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Several simulation and real world studies show that
certain ad hoc routing protocols perform better than others under
specific mobility and traffic patterns. In order to exploit this
phenomena, we propose a novel approach to adapt a network to
changing conditions; we introduce "a combined routing method"
that allows the network to seamlessly swap from one routing
protocol to another protocol dynamically, while routing continues
uninterrupted. By creating a thin new virtual layer, we enable
each node in the ad hoc wireless network notify each other
about the protocol swap and we do not make any changes to
existing routing protocols. To ensure that routing works efficiently
after the protocol swap, we reuse information from the previous
protocol's routing table while initializing the data structures
for the new routing protocol. We study the feasibility of our
technique and the overheads incurred while swapping between
AODV, ODMRP and APRL under different network topologies
and traffic patterns through detailed simulations. Our results
show that the swap latency is related to the nature of the
destination protocol and the topology of the network. We also
find that the control packet ratio of a routing protocol during
and after a swap is close to that of the protocol running before a
swap, thus indicating that our approach does not add excessive
This report is an updated version of TR2007-588.
Bibliographic citation for this report: [plain text] [BIB] [BibTeX] [Refer]
Or copy and paste:
Soumendra Nanda, Zhenhui Jiang, and David Kotz, "A Combined Routing Method for Ad Hoc Wireless Networks." Dartmouth Computer Science Technical Report TR2009-641, February 2009.
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