Signalling!!) Connection Release procedure, using RANAP Iu Release Command towards RNC.
Main IEs Cause ( Normal Release!! )
Channels
SCCP : MTP3b : SAAL : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Location Update Request Procedure)
Identification / Authentication / Security Procedure
Location Update Accept (Optional TMSI Reallocation!!) Procedure
RANAP RANAP Iu Release Command
[ Cause ]
76
Channels Main IEs
RNC MSC Node-B UE
Mobility Management – Location Update
Iu Connection Release: RANAP Iu Release Complete Message
Description: RNC confirms Iu signalling connection release, using RANAP Iu Release Complete message to CN. It also initiates lower layer (SCCP) connection release, established for respective Iu signalling Connection.
Main IEs Channels
SCCP : MTP3b : SAAL : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Location Update Request Procedure)
Identification / Authentication / Security Procedure
Location Update Accept (Optional TMSI Reallocation!!) Procedure
RANAP RANAP Iu Release Command
[ Cause ]
RANAP RANAP Iu Release Complete
SCCP SCCP Released
[ SRC/DST References, Cause ]
SCCP SCCP Release Complete [ SRC/DST References ]
triggers
77
Channels Main IEs
RNC MSC Node-B UE
Mobility Management – Location Update
RRC Connection Release: RRC Connection Release Message
Description: RNC initiates RRC connection release, by sending RRC Connection Release message to UE on DCCH (SRB1).
Main IEs RRC transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ]
Release Cause[e.g. normal, inactivity, directed re-establishment, congestion, ..]
Rplmn information
Channels
DCCH : DCH : DPDCH
RRC Connection Establishment
Signalling Connection Establishment (Location Update Request Procedure)
Identification / Authentication / Security Procedure
Location Update Accept (Optional TMSI Reallocation!!) Procedure
Iu Connection Release
RRC RRC DCCH: RRC Connection Release
[ Integrity Check info, Release Cause ]
triggers
78
Channels Main IEs
RNC MSC Node-B UE
Mobility Management – Location Update
RRC Connection Release: RRC Connection Release Complete Message
Description: UE responds with RRC Connection Release Complete message on DCCH to RNC, terminates RRC connection and move to RRC IDLE state.
Main IEs RRC transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ]
Channels
DCCH : DCH : DPDCH
RRC Connection Establishment
Signalling Connection Establishment (Location Update Request Procedure)
Identification / Authentication / Security Procedure
Location Update Accept (Optional TMSI Reallocation!!) Procedure
Iu Connection Release
RRC RRC DCCH: RRC Connection Release
[ Integrity Check info, Release Cause ]
triggers
RRC RRC DCCH: RRC Connection Release Complete
[ Integrity Check info ]
79
Channels Main IEs
RNC MSC Node-B UE
Mobility Management – Location Update
UE Context Cleanup: NBAP Radio Link Deletion Request Message
Description: On reception of RRC Connection Release Complete message, RNC initiates cleanup of UE context. If RRC Connection in Cell DCH state, initiate Radio Link Deletion Request towards Node-B.
Main IEs Transaction ID, CRNC Comm Ctxt ID, Node-B Comm Ctxt ID,
RL ID(s)
Channels
SSCF : SSCOP : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Location Update Request Procedure)
Identification / Authentication / Security Procedure
Location Update Accept (Optional TMSI Reallocation!!) Procedure
Iu Connection Release RRC Connection Release
NBAP NBAP Radio Link Deletion Request
[ RL ID(s) ]
80
Channels Main IEs
RNC MSC Node-B UE
Mobility Management – Location Update
UE Context Cleanup: NBAP Radio Link Deletion Response Message
Description: On reception Radio Link Deletion Request, Node-B release all resources associated with respective RL Ids. On success, respond with Radio Link Deletion Response message to RNC.
Main IEs Transaction ID, CRNC Communication Context ID,
Channels
SSCF : SSCOP : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Location Update Request Procedure)
Identification / Authentication / Security Procedure
Location Update Accept (Optional TMSI Reallocation!!) Procedure
Iu Connection Release RRC Connection Release
NBAP NBAP Radio Link Deletion Request
[ RL ID(s) ]
NBAP NBAP Radio Link Deletion Response
[ CRNC Comm Ctxt ID ]
81
Channels Main IEs
RNC MSC Node-B UE
Mobility Management – Location Update
UE Context Cleanup: ALCAP Release Request/Confirm Message
Description: After RL deletion, RNC initiate AAL2 bearer release allocated for DCH data stream. RNC ALCAP request release with Release Request message, Node-B ALCAP confirms it with Release Confirm message.
Main IEs DSAID Cause
DSAID
Channels
STC.2 / SSCF : SSCOP : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Location Update Request Procedure)
Identification / Authentication / Security Procedure
Location Update Accept (Optional TMSI Reallocation!!) Procedure
Iu Connection Release RRC Connection Release
NBAP NBAP Radio Link Deletion Request
[ RL ID(s) ]
NBAP NBAP Radio Link Deletion Response
[ CRNC Comm Ctxt ID ]
ALCAP ALCAP ALCAP Release Request
[ DSAID, Cause ]
ALCAP ALCAP ALCAP Release Confirm
[ DSAID ]
82
Channels Main IEs
RNC MSC Node-B UE
Mobility Management – Location Update
Location Update Complete!!..
Main IEs Channels
RRC Connection Establishment
Signalling Connection Establishment (Location Update Request Procedure)
Identification / Authentication / Security Procedure
Location Update Accept (Optional TMSI Reallocation!!) Procedure
Iu Connection Release RRC Connection Release
UE Context Cleanup
83
Connection Management – CS Call Setup and Release RNC MSC/VLR Node-B UE
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification /Authentication / Security Procedure (Optional!!)
Call Setup Procedure
RRC Connection Release
UE Context Cleanup
Iu Connection Release
RAB Assignment Procedure ( Iu, IuB, Uu Setups!! )
Call Connect Procedure
Iu Resource Setup IuB Resource Setup
Radio Bearer (Uu) Setup
Call Release Procedure
Call Connected : Voice Transfer!!
84
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
Signalling Connection Establishment: RRC Initial Direct Transfer Message
Description: On successful establishment of RRC Connection, UE MM sends Service Request message, encoded NAS message, enclosed in RRC Initial Direct Transfer message on DCCH.
Main IEs RRC transaction ID, CN Domain Identity [e.g. CS, PS],
NAS Message [ Encoded – CM service request, Service type, CKSN, Classmark, .. ]
Measurement Results
Channels
DCCH : DCH : DPDCH
RRC Connection Establishment
RRC RRC DCCH: Initial Direct Transfer
[ CN Domain ID, NAS Message ]
85
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
Signalling Connection Establishment: RANAP Initial UE Message
Description: RNC uses received CN domain identity in Initial Direct Transfer Message, and initiate Iu (Iu-CS) connection setup, and transfer of received Initial UE NAS message using RANAP to core network (MSC/VLR).
Main IEs CN Domain ID [CS or PS] Location Info [ e.g. LAI, RAC, SAI, etc..]
NAS–PDU [ Encoded – CM service request, Service type, CKSN, Classmark, .. ]
Global RNC ID Iu Signalling Connection Identifier
Channels
SCCP : MTP3b : SAAL : AAL5
RRC Connection Establishment
RRC RRC DCCH: Initial Direct Transfer
[ CN Domain ID, NAS Message ]
RANAP RANAP Initial UE Message
[ CN Domain ID, LAI, NAS-PDU ]
SCCP SCCP Connection Confirm (CC)
[ SRC/DST References ]
SCCP SCCP Connection Request (CR)
[ Reference, SRC/DST Add, User Data ]
Iu (Iu-CS!!) Connection Setup; SCCP carry RANAP Initial UE Message
piggybacked in SCCP CR PDU!! All subsequent RANAP messages will be
sent over this established SCCP Connection!!
86
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
Signalling Connection Establishment: RANAP Direct Transfer Message
Description: Core network MM confirms CM Service Request acceptance, using CM Service Accept message to UE. MSC transfers CM Service Accept, encoded NAS PDU, in RANAP Direct Transfer message to RNC.
Main IEs NAS–PDU [ Encoded – CM service Accept, Only message type!! ]
Channels
SCCP : MTP3b : SAAL : AAL5
RRC Connection Establishment
RRC RRC DCCH: Initial Direct Transfer
[ CN Domain ID, NAS Message ]
RANAP RANAP Initial UE Message
[ CN Domain ID, LAI, NAS-PDU ]
SCCP SCCP Connection Confirm (CC)
[ SRC/DST References ]
SCCP SCCP Connection Request (CR)
[ Reference, SRC/DST Add, User Data ]
Iu (Iu-CS!!) Connection Setup; SCCP carry RANAP Initial UE Message
piggybacked in SCCP CR PDU!! All subsequent RANAP messages will be
sent over this established SCCP Connection!!
