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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.
The construction of application layer multicast network model in mobile environment is the research hotspot of multicast model construction in non-mobile environment, and the key problem to be solved is to shorten the delay of multicast reception and multicast and the structural adjustment strategy of multicast tree network model. Based on the traditional multicast tree, this strategy detects the node parameters periodically and exchanges parent-child nodes under the premise of minimizing the disconnection of data transmission, And strive to get a better multicast tree topology and performance.Experimental data show that the fast parent-child switching strategy with high continuity has good performance in mobile environment. When multicast forwarding delay and multicast tree model average out Have a greater superiority.