中文引用格式： 張琪，白曉宇. 基于3GPP協議的毫米波波束跟蹤方案設計[J]. 電子技術應用，2023，49(12)：38-44.
英文引用格式： Zhang Qi，Bai Xiaoyu. 3GPP protocol based beam tracking scheme design for millimeter wave communications[J]. Application of Electronic Technique，2023，49(12)：38-44.

3GPP protocol based beam tracking scheme design for millimeter wave communications

Abstract： Beam tracking is one of key technologies of millimeter wave communication systems for maintaining a stable radio link. Based on the downlink beam management procedure P1,P2,P3 and uplink beam management procedure U1,U2,U3 specified in 3GPP (3rd Generation Partnership Project) protocols, this paper analyzes and compares the resource occupation rate and beam failure probability of different beam tracking schemes. Analysis and simulation results show that the P2+P3 scheme is optimal in the sense of average resource occupation rate as the downlink resource is usually abundant in general, whereas, in the sense of beam failure probability, the U2+P3 scheme is optimal since it is free of power information feedback. In practice, an appropriate beam tracking scheme can be chosen according to the special communication requirements.

Key words : millimeter wave；beam tracking；resource occupation rate；beam tracking probability