RANAP RANAP Direct Transfer
[ NAS PDU (CM Service Accept) ]
87
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
Signalling Connection Establishment: RRC Downlink Direct Transfer Message
Description: RNC RRC encodes received NAS PDU, in RANAP Direct Transfer message, into RRC Downlink Direct Transfer message and send it to UE on DCCH (SRB-3).
Main IEs RRC Transaction ID, CN Domain ID (CS!!),
NAS–PDU [ Encoded – CM service Accept, Only message type!! ]
Channels
DCCH : DCH : DPDCH
RRC Connection Establishment
RRC RRC DCCH: Initial Direct Transfer
[ CN Domain ID, NAS Message ]
RANAP RANAP Initial UE Message
[ CN Domain ID, LAI, NAS-PDU ]
SCCP SCCP Connection Confirm (CC)
[ SRC/DST References ]
SCCP SCCP Connection Request (CR)
[ Reference, SRC/DST Add, User Data ]
Iu (Iu-CS!!) Connection Setup; SCCP carry RANAP Initial UE Message
piggybacked in SCCP CR PDU!! All subsequent RANAP messages will be
sent over this established SCCP Connection!!
RANAP RANAP Direct Transfer
[ NAS PDU (CM Service Accept) ]
RRC RRC DCCH: Downlink Direct Transfer
[ CN Domain ID, NAS Message ]
88
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
Identification/Authentication/Security Procedure: UE RNC CN Description: After successful establishment of signalling connection, optionally, CN NAS initiates identification, authentication and security procedures.
Main IEs Channels
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
89
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
Call Setup Procedure: RRC Uplink Direct Transfer Message
Description: After service accept and security procedure, UE (CC) UE initiates Call Setup Message, encoded NAS PDU, in RRC Uplink Direct Transfer message on DCCH (SRB-3).
Main IEs RRC Transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ]
CN Domain ID (CS!!) NAS Msg [ Encoded – Call Setup, Calling/Called Party No, Bearer Capabilities, .. ]
Channels
DCCH : DCH : DPDCH
RRC RRC DCCH: Uplink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
90
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
Call Setup Procedure: RANAP Direct Transfer Message
Description: RNC transparently forwards received NAS PDU, to Core Network (MSC/VLR), using RANAP Direct Transfer Message.
Main IEs NAS-PDU [Encoded – Call Setup, Calling/Called Party No, Bearer Capabilities, .. ]
Channels
SCCP : MTP3b : SAAL : AAL5
RRC RRC DCCH: Uplink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
RANAP RANAP Direct Transfer
[ NAS PDU (Call Setup) ]
91
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
Call Setup Procedure: RANAP Direct Transfer Message
Description: MSC Call Control functionality analyze received information in Call Setup message; responds back to UE with Call Proceeding, encoded NAS PDU, using RANAP Direct Transfer Message towards RNC.
Main IEs NAS-PDU [Encoded – Call Proceeding, Chosen Bearer Capabilities, Priority, ..]
Channels
SCCP : MTP3b : SAAL : AAL5
RRC RRC DCCH: Uplink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
RANAP RANAP Direct Transfer
[ NAS PDU (Call Setup) ]
RANAP RANAP Direct Transfer
[ NAS PDU (Call Proceeding) ]
92
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
Call Setup Procedure: RRC Downlink Direct Transfer Message
Description: RNC RRC encodes received NAS PDU, in RANAP Direct Transfer message, into RRC Downlink Direct Transfer message and send it to UE on DCCH (SRB-3).
Main IEs RRC Transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ]
CN Domain ID (CS!!) NAS-PDU [Encoded – Call Proceeding, Chosen Bearer Capabilities, Priority, ..]
Channels
SCCP : MTP3b : SAAL : AAL5
RRC RRC DCCH: Uplink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
RANAP RANAP Direct Transfer
[ NAS PDU (Call Setup) ]
RANAP RANAP Direct Transfer
[ NAS PDU (Call Proceeding) ]
RRC RRC DCCH: Downlink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
93
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
RAB Assignment Procedure: RANAP RAB Assignment Request Message
Description: After accepting call setup request, MSC initiates RAB setup, using RANAP RAB Assignment Request message towards RNC.
Main IEs RAB Setup list, RAB ID RAB Info [e.g. QoS Info, Alloc/Ret Priority, ..]
SDU Params per Sub-flow [BLER, BER, SDU Format info combination(SDU Size)]
User Plane Info[mode,ver] Transport Layer Info [ i.e. TLA, Binding ID ]
Channels
SCCP : MTP3b : SAAL : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
Call Setup Procedure
RANAP RANAP RAB Assignment Request
[ RAB ID, RAB Params, User Plane Info ]
94
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
RAB Assignment Procedure: ALCAP Establish Request/Confirm Message
Description: RNC initiates AAL2 bearer establishment towards MSC, using received AAL2 TLA & Binding ID. MSC ALCAP verifies received Binding ID; and respond successful establishment with ALCAP ECF Message.
Main IEs OSAID, DSAID + CEID, SUGR (Binding ID!!), AAL2 Destination Address
OSAID, DSAID
Channels
STC.1 : MTP3b : SAAL : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
Call Setup Procedure
RANAP RANAP RAB Assignment Request
[ RAB ID, RAB Params, User Plane Info ]
ALCAP ALCAP ALCAP Establish Confirm
[ OSAID,DSAID ]
ALCAP ALCAP ALCAP Establish Request
[ OSAID,DSAID,SUGR,AAL2 Address ]
triggers
95
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
RAB Assignment Procedure: IuUP INIT and INIT ACK Frame
Description: After successful AAL2 bearer creation, RNC IuUP initiates initialization procedure with peer IuUP in MSC, to negotiate IuUP version and supported RFCIs (i.e. SDU Sizes, Inter-Frame Time, etc) for this Call.
Main IEs IuUP Version Number of Sub-flows in evey RFCI
RFCIs, SDU Sizes
Channels
FP: AAL2
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
Call Setup Procedure
RANAP RANAP RAB Assignment Request
[ RAB ID, RAB Params, User Plane Info ]
ALCAP ALCAP ALCAP Establish Confirm
[ OSAID,DSAID ]
ALCAP ALCAP ALCAP Establish Request
[ OSAID,DSAID,SUGR,AAL2 Address ]
IuUP IuUP INITIALIZATION ACK
IuUP IuUP INITIALIZATION
[ IuUP Version, RFCIs, SDU Sizes ]
triggers
96
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
RAB Assignment Procedure: NBAP RL Reconfiguration Prepare Message
Description: After (or along with!!) Iu resource allocation, RNC reserves additional radio resources, according to RAB requirement and initiates resource allocation over IuB, using NBAP RL Reconfiguration Prepare Message.
Main IEs NodeB Comm Ctxt ID, UL/DL DPCH info [ e.g. Codes, TFCS, etc ]
DCH info [ e.g. TrCH ID, UL/DL TFS, Window(ToAWS,
ToAWE), Priority, etc..]
RL Info, [e.g. RL ID, DL Code, Power Information, Max/Min DL power, etc ]
Channels
SSCF : SSCOP : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
Call Setup Procedure
RAB Assignment Procedure (Iu Setup) NBAP NBAP
RL Reconfiguration Prepare [ UL/DL DPCH info, RL info, DCH ]
97
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
RAB Assignment Procedure: NBAP RL Reconfiguration Ready Message
Description: Node B reserves necessary resources for new configuration of Radio Link(s), Coordinated DCH for Voice, etc according to received parameters; and send success response to RNC.
Main IEs Transaction ID, CRNC Comm Ctxt ID, RL IDs
DCH Info Response [ e.g. TrCH ID, Transport Layer Address and Binding ID ]
Channels
SSCF : SSCOP : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
Call Setup Procedure
RAB Assignment Procedure ( Iu Setup ) NBAP NBAP
RL Reconfiguration Prepare [ UL/DL DPCH info, RL info, DCH ]
NBAP NBAP RL Reconfiguration Ready
[ TLA, Binding ID ]
98
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
RAB Assignment Procedure: ALCAP Establish Request/Confirm Message
Description: RNC initiates AAL2 bearer establishment for voice DCH, using received AAL2 TLA & Binding ID. Node-B ALCAP verifies received Binding ID; and respond successful establishment with ALCAP Confirm Msg.
