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Content for TR 23.869 Word version: 9.0.0

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5 Overall Functionality to Support IMS Emergency Calls p. 9

5.1 IMS Functionality p. 9

5.1.1 Release 7 functionality to be considered for Release 9 p. 9

5.1.2 Release 9 Functionality p. 10

5.2 GPRS Functionality p. 10

5.2.1 UTRAN Functionality overview p. 10

5.2.2 UTRAN Normal Service Mode Functionality p. 10

5.2.2.1 Release 7 functionality to be considered for Release 9 p. 10

5.2.2.1.1 General emergency services support descriptions: p. 10

5.2.2.1.2 Emergency APN: p. 10

5.2.2.1.3 QoS Negotiation p. 11

5.2.2.1.4 PCC enhancement to support IMS emergency calls: p. 11

5.2.2.1.5 Network support indication p. 12

5.2.2.2 Key Issue 1: PCC rule for Allocation and Retention Priority p. 12

5.2.2.2.1 Description p. 12

5.2.2.2.2 Solution p. 12

5.2.3 UTRAN Limited Service Mode Functionality p. 12

5.2.3.1 Re-Introduction of Release 7 Functionality p. 12

5.2.3.2 Key Issue 1: Limited Mode UE Attaching to a GPRS network (UE with UICC) p. 12

5.2.3.2.1 Description p. 12

5.2.3.2.2 Solution p. 12

5.2.3.3 Key Issue 2: Network Support of Emergency Services p. 13

5.2.3.3.1 Description p. 13

5.2.3.3.2 Solution p. 13

5.2.3.4 Key Issue 3: Limited Mode UE Attaching to a GPRS network (UICCless UE) p. 13

5.2.3.4.1 Description p. 13

5.2.3.4.2 Solution p. 13

5.2.4 GERAN Normal Service Mode Functionality p. 13

5.2.4.1 Key Issue 1: Emergency Calls over GERAN p. 13

5.2.4.1.1 Description p. 13

5.2.4.1.2 Solution p. 13

5.2.5 GERAN Limited Service Mode Functionality p. 13

5.3 EPS Functionality p. 14

5.3.1 EPS Functionality overview p. 14

5.3.2 E-UTRAN Normal Service Mode Functionality p. 14

5.3.2.1 Key Issue 1: Attach: shall it be a normal attach or an emergency attach? p. 14

5.3.2.1.1 Description p. 14

5.3.2.1.2 Solution p. 14

5.3.2.2 Key Issue 2: p. 14

5.3.2.2.1 Description p. 14

5.3.2.2.2 Solution p. 14

5.3.3 E-UTRAN Limited Service Mode Functionality p. 14

5.3.3.1 Key Issue 1: Attach in limited service state p. 15

5.3.3.1.1 Description p. 15

5.3.3.1.2 Solution p. 15

5.3.3.2 Key Issue 2: Mobility management during an emergency call p. 15

5.3.3.2.1 Description p. 15

5.3.3.2.2 Solution - special handling of TA updates for emergency services p. 15

5.3.3.2.3 Solution - special handling of Handover for emergency services p. 15

5.3.3.3 Key Issue 3: Additional PDN Connection during Limited Service Mode p. 15

5.3.3.3.1 Description p. 15

5.3.3.3.2 Solution - Restricting Additional PDN connection after Emergency Attach p. 16

5.3.3.4 Key Issue 4: When to Detach after an emergency call p. 16

5.3.3.4.1 Description p. 16

5.3.3.4.2 Solution - Detach of UEs in limited service mode p. 16

5.3.4 QOS handling for emergency calls p. 16

5.3.4.1 Description p. 16

5.3.4.2 Emergency Call without an Emergency APN p. 16

5.3.4.3 Emergency Call with an Emergency APN p. 16

5.3.5 Load re-balancing between MMEs p. 17

5.3.5.1 Key Issue 1: Releasing connected UEs p. 17

5.3.5.1.1 Description p. 17

5.3.5.1.2 Solution p. 17

5.4 EPS Emergency Location Functionality p. 17

5.5 EPS functionality for handovers between 3GPP and HRPD access p. 17

5.5.0 General p. 17

5.5.1 Key Issue 1: Availability of APN and PDN GW address in limited service mode for network based handovers p. 18

5.5.1.1 Description p. 18

5.5.1.2 Solution p. 18

5.5.2 Key Issue 2: Identification of an emergency call at attach for HRPD access p. 18

5.5.2.1 Description p. 18

5.5.2.2 Solution p. 18

5.5.3 Key Issue 3: Emergency call handover from HRPD access to E-UTRAN in limited service mode p. 18

5.5.3.1 Description p. 18

5.5.3.2 Solution p. 18

5.6 EPS functionality for HRPD access p. 18

5.6.1 Overview of EPS functionality p. 18

A Release 7 CRs for GPRS Emergency Services p. 20

B IMS Emergency Calls over UTRAN and E-UTRAN p. 22

B.1 IMS Emergency Calls over UTRAN p. 22

B.1.1 UTRAN Use Cases p. 22

B.1.1.1 Normal Mode - Initial Call p. 22

B.1.1.2 Normal Mode - Handover p. 23

B.1.2 GPRS Non-Emergency Procedures to Support Emergency Sessions p. 23

B.1.2.1 Network Indicator p. 23

B.2 IMS Emergency Calls over E-UTRAN p. 24

B.2.1 E-UTRAN Use Cases p. 24

B.2.1.1 Normal Mode - Initial Call p. 24

B.2.1.2 Normal Mode - Handover p. 25

B.2.2 EPS Non-Emergency Procedures to Support Emergency Sessions p. 25

B.2.2.1 Network Indicator p. 25

C Local regulation for emergency call p. 26

C.1 GPRS/EPS enhancements to support Limited Service Mode UEs p. 27

D TS 23.401 Release 9 Changes p. 29

E TS 23.060 Release 9 Changes p. 35

$ Change history p. 36