移动环境下应用层组播的高连续性父子节点交换策略  

Parent-child High-continuity Swap Strategy Based on Mobile ALM

作　　者：崔建群[1] 黄枫[1] 张文琳[1] 吴黎兵[2] 

机构地区：[1]华中师范大学计算机学院,武汉430079 [2]武汉大学计算机学院,武汉430072

出　　处：《小型微型计算机系统》2015年第10期2279-2283,共5页Journal of Chinese Computer Systems

基　　金：国家自然科学基金项目(61170017;61370108)资助

摘　　要：移动环境下的应用层组播网络模型构建是继非移动环境下组播模型构建的研究热点,缩短组播接收转发延迟和组播树网络模型结构调整策略是其中要解决的关键问题.提出一种基于小规模的移动环境下的高连续性父子节点交换策略.该策略基于传统构建的组播树,通过周期检测节点参数,在尽量减少断开数据传送连接的前提下,进行父子节点交换,力求获得更好的组播树拓扑和性能.仿真实验数据表明,高连续性的快速父子节点交换策略在移动环境下具有良好的性能,在组播接收转发延迟和组播树模型的平均出度上都有较大的优越性.Network model construction in mobile application layer multicast is a research hotspot following that in non-mobile environment of application layer multicast. Curtail reception and forwarding delay of multicast and structural readjustment strategy in multicast network model are key issues to solve. This paper proposes a Parent-Child High-Continuity Swap Strategy based on small-scale mobile application layer multicast. The strategy is based on the traditional multicast tree constructed, via detecting node parameters periodically,and reduces the disconnection of data transmission and connection as far as possible. In this context,the model swaps parent and child nodes, and strives to achieve better topology performance of multicast. A simulation experiment is given to indicate the proposal＇ s performance,and superiority on reception and forwarding delay of multicast and average outdegree of multicast network model.

关 键 词：移动环境 应用层组播 高连续性 交换策略 终端延迟 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]