Main IEs OSAID, DSAID + CEID, SUGR (Binding ID!!), AAL2 Destination Address
OSAID, DSAID
Channels
STC.2 : SSCF : SSCOP : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
Call Setup Procedure
RAB Assignment Procedure ( Iu Setup ) NBAP NBAP
RL Reconfiguration Prepare [ UL/DL DPCH info, RL info, DCH ]
NBAP NBAP RL Reconfiguration Ready
[ TLA, Binding ID ]
ALCAP ALCAP ALCAP Establish Request
[ OSAID, DSAID, SUGR, AAL2 Address ]
ALCAP ALCAP ALCAP Establish Confirm
[ OSAID, DSAID ]
99
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
RAB Assignment Procedure: FP DL/UL Synchronization Frames
Description: New DCH voice FP initiates L2 synchronization using DL synchronization frame with current CFN. Node-B FP(peer!!) verifies CFN to SFN relationship; & respond back with ToA(required timing adjustment) info
Main IEs CFN (Connection Frame Number)
CFN (Connection Frame Number), ToA (Time of Arrival)
Channels
STC.2 : SSCF : SSCOP : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
Call Setup Procedure
RAB Assignment Procedure ( Iu Setup ) NBAP NBAP
RL Reconfiguration Prepare [ UL/DL DPCH info, RL info, DCH ]
NBAP NBAP RL Reconfiguration Ready
[ TLA, Binding ID ]
ALCAP ALCAP ALCAP Establish Request
[ OSAID, DSAID, SUGR, AAL2 Address ]
ALCAP ALCAP ALCAP Establish Confirm
[ OSAID, DSAID ]
FP FP DL Synchronization
[ CFN ]
FP FP UL Synchronization
[ CFN, ToA ]
100
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
RAB Assignment Procedure: NBAP RL Reconfiguration Commit Message
Description: After successful Iu, IuB Resource setup (and User Plane, L1/L2 at RNC!!), RNC calculates CFN, activation time, for this synchronized procedure; and provide same to Node-B (and UE along with RB Setup!!).
Main IEs Transaction ID, Node-B Communication Context ID,
CFN (Connection Frame Number – Activation time for new configuration!!)
Channels
STC.2 : SSCF : SSCOP : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
Call Setup Procedure
RAB Assignment Procedure ( Iu Setup ) NBAP NBAP
RL Reconfiguration Prepare [ UL/DL DPCH info, RL info, DCH ]
NBAP NBAP RL Reconfiguration Ready
[ TLA, Binding ID ]
ALCAP ALCAP ALCAP Establish Request
[ OSAID, DSAID, SUGR, AAL2 Address ]
ALCAP ALCAP ALCAP Establish Confirm
[ OSAID, DSAID ]
FP FP DL Synchronization
[ CFN ]
FP FP UL Synchronization
[ CFN, ToA ]
NBAP NBAP RL Reconfiguration Commit
[ Activation CFN ]
101
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
RAB Assignment Procedure: RRC Radio Bearer Setup Message
Description: On successful Iu, IuB resource (and User Plane, L1/L2 at RNC!!), RNC initiates Radio Bearer Setup towards UE on DCCH, for requested voice RAB, with selected configuration and allocated resource information.
Main IEs Activation time (CFN!!) RB info [ RAB ID, CN ID, RLC Config, RB mapping ..]
RRC State (Cell DCH!!) TrCH info [ UL/DL TFCS, DCH IDs, TFS, etc.. ]
Radio info[e.g. Frequency, Codes, Power info, etc.. ] …
Channels
DCCH : DCH : DPDCH
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
Call Setup Procedure
RAB Assignment Procedure ( Iu, IuB Setup!! )
RRC RRC DCCH: Radio Bearer Setup
[ Integrity Check Info, Activation CFN, RB Setup info, TrCH info, RL info ]
102
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
RAB Assignment Procedure: RRC Radio Bearer Setup Complete Message
Description: UE RRC validates, received RB setup configuration, stores it and activates the same at specified activation CFN. After activation of new configuration, it sends Radio Bearer Setup Complete message to RNC.
Main IEs RRC Transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq no ]
START Value (CS!!) Ciphering Count-C Activation Time (CFN!!)
Channels
DCCH : DCH : DPDCH
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
Call Setup Procedure
RAB Assignment Procedure ( Iu, IuB Setup!! )
RRC RRC DCCH: Radio Bearer Setup
[ Integrity Check Info, Activation CFN, RB Setup info, TrCH info, RL info ]
RRC RRC DCCH: Radio Bearer Setup Complete
[ RRC Transaction ID, Integrity Check info, START value ]
On activation CFN, Node-B, UE and RNC L1/L2 activates pending new configuration!!.
103
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
RAB Assignment Procedure: RANAP RAB Assignment Response Message
Description: On reception of RRC Radio Bearer Setup Complete message, RNC send successful response to RAB Assignment procedure, using RANAP RAB Assignment Response message towards MSC.
Main IEs RAB ID (of successfully established RAB!!)
Assigned (Chosen) RAB Parameters (if RAB QoS negotiation has performed!!)
Channels
SCCP : MTP3b : SAAL : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
Call Setup Procedure
RAB Assignment Procedure ( Iu, IuB Setup!! )
RRC RRC DCCH: Radio Bearer Setup
[ Integrity Check Info, Activation CFN, RB Setup info, TrCH info, RL info ]
RRC RRC DCCH: Radio Bearer Setup Complete
[ RRC Transaction ID, Integrity Check info, START value ]
On activation CFN, Node-B, UE and RNC L1/L2 activates pending new configuration!!.
RANAP RANAP RAB Assignment Response
[ RAB ID ]
104
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
Call Connect Procedure: RANAP Direct Transfer Procedure
Description: After called party user reached/alerted, MSC Call Control respond with Alerting message back to UE. Alerting message, encoded NAS PDU, is forwarded using RANAP Direct Transfer Message towards RNC.
Main IEs NAS–PDU [ Encoded – Alerting Message Type, .. ]
Channels
SCCP : MTP3b : SAAL : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
Call Setup Procedure
RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
RANAP RANAP Direct Transfer
[ NAS PDU (Alerting) ]
105
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
Call Connect Procedure: RRC Downlink Direct Transfer Message
Description: RNC RRC transparently encodes received NAS PDU, in RANAP Direct Transfer message, into RRC Downlink Direct Transfer message and send it to UE on DCCH (SRB-3).
Main IEs RRC Transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ]
CN Domain ID (CS!!) NAS Message [ Encoded – Alerting Message Type, .. ]
Channels
DCCH : DCH : DPDCH
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
Call Setup Procedure
RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
RANAP RANAP Direct Transfer
[ NAS PDU (Alerting) ]
RRC RRC DCCH: Downlink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
106
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
Call Connect Procedure: RANAP Direct Transfer Message
Description: After called party user accept the Call, MSC Call Control respond with Connect message back to UE. Connect message, encoded NAS PDU, is forwarded using RANAP Direct Transfer Message towards RNC.
Main IEs NAS–PDU [ Encoded – Connect Message Type, .. ]
Channels
SCCP : MTP3b : SAAL : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
Call Setup Procedure
RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
RANAP RANAP Direct Transfer
[ NAS PDU (Alerting) ]
RRC RRC DCCH: Downlink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
RANAP RANAP Direct Transfer
[ NAS PDU (Connect) ]
107
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
Call Connect Procedure: RRC Downlink Direct Transfer Message
Description: RNC RRC transparently encodes received NAS PDU, in RANAP Direct Transfer message, into RRC Downlink Direct Transfer message and send it to UE on DCCH (SRB-3).
Main IEs NAS Message [ Encoded – Connect Message Type, .. ]
Channels
DCCH : DCH : DPDCH
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
Call Setup Procedure
RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
RANAP RANAP Direct Transfer
[ NAS PDU (Alerting) ]
RRC RRC DCCH: Downlink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
RANAP RANAP Direct Transfer
[ NAS PDU (Connect) ]
RRC RRC DCCH: Downlink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
108
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
Call Connect Procedure: RRC Uplink Direct Transfer Message
Description: On reception of Connect message, UE NAS (CC) responds it with Connect Acknowledge message, encoded NAS PDU, in RRC Uplink Direct Transfer Message on DCCH (SRB-3).
