Title :
Energy efficient power optimization in two-tier femtocell networks with interference pricing
Author :
Deli Liu ; Wei Zheng ; Haijun Zhang ; Wenmin Ma ; Xiangming Wen
Author_Institution :
Beijing Key Lab. of Network Syst. Archit. & Convergence, Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
With the mass deployment of femtocells, serious cross-tier interference may be caused to the macrocells, together with large amounts of energy consumption. In this paper, the power control problem for the co-channel deployed femtocells is investigated. We first model the uplink power control problem as a non-cooperative game, where co-channel interference is taken into account in maximizing the energy-aware utility. By introducing a convex pricing function of the cross-tier interference, Pareto improvement can be obtained. Furthermore, based on the non-cooperative game, we devise a distributed power allocation algorithm together with an optimal price seeking algorithm. Simulation results show that the proposed algorithm can improve user utilities significantly, compared with existing power control algorithms.
Keywords :
cochannel interference; energy conservation; femtocellular radio; game theory; power control; Pareto improvement; co-channel deployed femtocells; cochannel interference; convex pricing function; cross-tier interference; distributed power allocation algorithm; energy consumption; energy efficient power optimization; energy-aware utility; interference pricing; macrocells; noncooperative game; optimal price seeking algorithm; two-tier femtocell networks; uplink power control problem; Pricing; Uplink; Pareto improvement; femtocell; non-cooperative game; power control; pricing;
Conference_Titel :
Computing and Networking Technology (ICCNT), 2012 8th International Conference on
Conference_Location :
Gueongju
Print_ISBN :
978-1-4673-1326-1