QoS Routing and Scheduling in TDMA Based Wireless Mesh Backhaul Networks

With the advance of wireless technologies, wireless mesh backhaul networks (WMBNs) are emerging an alternative to conventional wired backbones for metropolitan areas. As real-time applications (e.g., voice over IP and video streaming) rapidly grow, provisioning quality-of-service (QoS) guarantees is one of the most important issues for WMBNs. In this paper the QoS problem for routing and scheduling in TDMA-based WMBNs was considered. An integrated routing and scheduling mechanism was proposed to provides QoS guarantees to real-time services with unrestricted topologies for TDMA-based WMBNs. A linear programming optimization is devised to solve the amount of non-collision bandwidth for a path according to the available resource and the interference. A simulation model is developed to investigate the performance of the proposed mechanism. Through the developed simulation, a series of experiments are conducted to show the capabilities of the proposed mechanism.