A new energy efficient approach by separating data collection and data report in wireless sensor networks

摘要

A sensor network consists of a large number of distributed wireless sensors which are equipped with low power wireless transceivers. Network lifetime, scalability, and load balancing are important requirements for many data gathering sensor network applications. Network clustering is an effective approach for achieving these goals wherein sensors are grouped into multiple clusters. Multihop data transmission may provide efficient energy conservation further. A sensor in a cluster may work as a cluster head for data gathering, aggregation, and report to the base station (BS). These tasks can also be performed by distinct sensors in the same cluster. In this paper, we clarify some characteristics of multi-hop data transmission. Furthermore, we propose a new data gathering approach for single-hop transmission wherein both the data gathering and the aggregation are performed by the same sensor in a cluster but the report to the BS may be done by a different sensor. The simulation results show that theproposed algorithm achieves better performance than other existing algorithms.