Main IEs RRC Transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ]
CN Domain ID (CS!!) NAS Message [ Encoded – Connect Acknowledge Message Type, .. ]
Channels
DCCH : DCH : DPDCH
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
Call Setup Procedure
RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
RANAP RANAP Direct Transfer
[ NAS PDU (Alerting) ]
RRC RRC DCCH: Downlink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
RANAP RANAP Direct Transfer
[ NAS PDU (Connect) ]
RRC RRC DCCH: Downlink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
RRC RRC DCCH: Uplink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
109
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
Call Connect Procedure: RANAP Direct Transfer Message
Description: RNC transparently forwards received NAS PDU in RRC Uplink Direct Transfer Message, to Core Network (MSC/VLR), using RANAP Direct Transfer Message.
Main IEs NAS Message [ Encoded – Connect Acknowledge Message Type, .. ]
Channels
SCCP : MTP3b : SAAL : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
Call Setup Procedure
RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
RANAP RANAP Direct Transfer
[ NAS PDU (Alerting) ]
RRC RRC DCCH: Downlink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
RANAP RANAP Direct Transfer
[ NAS PDU (Connect) ]
RRC RRC DCCH: Downlink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
RRC RRC DCCH: Uplink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
RANAP RANAP Direct Transfer
[ NAS PDU (Connect Acknowledge) ]
110
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
Call Connected: Voice Transfer!!
Description: Once call in connected state, two way voice transfer continues until, either of party initiates Call Release Procedure.
Main IEs Channels
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
Call Setup Procedure
RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
Call Connect Procedure
Call Connected : Voice Transfer!!
111
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
Call Release Procedure: RRC Uplink Direct Transfer Message
Description: When calling user disconnects call, UE NAS (CC) initiates Disconnect Message, encoded NAS PDU, in RRC Uplink Direct Transfer message on DCCH (SRB-3).
Main IEs RRC Transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ]
CN Domain ID (CS!!) NAS Message [ Encoded – Disconnect Message Type, ..]
Channels
DCCH : DCH : DPDCH
RRC RRC DCCH: Uplink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
Call Setup Procedure
RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
Call Connect Procedure
Call Connected : Voice Transfer!!
112
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
Call Release Procedure: RANAP Direct Transfer Message
Description: RNC transparently forwards received NAS PDU in RRC Uplink Direct Transfer, to Core Network (MSC/VLR), using RANAP Direct Transfer Message.
Main IEs NAS Message [ Encoded – Disconnect Message Type, ..]
Channels
SCCP : MTP3b : SAAL : AAL5
RRC RRC DCCH: Uplink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
Call Setup Procedure
RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
Call Connect Procedure
Call Connected : Voice Transfer!!
RANAP RANAP Direct Transfer
[ NAS PDU (Disconnect) ]
113
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
Call Release Procedure: RANAP Direct Transfer Message
Description: MSC Call Control functionality responds back to UE with Release, encoded NAS PDU, using RANAP Direct Transfer Message towards RNC.
Main IEs NAS Message [ Encoded – Release Message Type, ..]
Channels
SCCP : MTP3b : SAAL : AAL5
RRC RRC DCCH: Uplink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
Call Setup Procedure
RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
Call Connect Procedure
Call Connected : Voice Transfer!!
RANAP RANAP Direct Transfer
[ NAS PDU (Disconnect) ]
RANAP RANAP Direct Transfer
[ NAS PDU (Release) ]
114
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
Call Release Procedure: RRC Downlink Direct Transfer Message
Description: RNC RRC transparently encodes received NAS PDU, in RANAP Direct Transfer message, into RRC Downlink Direct Transfer message and send it to UE on DCCH (SRB-3).
Main IEs RRC Transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ]
CN Domain ID (CS!!) NAS Message [ Encoded – Release Message Type, ..]
Channels
DCCH : DCH : DPDCH
RRC RRC DCCH: Uplink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
Call Setup Procedure
RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
Call Connect Procedure
Call Connected : Voice Transfer!!
RANAP RANAP Direct Transfer
[ NAS PDU (Disconnect) ]
RANAP RANAP Direct Transfer
[ NAS PDU (Release) ]
RRC RRC DCCH: Downlink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
115
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
Call Release Procedure: RRC Uplink Direct Transfer Message
Description: On reception of Release message, UE NAS (CC) responds with Disconnect Message, encoded NAS PDU, in RRC Uplink Direct Transfer message on DCCH (SRB-3).
Main IEs RRC Transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ]
CN Domain ID (CS!!) NAS Message [ Encoded – Release Complete Message Type, ..]
Channels
DCCH : DCH : DPDCH
RRC RRC DCCH: Uplink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
Call Setup Procedure
RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
Call Connect Procedure
Call Connected : Voice Transfer!!
RANAP RANAP Direct Transfer
[ NAS PDU (Disconnect) ]
RANAP RANAP Direct Transfer
[ NAS PDU (Release) ]
RRC RRC DCCH: Downlink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
RRC RRC DCCH: Uplink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
116
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
Call Release Procedure: RANAP Direct Transfer Message
Description: RNC transparently forwards received NAS Message received in RRC Uplink Direct Transfer message, to Core Network (MSC/VLR), using RANAP Direct Transfer Message.
Main IEs NAS Message [ Encoded – Release Complete Message Type, ..]
Channels
SCCP : MTP3b : SAAL : AAL5
RRC RRC DCCH: Uplink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
Call Setup Procedure
RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
Call Connect Procedure
Call Connected : Voice Transfer!!
RANAP RANAP Direct Transfer
[ NAS PDU (Disconnect) ]
RANAP RANAP Direct Transfer
[ NAS PDU (Release) ]
RRC RRC DCCH: Downlink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
RRC RRC DCCH: Uplink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
RANAP RANAP Direct Transfer
[ NAS PDU (Release Complete) ]
117
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
Iu Connection Release Procedure: RANAP Iu Release Command Message
Description: On successful completion of Call Release procedure, CN initiate Iu (Signalling!!) Connection Release procedure, using RANAP Iu Release Command towards RNC.
Main IEs Cause ( Normal Release!! )
Channels
SCCP : MTP3b : SAAL : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
Call Setup Procedure
RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
Call Connect Procedure
Call Connected : Voice Transfer!!
Call Release Procedure
RANAP RANAP Iu Release Command
[ Cause ]
118
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
Iu Connection Release Procedure: RANAP Iu Release Complete Message
Description: RNC confirms Iu signalling connection release, using RANAP Iu Release Complete message to CN. It also initiates lower layer (SCCP) connection release, established for respective Iu signalling Connection.
Main IEs Channels
SCCP : MTP3b : SAAL : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
Call Setup Procedure
RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
Call Connect Procedure
Call Connected : Voice Transfer!!
Call Release Procedure
RANAP RANAP Iu Release Command
[ Cause ]
RANAP RANAP Iu Release Complete
triggers
SCCP SCCP Released
[ SRC/DST References, Cause ]
SCCP SCCP Release Complete [ SRC/DST References ]
119
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
Iu Connection Release Procedure: ALCAP Release Request/Confirm Message
Description: Iu Connection Release Procedure, also initiates release of AAL2 bearers allocated over Iu (for Voice flow!!).
Main IEs DSAID Cause (Normal!!)
DSAID
Channels
STC.1 : MTP3b : SAAL : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
Call Setup Procedure
RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
Call Connect Procedure
Call Connected : Voice Transfer!!
Call Release Procedure
Iu Connection Release
ALCAP ALCAP ALCAP Release Confirm
[ DSAID ]
ALCAP ALCAP ALCAP Release Request
[ DSAID, Cause ]
triggers
120
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
RRC Connection Release: RRC Connection Release Message
Description: RNC initiates RRC connection release, by sending RRC Connection Release message to UE on DCCH (SRB1).
Main IEs RRC transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ]
Release Cause (Normal!!)
Channels
DCCH : DCH : DPDCH
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
Call Setup Procedure
RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
Call Connect Procedure
Call Connected : Voice Transfer!!
Call Release Procedure
Iu Connection Release triggers
RRC RRC DCCH: RRC Connection Release
[ Integrity Check info, Release Cause ]
121
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
RRC Connection Release: RRC Connection Release Complete Message
Description: UE responds with RRC Connection Release Complete message on DCCH to RNC, release resources allocated for voice RAB, RB, etc.. terminates RRC connection and move to RRC IDLE state.
Main IEs RRC transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ]
Channels
DCCH : DCH : DPDCH
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
Call Setup Procedure
RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
Call Connect Procedure
Call Connected : Voice Transfer!!
Call Release Procedure
Iu Connection Release triggers
RRC RRC DCCH: RRC Connection Release
[ Integrity Check info, Release Cause ]
RRC RRC DCCH: RRC Connection Release Complete
[ Integrity Check info ]
122
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
UE Context Cleanup: NBAP Radio Link Deletion Request Message
Description: On reception of RRC Connection Release Complete message, RNC initiates cleanup of UE context, to release resources allocated for voice RAB, RB, etc.. initiate Radio Link Deletion Request towards Node-B,
Main IEs Transaction ID, CRNC Comm Ctxt ID, Node-B Comm Ctxt ID,
RL ID(s)
Channels
SSCF : SSCOP : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
Call Setup Procedure
RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
Call Connect Procedure
Call Connected : Voice Transfer!!
