Many applications of wireless sensor networks are useful only when connected to an external network. Previous research on transport layer protocols for sensor networks has focused on designing protocols specifically targeted for sensor networks. The deployment of TCP/IP in sensor networks would, however, enable direct connection between the sensor network and external TCP/IP networks. In this p...

---------------------------------------------------ABSTRACT-----------------------------------------------Reliable transport protocols such as TCP are tuned to perform well in traditional networks where packet losses occur mostly because of congestion. Many applications of wireless sensor networks are useful only when connected to an external network. Previous research on transport layer protoc...

Wireless sensor networks have been identified as being useful in a variety of domains to include military sensing and tracking, environment monitoring, patient monitoring and tracking smart environment, etc. When sensor networks are deployed in a hostile environment, security becomes extremely important, as they are prone to different types of malicious attacks. Due to the resource limitations ...

The objective of this paper is to emphasize a clear and natural distinction in strategies of sensor network design. In order to display different architectural paradigms in today’s wireless sensor networking, the classification of sensor networks as intensive and extensive ones is introduced and explained. Main paradigms representative for both technologies are compared. As follows from the dis...

In order to fully realize the potential of sensor networks , energy awareness should be incorporated into every stage of the network design and operation. As a representative application of sensor networks, object tracking sensor network faces many system and design challenges in terms of energy management. By studying the role of semantic location in object tracking queries, data dissemination...

Energy efficiency of MIMO techniques in wireless sensor networks is analyzed. Assuming a cooperative sensor network, the energy consumption of MIMO-based wireless sensor networks is compared with conventional SISO sensor networks. The dependence of energy efficiency on coherence time of the fading process and communications distance is considered. Our results show the applicability of MIMO tech...

Wireless sensor networks are very broadly used in many applications. Sensor networks still have problems in conveying data from one sensor node to other node. Routing algorithms are developed for wireless sensor networks. In this paper, some of them are discussed. These protocols still have some problems in sensor networks. Ad hoc networks and WSNs are similar to each other as both depend on ho...

Sensor networks [1] contain a large number of sensor nodes that collect some kind of data, for example temperature or air pressure, from the environment. Even though both wireless ad hoc networks and sensors networks communicate wirelessly, they are quite different from each other. The number of nodes in sensor networks can be several orders of magnitude larger than in ad hoc networks. Sensor n...

Wireless sensor networks may want to continuously extract data from other networks. In those situation energy efficient data collection and aggregation in wireless sensor networks is always a challenging issue present days. For example network topology construction and interferences also causes significant effects. For providing more efficiency in wireless sensor networks, In this proposed powe...