Resource Allocation Schemes in Integrated Heterogeneous Wireless and Mobile Networks

Wireless and mobile networks have experienced a great success in the past few years. However, any single type of wireless and mobile network cannot meet all types of service requirements. For example, no single type of existing wireless and mobile network can provide both wide coverage and high bandwidth services. In order to provide more comprehensive services, an integrated heterogeneous wireless and mobile network is introduced. It consists of several different types of wireless and mobile networks and can provide more connection options for mobile users than a single type of wireless and mobile network. However, the integrated heterogeneous wireless and mobile network imposes great challenges in many perspectives. One of these challenges is to efficiently allocate resource for supporting multiple traffic (voice, video, data, and etc). Although a lot of resource allocation schemes have been proposed, they mostly focus on supporting multiple traffic in single type of network or supporting a single type of traffic in an integrated heterogeneous wireless and mobile network. Therefore, they may not be suitable for supporting multiple traffic in an integrated heterogeneous wireless and mobile network. In this paper, we propose two preemption-based resource allocation schemes to support multiple traffic in an integrated heterogeneous wireless and mobile network. In both schemes, we allow different types of traffic to have different priorities and higher priority traffic can preempt lower priority traffic. We evaluate the system performances of our proposed schemes by using extensive simulations. The simulation results show that the proposed schemes can significantly improve the system performances.