Delay Minimization for RIS-NOMA Assisted MEC Networks With SWIPT

被引：4

作者：

Xia, Lu ^{[1
]}

Yang, Zheng ^{[1
]}

Cui, Jingjing ^{[2
]}

Zhou, Fuhui ^{[3
]}

Wu, Yi ^{[1
]}

Dong, Zhicheng ^{[4
]}

Ding, Zhiguo ^{[5
]}

机构：

[1] Fujian Normal Univ, Fujian Prov Engn Technol Res Ctr Photoelect Sensi, Fuzhou 350007, Peoples R China

[2] Univ Southampton, Sch Elect & Comp Sci, Southampton SO17 1BJ, Hants, England

[3] Nanjing Univ Aeronaut & Astronaut, Coll Elect & Informat Engn, Nanjing 210006, Peoples R China

[4] Tibet Univ, Sch Engn, Lhasa 85000, Peoples R China

[5] Univ Manchester, Sch Elect & Elect Engn, Manchester M13 9PL, Lancs, England

来源：

2022 IEEE GLOBAL COMMUNICATIONS CONFERENCE (GLOBECOM 2022) | 2022年

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1109/GLOBECOM48099.2022.10001448

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

In this paper, we study an uplink reconfigurable intelligent surfaces-non-orthogonal multiple access (RIS-NOMA) assisted mobile edge computing (MEC) network with simultaneous wireless information and power transfer (SWIPT), where the users want to offload their computing tasks to the BS via a RIS and a relay based on the SWIPT technique. The goal of the paper is to minimize the delay concerning the computing tasks of the users by jointly optimizing the power allocation ratio, the phase shift matrix of the RIS, the offloading task ratio, and the offloading transmit power. For solving the challenging optimization problem, we conceive a low-complexity algorithm by optimizing two subproblems separately, based on the penalty method as well as the successive convex approximation. Simulation results demonstrate that the proposed RIS-NOMA assisted MEC network with SWIPT outperforms both the conventional RIS-NOMA assisted MEC network without SWIPT and the RIS-orthogonal multiple access assisted MEC network.

引用

页码：4631 / 4636

页数：6