计算机技术与发展Issue(6)：73-76,83,5.DOI:10.3969/j.issn.1673-629X.2015.06.16
VANET多信道传输中控制信道冲突缓解算法研究
Research on Collision Mitigation in Control Channel for Multi-channel Transmission in VANET
摘要
Abstract
Multi-channel transmission will lead to channel switch in VANET,which causes the synchronized collisions at the start of con-trol channel. Propose a method to relieve this collision effectively and adjust the degree of channel congestion dynamically by estimating channel utilization and computing the transmission probability with vehicles. Firstly,the mechanism of control channel transmission has planned. The priority of safety-related messages is higher than reservation message of service channel and so on. Then the channel load will be distributed self-adaptively. When the load is heavy,the transmission probability reduces as well,part of vehicles need re-competi-tion of control channel,for the purpose of collision mitigation. Simulation results show that this method can improve the rate of package forwards,reducing the transmission delay and relieving the synchronized collisions caused by channel switch effectively.关键词
同步冲突/信道占用率/发送概率/自适应信道负载分散Key words
synchronized collisions/channel utilization/transmission probability/adaptive channel load distribution分类
信息技术与安全科学引用本文复制引用
张伟,刘南杰,赵海涛..VANET多信道传输中控制信道冲突缓解算法研究[J].计算机技术与发展,2015,(6):73-76,83,5.基金项目
国家“973”重点基础研究发展计划项目(2013CB329005) （2013CB329005）
国家自然科学基金资助项目(61302100,61201162) （61302100,61201162）
江苏省基础研究计划-重点研究专项基金(BK2011027,BK2012434) （BK2011027,BK2012434）
江苏省高校自然科学研究基金(12KJB510022,12KJB510020) （12KJB510022,12KJB510020）
南京邮电大学引进人才科研启动基金(NY211007,NY211006) （NY211007,NY211006）
