文献类型：期刊文献

英文题名：Designand Analysis of Weighted Frequency-Domain Contention in Wireless LANs

作者：Zhang, Huan[1,2];Zhao, Qinglin[1];Ma, Zhijie[1];Xu, Fangxin[1]

第一作者：张欢;Zhang, Huan

通讯作者：Zhao, QL[1]

机构：[1]Macau Univ Sci & Technol, Fac Informat Technol, Macau 999078, Peoples R China;[2]Beijing Union Univ, Coll Informat & Technol, Beijing 100101, Peoples R China

第一机构：Macau Univ Sci & Technol, Fac Informat Technol, Macau 999078, Peoples R China

通讯机构：[1]corresponding author), Macau Univ Sci & Technol, Fac Informat Technol, Macau 999078, Peoples R China.

年份：2017

卷号：5

起止页码：1639-1648

外文期刊名：IEEE ACCESS

收录：;EI(收录号：20171203482602);Scopus(收录号：2-s2.0-85015732477);WOS:【SCI-EXPANDED(收录号:WOS:000397136900084)】；

基金：This work was supported in part by the Macao FDCT-MOST under Grant 001/2015/AMJ and in part by the Macao FDCT Grant 104/2014/A3 and Grant 005/2016/A1.

语种：英文

外文关键词：Weighted; frequency-domaincontention; WLANs

摘要：The time to frequency protocol is the first frequency-domain contention protocol in wireless LANs, and has attracted a great deal of attention, since it can improve channel efficiency significantly. However, this protocol mainly provides a uniform service by letting each user conduct channel contention over the same frequency-domain range. In this paper, we first propose a novel weighted frequency-domain contention (WFC) scheme for service differentiation. In WFC, different frequency-domain ranges are assigned to different users to achieve weighted channel access opportunity, and a signature-assisted method is employed to completely exclude collisions. We then develop a theoretical framework to study the performance of WFC. With this framework, we can evaluate system throughput, optimize system parameter settings, and achieve proportional fairness. Extensive simulations verify that our theoretical model is very accurate.