Effective Video Multicast Over TDMA-Based Dual Homing Wireless Mesh Networks

Abstract

I provide an effective video multicast framework where each multicast receiver has its own video quality demand. Here use time division multiple access (TDMA)-based wireless mesh networks (WMNs) and overlay multicasting. During video multicasting, different relay nodes in the same multicast tree may have different transmission rates. This multicast framework provides effective multicast routing, scheduling, and rate allocation algorithms.  The multicast routing and scheduling is to obtain a minimum length schedule which satisfies given quality demands of receivers. If the schedule  is not feasible even with its minimum length due to the limited number of time slots in the network, rate allocation algorithm adjusts the transmission rates of relay nodes to generate a feasible schedule. To improve survivability of the overlay multicasting, i propose to use dual homing approach, i.e., each peer is connected to the overlay by two separate access links. I introduce several tree construction strategies and conduct simulation experiments to investigate problem of providing survivability to both static and dynamic types of network. Simulation results show that the proposed multicast routing and scheduling algorithms outperform existing schemes.