7.9 Ims initiated and controlled pss and mbms User Service (ims_pss_mbms_us) uid_34046

Resources: S4,S3,IETF

References

Document	Title/Contents
WID(s)
SP-080201	WID on IMS initiated and controlled PSS and MBMS User Service
Impacted Specifications
TS 26.234	Transparent end-to-end Packet-switched Streaming Service (PSS); Protocols and codecs - S4
TS 26.346	Multimedia Broadcast/Multicast Service (MBMS); Protocols and codecs - S4
TS 33.246	3G Security; Security of Multimedia Broadcast/Multicast Service (MBMS) - S3
New Dedicated Specifications/Reports
TS 26.237	IMS based PSS and MBMS User Service; Protocols - S4

Supporting Individual Members: Ericsson, RealNetworks, Apple Inc, Huawei, Orange, Telecom Italia, China Mobile, Verizon Wireless.

UID	Name	Resource	Hyperlink	Notes	TS_TR
34046	IMS initiated and controlled PSS and MBMS User Service	S2,S4,C3,C4	SP-080201	SP#39 WID approved	-
34146	IMS initiated and controlled PSS and MBMS User Service	S2,S4,C3,C4	SP-080201	SP#43 completed	26.237, 26.234, 26.346, 33.246
521022	(IETF) IMS initiated and controlled PSS and MBMS User Service	S4-IETF	SP-080201	SP#53/IETF#81: RFC 6080 included in 26.237	draft-ietf-sipping-config-framework

This work is linked to SA4 Extending PSS and MBMS User Services for optimized Mobile TV (PSS_MBMS_OMTV) UID_34043.

IMS facilitates multimedia service creation and deployment. It allows operators to apply policy controls over the traffic, control QoS and charging with a single management infrastructure. It allows the use of a common PS infrastructure. Today the IMS is mainly deployed for Voice and Multimedia Telephony applications with the support of enablers like presence and group management.

Multimedia services based on PSS and MBMS use protocols like RTSP, FLUTE and HTTP. This limits the possibilities of service blending and cost optimizations on the infrastructure. It would be beneficial to allow for PSS and MBMS User Services to be initiated and controlled via SIP.

Also, as customers use already-deployed PSS services, the ARPU can be increased by bundling these services into IMS applications that would bring all the features of IMS stated above (QoS, charging etc.). It should be possible to re-use the full functionality of PSS or MBMS as it stands today.

For these reasons 3GPP specified IMS initiated and controlled PSS and MBMS User Service. The same reasons have been guiding the specifications on IPTV in TISPAN, ATIS IIF (IPTV Interoperability Forum) and Open IPTV Forum.

The objective is to provide convergence and avoid inconsistencies with IMS-based IPTV solution provided in TISPAN, ATIS IIF and Open IPTV Forum, by aligning architecture and procedures defined in their specifications and adaptation towards 3GPP PSS and MBMS User Service. The specification work has been done in the following order:

1. Unicast streaming over PSS: e.g. Mobile TV using PSS, streaming radio services

2. MBMS streaming: e.g. Mobile TV using MBMS

3. Other Multimedia streaming/download services

SA4 does not foresee any impact on IMS core itself. This work enables the use of IMS charging in the context of PSS and MBMS User Service. It has no impact on charging specifications. The service allows:

• Blending of PSS and MBMS User Services with IMS communication services;

• A unique registration and profile management for all multimedia services.

This work specified:

• how to use the SIP protocol to initiate and control PSS and MBMS User Services

• how to use the core IMS functions and enablers in order to utilize mechanisms such as QoS and Policy control to improve the service experience