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Content for TR 23.824 Word version: 10.0.0

0… 5…

5 Architecture model and reference points p. 10

5.1 Reference architecture p. 10

5.2 Reference points p. 10

5.2.1 General p. 10

5.2.2 C interface p. 10

5.2.3 Interface between the IP-SM-GW and the HLR/HSS p. 11

5.2.4 E/Gd interface p. 11

5.2.5 ISC interface p. 11

5.2.6 Void

5.3 Functional entities p. 11

5.3.1 IP-Short-Message-Gateway (IP-SM-GW) p. 11

5.3.1.1 General p. 11

5.3.1.2 Transport-level interworking p. 11

5.3.1.3 Service-level interworking p. 11

5.3.2 HSS p. 12

6 Procedures p. 12

6.0 General p. 12

6.1 Registration procedure p. 12

6.2 De-registration procedure p. 12

6.2.1 UE initiated p. 12

6.2.2 Network initiated p. 12

6.3 Transport-level interworking: Successful encapsulated Short Message origination procedure p. 12

6.4 Transport-level interworking: Successful encapsulated Short Message termination procedure p. 12

6.5 Transport-level interworking: Delivery Report procedure p. 12

6.5a Unsuccessful SM termination procedure p. 12

6.5b Alert Service Centre procedure when UE is available p. 13

6.6 Transport-level interworking: Alert service centre procedure when memory capacity is available p. 13

6.7 Service-level Interworking: IM or CPM capable UE sends an Instant Message to an SMS user p. 13

6.8 Interaction between transport-level and service-level Interworking p. 14

6.8.1 General p. 14

6.8.2 IMS Originating p. 15

6.8.3 IMS Terminating p. 16

6.9 Service-level Interworking: Concatenated Short Messages delivered as a large Instant Message p. 17

6.10 Service-level interworking: Status Report procedure for Instant Message to Short Message interworking p. 17

6.11 IM or CPM user sends an Instant Message to an SMSIP UE p. 17

6.12 Delivery report for an Instant Message delivered as encapsulated Short Message p. 19

6.13 Service-level interworking: IM or CPM capable UE sends an Instant Message to an SMS user with Interworking in the terminating side p. 19

6.14 Service-level interworking: IM or CPM user receives Short Message from an SMS user p. 21

6.15 Service-level Interworking: CPM capable UE sends a Chat session invitation to an SMS user p. 21

6.15.1 IP-SM-GW in the originating network p. 22

6.15.2 IP-SM-GW in the terminating network p. 23

6.16 Service-level Interworking: CPM capable UE tearing down a Chat session between a CPM user and an SMS user p. 25

6.16.1 IP-SM-GW in the originating network p. 26

6.16.2 IP-SM-GW in the terminating network p. 26

6.17 Service-level Interworking: SMS user requesting the IP-SM-GW to tear down the Chat session between a CPM user and an SMS user p. 27

6.17.1 IP-SM-GW in the originating network p. 28

6.17.2 IP-SM-GW in the terminating network p. 28

6.18 Service-level interworking: Status Report procedure for chat session message to Short Message interworking p. 30

A Service-level interworking: IM or CPM user sends an Instant Message to a group list including SMS users p. 32

B Group chat sessions p. 34

B.1 Service-level interworking: IM or CPM user initiates a group chat and sends an Instant Message to a group list including SMS users p. 34

B.2 Service-level interworking: CPM user extends a one-to-one chat session into a group chat session p. 37

B.3 Service-level interworking: IP-SM-GW informs SMS users about group chat participant changes p. 38

Y Checklist of service requirements for CPM - SMS interworking p. 39

$ Change history p. 41