区分服务中分层视频组播报文测量和转发算法  

A Packet Metering and Forwarding Algorithm to Support Layered Video Multicast in Differentiated Services Networks

作　　者：张明杰[1] 朱培栋[1] 卢锡城[1] 

机构地区：[1]国防科学技术大学计算机学院,湖南长沙410073

出　　处：《软件学报》2004年第3期414-420,共7页Journal of Software

基　　金：国家自然科学基金~~

摘　　要：区分服务是一种可扩展的服务质量支撑框架,视频组播是对服务质量有较高要求的应用.为了满足端系统的异构性要求,对视频进行分层传输是比较好的方法.研究了使用区服务中的确保服务进行分层视频组播传输的方法,提出了LVMM(layeredvideomulticastmeter)测量算法和LVMF(layeredvideomulticastforwarder)转发算法.该方法只需要一个组播地址,其有效性通过ns-2模拟器进行了验证.Differentiated services (DiffServ) is a scalable architecture for supporting quality of services (QoS), and video multicast is the application which needs network to support QoS guarantee. To accommodate to heterogeneous network and host, it is a good idea to transmit video in a few layers. The paper proposes LVMM (layered video multicast meter) and LVMF (layered video multicast forwarder) algorithms for distribution of the layered video multicast in DiffServ networks. The method needs only one multicast address and its validity is verified using ns-2 simulator.

关 键 词：服务质量 区分服务 分层视频组播 异构性 报文测量 报文转发 网络 LVMM LVMF 

分 类 号：TP393[自动化与计算机技术—计算机应用技术] TN915.0[自动化与计算机技术—计算机科学与技术]