LEACH module. 林政龍. Outline. Introduction LEACH (Low-Energy Adaptive Clustering Hierarchy) Installation LEACH module. WSN (wireless sensor network). Sensor node 的能力 Sensing Process communication Sensor node 的特色 量多 ( hundreds or thousands of sensor nodes ), 體積小 , 夠便宜 電池供電 衍生問題
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Cluster-head election process : (the same as LEACH)
A sensor determines whether to become a cluster
head by generating a random number
and compare this value with a threshold
A node becomes a cluster head if the random number
is less than a threshold
P,the desired percentage to become a cluster-head;
the set of nodes that have not being selected as a cluster-head in the last 1/P rounds.
r,the current round
Resource Adaptive Node