Fast Route Repair for Continuous Video Transmission over Mobile Ad Hoc Networks

In mobile ad hoc networks, a great deal of routing overhead and delays are incurred by the route discovery and recovery, which seriously impacts on the continuous real-time video transmission quality. Therefore, we propose a new Fast Route Repair (FRR) algorithm that can perform a rapid route recovery with restrained routing overhead for on-demand routing protocol. In FRR, the Minimum Hop Count Table is maintained by nodes around the route. When the route is interrupted, the route repair region will be restricted around the broken link to decrease the route repair overhead, and several repaired routes can be achieved immediately to recover the packet delivery, but only the shortest one will be chosen finally. FRR can recover the interrupted route rapidly with very low routing overhead, so it is beneficial to improve the real-time video transmission quality. The simulation experiments have been carried out to measure the performance.