s08 3g rpls2_v2-0 mm and cm
TRANSCRIPT
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1 NOKIA topic: MM & CM Procedures/ July 2003 /Markus Wimmer
Mobility Managementand
Connection Management
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Objectives
At the end of this module, you will be able to
Remember the NAS related location management function
See the relationship between 2G and 3G MM and CM procedures
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MM and CM Procedures
NAS controls
RRC
NAS:
Mobility Management (MM PMM)
UE CN
AS:
UTRAN
RANAP
Connection Management (CC, SS, SMS, SM)
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Part IMobility Management
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Mobility Management (MM) ProceduresMM procedures
MM commonprocedures
MM specificprocedures
MM connection mgtprocedures
Network initiated:
TMSI reallocation
authentication
identification
MM information
abort (MM connection established)
UE initiated:
IMSI detach
normal LUP
periodic LUP
IMSI attach
MM connection establishment
MM connection release
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Packet Switched Mobility Management ProceduresGMM procedures
GMM commonprocedures
GMM specificprocedures
Network initiated:
P-TMSI (re-) allocation
GPRS authentication and ciphering
GPRS identification
GPRS information
Network initiated:
GPRS detach and combined GPRS detach
UE initiated:
GPRS attach and combined GPRS attach
GPRS detach and combined GPRS detach
normal routing area update and combined routing
area update
periodic routing area update
service request
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PS Mobility Management States
PMM-DETACHED
PMM-CONNECTED PMM-IDLE
GPRS DetachGPRS Attach Reject
RAU Reject
GPRS Attach
Implicit GPRS Detach
(SGSN: MS Reachable
Timer expires)
PS Signalling Connection
Release
PS Signalling Connection
Establishment
3G-SGSN only:
S-RNC Relocation
(adopted from TS 23.060 V3.13.0)
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Packet Data Protocol States
INACTIVE ACTIVE
(adopted from TS 23.060 V3.13.0)
Activate PDP Context
Deactivate PDP Context
or
MM context change to PMM-DETACHED
UE 3G-SGSN GGSN
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Mobility Management MessagesRegistration
Network initiated:
LOCATION UPDATING ACCEPT
LOCATION UPDATING REJECT
UE initiated:
IMSI DETACH INDICATION
LOCATION UPDATINGREQUEST
Security
Connection Management
Miscellaneous
Network initiated:
AUTHENTICATION REJECT
AUTHENTICATION REQUEST
IDENTITY REQUEST
TMSI REALLOCATION
COMMAND
UE initiated:
AUTHENTICATION RESPONSE
IDENTITY RESPONSE
TMSI REALLOCATION
COMPLETE
Network initiated:
CM SERVICE ACCEPT
CM SERVICE REJECT
ABORT
UE initiated: CM SERVICE REQUEST
CM RE-ESTABLISHMENT
REQUEST
CM SERVICE ABORT
Network initiated:
MM INFORMATION
MM STATUS
UE initiated:
MM STATUS
MM NULL
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GPRS Mobility Management MessagesRegistration
Network initiated:
ATTACH ACCEPT
ATTACH REJECT
DETACH REQUEST
ROUTING AREA UPDATE ACCEPT
ROUTING AREA UPDATE REJECT
UE initiated:
ATTACH REQUEST
ATTACH COMPLETE
DETACH ACCEPT
DETACH REQUEST
ROUTING AREA UPDATE REQUEST
ROUTING AREA UPDATE
COMPLETE
Security
MiscellaneousNetwork initiated:
AUTHENTICATION AND
CIPHERING REQUEST
AUTHENTICATION AND
CIPHERING REJECT
IDENTITY REQUEST
P-TMSI REALLOCATION COMMAND SERVICE ACCEPT
SERVICE REJECT
UE initiated:
AUTHENTICATION AND
CIPHERING RESPONSE
AUTHENTICATION AND
CIPHERING FAILURE
IDENTITY RESPONSE P-TMSI REALLOCATION COMPLETE
SERVICE REQUEST
Network initiated:
GMM STATUS
GMM INFORMATION
UE initiated:
GMM STATUS
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Network Mode of Operation and UE Modes
UTRAN3G-MSC/VLR
3G-SGSN
Gs
NMO I: Gs interface is present
NMO II: Gs interface is not present
UE
