Table 1: System notation.

SymbolMeaning

LLevel of the constructed tree
Number of cluster heads at first level
Number of leaf node per cluster
Number of type 1 nodes which is dependent on value L
Number of type 2 nodes
AArea of the deployment area
RRadius of the deployment area
bSensor data rate
Data rate of a node at level i
Total distance from all cluster members to cluster head
Characteristic distance
Single cluster energy consumption of data transmission at level i
Single cluster energy consumption of data aggregation at level i
Single cluster energy consumption of data transmission from level i to
Total energy consumption at level i
ETotal energy consumption
(·)Function of energy consumption of data aggregation
(·)Function of data compression
Electronic energy consumption coefficient
Amplifier energy consumption coefficient
Coefficient of energy consumption of data aggregation
Data compression rate
cData compression overhead
pPath attenuation exponent