一种非均匀分布环境下的WMSNs路由协议  

Nonuniform Distribution Environments Routing Protocol for Wireless Multimedia Sensor Networks

作　　者：张军[1] 王小明[1] 杨涛[1] 

机构地区：[1]陕西师范大学计算机科学学院,陕西西安710062

出　　处：《计算机技术与发展》2010年第7期84-88,共5页Computer Technology and Development

基　　金：国家自然科学基金(60773224;60970054);教育部科学技术研究重点项目(107106);教育部留学回国人员科研基金项目

摘　　要：针对无线多媒体传感器网络(WMSNs)节点能量受限和随机分布不均衡的特点,提出了一种在节点非均匀分布条件下适合WMSNs信息传输的路由协议,以达到缩短传输时延和延长网络生命周期的目的。该路由协议在选取前向邻居节点时,根据自身的邻居节点个数,选取一定方向角度内的节点作为前向节点集合。如果该区域内邻居节点为空,则动态地扩大区域范围,在传输数据时,根据前向节点的能量是否低于前向节点的平均能量一定阈值而选择传输与否,并利用OPNET仿真工具软件对该协议和LEACH协议进行仿真和比较,结果表明该协议具有良好的性能。For the characteristics of wireless multimedia sensor networks（WMSNs） which have energy-constrained nodes and the random distribution,proposed a nonuniform distribution of the nodes under the conditions of information transmission for WMSNs routing protocol,in order to achieve reduced transmission delay and the purpose of extending the network life cycle.The routing protocol selected prior to the neighbor nodes,the number of nodes according to their own neighbors,select a certain angle in the direction of the node to node,as the former set.If the area is empty,it does dynamic expansion of regional scope;When it transmits data,depending on the node before the energy is lower than pre-to the average energy of a certain threshold,the node then chooses transmission,and use OPNET simulation tools for the protocol and LEACH protocol simulation and comparison,then the results show that the protocol has good performance.

关 键 词：无线多媒体传感器网络 路由协议 生命周期 OPNET 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]