A Novel Distributed Inter-Cell Interference Coordination Scheme Based on Projected Subgradient and Network Flow Optimization
In this paper, the authors propose a novel distributed Inter-Cell Interference Coordination (ICIC) scheme. The proposed scheme, which runs in polynomial time, finds a near-optimum dynamic resource partitioning that maximizes a proportional-fairness criterion in the entire network. The proposed scheme is based on primal-decomposition method, where the problem is divided into a master and multiple sub-problems. The master-problem is solved using projected-subgradient method while each of the sub-problems is solved using minimum-cost network flow optimization. Through extensive simulations of four IMT-advanced scenarios, they quantify the gains achieved using the proposed scheme.