发明授权
US08806551B2 Prioritized retransmission of internet protocol television (IPTV) packets
有权
互联网协议电视(IPTV)数据包的优先重传
- 专利标题: Prioritized retransmission of internet protocol television (IPTV) packets
- 专利标题(中): 互联网协议电视(IPTV)数据包的优先重传
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申请号: US12327400申请日: 2008-12-03
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公开(公告)号: US08806551B2公开(公告)日: 2014-08-12
- 发明人: Raziel Haimi-Cohen
- 申请人: Raziel Haimi-Cohen
- 申请人地址: FR Boulogne Billancourt
- 专利权人: Alcatel Lucent
- 当前专利权人: Alcatel Lucent
- 当前专利权人地址: FR Boulogne Billancourt
- 代理机构: Wall & Tong, LLP
- 主分类号: H04N7/173
- IPC分类号: H04N7/173 ; H04L1/18
摘要:
A method and system for improved error resiliency in Internet protocol Television (IPTV) are provided. Received media stream is encoded in a real-time protocol. The RTP media stream is then reordered in a homogeneous arrangement (e.g., video packets together, audio packets together) such that each RTP packet, which contains video contains data from a single video frame. Furthermore, each RTP packet contains a RTP header extension, which specifies the priority of the data. Audio frame and intra-coded frames (I-frames) are marked as highest priority frames, predictably coded frames (P-frames) are marked as high priority frames, bidirectionally coded frames (B-frames) are marked as lower priority frames with anything else occupying the lowest priority. The media stream is forwarded to the plurality of users, in accordance with the priority of each packet. A subscriber's device requests retransmission of any missing packets.
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