下一代WLAN多用户多址接入技术仿真研究  

Simulation Research on Multi-User Media Access Control Technology for the Next Generation WLAN

作　　者：周润[1] 李波[1] 杨懋[1] 闫中江[1] ZHOU Run;LI Bo;YANG Mao;YAN Zhong-jiang(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

出　　处：《计算机仿真》2019年第8期288-292,共5页Computer Simulation

基　　金：国家自然科学基金项目(61871322,61771390,61771392,61501373,61271279);国家科技重大专项项目(2016ZX03001018-004,2015ZX03002006-004);中央高校基本科研业务费(302017ZY018)

摘　　要：随着无线业务数据量的激增,基于单用户多址接入(Singer User Media Access Control,SU MAC)协议的传统无线局域网(Wireless Local Area Network,WLAN)已经无法满足用户的需求。针对这一问题,IEEE 802.11ax工作组将正交频分多址(Orthogonal Frequency Division Multiple Access,OFDMA)技术和上行多用户(Multi-User,MU)多输入多输出(Multiple Input Multiple Output,MIMO)技术引入到下一代WLAN MAC,实现了多用户并行接入和传输,从而大幅度提高MAC效率,满足广大用户的需求。最后,仿真结果表明,MU MAC协议的网络吞吐量在20MHz、80MHz和160MHz信道带宽时,分别是802.11ac协议的1.34倍、 2.05倍和2.73倍。With the rapid growth of wireless traffic data, the traditional wireless local area network (WLAN ) based on single user media access control ( SUMAC ) protocol has been unable to meet the needs of users. In order to solve this problem, the IEEE 802. 11 ax working group introduced orthogonal frequency division multiple access (OFDMA ) technology and multi - user ( MU ) multiple input multiple output ( MIMO ) technology to the next generation WLANMAC to perform MU parallel access and transmission, thereby greatly improving the MAC efficiency to meet the needs of the vast number of users. Finally, the simulation results show that the network throughput of MUMAC protocol is 1. 34 times, 2. 05 times and 2. 73 times of 802. 11ac MAC protocol when the channel bandwidth is 20M Hz , 80MHz and 160M Hz respectively.

关 键 词：多址接入 下一代无线局域网 正交频分多址 多用户多输入多输出 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]