This paper introduces a K-Centers clustering protocol for heterogeneous wireless sensor networks. Energy consumption is an important issue for wireless sensor networks, and sensor nodes consume most of their energy with data delivery. The energy needed to transmit data is proportional to the distance between sensor nodes and either cluster heads or a base station. Clustering is an efficient tec...

Sensor networks are used in various applications in several domains for measuring and determining physical phenomena and natural events. Sensors enable machines to capture and observe characteristics of physical objects and features of natural incidents. Sensor networks generate immense amount of data which requires advanced analytical processing and interpretation by machines. Most of the curr...

We introduce an ultra-low complexity decentralized control scheme for adhoc mobile sensor networks that can be used for a great variety of sensing tasks. Sensor networks using this control scheme are easy to configure, can operate completely autonomously without supervision, and automatically adapt to various environmental changes. Moreover, they are robust to individual sensor failure as well ...

MEMS (Micro Electro Mechanical Systems) technology is enabling the development of low-cost, autonomous wireless sensor nodes with energy consumption of various components. In wireless sensor network, the deployments of small sensor nodes are usually inaccessible to the user, and thus replacement of the energy source is not feasible as per battery powered. Hence, energy efficiency is a key desig...

Wireless sensor networks are ad hoc networks comprised mainly of small sensor nodes with limited resources, and can be used to monitor areas of interest. Recent work has shown that hierarchical organizations can increase system throughput, decrease system delay, and save energy; and that energy savings increase as we increase the number of hierarchy levels in the network. Further gains can be o...

To solve the problem of coverage performance assessment, this study proposes an evaluation method based on the trajectory of the target, which is applicable to universal sensor networks, including both heterogeneous and homogeneous sensor networks. Different from the traditional Voronoi algorithm, the proposed Improved Coverage Force Division (ICFD) plans a coverage force division map whichscal...

adequate coverage is one of the main problems for distributed wireless sensor networks and the effectiveness of that highly depends on the sensor deployment scheme. given a finite number of sensors, optimizing the sensor deployment will provide sufficient sensor coverage and save power of sensors for movement to target location to adequate coverage. in this paper, we apply fuzzy logic system to...

New emerging applications for wireless sensor networks, such as mission-critical and multimedia applications, require sensing heterogeneous phenomena, and that the network supports different types of QoS-constrained traffic at variable rates. Designing an efficient Medium Access Control protocol allowing these applications to work properly while coping with the limited resources of sensor netwo...

In order to prolong the network lifetime, energy-efficient protocols should be designed to adapt the characteristic of wireless sensor networks. Clustering Algorithm is a kind of key technique used to reduce energy consumption, which can increase network scalability and lifetime. This paper studies the performance of clustering algorithm in saving energy for heterogeneous wireless sensor networ...

The current sensor networks are assumed to be designed for specific applications, having strongly coupled data communication protocols. The future sensor networks are envisioned as comprising heterogeneous devices assisting to a large range of applications. To achieve this goal, a new architecture approach is needed, having application specific features separated from the data communication pro...