Call Release Procedure
Iu Connection Release RRC Connection Release
NBAP NBAP Radio Link Deletion Request
[ RL ID(s) ]
123
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
UE Context Cleanup: NBAP Radio Link Deletion Response Message
Description: On reception Radio Link Deletion Request, Node-B release all resources associated with respective RL Ids, allocated for voice call. On success, respond with Radio Link Deletion Response message to RNC.
Main IEs Transaction ID, CRNC Comm Ctxt ID, Node-B Comm Ctxt ID,
RL ID(s)
Channels
SSCF : SSCOP : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
Call Setup Procedure
RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
Call Connect Procedure
Call Connected : Voice Transfer!!
Call Release Procedure
Iu Connection Release RRC Connection Release
NBAP NBAP Radio Link Deletion Request
[ RL ID(s) ]
NBAP NBAP Radio Link Deletion Response
[ CRNC Comm Ctxt ID ]
124
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
UE Context Cleanup: ALCAP Release Request/Confirm Message
Description: After RL deletion, RNC initiate AAL2 bearer release allocated for DCH data streams. RNC ALCAP request release with Release Request message, Node-B ALCAP confirms it with Release Confirm message.
Main IEs DSAID Cause
DSAID
Channels
STC.2 / SSCF : SSCOP : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
Call Setup Procedure
RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
Call Connect Procedure
Call Connected : Voice Transfer!!
Call Release Procedure
Iu Connection Release RRC Connection Release
NBAP NBAP Radio Link Deletion Request
[ RL ID(s) ]
NBAP NBAP Radio Link Deletion Response
[ CRNC Comm Ctxt ID ]
ALCAP ALCAP ALCAP Release Request
[ DSAID, Cause ]
ALCAP ALCAP ALCAP Release Confirm
[ DSAID ]
Twice!!, One for Signalling DCH and other for Voice DCH AAL2 bearer Release!!
125
Channels Main IEs
RNC MSC Node-B UE
Connection Management – CS Call Setup and Release
CS Call Setup and Released!!
Description: CS Call Setup, Connected, Voice Transferred, Released, UE back to Idle mode!!..
Main IEs Channels
RRC Connection Establishment
Signalling Connection Establishment (Service Request Procedure)
Identification / Authentication / Security Procedure
Call Setup Procedure
RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
Call Connect Procedure
Call Connected : Voice Transfer!!
Call Release Procedure
Iu Connection Release RRC Connection Release
UE Context Cleanup
126
Session Management – PS Session Setup and Release RNC SGSN Node-B UE
RRC Connection Establishment
Signalling Connection Establishment (Attach Request) Procedure
Identification /Authentication / Security Procedure (Optional!!)
PDP Context Activation (Session Establishment) Request Procedure
RRC Connection Release
UE Context Cleanup
Iu Connection Release
RAB Assignment Procedure ( Iu, IuB, Uu Setups!! )
PDP Context Activation (Session Establishment) Accept Procedure
Iu Resource Setup IuB Resource Setup
Radio Bearer (Uu) Setup
PDP Context De-activation (Session Release) Procedure
Call Connected : Data Transfer!!
Attach Accept Procedure
127
Channels Main IEs
RNC SGSN Node-B UE
Session Management – PS Session Setup and Release
Signalling Connection Establishment: RRC Initial Direct Transfer Message
Description: On successful establishment of RRC Connection, UE MM sends Attach Request message, encoded NAS message, enclosed in RRC Initial Direct Transfer message on DCCH.
Main IEs RRC transaction ID, CN Domain Identity (PS),
NAS Message [ Encoded – Attach request, Attach type, N/w capability, CKSN, .. ]
Measurement Results
Channels
DCCH : DCH : DPDCH
RRC Connection Establishment
RRC RRC DCCH: Initial Direct Transfer
[ CN Domain ID, NAS Message ]
128
Channels Main IEs
RNC SGSN Node-B UE
Session Management – PS Session Setup and Release
Signalling Connection Establishment: RANAP Initial UE Message
Description: RNC uses received CN domain identity in Initial Direct Transfer Message, and initiate Iu (Iu-PS) connection setup, and transfer of received Initial UE NAS message using RANAP Initial UE Message to CN.
Main IEs CN Domain ID [CS or PS] Location Info [ e.g. LAI, RAC, SAI, etc..]
NAS–PDU [ Encoded – Attach request, Attach type, N/w capability, CKSN, .. ]
Global RNC ID Iu Signalling Connection Identifier
Channels
SCCP : MTP3b : SAAL : AAL5
RRC Connection Establishment
RRC RRC DCCH: Initial Direct Transfer
[ CN Domain ID, NAS Message ]
RANAP RANAP Initial UE Message
[ CN Domain ID, LAI, NAS-PDU ]
SCCP SCCP Connection Confirm (CC)
[ SRC/DST References ]
SCCP SCCP Connection Request (CR)
[ Reference, SRC/DST Add, User Data ]
Iu (Iu-CS!!) Connection Setup; SCCP carry RANAP Initial UE Message
piggybacked in SCCP CR PDU!! All subsequent RANAP messages will be
sent over this established SCCP Connection!!
129
Channels Main IEs
RNC SGSN Node-B UE
Session Management – PS Session Setup and Release
Identification/Authentication/Security Procedure: UE RNC CN Description: After successful establishment of signalling connection, optionally, CN NAS initiates identification, authentication and security procedures.
Main IEs Channels
RRC Connection Establishment
Signalling Connection Establishment (Attach Request) Procedure
Identification / Authentication / Security Procedure
130
Channels Main IEs
RNC SGSN Node-B UE
Session Management – PS Session Setup and Release
Attach Accept Procedure: RANAP Direct Transfer Message
Description: Core network confirms Attach Request acceptance, using Attach Accept message to UE. SGSN transfers Attach Accept, encoded NAS PDU, in RANAP Direct Transfer message to RNC.
Main IEs NAS–PDU [ Encoded – Attach accept, Attach result, RAI, P-TMSI, RA Timer, .. ]
Channels
SCCP : MTP3b : SAAL : AAL5
RRC Connection Establishment
RANAP RANAP Direct Transfer
[ NAS PDU (Attach Accept) ]
Signalling Connection Establishment (Attach Request) Procedure
Identification / Authentication / Security Procedure
131
Channels Main IEs
RNC SGSN Node-B UE
Session Management – PS Session Setup and Release
Attach Accept Procedure: RRC Downlink Direct Transfer Message
Description: RNC RRC transparently encodes received NAS PDU, in RANAP Direct Transfer message, into RRC Downlink Direct Transfer message and send it to UE on DCCH (SRB-3).
Main IEs RRC Transaction ID, CN Domain ID (CS!!),
NAS Message [ Encoded – Attach accept, Attach result, RAI, P-TMSI, RA Timer, .. ]
Channels
DCCH : DCH : DPDCH
RRC Connection Establishment
RANAP RANAP Direct Transfer
[ NAS PDU (Attach Accept) ]
RRC RRC DCCH: Downlink Direct Transfer
[ CN Domain ID, NAS Message ]
Signalling Connection Establishment (Attach Request) Procedure
Identification / Authentication / Security Procedure
132
Channels Main IEs
RNC SGSN Node-B UE
Session Management – PS Session Setup and Release
Attach Accept Procedure: RRC Uplink Direct Transfer Message
Description: (Optionally!!) If TMSI/P-TMSI has been reallocated as part of Attach Accept Message, UE (GMM) responds with Attach Complete, encoded NAS PDU, in RRC Uplink Direct Transfer message.
Main IEs RRC Transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ]
CN Domain ID (PS) NAS Message [ Encoded – Attach Complete Message Type ]
Channels
DCCH : DCH : DPDCH
RRC Connection Establishment
RANAP RANAP Direct Transfer
[ NAS PDU (Attach Accept) ]
RRC RRC DCCH: Downlink Direct Transfer
[ CN Domain ID, NAS Message ]
Signalling Connection Establishment (Attach Request) Procedure
Identification / Authentication / Security Procedure
RRC RRC DCCH: Uplink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
133
Channels Main IEs
RNC SGSN Node-B UE
Session Management – PS Session Setup and Release
Attach Accept Procedure: RANAP Direct Transfer Message
Description: RNC forwards received NAS Message in RRC Uplink Direct Transfer message, to Core Network (SGSN), using RANAP Direct Transfer Message.
