Abstract: As a result of the widely use of mobile Ad Hoc network (MANET) in formation communication and emergency communication, the high and low frequency routes appear in real situations. In these scenarios, no matter what routing protocol is used, on-demand routing protocols or proactive routing protocols always use fixed maintenance strategy, and obviously none of them can bring their advantages into play. Regarding this scenario, a totally new hybrid routing algorithm is put forward based on Ad Hoc on-demand distance vector (AODV) routing protocol, which makes use of both on-demand and proactive strategies. In this new protocol, the high frequency route is obtained by estimating the traffic flow to maintain the frequently used route through proactive strategy and deal with the low frequency route with on-demand strategy. The qualitative analysis and simulation show that the new hybrid routing algorithm makes the end-to-end packet average transmission delay is reduced by about 20% when compared with AODV protocol.

Key words: ordnance science and technology, mobile Ad Hoc network, hybrid routing protocol, Ad Hoc on-demand distance vector routing