1. Energy Efficient User Association, Resource Allocation and Caching Deployment in Fog Radio Access Networks.
- Author
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Liu, Xiangnan, Zhang, Haijun, Long, Keping, Nallanathan, Arumugam, and Leung, Victor C. M.
- Subjects
RADIO access networks ,RESOURCE allocation ,WIRELESS communications ,MULTICASTING (Computer networks) ,NETWORK performance ,ENERGY consumption - Abstract
The heterogeneous fog radio access networks (Fog-RAN), the integration of fog computing, and traditional heterogeneous radio access networks can be implemented through the next-generation wireless communication networks. However, most of the solutions are limited to the spectrum efficiency optimization, and cross-tier interference existing in the fog access points (F-APs) could affect the network performance seriously. In this paper, the user association, resource allocation (including bandwidth and power), and caching deployment are investigated in the heterogeneous Fog-RAN to consider energy efficiency and cross-tier interference mitigation. Specifically, the user association, resource allocation, and caching strategy are formulated as a non-convex optimization problem and then transformed into a convex problem, which can be solved by a proposed algorithm based on the concept of the alternating direction method of multipliers (ADMM). Then an ADMM-based algorithm is proposed to enhance the energy efficiency of the Fog-RAN. Compared with the current solutions, simulation results illustrate the proposed algorithm’s convergence and effectiveness. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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