Hybrid Routing Protocol For Hierarchy Mesh Networks

With the rapid development of wireless networks, the industry continues to research and launch of communication needs to adapt to the user form of a network, while the Wireless Mesh Networks (WMNs) in recent years has been a high degree of attention and the rapid development of a network technology, in the industrial area is also made significant progress. In comparison with the traditional networks, Wireless Mesh Networks with structural flexibility, self-organization and self-healing, etc., which sparked interest in the reseach. The hybrid routing protocol for hierarchy mesh networks is the focus of this research.This paper first analyzes the structure, characteristics, application, standardization and key technologies of the Wireless Mesh Networks, furthermore, analyzing one of its key technologies which is routing technology. Using OPNET simulation platform to build three networks models——a traditional PMP network, a normal mesh network, a hierarchy mesh network——in the same simulation scenarios. Analysis and comparison of the performance differences of these three kinds of networks, simulation results show that this hierarchy mesh is optimum.Then based on this hierarchy mesh network model, for its characteristics of topology and traffic features, designed a hybrid routing protocol——HWMR. To achieve the optimum performance at a low cost, this hybrid routing protocol is combing the table-drive and on-demand routing protocols, where a table-drive routing protocol is reserved for the fixed backbone network, and an on-demand routing protocol is reserved for mobile access networks. Simulation results show that this hybrid routing protocol has the good applicability in the hierarchy mesh networks.