Robustness-supported user association and small cell switching ON/OFF strategies in 5G mm-wave networks  

作　　者：Ma Zhongyu Li Bo Yan Zhongjiang Yang Mao 马忠彧;Li Bo;Yan Zhongjiang;Yang Mao(School of Electronics and Information,Northwestern Polytechnical University,Xi’an 710129,P.R.China;School of Electronic Information Engineering,Lanzhou Institute of Technology,Lanzhou 730050,P.R.China)

机构地区：[1]School of Electronics and Information,Northwestern Polytechnical University,Xi'an 710129,P.R.China [2]School of Electronic Information Engineering,Lanzhou Institute of Technology,Lanzhou 730050,P.R.China

出　　处：《High Technology Letters》2020年第1期8-16,共9页高技术通讯（英文版）

基　　金：Supported by the National Natural Science Foundations of China(No.61771392,61771390,61871322,61501373,61271279);the National High Tochnology Research and Development Program of China(No.2014AA01A707,2015AA01A704);the Science and Technology on Avionics Integration Laboratory(No.20185553035)。

摘　　要：The problem of robustness-supported user association and small cell station(SCS) switching ON/OFF strategies in 5G millimeter wave(mm-wave) networks is investigated, where the robustness of access links is ensured and the number of active SCSs is minimized for the reduction of the aggregation power consumption. Firstly, the problem is formulated as an integer programming(IP) problem. Then the problem is proved as a NP-hard problem by means of the simplification into the minimum dominant set(MDS), which is a NP-hard problem and is intractable to be solved in polynomial time. Secondly, a greedy-idea-based heuristic algorithm(GIHA) is proposed under the consideration of the complexity of the original optimization problem. Finally, superiorities of GIHA are demonstrated with the extensive simulations in 60 GHz mm-wave ultra-dense network in terms of access robustness and aggregate power consumption.

关 键 词：MILLIMETER wave(mm-wave) USER ALLOCATION minimum dominating set robustness-supported 

分 类 号：TN929.5[电子电信—通信与信息系统]