基于概率广播RREQ的AODV的改进协议  

Probabilistic broadcasting RREQ based AODV improved routing protocol

作　　者：房亚群[1] 安进[1] 

机构地区：[1]江苏食品药品职业技术学院信息工程系,江苏淮安223003

出　　处：《计算机工程与设计》2016年第12期3244-3249,共6页Computer Engineering and Design

基　　金：淮安市产学研协同创新计划基金项目(HAC2014007);江苏省政策引导类计划基金项目(BY2015054-02)

摘　　要：典型的按需路由协议AODV(Ad Hoc on-demand distance vector)易产生大量冗余包,可能导致广播风暴问题,降低MANET(mobile Ad Hoc networks)路由协议性能。为此,提出基于概率广播路由请求RREQ(route REQuest)控制包的AODV的改进协议,记为P_RREQ+AODV。依据信干扰比SINR(signal to interference plus noise ratio)和节点密度计算节点转发RREQ的概率,降低路由开销和传输时延,提高吞吐量。仿真结果表明,与传统的AODV协议相比,P_RREQ+AODV协议的路由开销降低了近50%,吞吐量提高了23%。On-demand routing protocols,such as AODV（Ad Hoc on-demand distance vector）routing,generate excessively redundant routing traffic that may lead to broadcast storm problem（BSP）and deteriorate the performance of MANET significantly.A probabilistic broadcasting RREQ based AODV improved routing protocol was proposed,which was marked as P_RREQ＋AODV.The probability of rebroadcasting RREQ packets on the fly was determined according to the current SINR（signal to interference plus noise ratio）and node density in the neighborhood.The simulation results show that the proposed routing protocol reduces the routing overhead and improves throughput.Compared with AODV,the routing overhead of P_RREQ＋AODV is reduced by 50%,and throughput is improved by 23%.

关 键 词：移动自组织网络 广播风暴 按需路由 概率 信干扰比 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]