Latency optimization for multi-user NOMA-MEC offloading using reinforcement learning

Peitong Yang, Lixin Li, Wei Liang, Huisheng Zhang, Zhiguo Ding

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

33 Scopus citations

Abstract

Both non-orthogonal multiple access (NOMA) and mobile edge computing (MEC) have been recognized as important techniques in future wireless networks, and the combination of them has received attention recently. It has been demonstrated that in a dual-user scenario, the use of the NOMA can effectively reduce the latency and energy consumption of MEC offloading. However, the scenario of multiple users needs to be considered further, which is more practical. In this paper, we consider a NOMA-MEC system with multiple users and single MEC server, and investigate the problem of minimizing offloading latency. Through using the Reinforcement learning (RL) algorithm Deep Q-network (DQN) to select the users who offload at the same time without knowing the actions of other users in advance, we will obtain the optimal user combination state and minimize system offloading latency. Simulation results show that the proposed method can significantly reduce the system offloading latency in the multi-user scenario of applying NOMA to MEC.

Original languageBritish English
Title of host publication2019 28th Wireless and Optical Communications Conference, WOCC 2019 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728106601
DOIs
StatePublished - May 2019
Event28th Wireless and Optical Communications Conference, WOCC 2019 - Beijing, China
Duration: 9 May 201910 May 2019

Publication series

Name2019 28th Wireless and Optical Communications Conference, WOCC 2019 - Proceedings

Conference

Conference28th Wireless and Optical Communications Conference, WOCC 2019
Country/TerritoryChina
CityBeijing
Period9/05/1910/05/19

Keywords

  • Deep Q-network
  • Mobile Edge Computing
  • Non-orthogonal Multiple Access
  • Offloading Latency

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