Self-Healing Solution To Heterogeneous Networks Using CoMP

Abstract—Self-healing mechanism is one of the three func-tionalities for self-organizing networks, and it has three major components to be studied by the academic society: fault detection, fault diagnosis and cell outage compensation. In this paper, we study the cell outage compensation function of the self-healing mechanism. In a heterogeneous network environment with densely deployed Femto Base Stations (FBSs), we form a resource allocation problem for FBSs and Femto User Equip-ments (FUEs) operations using Coordinated Multi-Point (CoMP) transmission and reception with joint processing technique. Since the formulated problem is considered as NP hard problem, we propose a heuristic operation scheme to solve the problem. Simulation results show that our proposed operation scheme can improve FUE throughput by up to 30 % compared to other solutions, and it can also prevent the system total rate loss from having the same speed of radio resource loss when failures happen. Index Terms—Self-healing mechanism, heterogeneous network, coordinated multi-point. I