Architecture design for heterogeneous multimedia mesh networks and research on cross-layer QoS routing algorithm

According to the heterogeneous characteristics of wireless mesh networks (WMNs) and the QoS requirements of multimedia business, we designed a QoS adaptive architecture for WMNs, which is cross-domain, cross-layer and cross-node. Furthermore, this architecture was mathematically described by a bi-level programming model. Based on this mathematical model, we proposed an ant colony optimization based routing algorithm. Simulation results show that the bi-level programming model can fully optimize various QoS parameters of paths;the proposed routing algorithm, which has both advantages of low complexity and fast convergence speed, can converge to the optimal solution of bi-level programming model.