Lyapunov Optimization-based User Scheduling and Beamforming Design for uRLLC Systems
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所属单位：School of Computer Science and Information Engineering, Hefei University of Technology
发表刊物：2023 IEEE Wireless Communications and Networking Conference (WCNC)
项目来源：the National Natural Science Foundation of China under Grants 61971176 and 61901156, Anhui Provincia
关键字：Finite blocklength, user scheduling and beam-forming, Lyapunov optimization
摘要：Finite blocklength (FBL) transmission is a promising technique to meet the stringent delay and reliability requirements. In this paper, based on the FBL transmission mode, we formulate a joint user scheduling and beamforming (USBF) optimization problem with maximizing the system utility related to the long-term average rate, which considers variable user numbers and statistical wireless channels. To address the long-term optimization problem, by utilizing the Lyapunov optimization method, it can be transformed into the admission control subproblem and the joint USBF subproblem with the instantaneous channel state information (CSI) of each user. Then, an iteration method with successive convex approximation (SCA) is presented to solve the transformed instantaneous optimization problem. The simulation results confirm that the proposed scheme can achieve a significant performance gain on the premise of meeting the requirements of uRLLC.
合写作者：Weidong Liu,Wei Huang
第一作者：Caihong Kai
论文类型：论文集
学科门类：工学
文献类型：C
页面范围：1-6
ISSN号：1558-2612
是否译文：否
发表时间：2023-03-26
收录刊物：EI