Abstract:
This paper proposes a Neighborhood Route
Diffusion (NRD) mechanism in which certain selected
entries from a node?s routing table are selectively
diffused to its neighbor nodes. When done efficiently,
this selective route diffusion can create a temporary
envelope of emergency route information to a
destination around all nodes that are actively
forwarding packets to that specific destination. When a
link on a route fails due to mobility, the intermediate
node on the failed link can forward packets to one of
its neighbors which has already been diffused with the
route information for the corresponding destination. It
is shown that in most such occurrences, the packets
can be successfully forwarded all the way to the
destination using such pre-diffused routing
information. This mechanism for salvaging packets
during mobility-initiated link breaks can avoid packet
drops which are usually prevalent in regular mobility
aware routing protocols such as AODV. This paper
presents strategies and network protocols for the
selective NRD process and its associated routing
mechanisms.