%0 Journal Article
%T Unequal QoS Control Mechanism Based on RTP and MPEG-4 Scalable Coding<br>基于RTP协议和MPEG－4可扩展编码的非均匀QoS控制机制
%A 史轶
%A 林守勋
%J 计算机科学
%D 2002
%I 
%X Since the significance of each layer in scalable coding is different, making use of this characteristic can rea-sonably use such resources as bandwidth, processing and caching by deploying varied QoS control strategies for differ-ent layers. This paper presents an idea of unequal QoS control and the implementation mechanism at two ends oftransmission based on RTP and MPEG-4 scalable coding, redefines the sequence number field of RTP header and ex-tends the RTP header. These can not only realize unequal bandwidth pre-allocation and unequal error protection, butalso rapidly and precisely estimate the delay jitter and packet loss ratio.
%K QoS control
%K RTP
%K Scalable coding<br>RTP协议
%K MPEG－4
%K 可扩展编码
%K 非均匀控制机制
%K QoS
%K 服务质量
%K 计算机网络
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=64A12D73428C8B8DBFB978D04DFEB3C1&aid=C7D8BCC14BB52607&yid=C3ACC247184A22C1&vid=771469D9D58C34FF&iid=59906B3B2830C2C5&sid=987EDA49D8A7A635&eid=286FB2D22CF8D013&journal_id=1002-137X&journal_name=计算机科学&referenced_num=0&reference_num=7