UE modes:
CS mode
PS mode
CS/PS mode
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Location Area ConceptsLocation Area
Routing Area
Service Area
LA1 LA2
MCC MNC LACAI =
MCC MNC LACAI = RAC
LA2RA1
RA2RA3
RA4
MCC MNC LACAI = SAC
LA1LA2A1
SA2SA3
SA4SA5
SA7SA8
SA6
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Location Update Types
time
timer set
last interaction
with network
Periodic timer
set Periodic timer
expires
periodic update
initiated by UE
periodic location
update (T3212)
normal location
update
LA1 / RA 1
LA 2 / RA 2
IMSI attachI am off
I am on again
3G-MSC/VLR
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Periodic Location Update Timers and the Attach Flag
Node B
UTRANSystem Information ( )
UE RNCSIB1CS domain PS domain
T3212
ATT-flag
RAC
NMO
IE: CN domain specific
GSM-MAP NAS system
3G-SGSN
ATTACH ACCEPT ( ) / ROUTING AREA UPDATE ACCEPT ( )
UE T3312(default 54 min)
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Location Update Status
USIM
USIMoperator XYZ
CS Mode PS ModeU1 GU1pdated
Last LU and registration
successful
USIM has
valid LAI
possibly TMSI
Last RAU and registration
successful
USIM has
valid RAI
possibly P-TMSI CK, IK, CKSN
U2 GU2ot UpdatedLast LU failed
USIM has no valid location
information and key are
deleted.
Last RAU failedUSIM has no valid routing
area information and key are deleted.
U3 GU3oaming Not AllowedLast LU successful, but
registration rejected.
USIM may have
valid LAI
possibly TMSI
Last RAU successful, but
registration rejected. USIM USIM may have
valid RAI
possibly P-TMSI CK, IK, CKSN
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Location Update Procedure
UELocation Updating Request ( )
3G-MSC/VLR0101: mobility management message
0000
xx001000: location updating request
Normal LU/ periodic LU / IMSI attach
Follow on request pending: yes / no
MCC + MNC + LAC (previous LAI)
for GSM MSs: revision level, controlled early classmark
sending option, A5/1 support, RF power capability.
TMSI, if not available => IMSI (previous TMSI)
See MS classmark; LCS VA capability, SoLSA support, A5/2 support,
A5/3 support, CM Service Prompt support, etc.
Standard format of
every NAS message
Mobility managementprotocol discriminator
Mobile identity
Mobile stationclassmark
Location areaidentification
Ciphering keysequence number
Location updating type
Skip IndicatorLocation Updating
Request message type
Mobile stationclassmark for UMTS
OP
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Location Update Procedure
UELocation Updating Accept ( )
3G-MSC/VLRMobility managementprotocol discriminator
Follow on proceedMobile Identity
Skip IndicatorLocation Updating
Accept message type
CTS permissionEquivalent PLMNs
Location areaidentification
0101: mobility management message
0000
xx000010: location updating accept
TMSI, if not available => IMSI (new TMSI)
the MS is allowed to use GSM-Cordless Telephony System in this LA
number of PLMNs and their MCC and MNC.OP
OP
OP
OP
MCC + MNC + LAC (new LAI)
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Location Update ProcedureUE 3G-MSC/VLR
LOCATION UPDATING REQUEST ( )(Identification Procedure)
Authentication Procedure
Security Mode Procedure
Start T3210
T3210= 20 s
LOCATION UPDATING ACCEPT ( )
TMSI confirmationT3250 (= 12 s)
(*) Prolonged RR connection T3255(e.g. if pending request in Location Updating Req.)
Stop T3210U1
e.g. new TMSIfollow on proceed
(*)
TMSI REALLOCATION COMPLETE ( )CM message pendingT3240 (= 10 s)
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Location Update ProcedureUE
3G-MSC/VLRLOCATION UPDATING REQUEST ( )
Authentication Procedure
Security Mode Procedure
Start T3210
T3210= 20 s LOCATION UPDATING REJECT ( )
Stop T3210U3
T3240(= 10 s)
Wait for RR connection to be release
time
T3210 expiryStart T3211U1, if UE inno new LAU Req. T3211 expiryLU Req.
