Jiang, X., Liang, K., Chu, X. orcid.org/0000-0003-1863-6149 et al. (2 more authors) (2023) Multiplexing eMBB and URLLC in wireless powered communication networks: a deep reinforcement learning-based approach. IEEE Wireless Communications Letters, 12 (10). pp. 1716-1720. ISSN 2162-2337
Abstract
This paper investigates the multiplexing of enhanced mobile broadband (eMBB) and ultra-reliable low-latency communications (URLLC) services in a wireless powered communication network, where a hybrid access point coordinates the wireless energy transfer (WET) to users and receives information from them. The preemptive puncturing is adopted to multiplex URLLC traffic onto eMBB transmission. Apart from the energy used for wireless information transmission (WIT), the rest energy in user’s battery is reserved to avoid insufficient energy for future WIT. The problem is formulated to jointly allocate subcarriers, time, and energy to maximize the uplink eMBB sum rate under the constraints of URLLC latency, radio frequency to direct current (RF/DC) sensitivity, user’s battery capacity, and subcarriers availability. We propose a deep reinforcement learning-based approach named mixed deep deterministic policy gradient (Mixed-DDPG), which decomposes the optimization problem into a discrete subproblem for subcarriers allocation and a continuous subproblem for time and energy allocation, and solves them alternately. Numerical results show that the proposed algorithm achieves a higher eMBB sum rate than the existing schemes.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2023 The Authors. Except as otherwise noted, this author-accepted version of a journal article published in IEEE Wireless Communications Letters is made available via the University of Sheffield Research Publications and Copyright Policy under the terms of the Creative Commons Attribution 4.0 International License (CC-BY 4.0), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ |
Keywords: | eMBB; URLLC; wireless powered communication; preemptive puncturing; RF/DC sensitivity |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) |
Funding Information: | Funder Grant number EUROPEAN COMMISSION - HORIZON 2020 778305 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 30 Jun 2023 09:52 |
Last Modified: | 04 Oct 2024 11:26 |
Status: | Published |
Publisher: | Institute of Electrical and Electronics Engineers |
Refereed: | Yes |
Identification Number: | 10.1109/LWC.2023.3290040 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:200798 |