Low-energy adaptive clustering hierarchy: Difference between revisions

Revision as of 12:23, 14 April 2007

Revision as of 23:36, 24 May 2007

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{{Cleanup|date=November 2006}}

{{Wikify|date=November 2006}}

'''Low Energy Adaptive Clustering Hierarchy ("LEACH")''' is a [[routing protocol]] in wireless sensor network (WSN). It is an hierachical protocol. Stochastic Cluster head selection [[algorithm]] is used in this protocol. LEACH

• Cluster based approach

It is

• Random cluster head selection each round with rotation

•*a Cluster based approach

• Communication done with cluster head via TDMA

• *Random cluster head selection each round with rotation

communicating with non cluster nodes)

• *Communication done with cluster head via TDMA communicating with non cluster nodes)

• *Cluster membership adaptive

• *Data aggregation is done at cluster head

• *Cluster head communicate directly with sink or user

*Based on the model the following can be said about

- **The sources and users are stationary and events monitored

- **The interest propagation is predetermined

- **Data dissemination mechanism is broadcasting

Together, these features allow LEACH to achieve the desired properties. Initial simulations show that LEACH is an energy-efficient protocol that extends system lifetime.