IEEE 802.11p车载自组网络协议的EDCA自适应退避算法研究

J4 ›› 2014, Vol. 36 ›› Issue (10): 1932-1936.

IEEE 802.11p车载自组网络协议的EDCA自适应退避算法研究

张俊健，吴悦

（上海大学计算机工程与科学学院,上海 200444）

收稿日期:2013-04-03 修回日期:2013-06-08 出版日期:2014-10-25 发布日期:2014-10-25
基金资助:
上海市重点学科建设项目资助(J50103)

Research of the EDCA selfadaptive backoff
algorithm for IEEE 802.11p VANET protocol

ZHANG Junjian,WU Yue

(School of Computer Engineering and Science,Shanghai University,Shanghai 200444,China)

Received:2013-04-03 Revised:2013-06-08 Online:2014-10-25 Published:2014-10-25

摘要/Abstract

摘要：

IEEE 802.11p是IEEE针对车辆网络颁布的物理层与MAC层标准,网络中车辆密度是动态变化的，而IEEE 802.11p协议没有提出根据网络情况动态调整EDCA参数来优化网络性能。为了解决网络中节点密度变化带来的吞吐量低、碰撞率高的问题，提出一种EDCA自适应退避优化算法。仿真实验结果表明，该算法相对于传统EDCA算法，性能大幅度提高。

关键词: 车辆网络, EDCA, QoS

Abstract:

802.11p is the standard for PHY and MAC promulgated by the IEEE for VANET. Density of vehicles is dynamic in the networks, but IEEE 802.11p protocol does not optimize network performance by adjusting the EDCA parameters dynamically according to network status. In order to solve the problem of low throughput and high collision rate caused by the change of network density, an algorithm is proposed, which dynamically adjust EDCA parameters to improve data throughput. The simulation results indicate that the proposed method can achieve better performance than EDCA.

Key words: VANET;EDCA;QoS1

张俊健，吴悦. IEEE 802.11p车载自组网络协议的EDCA自适应退避算法研究[J]. J4, 2014, 36(10): 1932-1936.

ZHANG Junjian,WU Yue. Research of the EDCA selfadaptive backoff
algorithm for IEEE 802.11p VANET protocol [J]. J4, 2014, 36(10): 1932-1936.

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