%0 Journal Article
%T Design and Implementation:An Algorithm Supporting VCR Functions by Extended Steam Merging<br>支持VCR功能的扩展流合并算法VCRSM的设计与实现
%A SHAN Wei
%A YE Bao-Liu
%A DAI Han
%A LU Sang-Lu
%A CHEN Dao-Xu
%A <br>单炜
%A 叶保留
%A 戴菡
%A 陆桑璐
%A 陈道蓄
%J 计算机科学
%D 2005
%I 
%X As an effective means of VOD service,multicast has been researched for about ten years. Many algorithms of it have been matured. But there are only a few papers about multicast schedule supporting VCR functions. The rea- son is that supporting VCR functions will increase the complexity of schedule of the server,and will decrease its capa- bility. In this paper,we present a rnulticast scheduling algorithm VCRSM provding VCR functions by extended stream merging. Active buffer management on client is used to partly satisfy the VCR actions of users. On server,original stream merging is modified to adapt to all VCR requests. We also put forward delay request to optimize the server's performence. When compared with other systems in simulation,VCRSM can satisfy all kinds of VCR functions with no delay,while occupying no more bandwidth than others.
%K Multicast
%K VCR actions
%K Active buffer management
%K Extended stream merging<br>VCR功能
%K 扩展流合并算法
%K VCRSM算法
%K 客户端主动缓存
%K 多播传输
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=64A12D73428C8B8DBFB978D04DFEB3C1&aid=6C72ABBC7CC4786E&yid=2DD7160C83D0ACED&vid=9971A5E270697F23&iid=38B194292C032A66&sid=7E8E8B150580E4AB&eid=BB0EA31DB1B01173&journal_id=1002-137X&journal_name=计算机科学&referenced_num=0&reference_num=17