IEEE 802.11s路由切换分析与改进  

Analysis and improvement of route switch in IEEE 802.11s

作　　者：游波[1,2] 阎跃鹏[1,2] 

机构地区：[1]中国科学院微电子研究所,北京100029 [2]昆山市工业技术研究院,江苏昆山215300

出　　处：《通信学报》2012年第9期23-30,共8页Journal on Communications

基　　金：国家科技重大专项基金资助项目(2009ZX03006-005;2010ZX03006-003-02)~~

摘　　要：分析了IEEE 802.11s中混合无线mesh协议的路由切换行为,并针对切换过程中的分组丢失问题做出了改进。在IEEE 802.11s的mesh对等连接管理协议中加入基于接收信号强度的门限判定机制,通过控制对等连接状态改变HWMP的路由切换时机,避免了路由切换时的分组丢失。实验结果表明在节点低速移动的不受控无线环境中,相比传统的IEEE 802.11s,该改进方案的分组丢失率下降了2%~5%。Analyzed the route switch of hybrid wireless mesh protocol（HWMP） in IEEE 802.11s and made an improve-ment to reduce the packet lost rate when routes switching was analyzed.Based on the received signal strength indica-tor（RSSI） a scheme with judgment threshold in mesh peer link management protocol was proposed,which controlled the status of peer link to change the timing of route switch.In this way,the packet lost was avoided.The experimental results show that the improvement reduces the packet lost rate by 2%~5% compared with traditional IEEE 802.11s in uncon-trolled wireless environment when nodes moving in low speed.

关 键 词：分组丢失率 路由协议 对等连接 混合无线网状网协议 接收信号强度 

分 类 号：TP393.02[自动化与计算机技术—计算机应用技术]