Wireless Sensor Networks (WSN) consists of large number sensor nodes. The sensor nodes are battery powered devices, they communicate over a wireless medium and consumes energy during data transmission. The main task in WSN is to reduce power consumption of sensor nodes. It’s possible to minimize power consumption in WSN by reducing data dissemination. In WSN sink sends the queries to sensor nod...

It is a great challenge for designing a routing protocol that can maximize the network lifetime of Wireless Sensor Network (WSN), due to the limited energy of Sensor Node (SN). As a well-known hierarchical routing protocol in WSN, LEACH protocol could extend the WSN lifetime effectively. It assumes that all nodes can communicate with Base Station (BS) directly. With the expansion of WSN scale, ...

Wireless Sensor Network (WSN) is a collection of sensor nodes to monitor the physical surroundings also in various application such as surveillance, tracking system, machine control, automation etc., WSN are deployed mostly in open and unprotected environment. Several security attacks are invoked in wireless sensor networks during the transmission of data. Because of its open nature wireless se...

The world’s population is expected to double by 2050; world food supply is unlikely to double by doubling the area under cultivation or by doubling the availability of water. There are other challenges too, such as decline in the number of farms and a decline in the number of agriculture workforce. Climate change is expected to further aggravate the existing situation. Therefore, for the humani...

Real-time and continuous monitoring of high value goods can considerably improve the reliability and effectiveness of supply chains. Wireless Sensor Networks (WSN) offer technical capabilities for continuous sense and respond capabilities. WSN offer complementary advantages over the use of Radio Frequency Identification (RFID) in supply chains. Still, WSN have not been massively adopted. While ...

Even though real-time data access to remote sensor data is desirable for many WSN applications, collecting remote data reliably from a WSN is a challenging task since many components of the WSN are subject to harsh elements of nature. A deployed system’s performance and lifetime can be impaired if this harsh environment of the deployment site is not considered. The deployments of LUSTER, a WSN ...

Operating system support for Wireless sensor networks (WSN) plays a major role in building scalable distributed applications that are efficient and reliable. Over the years, we have seen a variety of Operating systems emerging in the sensor net community to facilitate developing WSN applications. The design of operating system for WSN is a challenging task. In the proposed model optimized kerne...

Wireless Sensor Network (WSN) consists of huge number of sensor nodes which are small and inexpensive with very limited resources. The public key cryptography is undesirable to be used in WSN because of the limitations of the resources. A key management and predistribution techniques are required to apply the symmetric key cryptography in such a big network. Many key predistribution techniques ...

Wireless Sensor Networks (WSN 1 ) have gained worldwide attention in recent years, due to their potential for development of applications in various areas: health, environmental monitoring, control and monitoring processes, etc. Due to the complexity of WSN design, it is necessary to employ design methodologies at a very high level of abstraction which allow the exploration of diverse alternati...

Wireless Sensor Networks (WSN) have been studied in several contexts. There are many challenges involving WSN design such as the energy resources optimization, the robustness and the network coverage. We address here the problem of energy-efficient topology design. A welldesigned dynamic topology and efficient routing algorithms may allow a large reduction on the energy consumption, which is on...