T3210 expiryU1, if LAI on USIM equal to BCCH, and
attempt counter < 4, and
user status was U1U2, if LAI on USIM not equal to BCCH
attempt counter 4, or
user status was not U1
15 s
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IMSI Detach
UE
3G-MSC/VLRMSI ATTACH INDICATION ( )RR Connection Establishment
Start T3220
T3220= 5 s
RR Connection Release
Stop T3210
Abnormal Situation:
UE cannot establish
RR Connection
Abort IMSI Detach
T3220 Expiry
UE aborts internally
its RR sub-layer
no response release of ongoing
MM connections release ofRR connection
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T3302 expiryATTACH Req.
GPRS AttachUE
ATTACH REQUEST ( )
(Identification Procedure)
Authentication and Ciphering Procedure
Start T3310
T3210= 15 s
ATTACH ACCEPT ( )
(P-)TMSI confirmationT3350 (= 6 s)
Stop T3310GU1
e.g. new TMSIor P-TMSI
ATTACH COMPLETE ( )
time
T3310 expiryStart T3311ATTACHReq.
T3211 expiryATTACH Req.
T3310 expiry
15 s
T3310 expiryStart T3311
GPRS attach request counter = 1
T3310 expiryStart T3302
GPRS attach request counter 5mobility status = GU2
T3302 (default 12 min.)
3G-SGSN
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UE Initiated GPRS Detach
UEDETACH REQUEST ( )
(Identification Procedure)
Authentication and Ciphering Procedure
Start T3321
T3321= 15 s DETACH ACCEPT ( )
Stop T3321
3G-SGSN
IE Detach type:
GPRS detach / IMSI detach / combined GPRS/IMSI detach
normal detach/ power switch off
UEDETACH REQUEST ( )
3G-SGSN
normal detach
power switch off
Expiry: retransmission of DETACH REQUEST (up to 4 times)
Releases allresources onlower layers
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Network Initiated GPRS DetachUE
DETACH REQUEST ( )(Identification Procedure)
Authentication and Ciphering Procedure
Start T3322
T3322= 6 s
DETACH ACCEPT ( )Stop T3322
3G-SGSNre-attach required
ATTACH REQUEST ( )
terminate alllogical links andPDP Contexts
re-start alllogical links andPDP Contexts
UE DETACH REQUEST ( )DETACH ACCEPT ( )
3G-SGSN
ROUTING AREA UPDATE REQUEST ( )
IMSI detach
combined RA/LA updating with IMSI attach
re-attach not
requiredSee re-attach required, but with no message following the DETACH ACCEPT.
U2
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T3302 expiryATTACH Req.
Routing Area UpdateUE
ROUTING AREA UPDATE REQUEST ( )
(Identification Procedure)
Authentication and Ciphering Procedure
Start T3330
T3330= 15 s
ROUTING AREA UPDATE ACCEPT ( )
T3350 (= 6 s)
Stop T3330GU1
e.g. new TMSI and/or P-TMSIor Receive N-PDU number needed
ROUTING AREA UPDATE COMPLETE ( )
time
T3330 expiryStart T3311ATTACHReq. T3211 expiryATTACH Req.
T3330 expiry
15 s
T3330 expiryStart T3311
GPRS attach request counter = 1
T3330 expiryStart T3302
GPRS attach request counter 5mobility status = GU2
T3302 (default 12 min.)
3G-SGSN
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Radio Bearer Setup
The Service Request ProcedureUE
SERVICE REQUEST ( )Authentication and Ciphering Procedure
Start T3317
T3317= 10 s
SERVICE ACCEPT ( )Stop T33173G-SGSN
T3317 expiry I abort the
procedure
UESERVICE REQUEST ( )
Authentication and Ciphering Procedure
SERVICE REJECT ( )
3G-SGSN
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The Service Request Procedure
Protocol discriminator
P-TMSIService Type
Skip indicator
PDP context status OP
Service RequestCiphering key
sequence number
UE 3G-SGSNSERVICE REQUEST ( )
000: Signalling
001: Data
010: Paging Response
NSAPI x: 0 = corresponding PDP context is inactive1 = corresponding PDP context is inactive
X = 0 .. 15, (0..4 are coded as inactive)
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Nokia Parameters for NAS Mobility ManagementRAN 1 supports only NMO II, where the Gs interface is not present. Consequently, procedures such as combined GPRS attach is not
supported.
