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TR 23.867
IMS Emergency Sessions

3GPP‑Page   ToC↓  
V7.1.0 (Wzip)  2005/12  81 p.
Rapporteur:
Mr. Liebhart, Rainer
Nokia Networks

full Table of Contents for  TR 23.867  Word version:  7.1.0

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1  Scope  p. 6

The present document is a temporary container for the architectural impacts on IM CN subsystem and on IP-Connectivity Access Network for establishing an emergency session via IM CN subsystem. The contents of this report when stable will be moved into 3GPP Technical Specification e.g. TS 23.002, TS 23.060 and TS 23.228.

2  References  p. 6

3  Definitions, symbols and abbreviations  p. 6

3.1  Definitions  p. 6

3.2  Abbreviations  p. 6

4  Overall architecture for IP based Emergency services  p. 7

4.1  Architecture principles  p. 7

4.1.1  Requirements for IMS Emergency Sessions  p. 7

4.1.2  Procedures for SIP Emergency Session Establishment  p. 8

4.1.3  Procedures for IMS Emergency Session Establishment  p. 8

4.2  Architectural considerations  p. 8

4.2.1  Emergency Calls in absence of UICC  p. 8

4.2.1.1  Emergency Calls in absence of UICC - simulated IMSI  p. 9

4.2.1.2  Emergency Calls in absence of UICC - use of IMEI  p. 9

4.3  Security considerations  p. 10

4.4  General Packet Radio Service considerations  p. 10

4.5  Radio network considerations  p. 10

4.6  Emergency location information and LCS functions  p. 11

4.6.1  Handling of emergency location information in GPRS  p. 11

4.6.2  Emergency location information for I-WLAN and fixed broadband access  p. 12

4.7  High Level Procedures for IMS Emergency Services  p. 13

4.7.1  UE Detectable Emergency Session  p. 13

4.7.2  Non UE detectable Emergency Session  p. 15

5  Impacts on the UE and on the IM CN subsystem  p. 15

5.1  UE  p. 15

5.2  IMS Functional entities  p. 16

5.2.1  Proxy-CSCF  p. 16

5.2.2  Serving-CSCF  p. 16

5.3  Procedures for IP multi-media sessions  p. 17

5.3.1  Emergency session establishment  p. 17

5.3.1.1  PSAP/Emergency center connected via IP using SIP  p. 17

5.3.1.2  PSAP/Emergency center located at the GSTN  p. 19

6  Impacts on IP-Connectivity Access Network  p. 21

6.1  General  p. 21

6.2  General Packet Radio Service (GPRS) for UICC case  p. 22

6.2.1  GPRS Attach Function  p. 22

6.2.2  GPRS Detach Function  p. 26

6.2.3  Location Management Function  p. 26

6.2.3.1  Routeing Area Update Procedure  p. 26

6.2.3.1.1  Intra SGSN Routeing Area Update  p. 26
6.2.3.1.2  Inter SGSN Routeing Area Update  p. 27

6.2.3.2  Combined RA/LA Update Procedure  p. 30

6.2.3.2.1  Combined Intra SGSN RA/LA Update  p. 30
6.2.3.2.2  Combined Inter SGSN RA/LA Update  p. 32

6.2.4  Location Management Procedures (Iu-mode)  p. 36

6.2.4.1  Routeing Area Update Procedure  p. 36

6.2.4.2  Serving RNS Relocation Procedures  p. 41

6.2.4.2.1  Serving RNS Relocation Procedure  p. 41
6.2.4.2.2  Combined Hard Handover and SRNS Relocation Procedure  p. 45
6.2.4.2.3  Combined Cell/URA Update and SRNS Relocation Procedure  p. 49

6.2.5  Service Request Procedure (Iu mode)  p. 53

6.2.5.1  MS Initiated Service Request Procedure  p. 53

6.2.6  Intersystem Change  p. 55

6.2.6.1  Iu mode to A/Gb mode Inter-SGSN Change  p. 55

6.2.6.2  A/Gb mode to Iu mode Inter-SGSN Change  p. 60

6.2.7  Session Management Functionality  p. 64

6.2.7.1  PDP Context Activation  p. 65

6.2.7.1.1  PDP Context Activation Procedure  p. 65
6.2.7.1.2  Secondary PDP Context Activation Procedure  p. 68

6.2.7.2  PDP Context Modification  p. 70

6.2.7.3  PDP Context Deactivation  p. 70

6.2.7.4  Preservation Functions  p. 70

6.2.8  Information Storage  p. 70

6.2.8.1  SGSN  p. 70

6.2.8.2  GGSN  p. 73

6.2.8.3  MS  p. 74

6.3  General Packet Radio Service (GPRS) for UICC-less case  p. 75

6.3.1  GPRS Attach Function and PDP Context Activation Procedure  p. 75

6.3.2  GPRS Detach Function  p. 78

6.3.3  Location Management Function  p. 78

A  Retrieval of Location Information for Emergency Services over Fixed Broadband Access  p. 79

A.1  High Level Flows for the retrieval of location information for emergency services over fixed broadband access  p. 79

A.1.1  The UE acquires the location information  p. 79

A.1.2  The IMS core request the location information  p. 80

$  Change history  p. 81

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