Abstract:
Wireless sensor node is a micro-electric device that can be equipped with constrained power source and it is generally unrealistic to charge
or replace the exhausted battery, which gives
way to the primary objective of maximizing
node/network lifetime. Therefore energy efficiency is one of the most important issues in wireless
sensor networks and an important attribute sensor network MAC protocols. Sensor-MAC
(SMAC), the widely used protocol may require
some nodes to adapt multiple sleep/listen schedules which results in the early death of border
nodes and this problem has a significant adverse
on the lifetime and connectivity of WSNs. Although this problem can be solved by modifying
SMAC with border node handover procedure,
some nodes may encounter collision which is one
of the major causes of energy waste. This paper
presents the modified SMAC adjusting single
homogeneous scheme based on border node
handover procedure in order to reduce or eliminate collision amongst the border node area. The
impact of the novel approach on the network
performance is compared with SMAC and the
modified SMAC with border node handover procedure through simulation.
