Dynamic MmWave Channel Reconstruction of MIMO OTA Testing for Handover Scenarios  

作　　者：Nan Ma Jinyu Wang Jianqiao Chen Xiaoqi Qin Ping Zhang Baoling Liu 

机构地区：[1]State Key Laboratory of Network and Switching Technology,Beijing University of Posts and Telecommunications,Beijing 100876,China [2]Department of Broadband Communication,Peng Cheng Laboratory,Shenzhen 518055,China

出　　处：《China Communications》2023年第4期26-40,共15页中国通信（英文版）

基　　金：supported by the National Natural Science Foundation of China(NSFC)under grant U21A20448。

摘　　要：The evaluation of handover performance is essential for ensuring seamless user experience under innovative application scenarios in the fifth generation(5G)and beyond era,including autonomous driving,mobile augmented and virtual reality.However,due to the hardware constrains of a sectored multiprobe anechoic chamber(SMPAC),switching among multiple channel models is of low precision with a high cost in traditional over-the-air(OTA)test solutions.In this paper,we present an efficient and repeatable emulation strategy to reconstruct dynamic millimeter-wave(mm Wave)channels in laboratories for multiple-input multiple-output(MIMO)mobile devices.Firstly,we propose a novel evaluation metric,called average power angular spectrum similarity percentage(APSP),which minimizes the unexpected impact induced by the indefinite condition of adaptive antenna arrays in mm Wave terminals during handover process.Moreover,we propose a partitioned probe configuration strategy by designing a beam directivitybased switching circuit,which enables quick changes of probe configurations in SMPAC.Simulation results demonstrate the effectiveness of the proposed algorithms,thus providing a guideline for the reconstruction of the dynamic channel in different scenarios with resource limitation.

关 键 词：OTA test SMPAC dynamic channel reconstruction cell handover 

分 类 号：TN929.5[电子电信—通信与信息系统]