Energy Efficient clustering Algorithm (EECA) is used to
process the data aggregation. EECA algorithm separates sensor
network into cluster head and its cluster member. In EECA
phases can be divided into setting phase and steady phase
[5]. In setting phase cluster head allocates (TDMA) time slot to
cluster member. In steady phase cluster member send the data
to cluster head within its time slot. Then, the cluster head
transmits aggregate data to sink nodes. By considering the
cluster head corresponding cluster head is selected and
aggregation tree is constructed to save energy.