车载无线网络中基于冲突估计的多信道选择策略

J4 ›› 2012, Vol. 50 ›› Issue (03): 557-.

车载无线网络中基于冲突估计的多信道选择策略

赵鼎新, 谢显中, 王昭然

重庆邮电大学计算机科学与技术学院, 宽带接入网络研究所, 重庆 400065

收稿日期:2011-08-22 出版日期:2012-05-26 发布日期:2012-05-28
通讯作者: 谢显中 E-mail:xiexianzhong.cn@gmail.com

Multichannel Choose Policy Based on Conflict Estimating in Wireless Vehicular Networks

ZHAO Dingxin, XIE Xianzhong, WANG Zhaoran

Institute of Broadband Access Technologies, College of Computer Science and Technology, Chongqing University of Posts and Telecommunications, Chongqing 400065, China

Received:2011-08-22 Online:2012-05-26 Published:2012-05-28
Contact: XIE Xianzhong E-mail:xiexianzhong.cn@gmail.com

摘要/Abstract

摘要：

通过分析IEEE 802.11p/1609的信道切换与数据传输机制, 采用Markov链和连续空闲时隙结合的方法, 给出了信道中各种不同类型业务的业务量与冲突概率的关系, 并提出了一种信道选择方法, 选出最佳的接入信道, 以平衡各信道中的业务量, 解决了原协议中无信道选择策略可能带来的信道拥塞问题. 仿真结果表明, 采用本文的信道选择策略, 可有效提高站点的平均吞吐率.

关键词: IEEE802.11p/1609； WAVE；冲突估计；信道选择

Abstract:

The authors proposed a Markov chain model and a continuous idle slots model for the transmission mechanism of IEEE 802.11p/1609. Using these two models, we got the conflict probability of WAVE system, on the basis of which, a channel chose policy was presented to get the best access channel. This policy can balance the throughput of all the channels and solve the channel congestion problem in the basal protocol. The simulation results show that the average throughput rate was improved obviously.

Key words: IEEE802.11p/1609, WAVE, conflict estimating, channel chose

中图分类号:

TN820

赵鼎新, 谢显中, 王昭然. 车载无线网络中基于冲突估计的多信道选择策略[J]. J4, 2012, 50(03): 557-.

DIAO Ding-Xin, XIE Xian-Zhong, WANG Zhao-Ran. Multichannel Choose Policy Based on Conflict Estimating in Wireless Vehicular Networks[J]. J4, 2012, 50(03): 557-.