Dynamic Power Control for Maximizing System Throughput in Enterprise Femtocell Networks

Femtocells have been recently developed to increase the capacity and coverage of macrocells in cellular networks. With the deployment of a large number of femtocells in enterprise environment and the random plug-and-play pattern of femtocell base stations, it is a challenging issue to maximize the system throughput in a centralized manner. In this paper we propose a distributed Dynamic Power Control Algorithm (DPCA) for maximizing system throughput of enterprise femtocell networks. Our proposed algorithm dynamically adjusts the transmit power of femtocell base stations according to User Equipment (UE) measurement reports and other collected local information. We conduct simulation experiments based on the model with realistic broadband channel propagation conditions to validate the effectiveness of our algorithm. Numerical results demonstrate that our scheme can achieve up to 40% performance gain in terms of the system throughput in random topology, compared with the fixed power scheme.