Reactive routing with a realistic physical layer for
ad hoc and sensor wireless networks
Abstract: In
reactive routing protocols, nodes follow the flooding based route discovery
procedure to find the route to the destination. During the route discovery
process, each node receiving the route message will retransmit the message
exactly once. A distance neighbor may accidentally receive the only route
discovery message and use it to announce a new route, although in reality it is
not able to provide such a good important neighbor and therefore the route may
not be found. Overall, the constructed route may be far from the optimal. No
existing route discovery schemes apply retransmission more than once. Based on
a realistic physical layer model, two route discovery schemes are proposed:
n-retransmission and counter-based n-retransmission, which retransmit route
request message more than once. Experiments showed us promising results.