基于HELLO包链路质量感知的多跳路由  

HELLO packet-link quality aware based multi-hop routing

作　　者：刘飞飞[1] 蔺婧娜[1] 刘潇潇[1] 

机构地区：[1]山西大学商务学院,山西太原030031

出　　处：《计算机工程与设计》2017年第12期3197-3201,共5页Computer Engineering and Design

基　　金：国家自然科学基金项目(2014JK1160);山西省科技厅软科学课题基金项目(2015041002-1)

摘　　要：由于车联网(vehicle Ad hoc networks,VANETs)采用IEEE 802.11p协议,传输距离短,常引用多跳路由。为此,提出基于HELLO包的链路质量感知的多跳路由(HELLO packet-link quality aware based multi-hop routing,HPLQAMH)协议。引用HELLO包建立一跳邻居集,减少控制开销;用隐晦确认机制构建具有双向通道的节点集,估计链路质量;通过链路质量和距离因子估计节点转发权重,依据节点权重设置消息转发时延,降低数据传输时延。仿真结果表明,HP-LQAMH协议在消息丢失率、吞吐量性能方面优于同类协议。Since the transmission distance in vehicle Ad hoc networks(VANETs)is short,the IEEE 802.11 p is adopted.Therefore,HELLO packet-link quality aware based multi-hop(HP-LQAMH)routing was proposed.A hop neighbor set was constructed by exchanging HELLO packet to reduce the overhead,and the bi-directional communication set was estimated using obscure confirmation mechanism.The link quality was estimated,and the weight of nodes was computed based on link quality and distance factor.The delay of relaying message was done according to its weight to reduce the delay.Results from extensive simulation analysis reveal that the proposed HP-LQAMH protocol outperforms existing multi-hop broadcasting schemes in terms of message loss ratio and throughput.

关 键 词：车联网 多跳路由 HELLO包 确认机制 链路质量 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]