A New Design of RIS-Aided Hybrid NOMA Offloading in Wireless Powered MEC Networks

Lu Lv; Hao Luo; Long Yang; Zhiguo Ding; Arumugam Nallanathan; Naofal Al-Dhahir; Jian Chen

doi:10.1109/VTC2023-Fall60731.2023.10333590

A New Design of RIS-Aided Hybrid NOMA Offloading in Wireless Powered MEC Networks

Lu Lv
, Hao Luo
, Long Yang
, Zhiguo Ding
, Arumugam Nallanathan
, Naofal Al-Dhahir
, Jian Chen

Xidian University
System-on-Chip Lab
Queen Mary University of London
Erik Jonsson School of Engineering and Computer Science

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

6 Scopus citations

Abstract

We investigate a reconfigurable intelligent surface (RIS)-aided wireless powered mobile edge computing (MEC) network, where a new RIS-aided hybrid non-orthogonal multiple access (NOMA) offloading scheme is proposed to improve the efficiency of both MEC offloading and energy harvesting. A joint optimization framework for the transmit power, time allocation, and RIS phase shifts is developed to minimize the overall energy consumption of the network, subject to the energy causality and MEC offloading constraints. Despite of the optimization problem's non-convexity with highly coupled optimization variables, we devise a computationally-efficient algorithm to solve it iteratively. Simulation results are also provided to facilitate the performance evaluation of the RIS-aided wireless powered MEC, quantify the value of the RIS for energy efficient MEC offloading, and validate the performance gains of the proposed hybrid NOMA offloading over various baseline schemes.

Original language	British English
Title of host publication	2023 IEEE 98th Vehicular Technology Conference, VTC 2023-Fall - Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9798350329285
DOIs	https://doi.org/10.1109/VTC2023-Fall60731.2023.10333590
State	Published - 2023
Event	98th IEEE Vehicular Technology Conference, VTC 2023-Fall - Hong Kong, China Duration: 10 Oct 2023 → 13 Oct 2023

Publication series

Name	IEEE Vehicular Technology Conference
ISSN (Print)	1550-2252

Conference

Conference	98th IEEE Vehicular Technology Conference, VTC 2023-Fall
Country/Territory	China
City	Hong Kong
Period	10/10/23 → 13/10/23

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

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Lv, L., Luo, H., Yang, L., Ding, Z., Nallanathan, A., Al-Dhahir, N., & Chen, J. (2023). A New Design of RIS-Aided Hybrid NOMA Offloading in Wireless Powered MEC Networks. In 2023 IEEE 98th Vehicular Technology Conference, VTC 2023-Fall - Proceedings (IEEE Vehicular Technology Conference). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/VTC2023-Fall60731.2023.10333590

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abstract = "We investigate a reconfigurable intelligent surface (RIS)-aided wireless powered mobile edge computing (MEC) network, where a new RIS-aided hybrid non-orthogonal multiple access (NOMA) offloading scheme is proposed to improve the efficiency of both MEC offloading and energy harvesting. A joint optimization framework for the transmit power, time allocation, and RIS phase shifts is developed to minimize the overall energy consumption of the network, subject to the energy causality and MEC offloading constraints. Despite of the optimization problem's non-convexity with highly coupled optimization variables, we devise a computationally-efficient algorithm to solve it iteratively. Simulation results are also provided to facilitate the performance evaluation of the RIS-aided wireless powered MEC, quantify the value of the RIS for energy efficient MEC offloading, and validate the performance gains of the proposed hybrid NOMA offloading over various baseline schemes.",

author = "Lu Lv and Hao Luo and Long Yang and Zhiguo Ding and Arumugam Nallanathan and Naofal Al-Dhahir and Jian Chen",

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Lv, L, Luo, H, Yang, L, Ding, Z, Nallanathan, A, Al-Dhahir, N & Chen, J 2023, A New Design of RIS-Aided Hybrid NOMA Offloading in Wireless Powered MEC Networks. in 2023 IEEE 98th Vehicular Technology Conference, VTC 2023-Fall - Proceedings. IEEE Vehicular Technology Conference, Institute of Electrical and Electronics Engineers Inc., 98th IEEE Vehicular Technology Conference, VTC 2023-Fall, Hong Kong, China, 10/10/23. https://doi.org/10.1109/VTC2023-Fall60731.2023.10333590

A New Design of RIS-Aided Hybrid NOMA Offloading in Wireless Powered MEC Networks. / Lv, Lu; Luo, Hao; Yang, Long et al.
2023 IEEE 98th Vehicular Technology Conference, VTC 2023-Fall - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2023. (IEEE Vehicular Technology Conference).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Al-Dhahir, Naofal

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AB - We investigate a reconfigurable intelligent surface (RIS)-aided wireless powered mobile edge computing (MEC) network, where a new RIS-aided hybrid non-orthogonal multiple access (NOMA) offloading scheme is proposed to improve the efficiency of both MEC offloading and energy harvesting. A joint optimization framework for the transmit power, time allocation, and RIS phase shifts is developed to minimize the overall energy consumption of the network, subject to the energy causality and MEC offloading constraints. Despite of the optimization problem's non-convexity with highly coupled optimization variables, we devise a computationally-efficient algorithm to solve it iteratively. Simulation results are also provided to facilitate the performance evaluation of the RIS-aided wireless powered MEC, quantify the value of the RIS for energy efficient MEC offloading, and validate the performance gains of the proposed hybrid NOMA offloading over various baseline schemes.

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Lv L, Luo H, Yang L, Ding Z, Nallanathan A, Al-Dhahir N et al. A New Design of RIS-Aided Hybrid NOMA Offloading in Wireless Powered MEC Networks. In 2023 IEEE 98th Vehicular Technology Conference, VTC 2023-Fall - Proceedings. Institute of Electrical and Electronics Engineers Inc. 2023. (IEEE Vehicular Technology Conference). doi: 10.1109/VTC2023-Fall60731.2023.10333590

A New Design of RIS-Aided Hybrid NOMA Offloading in Wireless Powered MEC Networks

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