Energy Consumption Minimization with Task Offloading in Multi-RIS-Assisted IoT-Enabled Mobile Edge Computing
Liu, Tong Zhang, Shilong Chen, Jinhua Yu, Keping Mumtaz, Shahid Guizani, Mohsen
Liu, Tong
Zhang, Shilong
Chen, Jinhua
Yu, Keping
Mumtaz, Shahid
Guizani, Mohsen
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Department
Machine Learning
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Conference proceeding
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Abstract
Mobile Edge Computing (MEC) is crucial for enabling computation-intensive applications in Internet of Things (IoT) networks where low-latency and energy-efficient processing are essential. The integration of multiple Reconfigurable Intelligent Surfaces (RIS) enhances the communication efficiency between IoT devices and MEC servers by dynamically adjusting signal propagation. This paper addresses an energy minimization problem in a multi-RIS-assisted MEC system for IoT network, aiming to reduce the total energy consumption while meeting latency and resource constraints. Our proposed framework innovatively combines multi-RIS path selection with edge computing task offloading, and incorporates a dynamic RIS activation strategy for multi-user scenarios. To tackle this mixed-integer non-linear programming problem, we develop an effective decomposition algorithm based on Block Coordinate Descent (BCD). The problem is iteratively solved through three subproblems: RIS phase shift optimization, path selection and RIS activation, offloading ratio and power allocation. Simulation results show that our approach achieves up to 26% energy saving compared to the single RIS scheme, demonstrating the significant potential of multi-RIS integration in energy-efficient IoT-MEC systems.
Citation
T. Liu, S. Zhang, J. Chen, K. Yu, S. Mumtaz, M. Guizani, "Energy Consumption Minimization with Task Offloading in Multi-RIS-Assisted IoT-Enabled Mobile Edge Computing," 2025, pp. 1-6.
Source
2025 IEEE 36th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)
Conference
2025 IEEE 36th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)
Keywords
40 Engineering, 4006 Communications Engineering, 46 Information and Computing Sciences, 4605 Data Management and Data Science, 4606 Distributed Computing and Systems Software, 7 Affordable and Clean Energy
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Source
2025 IEEE 36th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)
Publisher
IEEE