04a gr interface.pdf

1 © Nokia Siemens Networks CN3203EN01GLN00

PCNSIG

Gr interface

Objectives

After this training session, the student should be able to:

• Explain how the interaction between SGSN and HLR works

• List the procedures supported by SGSN - HLR interaction

• Describe the following procedures:

– Update GPRS location

– Insert Subscriber Data

– Purge Mobile Station

– Cancel Location

NSN - Fully 3GPP Compliant Interfaces

Protocol stack on Gr interface

TypeUnitOrDepartmentHereTypeYourNameHere

SGSNHLR

TCAPTCAP

MAPMAP

Protocol stack on Gr interface

Transaction Capabilities Application Part

Transaction sub-layer

Component sub-layer

INVOKE

RETURN_RESULT

RETURN_ERROR

REJECT

TC_BEGIN

TC_CONTINUE

TC_END

TC_ABORT

to peer

Operations

Results

Errors

Update GPRS Location Procedure (Inter SGSN RA update)

HLR new SMMU old SMMU

2. MAP. Cancel Location (IMSI)

2. MAP. Cancel Location Ack

1. MAP. Update Location (IMSI, SGSN nbr, SGSN addr)

3. MAP. Insert subscriber Data (MSISDN, GPRS subcr data)

3. MAP. Insert subscriber Data Ack

4. MAP. Update Location Ack

Example trace of Update GPRS Location message (1/3) MSU

- BSN: 56 (38h) BIB: 1 FSN: 57 (39h) FIB: 1

- SCCP

- network indicator : reserved national

- data, length : 62, (3Eh)

UDT - UNIT DATA

SCCP DPC: 2400 (0960h)

SCCP OPC: 1856 (0740h)

SCCP SLS: 13 (0Dh)

Protocol Class

- protocol class : 80h, conn.less, return msg

Called Party Address

- length 13 (0Dh)

- full GT configuration

- routing based on global title

- subsystem is HLR

- translation type : 0 (00h)

- encoding : BCD, odd number of digits

- numbering plan : ISDN/mobile (E.214)

- nature of address : international number

- address signals : 392699900000012

Calling Party Address

- length 12 (0Ch)

- Subsystem nr: 149 (95h)

- numbering plan : ISDN/telephony (E.163, 164)

SCCP User Data

- length 83 (53h)

SUBSYSTEM 6 : HLR

OrigTransactionID: 87 C0 B3 00

DialoguePortion

External

ObjectIdentifier: 0-0-17-773-1-1-1 (dialog id)

Single-ASN.1-type

DialogueRequest

Protocol-Version: 00000111 10000000

Application-Context-Name

ObjectIdentifier: 0-4-0-0-1-0-32-3 (GPRS location update)

ComponentPortion

Invoke

InvokedID: 00

LocalOperationCode: 17

Parameter: 48 (30h) Length: 31 (1Fh)

Tag: Universal, Constructed, value: 10h

- length: 31 (1Fh)

Tag: Universal, Primitive, value: 04h

- length: 8 (08h)

- data: 22 02 93 09 00 00 10 F2

- length: 8 (08h)

- data: 91 93 62 99 00 00 01 F0

- length: 5 (05h)

- data: 04 AC 1F 2C 22

Tag: Context, Constructed, value: 00h

- length: 2 (02h)

Tag: Context, Primitive, value: 03h

- length: 0 (00h)

Example trace of Update GPRS Location message (2/3)

Example trace of Update GPRS Location message (3/3)

UPDATE GPRS LOCATION ARG : 23 (17h)

UpdateGPRSLocationArg

- TBCD String : 222039900000012

SGSN-Number

- nature of address ind. : international

- numbering plan ind. : ISDN/Telephony (E.164)

- TBCD String : 3926990000100

SGSN-Address

- IPv4 address : 172.31.44.34 (SMMU)

sgsn-Capability

gprsEnhancementsSupportIndicator

Example trace Insert Subscriber Data message (1/4) MSU

- BSN: 57 (39h) BIB: 1 FSN: 57 (39h) FIB: 1

- SCCP

UDT - UNIT DATA

SCCP DPC: 1856 (0740h)

SCCP OPC: 2400 (0960h)

SCCP SLS: 1 (01h)

Protocol Class

- length 12 (0Ch)

- length 11 (0Bh)

- subsystem is HLR

- encoding : BCD, even number of digits

SCCP User Data

- length 120 (78h)

Example trace Insert Subscriber Data message (2/4)

SUBSYSTEM 6 : HLR

CONTINUE

OrigTransactionID: H...

DestTransactionID: ....

DialoguePortion

External

ObjectIdentifier: 0-0-17-773-1-1-1

Single-ASN.1-type

DialogueResponse

ObjectIdentifier: 0-4-0-0-1-0-32-3

Result

- Accepted (0)

Result-Source-Diagnostic

Dialogue-Service-User

- Null (0)

ComponentPortion

Invoke

Example trace Insert Subscriber Data message (3/4) InvokedID: .

LocalOperationCode: .

Parameter: 48 (30h) Length: 50 (32h)

- length: 50 (32h)

- length: 7 (07h)

- data: ..bYU.!

