A Detection-Switching-Assisted DCF Mechanism for Simulcast WLAN-over-Fiber Based Distributed Antenna Systems  

作　　者：FAN Yuting LI Jianqiang XU Kun DAI Yitang 

机构地区：[1]State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications

出　　处：《Chinese Journal of Electronics》2017年第4期837-841,共5页电子学报（英文版）

基　　金：in part supported by The National High Technology Research and Development Program of China(863 Program)(No.2015AA016903);the National Natural Science Foundation of China Program(No.61431003,No.61302086);Specialized Research Fund for the Doctoral Program of Higher Education(No.20130005120007)

摘　　要：Distributed antenna systems(DASs) using Radio-over-fiber(Ro F) links is a promising candidate to provide flexible coverage and high data rates. For simulcast Wireless local-area network(WLAN) use in Ro F systems, the stations covered by different Remote antenna units(RAUs) contend for the wireless medium using Media access control(MAC) mechanism. Severe inter-RAU hidden nodes problem will happen due to the stations in different RAUs cannot detect each other very well. In order to alleviate this inter-RAU collision problem, a promising detection-switching-assisted Distributed coordination function(DCF) mechanism is presented using in the uplink. The control delay issues of the proposed mechanism are also discussed in this paper.Distributed antenna systems（DASs） using Radio-over-fiber（Ro F） links is a promising candidate to provide flexible coverage and high data rates. For simulcast Wireless local-area network（WLAN） use in Ro F systems, the stations covered by different Remote antenna units（RAUs） contend for the wireless medium using Media access control（MAC） mechanism. Severe inter-RAU hidden nodes problem will happen due to the stations in different RAUs cannot detect each other very well. In order to alleviate this inter-RAU collision problem, a promising detection-switching-assisted Distributed coordination function（DCF） mechanism is presented using in the uplink. The control delay issues of the proposed mechanism are also discussed in this paper.

关 键 词：Radio-over-fiber(RoF) Distributed an tenna system IEEE 802.11.Detection-switch mechanism 

分 类 号：TN925.93[电子电信—通信与信息系统]