一种免触发的多用户全双工MAC协议研究  

Research on a Trigger-Free Multi-User Full-Duplex MAC Protocol

作　　者：彭美平 李波[1] 闫中江[1] 杨懋[1] PENG Mei-ping;LI Bo;YAN Zhong-jiang;YANG Mao(School of Electronics and Information,Northwestern Polytechnical University,Xi'an Shanxi 710129,China)

机构地区：[1]西北工业大学电子信息学院,陕西西安710129

出　　处：《计算机仿真》2020年第10期132-136,186,共6页Computer Simulation

基　　金：国家自然科学基金项目(61771392,61771390,61871322,61501373,61271279);国家科技重大专项项目(2016ZX03001018-004,2015ZX03002006-004);航空基金(20185553035)。

摘　　要：针对传统无线局域网MAC多址接入协议的频谱利用率较低问题,设计了一种面向下一代WLAN的免触发的新型多用户全双工MAC协议:简称FD-OMAX。上述协议由STA上行触发建立全双工链路传输对,AP调度全双工链路传输,保障高效全双工链路对成功传输。进而,提出一种瞬时全双工链路对匹配算法,有效提升了全双工链路对形成的成功概率;并对提出的协议建立系统级网络仿真模型。仿真结果表明:在饱和业务量下,FD-OMAX协议与MU-FuPlex协议、FuPlex协议以及OMAX协议相比,系统吞吐量和成功建立全双链路对的概率有了极大的提升。Aiming at the low spectrum utilization of traditional WLAN MAC multiple access protocol, a new type of multi-user full duplex MAC protocol named as: FD-OMAX, was designed for next generation WLAN. The protocol was triggered by STA uplink to establish full duplex link transmission pair, and AP scheduled full duplex link transmission to ensure the successful transmission of high-efficiency full duplex link pair. Furthermore, an instantaneous full duplex link pair matching algorithm was proposed, which effectively improved the success probability of the formation of full duplex link pair, and a system level network simulation model was established for the proposed protocol. The simulation results show that compared with MU-FuPlex protocol, FuPlex protocol and OMAX protocol, FD-OMAX protocol greatly improves the throughput of the system and the probability of establishing a full dual link pair successfully.

关 键 词：多址接入 下一代无线局域网 正交频分多址 全双工 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]