发明授权
- 专利标题: Distributed gateway for reliable multicast wireless video
- 专利标题(中): 分布式网关,用于可靠的组播无线视频
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申请号: US12792871申请日: 2010-06-03
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公开(公告)号: US08374113B2公开(公告)日: 2013-02-12
- 发明人: Robert C. Meier , Neil R. Diener
- 申请人: Robert C. Meier , Neil R. Diener
- 申请人地址: US CA San Jose
- 专利权人: Cisco Technology, Inc.
- 当前专利权人: Cisco Technology, Inc.
- 当前专利权人地址: US CA San Jose
- 代理机构: Edell, Shapiro & Finnan, LLC
- 主分类号: H04W40/00
- IPC分类号: H04W40/00
摘要:
Techniques are provided to reduce or restrict the bandwidth consumed by multicast video streams on wireless links, such as wireless IEEE 802.11 links. At a central multicast video transcoder apparatus configured to communicate with one or more access point devices operating in a wireless local area network, one or more multicast video streams are re-encoded the one or more multicast video streams to produce a corresponding one or more wireless-friendly multicast video streams that have a reduced bandwidth from a bandwidth of the received multicast video streams. The one or more wireless-friendly multicast video streams are thus adapted for wireless transmission by access point devices to wireless client devices in the wireless local area network. The one or more access point devices receive the one or more wireless-friendly multicast video streams and process the one or more wireless-friendly multicast video streams depending on conditions in a radio channel used by the access point device. The access point devices then wirelessly transmit the one or more wireless-friendly multicast video streams to one or more client devices in a corresponding multicast group.
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