Wi-Fi 7多链路高能效联合传输优化策略  

Optimization strategy of multi-link energy efficient joint transmission of Wi-Fi 7

作　　者：戴林燕 方旭明[1] 何蓉[1] DAI Linyan;FANG Xuming;HE Rong(School of Information Science and Technology,Southwest Jiaotong University,Chengdu 611756,China)

机构地区：[1]西南交通大学信息科学与技术学院,四川成都611756

出　　处：《物联网学报》2023年第3期42-52,共11页Chinese Journal on Internet of Things

基　　金：国家自然科学基金资助项目(No.62071393);四川省应用基础研究项目(No.2020YJ0218)。

摘　　要：下一代Wi-Fi 7协议多链路非同步传输与接收模式下,多链路设备(MLD,multi-link device)在各个链路的传输结束时间需要对齐,可能需要进行数据填充(padding),从而导致频谱资源和能量的浪费。提出了一种MLD高能效传输算法,在满足数据传输时延限制的前提下,提高MLD站点(STA,station)总能效。所提算法分别从链路数据分发比例、通信资源与STA发送功率3个方面进行优化。仿真结果显示,所提算法在保证数据传输时延限制的前提下,通过减少padding数据降低能耗,使系统传输能效相较于基线方案提升约150%。In the multi-link non-simultaneous transmit and receive mode of next-generation Wi-Fi 7 protocol,the transmission ending time of multi-link device(MLD) needs to be aligned on each link,which may require data padding,resulting in the waste of spectrum resources and transmission energy consumption.A high energy efficient MLD transmission algorithm was proposed to improve the total energy efficiency of MLD station(STA) on the premise of meeting the data transmission delay limit.The proposed algorithm was optimized from the following three aspects:link data distribution ratio,communication resource allocation and STA transmission power.Simulation results show that the proposed algorithm can reduce energy consumption by reducing padding data on the premise of guaranteeing the delay limit of data transmission,and the transmission energy efficiency of the system is increased by about 150% compared with that of the baseline scheme.

关 键 词：Wi-Fi 7 多链路 能效 数据填充 粒子群优化 

分 类 号：TN929.5[电子电信—通信与信息系统]