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3GPP2 SX20-20140715-0xx TSG-SX WG2 -MMD Title: eDRVCC requirement and method Source: China Telecom Abstract: This contribution provides the requirement.

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Presentation on theme: "3GPP2 SX20-20140715-0xx TSG-SX WG2 -MMD Title: eDRVCC requirement and method Source: China Telecom Abstract: This contribution provides the requirement."— Presentation transcript:

1 3GPP2 SX20-20140715-0xx TSG-SX WG2 -MMD Title: eDRVCC requirement and method Source: China Telecom Abstract: This contribution provides the requirement for eDRVCC and some possible method to support the call transfer from PS to CS. Recommendation: Discussion and decision for eDRVCC WI. © 2014 3GPP2 The contributors grant a free, irrevocable license to 3GPP2 and its Organizational Partners to incorporate text or other copyrightable material contained in the contribution and any modifications thereof in the creation of 3GPP2 publications; to copyright and sell in Organizational Partner's name any Organizational Partner's standards publication even though it may include all or portions of this contribution; and at the Organizational Partner's sole discretion to permit others to reproduce in whole or in part such contribution or the resulting Organizational Partner's standards publication. The contributors are also willing to grant licenses under such contributor copyrights to third parties on reasonable, non-discriminatory terms and conditions for purpose of practicing an Organizational Partner's standard which incorporates this contribution. This document has been prepared by the contributors to assist the development of specifications by 3GPP2. It is proposed to the Committee as a basis for discussion and is not to be construed as a binding proposal on the contributors. The contributors specifically reserve the right to amend or modify the material contained herein and to any intellectual property of the contributors other than provided in the copyright statement above.

2 2 1.Overview of 3GPP2 VCC present specification 2.Service and network requirement for eDRVCC 3.possible method to support the call transfer from PS to CS in 3GPP2 network Outline

3 3 X.S0042-0 1.0 Initial Version, basic call transfer from PS(WLAN, HRPD) to 1x is specified. Supplementary services and call intermediate state is not addressed. X.S0042-A 1.0 DRVCC and SRVCC procedure are classfied. X.S0042-B 1.0 IMS Emergency Call for DRVCC is specified. X.P0042-C 1.0 IMS regular and Emergency Call for SRVCC will be specified. Overview of 3GPP2 VCC present specification

4 4 Service requirement  DRVCC Call transfer from PS to CS on call intermediate state  outgoing call in alerting state  incoming call in alerting state  DRVCC Call transfer from PS to CS for supplementary services which include more than one session  call waiting  call hold  3WC Network requirement  To support the above service, the MSC can not be enhanced/updated. Just like what is done in present X.S0042, MSC acts as a normal MSC during basic call transfer for DRVCC. Service and network requirement for eDRVCC

5 5 Call transfer from PS to CS on call alerting state  reference to 3GPP 23.237, outgoing call in alerting state for DRVCC  90 possible method to support the eDRVCC call transfer UE and SCC AS cooperate through Gm /Mw interface to finish the alerting call transfer from PS to CS. MSC acts as a normal MSC and move to the correct call state. At step 1, UE initiate transfer action which pass through Mw inferface to SCC AS

6 6  reference to 3GPP 23.237, incoming call in alerting state for DRVCC At step 6, UE init transfer request through Gm inferface to SCC AS

7 7 Call transfer from PS to CS for supplementary services  3GPP 23.237 should not be referenced, because in 23.237 MSC must be enhanced to support mid-call or ICS for transfering the rest sessions  Possible method for support more than one session transfer UE and SCC AS cooperate through Gm /Mw interface to transfer all the sessions(call legs) one by one. MSC acts as a normal MSC and move to the correct service state during entire sessions transfer. possible method to support the eDRVCC call transfer

8 8 UE initiate one session transfer, then SCC AS initiate another session transfer possible procedure for call transfer in call waiting state


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