Boosting VoIP Capacity via Service Differentiation in IEEE 802.11e EDCA Networks

被引：3

作者：

Dong, Pingping ^{[1
,2
]}

Wang, Jianxin ^{[1
]}

Wang, Haodong ^{[3
]}

Pan, Yi ^{[4
]}

机构：

[1] Cent S Univ, Sch Informat Sci & Engn, Changsha 410083, Hunan, Peoples R China

[2] Sci & Technol Informat Transmiss & Dissemina Comm, Shijiazhuang 050081, Hebei, Peoples R China

[3] Cleveland State Univ, Dept Comp & Informat Sci, Cleveland, OH 44115 USA

[4] Georgia State Univ, Dept Comp Sci, Atlanta, GA 30302 USA

来源：

INTERNATIONAL JOURNAL OF DISTRIBUTED SENSOR NETWORKS | 2015年

基金：

中国国家自然科学基金; 美国国家科学基金会;

关键词：

WLAN; FAIRNESS; ACCESS;

D O I：

10.1155/2015/235648

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper considers the performance problem of VoIP over 802.11eWLANs caused by the unfairness between uplink and downlink as well as the inefficient EDCA. A novel medium access control scheme named BEDCA (Balanced EDCA) is presented, which provides service differentiation between the access point (AP) and the mobile stations (STAs) to enhance VoIP capacity. In BEDCA, the expression of AP's contention window is obtained which is a relative constant value independent of the participating STAs. The minimum contention window of the STAs is traffic-aware based on the proposed algorithm. The performance improvement of BEDCA is verified through intensive simulations and the results show the capacity improvement of 82.1% compared to EDCA.

引用

页数：11

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