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1. 南京邮电大学通信与信息工程学院 南京 210003
2. 南京邮电大学网络基因工程研究所 南京 210003
3. 国网上海市电力公司信息通信公司 上海 200122
4. 江苏有线数据网络有限公司 南京 210003
[ "刘委婉,女,南京邮电大学硕士生,主要研究方向为移动通信与无线技术、车载自组织网络的MAC协议。" ]
[ "陈志佳,女,国网上海市电力公司信息通信公司工程师,长期从事电力通信工作。" ]
[ "刘南杰,男,博士,南京邮电大学教授、硕士生导师,教育部工程研究中心副主任,南京邮电大学网络基因研究所所长,中国通信学会信息通信网络技术委员会委员,主要研究方向为车联网通信与网络基因工程。" ]
[ "仲浩,男,南京邮电大学硕士生,江苏有线数据网络有限公司工程师,主要研究方向为无线通信与传输。" ]
[ "赵海涛,男,博士,南京邮电大学讲师、硕士生导师,主要研究方向为无线多媒体通信。" ]
网络出版日期:2014-03,
纸质出版日期:2014-03-20
移动端阅览
刘委婉, 陈志佳, 刘南杰, 等. VANET中基于碰撞概率和过期概率的自适应退避算法研究[J]. 电信科学, 2014,30(3):94-99.
Weiwan Liu, Zhijia Chen, Nanjie Liu, et al. A Self-Adaptive Back-Off Algorithm Based on Collision Probability and Expiration Probability of Beacons in VANET[J]. Telecommunications science, 2014, 30(3): 94-99.
刘委婉, 陈志佳, 刘南杰, 等. VANET中基于碰撞概率和过期概率的自适应退避算法研究[J]. 电信科学, 2014,30(3):94-99. DOI: 10.3969/j.issn.1000-0801.2014.03.017.
Weiwan Liu, Zhijia Chen, Nanjie Liu, et al. A Self-Adaptive Back-Off Algorithm Based on Collision Probability and Expiration Probability of Beacons in VANET[J]. Telecommunications science, 2014, 30(3): 94-99. DOI: 10.3969/j.issn.1000-0801.2014.03.017.
为了提高车载自组织网络中信标消息的广播接收率,可通过建立马尔可夫链模型得出消息的碰撞概率和过期概率随最小竞争窗口的变化关系。根据上述结论提出一种根据当前车载网中过期消息数与预先设定门限值的相对大小关系而进行最小竞争窗口调整的退避算法CEB;对新提出的算法和原有的退避算法RBEB及BEB进行了仿真对比分析。仿真结果表明,所提出的退避算法相比于已有的退避算法,信标消息性能有了很大的提升。
In order to improve the broadcast reception rate in VANET
the conclusion that the relationship between collision probability and minimum contention window size and the relationship between expiration probability and minimum window size were reached by building Markov model. According to this conclusion
a minimum contention window size adjustment back-off algorithm called CEB was proposed
it is on the basis of the relative size between the number of expiration beacons and pre-set threshold. Simulations were done to compare the performance of CEB
RBEB and BEB
and the results show that the performance of the new proposed algorithm is better than that of RBEB and BEB.
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熊栋宇 , 陈前斌 , 唐伦 等 . 车载安全应用广播性能分析 . 计算机应用研究 , 2010 ( 4 )
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