Distributed Interference-Aware Power Control in Ultra-Dense Small Cell Networks: A Robust Mean Field Game

Abstract

In ultra-dense small cell networks, interference mitigation is very important due to severe interference. Interference dynamics caused by time-varying environment should be aware and characterized when an interference-aware power control policy is designed to mitigate interference. Meanwhile, interference perception should not be naturally assumed to have complete information with certainty. Generally, it is known that a generic player will react to all the players actions and states in a power control game, which involves huge interference-related information exchange with dynamics and uncertainties. Therefore, to reduce requirements of complete information, we formulate a robust power control mean field game taking the uncertainties of both state dynamics and cost functions into consideration. To achieve the robust power control, we regard the power control problem as a game with players whose individual states are combined by a disturbance term and a Brownian motion. We derive the robust Fokker-Planck-Kolmogorov and Hamilton-Jacobi-Bellman equations, and based on which we propose the robust interference-aware power control algorithm. Simulation results demonstrate the improved performance and the robustness of the proposed algorithm.

Description

Keywords

Interference mitigation, mean field game, power control, ultra-dense small cell networks, robust optimization and control

Citation

Copyright 2018 IEEE Access. Recommended citation: Yang, Chungang, Haoxiang Dai, Jiandong Li, Yue Zhang, and Zhu Han. "Distributed interference-aware power control in ultra-dense small cell networks: a robust mean field game." IEEE Access 6 (2018): 12608-12619. DOI: 10.1109/ACCESS.2018.2799138. URL: https://ieeexplore.ieee.org/abstract/document/8270667. Reproduced in accordance with the original publisher's licensing terms and with permission from the author(s).