Low-Latency and Secure Computation Offloading Assisted by Hybrid Relay-Reflecting Intelligent Surface
Paper in proceeding, 2021

Recently, the hybrid relay-reflecting intelligent surface (HRRIS) has been introduced as a spectral-and energy-efficient architecture to assist wireless communication systems. In the HRRIS, a single or few active relay elements are deployed along with a large number of passive reflecting elements, allowing it to not only reflect but also amplify the incident signals. In this work, we investigate the potential of the HRRIS in aiding the computation offloading in a single-user mobile edge computing system. The objective is to minimize the offloading latency while ensuring the secrecy of user data against a malicious eavesdropper. We develop efficient solutions to this latency minimization problem based on alternating optimization. Through numerical results, we show that the deployment of the HRRIS can result in a considerable reduction in latency. Furthermore, the latency reduction gain offered by the HRRIS is much more significant than that of the conventional reconfigurable intelligent surface (RIS).


Khac-Hoang Ngo

Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks

Nhan Thanh Nguyen

University of Oulu

Thinh Quang Dinh

University of Oulu

Trong Minh Hoang

Fossil Group Inc

Markku Juntti

Posts and Telecommunications Institute of Technology

International Conference on Advanced Technologies for Communications

21621039 (ISSN) 21621020 (eISSN)

Vol. 2021-October 306-311
9781665433792 (ISBN)

2021 International Conference on Advanced Technologies for Communications, ATC 2021
Ho Chi Minh City, Vietnam,

Subject Categories

Computer Engineering


Communication Systems



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2/1/2022 1