Abstract
This paper proposes a local flooding-based on-demand routing protocol for mobile ad hoc networks to reduce the flooding overhead and offers effective alternative paths between the source and destination nodes. The proposed protocol first uses overhearing to identify the one-hop neighbors along the shortest path between the source and destination. Then, it performs periodic local flooding initiated by the destination node, which offers the latest route information along the routing path. This technique only involves one-hop neighbors along the shortest path, with the result that the flooding overhead is significantly reduced and seamless rerouting is possible when the current routing path is either disconnected or outdated. Intensive simulations show that the proposed routing protocol improves the routing performance in terms of data delivery ratio, end-to-end delay, and jitter, and it significantly reduces the control overhead in a wide range of node mobility and density, compared to conventional routing protocols.
Highlights
In a mobile ad hoc network (MANET), the purpose of the routing protocol is to identify the dynamic topology quickly and to provide the shortest routing path between the source and destination nodes at all times
To offer effective multiple alternative paths, the proposed protocol performs periodic local flooding initiated by the destination node, which offers a plurality of routing information along the current routing path
split multipath routing (SMR) and multipath dynamic source routing (DSR) are based on source routing, temporally ordered routing algorithm (TORA) and routing on-demand acyclic multipath (ROAM) are distancevector based, and ad hoc on-demand multipath distance vector (AOMDV), ad hoc on-demand distance vector (AODV)-BR, AODVM, multipath on-demand routing (MORT), and multipath AODV (MP-AODV) are based on AODV [10]–[14]
Summary
In a mobile ad hoc network (MANET), the purpose of the routing protocol is to identify the dynamic topology quickly and to provide the shortest routing path between the source and destination nodes at all times. Considering the various mobility levels and network densities in MANETs, in this paper we propose a new on-demand routing protocol to reduce the typical flooding overhead and to offer effective alternative paths between the source and destination with low control overhead. To offer effective multiple alternative paths, the proposed protocol performs periodic local flooding initiated by the destination node, which offers a plurality of routing information along the current routing path. In this way, the proposed routing protocol maintains the use of the shortest path with high probability in a high-mobility environment, while minimizing the control overhead in a high-density environment.
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