Data Aggregation Rate Assumption for Wireless Sensors

The concept of data aggregation rate (DAR) is introduced to denote the compressing capability of a sensor node in the sensor networks. The traditional assumption conditions about sensor capabilities include perfect data aggregation (PDA) and not using data aggregation (NDA). DAR breaks through the traditional assumption conditions and presents a new assumption. Furthermore, the traditional assumptions can be considered as two special cases of the new assumption. Then, a relationship among DAR, lifetime and the amount of the signal received at the base station is given. Simulations show that the proposed assumption has a more efficient tradeoff between the number of data signals received and the network lifetime by the comparison.