Abstract:

Ondemand distance vector routing protocol AODV is one of the research hotspots in Ad hoc Networks. To ensure stable data transmission, a link available time algorithm of AODV is proposed, which increases a parameter of link available time in the route request packet and a parameter of routing path available time in the route reply packet. In the process of routing maintenance, intermediate nodes start the repair process before the link really fails. Compared with the traditional algorithm, the results obtained in NS2 simulation platform show that the improved AODV protocol enhances the reliability of the routing, improves packet delivery ratio and reduces the average endtoend transmission delay.

Key words: Ad Hoc network;AODV;link available time;link dangerous time