LEACH PROTOCOL IN WIRELESS SENSOR NETWORK: A SURVEY
Abstract
A wireless sensor network consists of hundreds to thousands of low-power multi functioning sensor nodes, operating in
an unattended environment with sensing and computational capabilities. Out of many routing protocols in the wireless sensor
network routing protocols are divided as flat and hierarchical routing protocols due to several limited resources like CPU, memory
size, battery etc. LEACH is a hierarchical routing protocol and which makes use of clustering scheme and provides better
performance than flat routing protocol. If the LEACH routing protocol is applied to the large wireless sensor network sensor nodes
in the specific area cannot communicate with the base station. Hence it will cause serious communication problem. Clusterhead
chaining scheme is used to solve the communication problem. But if the clusterhead gets failed the whole data present in that
particular head will get lost. Hence we can make use of a secondary clusterhead which contains the maximum amount of data as
that of first clusterhead.If the first clusterhead gets failed we can make use of second one while forming chain so that the
information will not be lost while forming chain.
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