Abstract
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A Load Aware Routing Protocol for Mobile Ad hoc Networks
The Ad hoc On-Demand Distance Vector (AODV)
routing protocol is an efficient Mobile Ad hoc NETworks (MANETs)
routing protocol. It uses hop count as a metric for the path Selection.
AODV does not support Quality of Service (QoS) and neither any
load-balancing mechanism. The performance of the network can be
improved by using a load balancing mechanism. Such a mechanism
transfers jobs from overloaded nodes to under loaded nodes. In this
paper, we propose a new protocol called “Load-Aware AODV”
(LA-AODV), to provide QoS and load-balancing features. LA-AODV
is based on AODV, where protocol messages extensions are used to
accomplish QoS and load-balancing features. LA-AODV is a
cross-layer solution that works in conjunction with a QoS-based MAC
layer. It uses only local information and does not require any additional
communication co-operation between nodes.
The path Selection in LA-AODV is based on the current MAC load
of the nodes. The proposed protocol Selects the path with the minimum
MAC load based on a metric called “MAC load indicator”. We show
through simulations that LA-AODV outperforms AODV in terms of
received packets, delay, and routing overhead. |