计算机与现代化 ›› 2010, Vol. 1 ›› Issue (3): 33-6.doi: 10.3969/j.issn.1006-2475.2010.03.010

• 网络与通信 • 上一篇    下一篇

基于移动多媒体CTMM的研究

纪红英1,巩存群1,崔琳2   

  1. 1.中国海洋大学信息科学与工程学院,山东 青岛266100;2.青岛理工大学计算机系,山东 青岛 266034
  • 收稿日期:2009-11-04 修回日期:1900-01-01 出版日期:2010-03-20 发布日期:2010-03-20

Research on CTMM Based on Mobile Multimedia

JI Hong-ying1 ,GONG Cun-qun1 ,CUI Lin2

  

  1. 1.College of Information Science and Engineering, Ocean University of China, Qingdao 266100, China;2.Department of Computer, Qingdao Technological University, Qingdao 266034, China
  • Received:2009-11-04 Revised:1900-01-01 Online:2010-03-20 Published:2010-03-20

摘要:

移动多媒体用户数量的增加使得网络瓶颈现象日益严重,以及多媒体源服务器和代理服务器的负载较大,这严重地影响了移动多媒体的QoS (Quality of Service)。为了提高移动多媒体网络传输带宽,减小多媒体源服务器和代理服务器的负载,提高多媒体请求数据的命中率,减小请求响应延迟时间,在传统的移动多媒体系统两层架构模型的基础上,本文提出基于簇的三层中间件架构移动多媒体传输模型CTMM (Clusterbased Threetier Middleware Model)。研究CTMM提出的三层架构,介绍第二层架构的核心部分localmediator的模块设计及主要模块采用的关键技术。仿真实验说明该模型的有效性。

关键词: 移动多媒体, 资源查找, 超级节点,

Abstract:

Considering server problem for MM (Mobile Multimedia) systems, such as the bandwidthconstrained, the burden of server and proxy, which is affected by client persistent increasing. In order to improve the network transmission bandwidth of mobile multimedia, reduce the load of multimedia source server and proxy server, and improve the hit rate of multimedia requested data, reduce response time, this paper proposes CTMM (Clusterbased Threetier Middleware Model) architecture, based on traditional mobile multimedia twotier structure model. Firstly, it elects the local mobile nodes with excellent performance. Secondly, it organizes and manages these nodes to form clusters. Then it uses cluster supernode selection strategy to select appropriate local nodes to provide resource for servicerequestors. Simulation results demonstrate validity of CTMM.

Key words: mobile multimedia, resource discovery, supernode, cluster