Wi-Fi 6中基于空间复用组的高信道利用率方案  

Efficient Channel Utilization Scheme Based on Spatial Reuse Group Applied in Wi-Fi 6

作　　者：朱德庆[1] ZHU Deqing(Information Center of Hangzhou Normal University,Hangzhou 311121,China)

机构地区：[1]杭州师范大学信息中心,浙江杭州311121

出　　处：《杭州师范大学学报（自然科学版）》2023年第3期312-318,共7页Journal of Hangzhou Normal University(Natural Science Edition)

基　　金：杭州市“131”人才重点资助项目;国家级大学生创新创业项目(202110346023).

摘　　要：针对802.11ax协议中使用空间复用组(SRG)时存在因基本服务集(BSS)颜色选择重复而误判成员的问题,通过在HE SIG-A字段中增加扩展服务集(ESS)颜色标识,实现了对数据包是否来自SRG成员的准确判断.并设计了SRG动态加入方案(DSRG),对于给定的BSS,其周围第1圈同信道的且属于相同ESS的BSS以一定概率成为其DSRG成员,同时,对于其第1圈同信道但不同ESS的BSS则采用相对较大的载波侦听阈值.实验结果表明DSRG可以提高最大同时发生数目或吞吐率近15%,因此所提方案可在实际中使用并提高信道利用率.The spatial reuse group(SRG)in 802.11ax may suffer from misjudging membership due to repeated color selection in the basic service set(BSS).To resolve this problem,an extended service set(ESS)color identification was added in HE SIG-A field to accurately determine whether a packet originated from SRG members.Furthermore,a scheme of SRG dynamic addition(DSRG)was designed.The given BSS with the same channel and belonging to the same ESS in the first-tier around it had a certain probability to become its DSRG members.At the same time,for the BSS with the same channel but different ESS in the first-tier,a relatively large carrier sensing threshold was adopted.The experimental results showed that DSRG could increase the maximum number of simultaneous transmissions or throughput by nearly 15%,so that the proposed scheme could be used in practice to improve the efficiency of channel utilization.

关 键 词：802.11ax Wi-Fi 6 空间复用组 信道利用率 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]