发明名称 |
METHOD AND APPARATUS FOR SYNCHRONIZING MOBILE STATION MEDIA FLOWS DURING A COLLABORATIVE SESSION |
摘要 |
A method and apparatus are described for synchronizing mobile station (i.e., wireless transmit/receive unit (WTRU)) media flows during a collaboration session. Inter-WTRU transfer request messages, flow addition request messages and session update request messages may be exchanged between a plurality of WTRUs and a session continuity control application server (SCC-AS). Each of the messages may include a session description protocol (SDP) attribute line containing time synchronization information (e.g., a presentation time offset (PTO) information element (IE), a media flow group identity (ID) and a synchronization tolerance IE). The SCC-AS may update the time synchronization information and include the updated information in messages it sends to the WTRUs, which may re-synchronize their respective media flows based on the updated time synchronization information. |
申请公布号 |
EP2673934(A1) |
申请公布日期 |
2013.12.18 |
申请号 |
EP20120705555 |
申请日期 |
2012.02.09 |
申请人 |
INTERDIGITAL PATENT HOLDINGS, INC. |
发明人 |
DE FOY, XAVIER;PATEL, MILAN;SHAHEEN, KAMEL M.;PURKAYASTHA, DEBASHISH;LOTFALLAH, OSAMA;LIU, HANG |
分类号 |
H04L29/06 |
主分类号 |
H04L29/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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