Utility-based Call Admission Control and Load Balancing Strategy in Heterogeneous Wireless Networks

There are many researches on call admission control and load balancing strategy in heterogeneous wireless networks,most of which are under the consideration that the only difference between UMTS and WLAN is the coverage and bandwidth,yet the network characteristics at physical layer and link layer are not taken into account.A novel utility-based call admission control and load balancing strategy is proposed.The proposed strategy utilizes the cross-layer information of both the characteristics at lower layer,and utility functions defined at the application layer.The simulation results show that the proposed strategy maximizes total utility of all the ongoing connections in heterogeneous wireless networks.