Invention Grant
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
- Patent Title: Prioritized retransmission of internet protocol television (IPTV) packets
- Patent Title (中): 互联网协议电视(IPTV)数据包的优先重传
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Application No.: US12327400Application Date: 2008-12-03
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Publication No.: US08806551B2Publication Date: 2014-08-12
- Inventor: Raziel Haimi-Cohen
- Applicant: Raziel Haimi-Cohen
- Applicant Address: FR Boulogne Billancourt
- Assignee: Alcatel Lucent
- Current Assignee: Alcatel Lucent
- Current Assignee Address: FR Boulogne Billancourt
- Agency: Wall & Tong, LLP
- Main IPC: H04N7/173
- IPC: H04N7/173 ; H04L1/18

Abstract:
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.
Public/Granted literature
- US20100138885A1 Prioritized Retransmission of Internet Protocol Television (IPTV) Packets Public/Granted day:2010-06-03
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