Main IEs NAS Message [ Encoded – Attach Complete Message Type ]
Channels
SCCP : MTP3b : SAAL : AAL5
RRC Connection Establishment
RANAP RANAP Direct Transfer
[ NAS PDU (Attach Accept) ]
RRC RRC DCCH: Downlink Direct Transfer
[ CN Domain ID, NAS Message ]
Signalling Connection Establishment (Attach Request) Procedure
Identification / Authentication / Security Procedure
RRC RRC DCCH: Uplink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
RANAP RANAP Direct Transfer
[ NAS PDU (Attach Complete) ]
134
Channels Main IEs
RNC SGSN Node-B UE
Session Management – PS Session Setup and Release
Session Setup Request Procedure: RRC Uplink Direct Transfer Message
Description: After attach accept procedure, UE (SM) UE initiates PDP Context Activation, using Activate PDP Context Request Message, encoded NAS PDU, in RRC Uplink Direct Transfer message on DCCH (SRB-3).
Main IEs RRC Transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ]
CN Domain ID (PS!!) NAS Msg [ Activate PDP Context Req, Req N-SAPI, QoS, PDP Address, APN, .. ]
Channels
DCCH : DCH : DPDCH
RRC Connection Establishment
Signalling Connection Establishment (Attach Request) Procedure
Identification / Authentication / Security Procedure
Attach Accept Procedure
RRC RRC DCCH: Uplink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
135
Channels Main IEs
RNC SGSN Node-B UE
Session Management – PS Session Setup and Release
Session Setup Request Procedure: RANAP Direct Transfer Message
Description: RNC transparently forwards received NAS PDU in RRC Uplink Direct Transfer message, to Core Network (SGSN), using RANAP Direct Transfer Message.
Main IEs NAS–PDU [ Activate PDP Context Req, Req N-SAPI, QoS, PDP Address, APN, .. ]
Channels
SCCP : MTP3b : SAAL : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Attach Request) Procedure
Identification / Authentication / Security Procedure
Attach Accept Procedure
RRC RRC DCCH: Uplink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
RANAP RANAP Direct Transfer
[ NAS PDU (Activate PDP Context Request) ]
136
Channels Main IEs
RNC SGSN Node-B UE
Session Management – PS Session Setup and Release
RAB Assignment Procedure: RANAP RAB Assignment Request Message
Description: On reception of Active PDP Context Request, SGSN initiates resource reservation according to requested Service, QoS type, etc in CN, and towards UTRAN, using RANAP RAB Assignment Request message.
Main IEs RAB Setup list, RAB ID RAB Info [e.g. QoS Info, Alloc/Ret Priority, Delay,
Max Rate, Guaranteed Rate, Max SDU Size, etc..] SDU Params[BLER, BER]
Transport Layer Info [ i.e. TLA(IP),Binding ID(TEID)]
Channels
SCCP : MTP3b : SAAL : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Attach Request) Procedure
Identification / Authentication / Security Procedure
Attach Accept Procedure
PDP Context Activation (Session Establishment) Request Procedure
RANAP RANAP RAB Assignment Request
[ RAB ID, RAB Params, User Plane Info ]
137
Channels Main IEs
RNC SGSN Node-B UE
Session Management – PS Session Setup and Release
RAB Assignment Procedure: NBAP RL Reconfiguration Prepare Message
Description: On receipt of RAB Assignment Request, RNC reserves additional radio resources, according to new RAB requirement and initiates resource allocation over IuB, using NBAP RL Reconfiguration Prepare Message.
Main IEs NodeB Comm Ctxt ID, UL/DL DPCH info [ e.g. Codes, TFCS, etc ]
DCH info [ e.g. TrCH ID, UL/DL TFS, Window(ToAWS,
ToAWE), Priority, etc..]
RL Info, [e.g. RL ID, DL Code, Power Information, Max/Min DL power, etc ]
Channels
SSCF : SSCOP : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Attach Request) Procedure
Identification / Authentication / Security Procedure
Attach Accept Procedure
PDP Context Activation (Session Establishment) Request Procedure
RANAP RANAP RAB Assignment Request
[ RAB ID, RAB Params, User Plane Info ]
NBAP NBAP RL Reconfiguration Prepare
[ UL/DL DPCH info, RL info, DCH ]
138
Channels Main IEs
RNC SGSN Node-B UE
Session Management – PS Session Setup and Release
RAB Assignment Procedure: NBAP RL Reconfiguration Ready Message
Description: Node B reserves necessary resources for new configuration of Radio Link(s), packet service DCH transport channel, etc.., according to received parameters; and send success response to RNC.
Main IEs Transaction ID, CRNC Comm Ctxt ID, RL IDs
DCH Info Response [ e.g. TrCH ID, Transport Layer Address and Binding ID ]
Channels
SSCF : SSCOP : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Attach Request) Procedure
Identification / Authentication / Security Procedure
Attach Accept Procedure
PDP Context Activation (Session Establishment) Request Procedure
RANAP RANAP RAB Assignment Request
[ RAB ID, RAB Params, User Plane Info ]
NBAP NBAP RL Reconfiguration Prepare
[ UL/DL DPCH info, RL info, DCH ]
NBAP NBAP RL Reconfiguration Ready
[ TLA, Binding ID ]
139
Channels Main IEs
RNC SGSN Node-B UE
Session Management – PS Session Setup and Release
RAB Assignment Procedure: ALCAP Establish Request/Confirm Message
Description: RNC initiates AAL2 bearer establishment for voice DCH, using received AAL2 TLA & Binding ID. Node-B ALCAP establish required bearer; and respond successful establishment with ALCAP Confirm message.
Main IEs OSAID, DSAID + CEID, SUGR (Binding ID!!), AAL2 Destination Address
OSAID, DSAID
Channels
STC.2 : SSCF : SSCOP : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Attach Request) Procedure
Identification / Authentication / Security Procedure
Attach Accept Procedure
PDP Context Activation (Session Establishment) Request Procedure
RANAP RANAP RAB Assignment Request
[ RAB ID, RAB Params, User Plane Info ]
NBAP NBAP RL Reconfiguration Prepare
[ UL/DL DPCH info, RL info, DCH ]
NBAP NBAP RL Reconfiguration Ready
[ TLA, Binding ID ]
ALCAP ALCAP ALCAP Establish Request
[ OSAID, DSAID, SUGR, AAL2 Address ]
ALCAP ALCAP ALCAP Establish Confirm
[ OSAID, DSAID ]
140
Channels Main IEs
RNC SGSN Node-B UE
Session Management – PS Session Setup and Release
RAB Assignment Procedure: FP DL/UL Synchronization Frames
Description: New PS DCH FP initiates L2 synchronization using DL synchronization frame with current CFN. Node-B FP(peer!!) verifies CFN to SFN relationship; & respond back with ToA(required timing adjustment) info
Main IEs CFN (Connection Frame Number)
CFN (Connection Frame Number), ToA (Time of Arrival)
Channels
FP : AAL2
RRC Connection Establishment
Signalling Connection Establishment (Attach Request) Procedure
Identification / Authentication / Security Procedure
Attach Accept Procedure
PDP Context Activation (Session Establishment) Request Procedure
RANAP RANAP RAB Assignment Request
[ RAB ID, RAB Params, User Plane Info ]
NBAP NBAP RL Reconfiguration Prepare
[ UL/DL DPCH info, RL info, DCH ]
NBAP NBAP RL Reconfiguration Ready
[ TLA, Binding ID ]
ALCAP ALCAP ALCAP Establish Request
[ OSAID, DSAID, SUGR, AAL2 Address ]
ALCAP ALCAP ALCAP Establish Confirm
[ OSAID, DSAID ]
FP FP DL Synchronization
[ CFN ]
FP FP UL Synchronization
[ CFN, ToA ]
141
Channels Main IEs
RNC SGSN Node-B UE
Session Management – PS Session Setup and Release
RAB Assignment Procedure: NBAP RL Reconfiguration Commit Message
Description: After successful Iu, IuB Resource setup (and User Plane, L1/L2 at RNC!!), RNC calculates CFN, activation time, for this synchronized procedure; and provide same to Node-B (and UE along with RB Setup!!).
Main IEs Transaction ID, Node-B Communication Context ID,
CFN (Connection Frame Number – Activation time for new configuration!!)
