ISSN : 1796-2056
Volume : 4    Issue : 3    Date : May 2009

SmartGate: A MAC Protocol for Gateway Discovery in Clustered Ad-Hoc Networks
P. Venkateswaran, Pritam Som, Rahul Ghosh, Aritra Das, Subananda Hansda, Rabindranath Nandi
Page(s): 208-215
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In the absence of established infrastructure, Mobile Ad-Hoc Networks (MANETs) can provide a fast
and efficient way of communication among the nodes. In this paper, we present a MAC protocol with
clusterhead and gateway selection algorithm. Clustering schemes are expected to achieve better
scalability since most of the topology changes within a cluster are hidden from the rest of the
network. Here, we use Node Identifier Packet (NIP) to form the members of a cluster and depending
upon several QoS metrics (e.g. bandwidth, battery life, SINR) the clusterhead has been selected.
For inter-cluster communication, we choose the gateway nodes. However, during the gateway
selection procedure, we ensure that the maximum number of clusters that can be connected with
the help of a single gateway does not exceed its tolerable overhead. This paper also provides the
computational overhead of packet transfer for the gateway selection scheme. Simulation results
show the performance of the protocol under different scenarios.

Index Terms
MANET, clusterhead, gateway