In WSN in hierarchical protocols such as HEED protocol, the range of cluster head is identified by cluster radius which is smaller than threshold distance (d0 = 87). Why don't we use the threshold distance rather than cluster radius? What is the difference between them?
The radius of a cluster is the maximum distance between all the points in the cluster wheres threshold distance is the maximum distance for a threshold value attribute of node .
Thank you so much.
Why we don't use the threshold distance as a cluster radius? We know that the network life-time increases as the value of radius increases.
We can not use it because the threshold distance is dependent on threshold variable (defined) wheres in case of WSN the cluster distance is fixed.... till a cluster does not changed its formation .....
Download source code of HEED protocol in Matlab Simulator, all right reserved by Wireless Sensor Networks Laboratory of Iran.
http://wsnlab.org/downloads/
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