Channels
SSCF : SSCOP : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Attach Request) Procedure
Identification / Authentication / Security Procedure
Attach Accept Procedure
PDP Context Activation (Session Establishment) Request Procedure
RANAP RANAP RAB Assignment Request
[ RAB ID, RAB Params, User Plane Info ]
NBAP NBAP RL Reconfiguration Prepare
[ UL/DL DPCH info, RL info, DCH ]
NBAP NBAP RL Reconfiguration Ready
[ TLA, Binding ID ]
ALCAP ALCAP ALCAP Establish Request
[ OSAID, DSAID, SUGR, AAL2 Address ]
ALCAP ALCAP ALCAP Establish Confirm
[ OSAID, DSAID ]
FP FP DL Synchronization
[ CFN ]
FP FP UL Synchronization
[ CFN, ToA ]
NBAP NBAP RL Reconfiguration Commit
[ Activation CFN ]
142
Channels Main IEs
RNC SGSN Node-B UE
Session Management – PS Session Setup and Release
RAB Assignment Procedure: RRC Radio Bearer Setup Message
Description: On successful Iu, IuB resource (and User Plane, L1/L2 at RNC!!), RNC initiates Radio Bearer Setup towards UE on DCCH, for requested PS RAB, with selected configuration and allocated resource information.
Main IEs Activation time (CFN!!) RB info [ RAB ID, CN ID, RLC Config, RB mapping ..]
RRC State (Cell DCH!!) TrCH info [ UL/DL TFCS, DCH IDs, TFS, etc.. ]
Radio info[e.g. Frequency, Codes, Power info, etc.. ] …
Channels
DCCH : DCH : DPDCH
RRC Connection Establishment
Signalling Connection Establishment (Attach Request) Procedure
Identification / Authentication / Security Procedure
Attach Accept Procedure
PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( IuB Setup!! )
RRC RRC DCCH: Radio Bearer Setup
[ Integrity Check Info, Activation CFN, RB Setup info, TrCH info, RL info ]
143
Channels Main IEs
RNC SGSN Node-B UE
Session Management – PS Session Setup and Release
RAB Assignment Procedure: RRC Radio Bearer Setup Complete Message
Description: UE RRC validates, received RB setup configuration, stores it and activates the same at specified activation CFN. After activation of new configuration, it sends Radio Bearer Setup Complete message to RNC.
Main IEs RRC Transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq no ]
START Value (PS!!)
Channels
DCCH : DCH : DPDCH
RRC Connection Establishment
Signalling Connection Establishment (Attach Request) Procedure
Identification / Authentication / Security Procedure
Attach Accept Procedure
PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( IuB Setup!! )
RRC RRC DCCH: Radio Bearer Setup
[ Integrity Check Info, Activation CFN, RB Setup info, TrCH info, RL info ]
RRC RRC DCCH: Radio Bearer Setup Complete
[ RRC Transaction ID, Integrity Check info, START value ]
On activation CFN, Node-B, UE and RNC L1/L2 activates pending new configuration!!.
144
Channels Main IEs
RNC SGSN Node-B UE
Session Management – PS Session Setup and Release
RAB Assignment Procedure: RANAP RAB Assignment Response Message
Description: On reception of RRC Radio Bearer Setup Complete message, RNC send successful response to RAB Assignment procedure, using RANAP RAB Assignment Response message towards SGSN.
Main IEs RAB ID (of successfully established RAB!!)
Assigned (Chosen) RAB Parameters (if RAB QoS negotiation has performed!!)
Transport Layer Info [ i.e. TLA(IP),Binding ID(TEID)]
Channels
SCCP : MTP3b : SAAL : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Attach Request) Procedure
Identification / Authentication / Security Procedure
Attach Accept Procedure
PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( IuB Setup!! )
RRC RRC DCCH: Radio Bearer Setup
[ Integrity Check Info, Activation CFN, RB Setup info, TrCH info, RL info ]
RRC RRC DCCH: Radio Bearer Setup Complete
[ RRC Transaction ID, Integrity Check info, START value ]
On activation CFN, Node-B, UE and RNC L1/L2 activates pending new configuration!!.
RANAP RANAP RAB Assignment Response
[ RAB ID ]
145
Channels Main IEs
RNC SGSN Node-B UE
Session Management – PS Session Setup and Release
Session Setup Accept Procedure: RANAP Direct Transfer Message
Description: After successful RAB setup in UTRAN and GTP Tunnel setup towards GGSN, SGSN SM respond with Activate PDP Context Accept message back, which is forwarded using RANAP Direct Transfer Message.
Main IEs NAS–PDU [Activate PDP Context Accept, Negotiated QoS, Priority, PDP address,]
Channels
SCCP : MTP3b : SAAL : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Attach Request) Procedure
Identification / Authentication / Security Procedure
Attach Accept Procedure
PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
RANAP RANAP Direct Transfer
[ NAS PDU (Active PDP Context Accept) ]
146
Channels Main IEs
RNC SGSN Node-B UE
Session Management – PS Session Setup and Release
RAB Assignment Procedure: RRC Downlink Direct Transfer Message
Description: RNC RRC transparently encodes received NAS PDU, in RANAP Direct Transfer message, into RRC Downlink Direct Transfer message and send it to UE on DCCH (SRB-3).
Main IEs RRC Transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ]
CN Domain ID (PS!!) NAS–PDU [Activate PDP Context Accept, Negotiated QoS, Priority, PDP address,]
Channels
DCCH : DCH : DPDCH
RRC Connection Establishment
Signalling Connection Establishment (Attach Request) Procedure
Identification / Authentication / Security Procedure
Attach Accept Procedure
PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
RANAP RANAP Direct Transfer
[ NAS PDU (Active PDP Context Accept) ]
RRC RRC DCCH: Downlink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
147
Channels Main IEs
RNC SGSN Node-B UE
Session Management – PS Session Setup and Release
Session Established: Data Transfer!!
Description: Once session is established, data transfer continues until, either of side initiates Session Release (PDP context deactivation!!) Procedure.
Main IEs Channels
RRC Connection Establishment
Signalling Connection Establishment (Attach Request) Procedure
Identification / Authentication / Security Procedure
Attach Accept Procedure
PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
PDP Context Activation (Session Establishment) Accept Procedure
Session Established : Data Transfer!!
148
Channels Main IEs
RNC SGSN Node-B UE
Session Management – PS Session Setup and Release
Session Release Procedure: RRC Uplink Direct Transfer Message
Description: Either MS or n/w NAS (SM) can initiate session release!! e.g.UE NAS (SM) initiates session release using De-activate PDP Context Request message, encoded NAS PDU, in RRC Uplink Direct Transfer message.
Main IEs RRC Transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ]
CN Domain ID (PS!!) NAS–PDU [De-activate PDP Context Request, SM Cause, Teardown Indicator]
Channels
DCCH : DCH : DPDCH
RRC Connection Establishment
Signalling Connection Establishment (Attach Request) Procedure
Identification / Authentication / Security Procedure
Attach Accept Procedure
PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
PDP Context Activation (Session Establishment) Accept Procedure
Session Established : Data Transfer!!
RRC RRC DCCH: Uplink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
149
Channels Main IEs
RNC SGSN Node-B UE
Session Management – PS Session Setup and Release
Session Release Procedure: RANAP Direct Transfer Message
Description: RNC transparently forwards received NAS PDU in RRC Uplink Direct Transfer, to Core Network (MSC/VLR), using RANAP Direct Transfer Message.
Main IEs NAS–PDU [De-activate PDP Context Request, SM Cause, Teardown Indicator]
Channels
SCCP : MTP3b : SAAL : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Attach Request) Procedure
Identification / Authentication / Security Procedure
Attach Accept Procedure
PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
PDP Context Activation (Session Establishment) Accept Procedure
Session Established : Data Transfer!!
RRC RRC DCCH: Uplink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
RANAP RANAP Direct Transfer
[ NAS PDU (De-activate PDP Context Request) ]
150
Channels Main IEs
RNC SGSN Node-B UE
Session Management – PS Session Setup and Release
Session Release Procedure: RANAP Direct Transfer Message
Description: SGSN SM, preserves or initiate release of CN resources as per teardown indicator, responds back to UE with De-activate PDP Context Accept message, encoded NAS PDU, using RANAP Direct Transfer message.
Main IEs NAS–PDU [ De-activate PDP Context Accept Msg type, Transaction ID ]
Channels
SCCP : MTP3b : SAAL : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Attach Request) Procedure
Identification / Authentication / Security Procedure
Attach Accept Procedure
PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
PDP Context Activation (Session Establishment) Accept Procedure
Session Established : Data Transfer!!
