无线传感器网络中拥塞避免的转换路由协议  

Congestion-avoidance altering routing protocol in wireless sensor networks

作　　者：张志[1] 崔国华[2] 

机构地区：[1]中南财经政法大学信息与安全工程学院,湖北武汉430073 [2]华中科技大学计算机科学与技术学院,湖北武汉430074

出　　处：《华中科技大学学报（自然科学版）》2010年第10期13-17,共5页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(60703048);湖北省自然科学基金资助项目(2007ABA313)

摘　　要：针对无线传感器网络路由的不稳定性,提出了一种新的拥塞避免转换路由协议.此协议能够及时有效地检测出潜在的拥塞;将发生拥塞地区的报文通过转换路由树转移到其他拥塞和延时更小的最佳路由;对于无法转发的报文,协议提出一种基于优先级的拥塞报文暂存机制,从而有效地减少拥塞报文的丢失.此外,还综合考虑了通过统计获得的节点队列负载容量,提出了一个新的路由准则'拥塞度'来度量网络节点传输的拥塞控制状态.仿真结果表明,提出的路由算法能够提供较好的网络流传输公平性及负载均衡性能.Considering routing instability in wireless sensor network, an ICAAR （improved congestion-avoidance altering routing） protocol was presented to alleviate congestion. Based on the relationship of the each node, the suitable local cluster header was selected. The stability condition was derived by the congestion detect technique; once congestion happens inevitably, ICAAR is reallocate traffic with altering route protocol to mitigate congestion, avoid conflict, enhances data transmission reliability of,the cluster header. The protocol introduces a congestion data local preservation strategies, it effectively avoids data lost during the congestion period and guarantee the reliability of data transmission. The simulation results show that the protocol can implement network load balancing, prolong the life cycle of the clusters and postpones the network system lifetime.

关 键 词：计算机网络 拥塞避免 转换路由 本地存储 负载平衡 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]