A Review on AODV Based Backup Routing Schemes in Mobile Ad Hoc Network

Mobile ad hoc network (MANET) is characterized as a dynamic, multi-hop wireless self-organized distributed ad hoc network. Because of node mobility and power limitation, the network topology changes frequently which leads to path breakage. Hence a dynamic routing protocol is required for ad hoc networks to function properly. Reactive on -demand routing protocols becomes very popular because it established routes only when they are needed but most of them use single route and do not have backup routes to transmit the packet during failure. Therefore, some on-demand protocols with alternate path has been proposed to improve the performance in ad hoc network. In this paper, we discuss different schemes based on AODV protocol which provide multiple alternate routes by using the broadcast nature of wireless nodes and compare their performance on basis of various parameters. Keywords— MANET, alternate routes, AODV-BR, AODV-ABR, AODV-ABL, AODV-GBR, AODV-BRL