Improvement of polling and scheduling scheme for real-time transmission with HCCA of IEEE 802.11p protocol

被引：6

作者：

Zhang, Bing ^{[1
]}

Ma, Mao-De ^{[2
]}

Liu, Chun-Feng ^{[1
]}

Shu, Yan-Tai ^{[1
]}

机构：

[1] School of Computer Science and Technology, Tianjin University

[2] School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore

来源：

Journal of China Universities of Posts and Telecommunications | 2013年 / 20卷 / 03期

基金：

中国国家自然科学基金;

关键词：

HCCA; IEEE; 802.11p; polling; scheduling; V2R;

D O I：

10.1016/S1005-8885(13)60050-3

中图分类号：

学科分类号：

摘要：

This paper addresses the issue of real-time data transmission in vehicles to roadside (V2R) environment by the hybrid coordination function (HCF) of controlled channel access (HCCA) specified by the IEEE 802.11p standard. HCCA is one of the medium access mechanisms in the IEEE 802.11 standard, and uses the polling scheme similar to the point coordination function (PCF) to provide reliable quality of service (QoS), which may cause resource overshooting and high time consuming. This paper tries to improve the performance of the HCCA polling scheme and designs new data transmission scheduling scheme. The simulation results of the proposal are compared with those of the standard strategy. Simulation results demonstrate that the improved HCCA has lower delay, loss rate, and higher throughput than those of the standard one. © 2013 The Journal of China Universities of Posts and Telecommunications.

引用

页码：60 / 66

页数：6

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