VANET网络中一种支持优先级区分的新机制  

Novel MAC Mechanism with Priority Differentiation for VANET

作　　者：谢海波[1] 崔毅东[1] 徐惠民[1] 

机构地区：[1]北京邮电大学电信工程学院,北京100876

出　　处：《计算机应用研究》2007年第5期250-252,共3页Application Research of Computers

基　　金：国家自然科学基金资助项目(90204003);国家"973"计划资助项目(2006CB-701306)

摘　　要：提出一种支持优先级区分的MAC机制,并引入了两种新的操作机制,即接力传输和接力中断。受IEEE 802.11协议段突发机制启发,对于高优先级业务,MAC帧由源端被接力传输至目的端;对于不同优先级的业务,产生不同次数的接力中断。每次接力中断增加一次信道竞争,由此达到不同优先级业务的区分。NS-2仿真证明了该机制的有效性。A new MAC mechanism for priority differentiation was proposed. Inspired by IEEE 802.11 fragment burst, two new terms named frame-relay and relay-interruption were introduced for different priority applications, With frame-relay, top priority applications could be delivered from source node to destination with minimum contention. For different priority traffic, different times of frame-interruption were applied. NS-2 simulation demonstrated the feasible of the proposed approach.

关 键 词：车载自组网络 优先级区分 IEEE 802.11 段突发 接力传输 接力中断 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]