Secure computation offloading assisted by intelligent reflection surface for mobile edge computing network

As an novel paradigm, computation offloading in the mobile edge computing (MEC) system can effectively support the resource-intensive applications for the mobile devices (MD) equipped with limited computing capability. However, the hostile radio transmission and data leakage during the offloading pr...

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Bibliographic Details
Published in:Physical communication Vol. 57; p. 102003
Main Authors: Chen, Xue, Xu, Hongbo, Zhang, Guoping, Chen, Yun, Li, Ruijie
Format: Journal Article
Language:English
Published: Elsevier B.V 01.04.2023
Subjects:
Block coordinate descent
Communication design
Computation setting
Intelligent reflecting surface
Mobile edge computing
Secure offloading
Communication design
Intelligent reflecting surface
Computation setting
Mobile edge computing
Secure offloading
Block coordinate descent
ISSN:1874-4907, 1876-3219
Online Access:Get full text
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Summary:As an novel paradigm, computation offloading in the mobile edge computing (MEC) system can effectively support the resource-intensive applications for the mobile devices (MD) equipped with limited computing capability. However, the hostile radio transmission and data leakage during the offloading process may erode the MEC system’s potential. To tackle these hindrances, we investigate an IRS-assisted secure MEC system with eavesdroppers, where the intelligent reflecting surface (IRS) is deployed to enhance the communication between the MD and the AP equipped with edge servers and the malicious eavesdroppers may attack the wireless data offloaded by MD. The MD opt for offloading part of the tasks to the edge server for execution to support the computation-intensive applications. Moreover, the relevant latency minimization problem is formulated by optimizing the offloading ratio, the allocation of edge server computing capability, the multiple-user-detection (MUD) matrix and the IRS phase shift parameters, subject to the constraints of edge computation resource and practical IRS phase shifts. Then, the original problem is decouple into two subproblem, and the computing and communication subproblems are alternatively optimized by block coordinate descent (BCD) method with low complexity. Finally, simulation results demonstrate that the proposed scheme can significantly enhance the performance of secure offloading in the MEC system.
ISSN:1874-4907
1876-3219
DOI:10.1016/j.phycom.2023.102003