- length: 1 (01h)

- data: .

- length: 33 (21h)

- length: 0 (00h)

- length: 29 (1Dh)

- length: 27 (1Bh)

- length: 1 (01h)

- data: .

- length: 2 (02h)

- data: .!

- length: 3 (03h)

- data: #B.

- length: 2 (02h)

- data: .*

- length: 9 (09h)

- data: ...@@.A@@

- length: 1 (01h)

- data: .

Example trace Insert Subscriber Data message (4/4) INSERT SUBSCRIBER DATA ARG : 7 (07h)

InsertSubscriberDataArg

MS-ISDN

- TBCD String : 392695550012

SubscriberStatus

- ServiceGranted (00h)

GPRSSubscriptionData

completeDataListIncluded

GPRSDataList

PDP-Context

PDP-ContextId: 1

PDP-Type

- PDP type organization : IETF

- PDP type number : PPP

QoS-Subscribed

- Reliability class : Unacknowledged GTP & LLC, ack. RLC

- Delay class : Delay class 4 (best effort)

- Subscribed precedence : Normal priority

- Peak throughput : Up to 8 000 octet/s

- Mean throughput : Unavailable

APN: .*

ext-QoS-Subscribed: ...@@.A@@

networkAccessMode

- bothMSCAndSGSN (00h)

Purge Mobile Station Procedure

The Purge function allows a SGSN to inform the HLR that it has deleted the MM and PDP contexts of a detached MS.

Example trace of Purge MS message (1/3) MSU

- BSN: 57 (39h) BIB: 1 FSN: 58 (3Ah) FIB: 1

- SCCP

UDT - UNIT DATA

SCCP DPC: 2400 (0960h)

SCCP OPC: 1856 (0740h)

SCCP SLS: 13 (0Dh)

Protocol Class

- length 11 (0Bh)

- subsystem is HLR

- length 12 (0Ch)

SCCP User Data

- length 72 (48h)

Example trace of Purge MS message (2/3) SUBSYSTEM 6 : HLR

OrigTransactionID: ....

DialoguePortion

External

Single-ASN.1-type

DialogueRequest

ComponentPortion

Invoke

InvokedID: .

LocalOperationCode: C

Parameter: 163 (A3h) Length: 20 (14h)

- length: 20 (14h)

- length: 8 (08h)

- data: ".......

- length: 8 (08h)

- data: ..b.....

Example trace of Purge MS message (3/3)

PURGE MS ARG : 67 (43h)

PurgeMS-Arg

- TBCD String : 222039900000012

SGSN-Number

- TBCD String : 3926990000100

Example trace of Purge MS Ack message (1/3) MSU

- BSN: 58 (3Ah) BIB: 1 FSN: 58 (3Ah) FIB: 1

- SCCP

UDT - UNIT DATA

SCCP DPC: 1856 (0740h)

SCCP OPC: 2400 (0960h)

SCCP SLS: 13 (0Dh)

Protocol Class

- length 12 (0Ch)

- length 11 (0Bh)

- subsystem is HLR

SCCP User Data

- length 68 (44h)

Example trace of Purge MS Ack message (2/3) SUBSYSTEM 6 : HLR

DestTransactionID: ....

DialoguePortion

External

Single-ASN.1-type

DialogueResponse

Result

- Accepted (0)

Result-Source-Diagnostic

Dialogue-Service-User

- Null (0)

ComponentPortion

ReturnResultLast

InvokedID: .

Sequence

LocalOperationCode: C

Parameter: 48 (30h) Length: 2 (02h)

- length: 2 (02h)

- length: 0 (00h)

Example trace of Purge MS Ack message (3/3)

PURGE MS RES : 67 (43h)

PurgeMS-Res

freezeP-TMSI

Only if the SGSN nbr received matches with the SGSN nbr stored in HLR

Cancel Location Procedure (1/3) MSU

- BSN: 58 (3Ah) BIB: 1 FSN: 59 (3Bh) FIB: 1

- SCCP

UDT - UNIT DATA

SCCP DPC: 1856 (0740h)

SCCP OPC: 2400 (0960h)

SCCP SLS: 14 (0Eh)

Protocol Class

- length 12 (0Ch)

- length 11 (0Bh)

- subsystem is HLR

SCCP User Data

- length 65 (41h)

Cancel Location Procedure (2/3)

SUBSYSTEM 6 : HLR

OrigTransactionID: 1F 40 10 00

DialoguePortion

External

Single-ASN.1-type

DialogueRequest

ComponentPortion

Invoke

InvokedID: 00

LocalOperationCode: 03

Parameter: 163 (A3h) Length: 13 (0Dh)

- length: 13 (0Dh)

- length: 8 (08h)

- data: 22 02 93 09 00 00 10 F2

Tag: Universal, Primitive, value: 0Ah

- length: 1 (01h)

- data: 01

Cancel Location Procedure (3/3)

CANCEL LOCATION ARG : 3 (03h)

CancelLocationArg

- TBCD String : 262099300000036

cancellationType

- subscriptionWithdraw (01h)

04a gr interface.pdf

h length

h length

h data

h exam

h sccp sls

h sccp opc

h translation type

sccp user data length

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