A wireless sensor network is a heterogeneous network consisting of a large number of tiny low-cost nodes and one or more base stations. Each sensor node comprises sensing, processing, transmission, mobilize, position finding system, and power units. These networks can use in various applications like military, health and commercial. Routing in wireless sensor networks has been an active area of...

Heterogeneous applications could be assimilated within the same wireless sensor network with the aid of modern motes that have multiple sensor boards on a single radio board. Different types of data generated from such types of motes might have different transmission characteristics in terms of priority, transmission rate, required bandwidth, tolerable packet loss, delay demands etc. Considerin...

This paper has focused on the optimization of topology control for heterogeneous energy-saving sensor networks. In the heterogeneous sensor networks, there is initial heterogeneous energy in each sensor node which produces isomerism such as heterogeneous link in the process of wireless communication. Compared with the traditional energy conservation optimum algorithm which doesn’t take fully co...

In recent years, there has been an increasing interest in Wireless Sensor Networks. Sensor nodes in Wireless Sensor Networks are energy constrained. Therefore, in WSNs one of the major design challenges is to minimize consumed energy at the sensor nodes. Hence, a number of routing schemes are designed that make efficient use of limited energy of the sensor nodes. Hierarchical routing protocols ...

Coverage is a very important parameter because it measures how effectively a target field is monitored by the sensor network. This paper provides a comparative statistics for the impact of various node characteristics on the area coverage. In this paper, we have also focused on sensor networks with two types of nodes that differ in their capabilities, and discussed the effects of heterogeneity ...

As sensor networks mature the current generation of sensor networks that are application-specific and exposed only to a limited set of users will give way to heterogeneous sensor networks that are used dynamically by users that need them. The available sensors are likely to be dynamic (e.g., due to mobility) and heterogeneous in terms of their capabilities and software elements. They may provid...

Interconnecting multiple sensor networks is a relatively new research field which has emerged in the Wireless Sensor Network domain. Wireless Sensor Networks (WSNs) have typically been seen as logically separate, and few works have considered interconnection and interaction between them. Interconnecting multiple heterogeneous sensor networks therefore opens up a new field besides more tradition...

Semantic sensor networks use declarative descriptions of sensors promote reuse and integration, and to help solve the difficulties of installing, querying and maintaining complex, heterogeneous sensor networks. This paper reviews the state of the art for the semantic specification of sensors, one of the fundamental technologies in the semantic sensor network vision. Twelve sensor ontologies are...

Wireless sensor networks sense various kinds of information, process them locally and communicate it to the outside world via satellite or Internet. In the near future, sensor networks will play a major role in collecting and disseminating information from the fields where ordinary networks are unreachable for various environmental and strategical reasons. Hence it is increasingly likely that s...