Multipath contribution of intermediate nodes in AODV extensions

There are many multipath extensions to AODV (Ad Hoc on-demand Distance Vector) routing protocol in MANETs. These extensions can be categorized into two types based on the concept of utilizing multiple paths in intermediate nodes. The first type utilizes Multiple paths in Intermediate nodes in AODV protocol(MIAODV), and the other utilizes multiple paths only at source and destination nodes (in this paper, this type is called Non-MIAODV or NMIAODV). A comparison study is conducted in this paper for both types of multipath extensions to AODV. The traditional protocol AODV and the mechanism of Route Discovery Process (RDP) in both types MIAODV and NMIAODV is implemented using NS2. The performance is evaluated in terms of three performance metrics; routing packet overhead, packet delivery fraction, and average end-to-end delay.