Support of Short Message Service (SMS) over generic 3GPP Internet Protocol (IP) access; Stage 2
The present document specifies the new capabilities and enhancements needed to support SMS over a generic IP Connectivity Access Network (IP-CAN) using IMS capabilities (TS 23.228 [9]). These include (but are not limited) to:
1 Enhancements to the HSS;
2 Communication between the SMS-GMSC/SMS-IWMSC and the HSS;
3 Authentication of service usage and registration;
4 Transfer of UE Terminated SMS, UE Originated SMS, and Delivery reports;
5 Mechanisms to handle SMS when there is more than one IP connection active with the UE, etc.
6 Mechanisms to handle MT-SMS without MSISDN to IMS UE, and SMS between IMS UEs that support MSISDN-less SMS operation.
The document also specifies the capabilities and enhancements needed to support the service level interworking for the Short Message service as defined in the TS 23.040 [2] and in this specification and the Instant Messaging service as defined in OMA-TS-SIMPLE_IM-V1_0 [12]. The features supported from the IM specification are limited to the exchange of short or large immediate messages in pager mode.
NOTE: The page-mode immediate message as defined in TS 24.247[14] is considered as a subset of OMA-TS-SIMPLE-IM-V1_0 [12].
The document also specifies the capabilities and enhancements needed to support service level interworking for the Short Message service, as defined in the TS 23.040 [2] and in this specification and the OMA CPM service as defined in OMA-TS-CPM_Conv_Fnct-V1_0 [17]. The features supported from the CPM specification are the exchange of short or large immediate messages in pager mode, as well as session-based messaging.
The service requirements are described in TS 22.340 [18].