A Two-Phase Contention Window Control Scheme for Decentralized Wireless Networks

被引：0
|
作者：
Borges, Luis M. [1 ]
Velez, Fernando J. [1 ]
Oliveira, Rodolfo [2 ]
机构：
[1] Univ Beira Interior, Inst Telecomunicacoes, Dept Electromech Engn, P-6201001 Covilha, Portugal
[2] Nova Univ Lisbon, Fac Ciencias & Tecnol, Inst Telecomunicacoes, Dept Electrotech Engn, Lisbon, Portugal
来源：
2014 IEEE WIRELESS COMMUNICATIONS AND NETWORKING CONFERENCE (WCNC) | 2014年
关键词：
ACCESS-CONTROL; IEEE-802.11; PERFORMANCE; LANS;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Most studies on performance of IEEE 802.11 distributed coordination function (DCF) have proved that the binary exponential backoff (BEB) algorithm suffers from low throughput, long transmission delays and low transmission reliability, for a high traffic load. In this paper, we propose a two-phase contention window (TPCW) access mechanism that enhances the aggregate throughput and transmission reliability while decreasing the medium access delay. In addition, this scheme aims at being computationally simple. This work characterizes the performance of the TPCW mechanism for different parameterization values. An analytical model is proposed for the TPCW access mechanism, which characterizes the frame transmission reliability, the total transmission delay and the aggregate throughput. The validity of our analytical model is verified through extensive simulations. By comparing the performance results, we conclude that the proposed scheme can significantly enhance IEEE 802.11 in terms of frame transmission reliability, total transmission delay and aggregate throughput.
引用
收藏
页码：1550 / 1555
页数：6
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