一种适用于单信道全双工通信的PCF协议  

PCF protocol for single-channel full-duplex communications

作　　者：欧静兰[1] 邹玉涛[1] 陈昌燕[1] 吴皓威[2] 

机构地区：[1]重庆大学通信工程学院,重庆400044 [2]重庆大学飞行器测控与通信教育部重点实验室,重庆400044

出　　处：《华中科技大学学报（自然科学版）》2016年第8期80-84,共5页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：重庆市院士基金资助项目(cstc2014yykfys90001);中央高校基本科研业务费专项资金资助项目(CDJZR14100050;106112013CDJZR165502)

摘　　要：针对单信道全双工WLAN系统,在传统半双工点协调功能(PCF)的基础上,提出一种单信道全双工PCF协议,该协议具有自适应单/双向传输、高效询、低功耗等优点;采用M/G/1休假队列模型分析了该协议的时延和吞吐量等性能.性能分析和仿真结果表明:全双工PCF的性能较传统半双工PCF有较大提升;在信噪比和包到达率相等的情况下,时延特性较半双工PCF提升60%以上,吞吐量性能较半双工PCF提升近60%.因此,所提单信道全双工PCF协议更适合用于高速率、大数据量,且对时延敏感的环境.Based on traditional half-duplex point coordination function（HD-PCF）,a full-duplex PCF protocol（FD-PCF）for single-channel FD-based wireless local area networks（WLAN）systems was proposed,which had several advantages,such as the adaptive one-way/two-way transmissions,highefficiency polling,low power consumption,and so on.Then,the performances of the time delay and throughput for the proposed protocol were analyzed,employing the M/G/1queue with vacations.Theoretical analyses and simulation results show that the proposed FD-PCF significantly outperforms the traditional HD-PCF.Under the same SNR and packet rate,the proposed FD-PCF outperforms the HD-PCF in terms of the time delay and throughput,by 60% and nearly 60%,respectively.Hence,the proposed FD-PCF is very suitable for the environment which has requirements,including high data rate,large data processing,and high time delay sensitivity.

关 键 词：无线通信 全双工 点协调功能 媒体接入控制协议 无线局域网 

分 类 号：TN915.04[电子电信—通信与信息系统]