一种IEEE 802.11s树型网络的PREQ广播风暴抑制方案  

Scheme to reduce broadcast storm of PREQ in IEEE 802.11s tree network

作　　者：游波[1,2] 牟荣增[1,2] 阎跃鹏[1,2] 

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

出　　处：《计算机应用研究》2012年第8期3108-3110,共3页Application Research of Computers

基　　金：国家"863"计划资助项目(2010AA040102);国家科技重大专项资助项目(2010ZX03006-003-02)

摘　　要：在IEEE 802.11s的树型网络中,为了解决子节点之间洪泛PREQ维护路由时引发的PREQ广播风暴问题,基于HWMP的表驱动路由,提出了一种限制PREQ广播范围的广播风暴抑制方案。在该方案中,子节点根据自己到根节点的路由跳数设置PREQ的TTL,缩小了PREQ的传输距离,降低了冗余PREQ的数量。实验结果表明,与IEEE 802.11s相比,本方案有效地减小了网络中的路由开销,提高了网络吞吐量。To reduce the broadcast storm of PREQ caused by simply flooding of PREQ to maintain routes between leaf nodes in tree network based on IEEE 802.11 s ; this paper proposed a new scheme to limit the broadcast region of PREQ based on the table-driven routing in HWMP. In this scheme, one leaf node set the TTL of PREQ according to the hop count in its route to the root node, which limited the delivery distance of PREQ and decreased the number of redundant PREQ. Experiment shows that compared with IEEE 802. 11 s, this new scheme can effectively reduce the costs for routing and increase the network throughput.

关 键 词：广播风暴 树型网络 混合无线网状网协议 生存时间 路径请求 

分 类 号：TP393.02[自动化与计算机技术—计算机应用技术]