Performance Analysis of the EDCA Medium Access Mechanism over the Control Channel of an IEEE 802.11p WAVE Vehicular Network
Performance Analysis of the EDCA Medium Access Mechanism over the Control Channel of an IEEE 802.11p WAVE Vehicular Network
复制标题
DOI：
10.1109/icc.2009.5199316
复制
发表时间：
2009-06
期刊：
影响因子：
--
通讯作者：
J. Gallardo;D. Makrakis;Hussein T. Mouftah
中科院分区：
文献类型：
--
作者：
J. Gallardo;D. Makrakis;Hussein T. Mouftah
美国联邦通信委员会（FCC）已经为提高运输系统的安全性和效率设定了一个特定的频段。它的目的是在路边的电台和车辆上的移动无线电装置之间提供无线通信。由此产生的技术被称为WAVE，目前正在作为IEEE 802.11p标准草案进行开发。时间最紧迫的信息，携带紧急安全相关信息，通过所谓的控制通道（CCH）传输。WAVE设备使用2007版IEEE 802.11标准中定义的EDCA MAC协议来竞争传输介质。本文分析了在WAVE环境下CCH的特定条件下，EDCA的性能。利用马尔可夫链对该协议进行建模，得到了不同业务负载条件下的吞吐量、帧错误率、缓冲区占用率和时延的相关结果。
The FCC has set apart a frequency band with the specific goal of improving safety and efficiency of the transportation system. Its purpose is to provide wireless communications between stations on the roadside and mobile radio units located on board of vehicles. The resulting technology is known as WAVE and is currently under development as draft standard IEEE 802.11p. The most time-critical messages, carrying urgent safety-related information, are transmitted over the so-called control channel (CCH). WAVE devices use the EDCA MAC protocol, defined in the 2007 version of the IEEE 802.11 standard, to compete for the transmission medium. This work analyzes the performance of EDCA under the specific conditions of the CCH of a WAVE environment. The protocol is modeled using Markov chains and results related to throughput, frame-error rate, buffer occupancy and delay are obtained under different traffic-load conditions.