01782nas a2200217   4500008004100000245008100041210006900122260000900191300001400200490000700214520110400221653000901325653001301334653002401347653002601371100001101397700001401408700001101422700001401433856011701447       2012                        eng d00aLow overhead geometric on-demand routing protocol for mobile ad hoc networks0 aLow overhead geometric ondemand routing protocol for mobile ad h  c2012  a114 - 1200 v103 aAt present, Mobile Ad Hoc Networks (MANET) have become a hot research field, in view that the mobile nodes have the characteristics of mobility, limited energy, limited storage space and so on. Thus to design a simple and high-efficiency routing protocol is an important issue. AODV routing protocol can resolve the routing problem of Mobile Ad Hoc Networks, but it still has many shortcomings, such that it uses flooding method to broadcast messages and finds the route, which cause heavy network overhead and other problems. In this paper, in order to resolve the low efficiency of simple flooding, we first analyze AODV routing protocol briefly. After that we propose an improved routing broadcast algorithm-GAODV, which aims to restrict the forwarding nodes within a local area through the geometrical routing, and prevent from flooding the control packet in the whole network. Simulation results show that the G-AODV effectively reduces network overhead and the end to end delay. Moreover, it also significantly improves the effectiveness of protocol and the overall performance of the network.10aAODV10aFlooding10aGeometrical routing10aMobile ad hoc network1 aSu, C.1 aZheng, L.1 aSi, X.1 aShang, F.  uhttp://www.scopus.com/inward/record.url?eid=2-s2.0-84866448629&partnerID=40&md5=1ddb21882f2996c7fdd5e7fbfd1511cb