RRC RRC DCCH: Uplink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
RANAP RANAP Direct Transfer
[ NAS PDU (De-activate PDP Context Request) ]
RANAP RANAP Direct Transfer
[ NAS PDU (De-activate PDP Context Accept) ]
151
Channels Main IEs
RNC SGSN Node-B UE
Session Management – PS Session Setup and Release
Session Release Procedure: RRC Downlink Direct Transfer Message
Description: RNC RRC transparently encodes received NAS PDU, in RANAP Direct Transfer message, into RRC Downlink Direct Transfer message and send it to UE on DCCH (SRB-3).
Main IEs RRC Transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ]
CN Domain ID (PS!!) NAS–PDU [ De-activate PDP Context Accept Msg type, Transaction ID ]
Channels
DCCH : DCH : DPDCH
RRC Connection Establishment
Signalling Connection Establishment (Attach Request) Procedure
Identification / Authentication / Security Procedure
Attach Accept Procedure
PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
PDP Context Activation (Session Establishment) Accept Procedure
Session Established : Data Transfer!!
RRC RRC DCCH: Uplink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
RANAP RANAP Direct Transfer
[ NAS PDU (De-activate PDP Context Request) ]
RANAP RANAP Direct Transfer
[ NAS PDU (De-activate PDP Context Accept) ]
RRC RRC DCCH: Downlink Direct Transfer
[ Integrity Check info, CN Domain ID, NAS Message ]
152
Channels Main IEs
RNC SGSN Node-B UE
Session Management – PS Session Setup and Release
Iu Connection Release Procedure: RANAP Iu Release Command Message
Description: On successful completion of Session Release (PDP context de-activation) procedure, SGSN initiate Iu (Signalling!!) Connection Release procedure, using RANAP Iu Release Command towards RNC.
Main IEs Cause ( Normal Release!! )
Channels
SCCP : MTP3b : SAAL : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Attach Request) Procedure
Identification / Authentication / Security Procedure
Attach Accept Procedure
PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
PDP Context Activation (Session Establishment) Accept Procedure
Session Established : Data Transfer!!
PDP Context De-activation (Session Release!!) Procedure
RANAP RANAP Iu Release Command
[ Cause ]
153
Channels Main IEs
RNC SGSN Node-B UE
Session Management – PS Session Setup and Release
Iu Connection Release Procedure: RANAP Iu Release Complete Message
Description: RNC confirms Iu signalling connection release, using RANAP Iu Release Complete message to CN. It also initiates lower layer (SCCP) connection release, established for respective Iu signalling Connection.
Main IEs Channels
SCCP : MTP3b : SAAL : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Attach Request) Procedure
Identification / Authentication / Security Procedure
Attach Accept Procedure
PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
PDP Context Activation (Session Establishment) Accept Procedure
Session Established : Data Transfer!!
PDP Context De-activation (Session Release!!) Procedure
RANAP RANAP Iu Release Command
[ Cause ]
RANAP RANAP Iu Release Complete
triggers
SCCP SCCP Released
[ SRC/DST References, Cause ]
SCCP SCCP Release Complete [ SRC/DST References ]
154
Channels Main IEs
RNC SGSN Node-B UE
Session Management – PS Session Setup and Release
RRC Connection Release: RRC Connection Release Message
Description: RNC initiates RRC connection release, by sending RRC Connection Release message to UE on DCCH (SRB1).
Main IEs RRC transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ]
Release Cause (Normal!!)
Channels
DCCH : DCH : DPDCH
RRC Connection Establishment
Signalling Connection Establishment (Attach Request) Procedure
Identification / Authentication / Security Procedure
Attach Accept Procedure
PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
PDP Context Activation (Session Establishment) Accept Procedure
Session Established : Data Transfer!!
PDP Context De-activation (Session Release!!) Procedure
Iu Connection Release triggers
RRC RRC DCCH: RRC Connection Release
[ Integrity Check info, Release Cause ]
155
Channels Main IEs
RNC SGSN Node-B UE
Session Management – PS Session Setup and Release
RRC Connection Release: RRC Connection Release Complete Message
Description: UE responds with RRC Connection Release Complete message on DCCH to RNC, release resources allocated for PS RAB, RB, etc.. terminates RRC connection and move to RRC IDLE state.
Main IEs RRC transaction ID, Integrity Check Info [ i.e. MAC, RRC Msg Seq No ]
Channels
DCCH : DCH : DPDCH
RRC Connection Establishment
Signalling Connection Establishment (Attach Request) Procedure
Identification / Authentication / Security Procedure
Attach Accept Procedure
PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
PDP Context Activation (Session Establishment) Accept Procedure
Session Established : Data Transfer!!
PDP Context De-activation (Session Release!!) Procedure
Iu Connection Release triggers
RRC RRC DCCH: RRC Connection Release
[ Integrity Check info, Release Cause ]
RRC RRC DCCH: RRC Connection Release Complete
[ Integrity Check info ]
156
Channels Main IEs
RNC SGSN Node-B UE
Session Management – PS Session Setup and Release
UE Context Cleanup: NBAP Radio Link Deletion Request Message
Description: On reception of RRC Connection Release Complete message, RNC initiates cleanup of UE context, to release resources allocated for PS RAB, RB, etc.. initiate Radio Link Deletion Request towards Node-B.
Main IEs Transaction ID, CRNC Comm Ctxt ID, Node-B Comm Ctxt ID,
RL ID(s)
Channels
SSCF : SSCOP : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Attach Request) Procedure
Identification / Authentication / Security Procedure
Attach Accept Procedure
PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
PDP Context Activation (Session Establishment) Accept Procedure
Session Established : Data Transfer!!
PDP Context De-activation (Session Release!!) Procedure
Iu Connection Release RRC Connection Release
NBAP NBAP Radio Link Deletion Request
[ RL ID(s) ]
157
Channels Main IEs
RNC SGSN Node-B UE
Session Management – PS Session Setup and Release
UE Context Cleanup: NBAP Radio Link Deletion Response Message
Description: On reception Radio Link Deletion Request, Node-B release all resources associated with respective RL Ids, allocated for PS call. On success, respond with Radio Link Deletion Response message to RNC.
Main IEs Transaction ID, CRNC Comm Ctxt ID,
Channels
SSCF : SSCOP : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Attach Request) Procedure
Identification / Authentication / Security Procedure
Attach Accept Procedure
PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
PDP Context Activation (Session Establishment) Accept Procedure
Session Established : Data Transfer!!
PDP Context De-activation (Session Release!!) Procedure
Iu Connection Release RRC Connection Release
NBAP NBAP Radio Link Deletion Request
[ RL ID(s) ]
NBAP NBAP Radio Link Deletion Response
[ CRNC Comm Ctxt ID ]
158
Channels Main IEs
RNC SGSN Node-B UE
Session Management – PS Session Setup and Release
UE Context Cleanup: ALCAP Release Request/Confirm Message
Description: After RL deletion, RNC initiate AAL2 bearer release allocated for DCH data streams. RNC ALCAP request release with Release Request message, Node-B ALCAP confirms it with Release Confirm message.
Main IEs DSAID Cause
DSAID
Channels
STC.2 / SSCF : SSCOP : AAL5
RRC Connection Establishment
Signalling Connection Establishment (Attach Request) Procedure
Identification / Authentication / Security Procedure
Attach Accept Procedure
PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
PDP Context Activation (Session Establishment) Accept Procedure
Session Established : Data Transfer!!
PDP Context De-activation (Session Release!!) Procedure
Iu Connection Release RRC Connection Release
NBAP NBAP Radio Link Deletion Request
[ RL ID(s) ]
NBAP NBAP Radio Link Deletion Response
[ CRNC Comm Ctxt ID ]
ALCAP ALCAP ALCAP Release Request
[ DSAID, Cause ]
ALCAP ALCAP ALCAP Release Confirm
[ DSAID ]
Twice!!, One for Signalling DCH and other for PS DCH AAL2 bearer Release!!
159
Channels Main IEs
RNC SGSN Node-B UE
Session Management – PS Session Setup and Release
PS Session Setup and Released!!
Description: PS Session Established, Packet data Transferred, Session Released, UE back to Idle mode!!..
Main IEs Channels
RRC Connection Establishment
Signalling Connection Establishment (Attach Request) Procedure
Identification / Authentication / Security Procedure
Attach Accept Procedure
PDP Context Activation (Session Establishment) Request Procedure RAB Assignment Procedure ( Iu, IuB, Uu Setup!! )
PDP Context Activation (Session Establishment) Accept Procedure
Session Established : Data Transfer!!
PDP Context De-activation (Session Release) Procedure
Iu Connection Release RRC Connection Release
UE Context Cleanup
161
Backup!!..
• Misc..