基于位置辅助的自适应广播AODV路由协议  

Adaptive Broadcast AODV Routing Protocol Based on Location Assistance

作　　者：李友良 陈桂芬[1] 罗宝翔 LI You-liang;CHEN Gui-fen;LUO Bao-xiang(School of Electronics and Information Engineering,Changchun University of Science and Technology,Changchun 130022)

机构地区：[1]长春理工大学电子信息工程学院,长春130022

出　　处：《长春理工大学学报（自然科学版）》2021年第4期64-70,共7页Journal of Changchun University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金项目(61540022);吉林省科技厅项目(20190302103G X);。

摘　　要：由于AODV路由协议采用洪泛的方式广播RREQ,这使得一些本不适合作为此次传输中继的节点也参与了进来。针对这一缺点,提出一种基于位置辅助的自适应广播AODV路由协议——AbAODV(Adaptive broadcast AODV based on location assistance)。节点通过定期交互的HELLO报文获取网络内其它节点的位置信息,考虑到传输时延,提出目的节点位置最大误差值以应对在拓扑快速变化的网络中出现的最恶劣情况。最后在路由发现过程中,节点根据自己与目的节点的地理位置信息和其通信范围内的节点密度,自适应的调整广播角度、缩小RREQ消息的广播范围。有效地减少了过多冗余的路由消息和中继节点的数量,降低了由于节点的移动性出现路径断裂的概率和节点互相通信的能量开销。通过仿真实验表明,相比于传统的AODV路由协议、同类型的GeoAODV、LAODV路由协议,AbAODV都有更好的性能表现。The AODV protocol broadcasts RREQ in a flooded way,so some nodes that are not suitable for this transmis-sion relay are also involved.To address this shortcoming,an adaptive broadcast AODV routing protocol named AbAODV(Adaptive broadcast AODV based on location assistance)based on location assistance is proposed.The location informa-tion of other nodes are obtained in the network through the HELLO message that interacts regularly.Considering the trans-mission delay,the maximum error value of destination node location is proposed to deal with the worst case in the network with rapid topology change.Finally,during the process of route discovery,according to the geographic location information of the destination node and the node density in its communication range,the broadcast angle and narrows are adaptively ad-justed by the broadcast range of RREQ messages.The number of redundant routing messages and relay nodes is effectively reduced;the probability of path breaking due to mobility of nodes and the energy cost of communication between nodes are reduced.Simulation experiments show that compared with traditional AODV routing protocol;GeoAODV and LAODV routing protocol of the same type,the AbAODV all have better performance.

关 键 词：路由协议 位置辅助 自适应广播 能量开销 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]