Wireless Sensor Networks And Technology Constraints

A WSN is a type of wireless networks that consists of collection sensor nodes which are tiny devices. Each sensor node of the network has different processing capability. It may contain multiple types of memory (program, data and flash memories), have a RF transceiver, have a power source (e.g., batteries and solar cells), and accommodate various sensors and actuators. The nodes communicate wirelessly and often self-organize after being deployed in an ad hoc fashion [13, 14]. Optimum need of each sensor node is to maximize its own utility function. Also the whole network requires resource assignments balance to perform in a useful and efficient way. This chapter presents a brief survey on WSNs showing its types, characterizing features, protocols and applications.

Abstract— Wireless Sensor Networks (WSN) introduce a new way to interact with the physical environment. The security in WSNs became an attractive area of research. WSNs are susceptible to a wide range of malicious attacks. At present ECC is considered for secure communications, which is having good potential for WSN security due to its smaller key size and its high strength of security. Unfortunately, the execution time of ECC is more which is not suitable for more number of applications. A number of other security mechanisms have been proposed for sensor networks to provide data confidentiality, namely Advanced Encryption Standard (AES) and Data Encryption Standard (DES). In this paper, we propose an algorithm, which is compared and analyzed with the existing ECC and AES to provide better security with authenticated sensor nodes. The authentication is done with a secret code. The proposed algorithm will ensure the secure communication with authenticated devices. The analysis results shows that the scheme works better than the common existent schemes with better utilization of available memory.

Abstract—Wireless Sensor Network (WSN) is basically a wireless network in which sensor nodes are distributed in any environment condition, to collect the data or information such as temperature, pressure, wind, sea level etc. and accordingly data or information will be passed to the main location. Reliable Trust and Reputation of a node stands for the measure of trust over a certain period of time which can be useful to evaluate the risk of attack from that particular node. We have combined all these parameters in order to risk of attack from a particular node.

Abstract - Wireless Sensor Networks (WSN) comprises of several tiny, low-cost, resource constrained sensor nodes. These nodes are placed in harsh environments and generally are used for air pollution monitoring, water quality monitoring, industrial monitoring, health monitoring and more. Routing is difficult in such surroundings primarily due to the unique constraints the wireless sensor networks suffer from. Wireless sensor network is highly dynamic, making existing routing protocols ineffective. This paper concentrates on energy efficiency of the protocols. Both the protocol presented are hierarchical and cluster based. Both have sensor nodes and a base station (BS). The BS selects the Cluster Heads (CH) among themselves. CH is the elected sensor node which passes on the sensor data collected by sensor nodes of its cluster to either BS or other CH. All candidate nodes for becoming CH are listed, based on the various factors like relative distance of the candidate node from the Base Station, outstanding energy level, possible number of neighboring sensor nodes the

Wireless sensor networks are very important in everyday life. This new technology is exciting with unlimited potential for numerous application areas including environmental, medical, military, transportation, entertainment, emergency management and homeland defence. WSN are connected with nodes, in WSN communication takes place through air. The exploration subject that I have picked is on Wireless

Domestic Applications: Sensor networks can bring the idea of smart homes where we can monitor and control at site or remotely home appliances like air conditioning, heating, ventilation, refrigeration, security alarms etc.

Wireless sensor network (WSN) is an infrastructure less, dynamic topology, application oriented, multihoping network design with small, sensing wireless distributed nodes. [1] WSN consists of thousand of wireless node distributed in a geographical area. The distributed nodes senses the current status of its region and supply to the next upper which collects different information from different nodes and supplied final information to the

A wireless sensor network can be composed of a large number of nodes, constituting a

Wireless Sensor Network (WSN) consists of a large number of low cost sensor nodes depolyed in parking area. These sensor nodes form a multi-hop ad-hoc network by wireless commnunication.

Energy Consumption: Sensor Nodes are subject to battery power. Sensor networks are set on hostile situations so supplanting the battery is unfeasible. Consequently energy preservation and administration is a basic issue to determine in wireless sensor network.

Wireless Sensor Networks (WSN) consists of large number of sensor nodes distributed across a geographical area in highly dense manner. These nodes are of low cost and use less energy to perform various functions. These sensors have the ability to communicate with each other and route the data to next node or back to the Base Station (BS). Sensor nodes in a sensor network communicate with other nodes and collect the information.

With increased capabilities and decreased costs, mobile wireless sensor network rapidly gained popularity and interest that greatly enhanced ability to monitor any phenomena. The idea of needs for monitoring has been around for a long time. However, a mobile wireless sensor network became available because of microelectromechanical systems and implementation of wireless communication such as satellites and GSM networks to transmit the gathered data. Further development in semiconductor technologies enabled miniaturization, low power consumption and decreased cost (Kumbhare, Rangaree, & Asutkar, 2016). Even though the monitoring with the use of sensor network have been around for a couple of decades the implementation was done more in stationary approach rather than mobile. Similarly to

A sensor network has large number of sensor nodes, which are appropriately deployed or place either inside the experiment or very near to it. A sensor network is a network consisting of distributed wireless automatic devices using sensors to coordinately monitor physical or surrounding conditions, such as temperature, sound, stress/ pressure, movements or pollutants etc at different locations and time. The development of wireless sensor networks was originally motivated by military applications such as battlefield surveillance. The wireless sensor networks nowadays can be used in many more application areas, including environment and domain monitoring, medical applications, intelligent home systems, and traffic commanding.

nowadays sensors are anywhere. We take it for granted, however there are sensors in our cars, in our clever telephones, in factories controlling CO2 emissions, and even inside the ground tracking soil conditions in vineyards. while evidently sensors were around for a while, research on wireless sensor networks (WSNs) commenced returned within the Eighties and it's miles only in view that 2001 that WSNs generated an elevated hobby from commercial and research perspectives. This is due to the supply of less expensive, low powered miniature additives like processors, radios and sensors that have been regularly included on a unmarried chip (system on a chip (SoC)).

A wireless sensor network (WSN) is a network of nodes that sense and control the environment providing interaction between the machines and the surrounding environment. It is formed by large number of sensors nodes where each node is equipped with sensor to detect physical characteristic such as temperature, pressure, weight etc. [2]. WSN is a new revolutionary method which gathers information from sensor nodes providing a reliable and efficient network. With the growing technology of sensors, WSNs will become the key for internet of things. The current focus of sensor network is mainly on networking technology comprising of dynamic environment and the sensor nodes. The new research program of SenseIT provided the sensor networking with new capabilities such