考虑节点交通特性的VANET分簇广播协议  

A node-traffic characteristics considered clustering broadcast protocol for VANETs

作　　者：周连科[1] 左德承[1] 崔刚[1] 刘宏伟[1] 

机构地区：[1]哈尔滨工业大学计算机科学与技术学院,哈尔滨150001

出　　处：《高技术通讯》2012年第5期468-476,共9页Chinese High Technology Letters

基　　金：863计划（2008AA01A204）资助项目.

摘　　要：结合车用自组织网络（VANET）的道路交通特点，针对车辆节点的交通行为特性，提出了一种适合VANET道路交通场景的基于综合加权的分簇广播协议。该协议在簇建立和维护过程中都充分考虑了交通规则和结点运动规律对网络的影响，力求以较小的控制开销形成稳定的分簇网络。并根据交通流理论中车头间距与速度关系模型设计了符合实际的节点移动模型以进行仿真实验。实验结果表明，采用该协议形成的分簇网络结构简单、稳定，控制开销小，同时能够保证广播的可靠性，并有效降低了网络负载，适合多种交通场景下的VANET高效广播。A combined weighted clustering broadcast protocol is proposed to construct a stable clustering architecture for vehicular ad hoc networks （VANET）. The protocol adopts the combined weighted methodology to select the cluster heads. The traffic rules and road traffic characteristics are taken into account to make the architecture more stable and to reduce the additional communication for cluster building and maintaining. A simulation experiment was designed to validate the performances of the protocol, in which a practical mobility model was designed according to the relationship between the space headway and the velocity of vehicles. The result showed that the cluster architecture formed based the proposed protocol was simple and stable, the control overhead was low and the load was reduced efficiently, at the same time the reliability was guaranteed. This protocol can meet the efficient broadcasting requirements of VANET in different conditions.

关 键 词：移动自组网(MANET) 车用自组织网络(VANET) 广播协议 分簇 交通特性 

分 类 号：U491[交通运输工程—交通运输规划与管理]