An AODV-Based Backup Routing Mechanism for Time-Critical in Wireless Mesh Networks

The wireless network technology is fast growing in recent years, make the mobile network equipment very general. So the transmission quality is more and more important. But the environmental change of the network is fast, the route may blocked and the route discover will be resumed. The common routing Protocol is AODV (Ad hoc On-Demand Distance Vector Routing) in IEEE802.11. Because route discover uses the broadcast protocol, the broadcast storm will happen in this. Cause the resources of the network to waste, contention fierceness and package collision among the nodes. If take place when the multimedia data transmission, service quality will drop seriously. In order to improve this, the paper proposes utilizing the node and its neighbor node to be set up Alternate Path. Make the data resume transmitting immediately, avoid the route discover then improve the service quality.