Optimizing the Usage of Bandwidth in Heterogeneous Wireless Networks Using CTSP Mechanism

The main objective of this paper is to reduce the total bandwidth consumption and to share the unused bandwidth in wireless networks. In this paper we use a mechanism to select the cells and wireless technologies for video multicasting. This mechanism formulate cell and technology selection problem (CTSP) as an optimization problem CTSP. To solve this problem we use Legrangian based distributed algorithm. In this paper we propose a new hierarchical bandwidth sharing based on the auction theory. In our proposed model, Wi-Fi and UMTS serve the WLAN APs as primary networks, sharing their licensed spectrum as double auction. Simulation results show the proposed scheme could improve the utility of PNs’ spectrum, and provide good services to the WLAN users.