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1. 发明申请

WO2007142573A8 MULTICAST DELIVERY 审中-公开
标题翻译：多媒体传送
公开(公告)号：WO2007142573A8
公开(公告)日：2009-01-15
申请号：PCT/SE2007000534
申请日：2007-06-01
申请人： ERICSSON TELEFON AB L M , CEDERVALL MATS , DEKKER RENE , HALEN JOACIM , MAS IVARS IGNACIO , PERSSON FREDRIK F
发明人： CEDERVALL MATS , DEKKER RENE , HALEN JOACIM , MAS IVARS IGNACIO , PERSSON FREDRIK F
IPC分类号： H04L29/06 , H04N7/173
CPC分类号： H04L67/06 , H04L12/18 , H04L67/28 , H04L67/2842 , H04L67/325 , H04N21/26616 , H04N21/2665 , H04N21/2668 , H04N21/6125 , H04N21/6405 , H04N21/6408
摘要： A method and nodes in a communication network (305) for controlling multi-cast delivery of files, wherein the multi-cast delivery is adapted to reduce the amount of required uni-cast file deliveries in the communication network. A browser of an IPTV Terminating Function (ITF; 310a, b, c), requiring a file interrogates a cache (316) of the IFT for the file content before a uni-cast request for file delivery is sent to an Application Service Platform (ASP;300).. The files stored in the cache have been previously delivered to the IFT via the proposed multi-cast mechanism. If the file content is not stored in the cache, a uni-cast request is sent to the ASP. Each uni-cast request is also forwarded to a Multi-Cast Controller (MCC;320), which determines whether the requested file should be sent also to a plurality of additional IFTs on a multi-cast channel. At each IFT, listening to the multi-cast channel, the received content can be handled selectively -according to a filtering mechanism, and a received file may, e.g. be stored in the cache for later retrieval.
摘要翻译：用于控制文件的多播传送的通信网络（305）中的方法和节点，其中所述多播传送适于减少所述通信网络中所需的单播文件传送量。 IPTV终端功能（ITF; 310a，b，c）的浏览器要求文件在文件传送的单播请求发送到应用服务平台之前询问文件内容的IFT的高速缓存（316） ASP; 300）。存储在缓存中的文件以前已经通过提出的多播机制传送到IFT。如果文件内容未存储在缓存中，则会将单播请求发送到ASP。每个单播请求也被转发给多播控制器（MCC; 320），多控制控制器（MCC; 320）确定所请求的文件是否也应发送到多播信道上的多个附加IFT。在每个IFT处，监听多播信道，可以根据过滤机制选择性地处理所接收的内容，并且所接收的文件可以例如被接收。存储在缓存中以供以后检索。

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