Adaptive Cluster-Based Data Collection in Sensor Networks with Direct Sink Access

Minimum cost hierarchical architecture for correlated data aggregation in sensor networks with mobile access

“…Moreover, the residual energy factor is not taken into account, thus some lowpower nodes can be chosen as cluster heads. Cluster-based data aggregation for SENMA has been recently considered in [19] and [2]. In [19], the authors consider the deployment of two types of sensor nodes such that a minimum cost heterogenous sensor network is built with a lifetime constraint.…”

“…However, data correlation is not considered in this work. The latest work [2] done by Lotfinezhad propose a Cluster-based Data Collection scheme for sensor network with Direct Sink Access. In this scheme, a low-overhead and simple MAC conceptually similar to ALOHA is provided and evaluated under an EnergyEfficient Clustering (EEC) framework derived from [20].…”

“…In this scheme, a low-overhead and simple MAC conceptually similar to ALOHA is provided and evaluated under an EnergyEfficient Clustering (EEC) framework derived from [20]. The focus of [2] is thus not minimum cost hierarchical architecture but transmission scheduling at MAC layer.…”

“…Constant ε A accounts for the energy needed to run the power amplifier at the transmitter [6]. The mobile sink s is assumed to fly over the network at a height H far enough such that the distance between a CH i and s can be approximated by H [2] (d is = H). Since the radio propagation between cluster heads and the mobile sink (in our case, the aircraft) is apparently lineof-sight, a path loss exponent of 2 -the free space model [6] -is considered for both internode communication and direct sink access (α = 2).…”

“…1). This network paradigm is envisioned to inspire a wide range of applications in both civilian and military domains [2]. The propagation channels are likely line-of-sight, thus direct communications between sensors and sinks are possible even through a long distance [3].…”