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    • 1. 发明申请
    • PLACEMENT OF SERVERS IN AN IP TELEVISION NETWORK
    • 服务器在IP电视网络中的布置
    • WO2007058886A3
    • 2009-04-23
    • PCT/US2006043639
    • 2006-11-09
    • SBC KNOWLEDGE VENTURES G PBELLFORD RUSSELL BLI ZHIOU CANHUISAVOOR RAGHVENDRA G
    • BELLFORD RUSSELL BLI ZHIOU CANHUISAVOOR RAGHVENDRA G
    • H04N7/173
    • H04L12/1854H04H20/78H04L43/00H04L43/0852H04L43/16H04N21/64738
    • According to one example embodiment the placement of video distribution servers and acquisition servers in a live television IPTV network is considered to be a separate process This process may be based, for example, on historical data, number of subscribers, subscribers service quality, some video distribution servers may be selectively placed closer to the subscribers, i e, at some central offices or intermediate offices, instead of at the video hub office These local video distribution servers (those video distribution servers not located at video hub office) may selectively receive popular TV channel streams just like regular video subscribers based on the multicasting protocol from the acquisition server Whenever a subscriber wants to switch to a channel (or recover packet loss for an on¬ going channel), if the channel is on the popular channel list, the service may be accomplished by the local video distribution servers.
    • 根据一个示例性实施例,视频分配服务器和采集服务器在实况电视IPTV网络中的布置被认为是单独的过程。该过程可以基于例如历史数据,订户数量,订户服务质量,一些视频 分配服务器可以被选择性地放置在更靠近订户的位置,即在一些中心局或中间局而不是在视频中心局。这些本地视频分发服务器(那些不在视频中心局的视频分配服务器)可以选择性地接收流行的电视 基于来自采集服务器的多播协议的常规视频订户的通道流每当用户想切换到信道(或恢复正在进行的信道的分组丢失)时,如果该频道在流行频道列表上,则服务 可以由本地视频分发服务器完成。