RNC: PS_NMOIn Operation Mode I it is possible to have combined CS and PS side paging via SGSN. In Operation Mode II the combined
paging procedure is not possible (and neither are combined attach procedures). Used only for the PS domain. NMO is part of PS
CN domain specific NAS System information in SIB1.
0 (Network Mode of Operation I), 1 (Network Mode of Operation II), default: 1
RNC: CSAttachDetachAllowedDefines whether IMSI attach and detach are allowed or not. Given only for CS domain. This is part of CS CN domain specificNAS System information in SIB1.
0 (UE shall not apply these procedures), 1 (MSs shall apply these procedures);
default value: 1
RNC: CNDomainIndicatorIndicates the CN domain from which the message originates, or to which the message will be sent. This parameter is also part of
System Information Block 1.
0 (Circuit Switched), 1 (Packet Switched)
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Nokia Parameters for NAS Mobility Management RNC: CS_T3212
The timeout value, in decihours (6 min), for periodic location updating. Given
only for CS domain. (SIB1). The value 0 is used for an infinite timeout value.[0 ... 255] decihours, step 1 decihours; default value: 0 decihours
RNC: PS_T3313
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Part IIConnection Management
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Radio Bearer Setup
UE Initiated PDP Context ActivationUE
3G-SGSN
GGSNACTIVATE PDP CONTEXT REQUEST ( )
ACTIVATE PDP CONTEXT ACCEPT ( )
CREATE PDP CONTEXT REQUEST
CREATE PDP CONTEXT RESPONSET3380
= 30 s
time
T3330 expiry(*)*) T3211 expiry(*)
T3380 expiry
counter = 1(*) := ACTIVATE PDP CONTEXT REQUEST
T3211 expiry(*)
counter = 4 UE aborts procedure
UPDATE PDP CONTEXT REQUESTUPDATE PDP CONTEXT RESPONSE
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PDP Context Activation
Protocol discriminator
Requested QoSRequested LLC SAPI
Transaction indicatorActivate PDP contextrequest message ID
Requested PDP addressAccess Point Name OP
Requested NSAPI
Protocol configurationoptions OP
1010: GPRS session management messages
01000001: Activate PDP context request
Delay class
Reliability class
Precedence class
Mean and peak throughput class
Maximum UL/DL bit rate
Transfer delay
Guaranteed UL/DL bit rate
Residual BER Delivery order
etc.
UE 3G-SGSNACTIVATE PDP CONTEXT REQUEST ( )
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PDP Context Activation
Protocol discriminator
Negotiated QoSNegotiated LLC SAPI
Transaction indicatorActivate PDP contextrequest message ID
PDP address
Packet Flow Identifier
OPProtocol configuration
optionsOP
Radio prioritySpare half octet
OP
1010: GPRS session management messages
01000010: Activate PDP context accept
Not required in UMTS, but transmitted to
support UMTS GPRS cell reselection
UE 3G-SGSNACTIVATE PDP CONTEXT ACCEPT ( )
T hi h PDP if PDU h
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Secondary PDP Contexts
UEGGSN
PDN
PDP PDU
To which PDP context if PDUs have
the same PDP address?
UEGGSN
ACTIVATE SECONDARY PDP CONTEXT REQUEST ( )
ACTIVATE SECONDARY PDP CONTEXT ACCEPT ( )
CREATE PDP CONTEXT REQUESTCREATE PDP CONTEXT RESPONSET3380
= 30 s
Traffic Flow Template(TFT) attributes Source Address and Subnet Mask
Protocol Number (IPv4) / Next Header (IPv6)
Destination Port Range Source Port Range
IPSec Security Parameter Index (SPI)
Type of Service (TOS) (IPv4) / Traffic class (IPv6) and Mask Flow Label (IPv6)
SGSN
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Call Setup Flow
UE 3G-MSC/VLRSETUP ( ) most important info is the called party hp no.
CALL PROCEEDING
ALERTING
CONNECT
CONNECT ACKNOWLEDGE
Call control protocol discriminator
Transaction identifier
Setup type message
Bearer capability 1e.g. radio channel requirement, speech version indication,
information transfer capability, modem type, etc.
Called party BCD number
mandatory
IEs