Full Text:   <1438>

Summary:  <357>

CLC number: TN929.5

On-line Access: 2024-08-27

Received: 2023-10-17

Revision Accepted: 2024-05-08

Crosschecked: 2023-09-14

Cited: 0

Clicked: 2158

Citations:  Bibtex RefMan EndNote GB/T7714

 ORCID:

Kang YAN

https://orcid.org/0000-0002-0258-0817

Tao WU

https://orcid.org/0000-0003-1344-835X

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Article info.
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Frontiers of Information Technology & Electronic Engineering  2024 Vol.25 No.5 P.645-663

http://doi.org/10.1631/FITEE.2300181


A survey of energy-efficient strategies for federated learning in mobile edge computing


Author(s):  Kang YAN, Nina SHU, Tao WU, Chunsheng LIU, Panlong YANG

Affiliation(s):  School of Electronic Engineering, National University of Defense Technology, Hefei 230009, China; more

Corresponding email(s):   wutao20@nudt.edu.cn

Key Words:  Mobile edge computing, Federated learning, Energy-efficient



Abstract: 
With the booming development of fifth-generation network technology and Internet of Things, the number of end-user devices (EDs) and diverse applications is surging, resulting in massive data generated at the edge of networks. To process these data efficiently, the innovative mobile edge computing (MEC) framework has emerged to guarantee low latency and enable efficient computing close to the user traffic. Recently, federated learning (FL) has demonstrated its empirical success in edge computing due to its privacy-preserving advantages. Thus, it becomes a promising solution for analyzing and processing distributed data on EDs in various machine learning tasks, which are the major workloads in MEC. Unfortunately, EDs are typically powered by batteries with limited capacity, which brings challenges when performing energy-intensive FL tasks. To address these challenges, many strategies have been proposed to save energy in FL. Considering the absence of a survey that thoroughly summarizes and classifies these strategies, in this paper, we provide a comprehensive survey of recent advances in energy-efficient strategies for FL in MEC. Specifically, we first introduce the system model and energy consumption models in FL, in terms of computation and communication. Then we analyze the challenges regarding improving energy efficiency and summarize the energy-efficient strategies from three perspectives: learning-based, resource allocation, and client selection. We conduct a detailed analysis of these strategies, comparing their advantages and disadvantages. Additionally, we visually illustrate the impact of these strategies on the performance of FL by showcasing experimental results. Finally, several potential future research directions for energy-efficient FL are discussed.

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