Abstract
In mobile environment of wireless sensor
networks (WSN), the fixed frame of MAC protocol causes
performance deprivation such as packet conflict due to
overloading etc. In this paper a low energy adaptive
clustering mobility aware MAC protocol for WSN is
proposed. This paper focuses on reducing the power
consumption of wireless sensor networks. Therefore, a
communication protocol named LEACH (Low-Energy
Adaptive Clustering Hierarchy) is modified. We propose a
clustering routing protocol that partitions the network into
clusters, the cluster contains, CH, sub-CH (the node that will
become a CH of the cluster in case of CH dies), cluster
nodes, thus extends network lifetime. Data transfer is based
on frames and the CHs control the frames. The CH is
responsible for controlling the channel access between sensor
nodes within the cluster and collects data from them. The
frames are handled during multiple phases using a hybrid
scheme of CSMA and TDMA. Each frame is composed of
two slots mini slot and a dynamic normal slot. The Normal
slot is used by sensor nodes to report their data to the CH.
We have conducted simulation-based evaluations to compare
the performance of the proposed protocol against Low-
Energy Adaptive Clustering Hierarchy (LEACH).