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基于CTP协议的路由算法优化设计 被引量:3

Optimization design of routing algorithm based on collection tree protocol
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摘要 CTP协议是一种基于树的汇聚协议,它将期望传输值作为路由梯度,具有高效性、高鲁棒性和高可靠性的优点,但也存在负载、能耗不均衡和数据拥塞等缺陷,针对这些问题,提出了一种基于CTP的改进协议(CTP-p),旨在通过改变路由选择指标来优化父节点的选择。为验证CTP-p的优越性,在NS2平台上对CTP和CTP-p进行仿真比较,分别测试了停留时间、节点个数和节点移动速度发生变化时,2个协议在分组递交率、归一化路由开销、端到端的平均时延、传输和接收数据包能耗上的性能表现。仿真结果表明:优化后的CTP-p协议提高了分组递交率,降低了归一化路由开销、端到端的平均时延及传输和接收数据包时的能耗,有效提高了网络的运行效率和连接性。 Collection tree protocol (CTP) is a tree-based routing protocol proposed for gathering data, which takes expected transmissions count as its routing gradient, it has advantages of high efficiency, robustness and reliability. But it still has some defects, such as load imbalance, energy consumption imbalance and data congestion. This paper presents an improved CTP protocol (CTP-p) to optimize parent nodes selection by changing routing gradient. The simulations o~ CTP and CTP-p were carried on NS2 platform to evaluate their routing performance. It tested packet delivery ratio, normalized routing overhead, end-to-end delay and energy consumption for different pause time, number of nodes and moving speed of nodes to evaluate two protocols' performance. The results show that CTP p can increase packet delivery ratio, decrease normalized routing overhead, end to end delay and energy consumption, and improve network efficiency and connectivity effectively.
作者 朱璇 李虹 刘云飞 张福全 Zhu Xuan;Li Hong;Liu Yunfei;Zhang Fuquan(College of Information Science and Technology,Nanjing Forestry University,Nanjing 210037,China)
出处 《电子测量技术》 2018年第16期7-12,共6页 Electronic Measurement Technology
基金 国家自然科学基金面上项目(31670554) 江苏省自然基金项目(BK20161527)资助
关键词 无线传感器网络 CTP 路由协议 算法优化 NS2 wireless sensor network(WSN) collection tree protocol(CTP) routing protocol algorithm optimization network simulator version 2(NS2)
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