Energy Efficient Dual User Association for Large Scale IRS-Aided mmWave Communication Networks  

作　　者：Chen Guolin Deng Yiqin Huang Xiaoxia Fang Yuguang 

机构地区：[1]School of Electronics and Communication Engineering,Sun Yat-sen University,Shenzhen 518107,China [2]School of Control Science and Engineering,Shandong University,Jinan 250100,China [3]Department of Computer Science,City University of Hong Kong,Hong Kong 999077,China

出　　处：《China Communications》2025年第1期182-195,共14页中国通信(英文版)

基　　金：supported by the National Natural Science Foundation of China under grant U22A2003 and 62271515;Shenzhen Science and Technology Program under grant ZDSYS20210623091807023;supported by the National Natural Science Foundation of China under Grant 62301300.

摘　　要：The deployment of multiple intelligent reflecting surfaces(IRSs)in blockage-prone millimeter wave(mmWave)communication networks have garnered considerable attention lately.Despite the remarkably low circuit power consumption per IRS element,the aggregate energy consumption becomes substantial if all elements of an IRS are turned on given a considerable number of IRSs,resulting in lower overall energy efficiency(EE).To tackle this challenge,we propose a flexible and efficient approach that individually controls the status of each IRS element.Specifically,the network EE is maximized by jointly optimizing the associations of base stations(BSs)and user equipments(UEs),transmit beamforming,phase shifts of IRS elements,and the associations of individual IRS elements and UEs.The problem is efficiently addressed in two phases.First,the Gale-Shapley algorithm is applied for BS-UE association,followed by a block coordinate descent-based algorithm that iteratively solves the subproblems related to active beamforming,phase shifts,and element-UE associations.To reduce the tremendous dimensionality of optimization variables introduced by element-UE associations in large-scale IRS networks,we introduce an efficient algorithm to solve the associations between IRS elements and UEs.Numerical results show that the proposed elementwise control scheme improves EE by 34.24% compared to the network with IRS-all-on scheme.

关 键 词：energy efficiency intelligent reflecting surface millimeter-wave communication 

分 类 号：TN929.5[电子电信—通信与信息系统]