Wireless Sensor Network : Mobile Sensor Networks

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 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: Security is always a main task to be performed in any network. Wireless Sensor Network are different from other networks.Hierarchical Routing Protocol are the best energy saving and efficient rout wireless sensor networks. Our Objective is to Provide End to End Confidentiality in LEACH and Performance measurement of leach protocol for various homomorphic encryptions. Leach is a very secure Protocol as cluster head changes in each round but sometimes data needs to be very confidential of some nodes to Base station. So the best technique used for providing this is Homomorphic Encryption.Our Objective is to apply Multiplicative Homomorphic Encryption in LEACH.So that need of decrypting data at cluster head is removed.

Sensor network protocols have a unique capability self-organizing. Another interesting feature of wireless sensor networks is that the sensor nodes cooperate with each other. Sensor nodes have an in-built processor, using which before transmission raw data is processed. These features facilitate wide range of applications of wireless sensor networks like biomedical, environmental, military, event detection and vehicular telematics.

This paper is presenting a concept on the algorithm for picking the cluster leader for the operation of data aggregator that works moderately by connecting with the wireless sensor network. The bandwidth consumption and energy effectiveness of wireless sensor networks is limited no longer usage and is eliminated by the data aggregator of wireless sensor networks. The data is collected from all the other nodes and this data is transmitted to the wireless nodes by the cluster node. To minimise the traffic congestion or traffic flow we choose the algorithm, which will automatically choose the shortest path in the wireless network for generating the path to the node called ‘cluster leader’ from the data packet router.

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 networks typically consist of a large number of sensor nodes with limited onboard battery resources which are difficult to recharge or replace. Thus the reduction of energy consumption for end-to-end data rate and maximization of network lifetime have become chief research concern. In recent years, many techniques have been proposed for improving the energy efficiency in wireless sensor networks. Among these techniques, V-MIMO technique has been considered as one of the effective ways to save energy. In WSN a node has two communication related energy consuming roles, one role is to serve as a packet generating source node (SN), and the other role is to relay packets for the other nodes, which are both energy consuming operations. This is why the energy minimization is required to extend the lifetime of the WSN.

Abstract—In wireless sensor network (WSN), many novel architectures, protocols, algorithms and applications have been proposed and implemented for energy efficiency. The efficiency of these networks is highly dependent on routing protocols which directly affecting the network life-time. Cluster formation in sensor network is one of the most popular technique for reducing the energy consumption and expand the lifetime of the sensor network. There are various cluster formation techniques used in wireless sensor network. In which, Particle Swarm Optimization (PSO) is simple and efficient optimization algorithm, which is used to form the energy efficient clusters with optimal selection of cluster head. The comparison is made with the well-known cluster based protocols developed for WSN, LEACH (Low Energy Adaptive Clustering Hierarchy) and LEACH-C as well as the traditional K-means clustering algorithm. A comparative analysis shown in the paper and come to the conclusion based on some parameters.

Wireless sensor nodes consists of three pars first one is wireless means without wires second one is sensor mean our nodes or data sensing process third and last one is networks means connection of these nodes to form a network to communicate and report data. When we concern its quality of service it may become too wide part of research so we are promised to work only in energy efficient protocols. The reason behind wireless

In computer science, wireless sensor networks are an active research area with numerous workshops and conferences arranged each year.

Wireless sensor networks (WSN) are self- governing sensors that are widely distributed in the respective environment. They are also referred as wireless sensor and actuator networks (WSAN). They are used to observe physical or environmental conditions, for example, temperature, sound, natural activities etc. They collect data from each active node and pass it to the network to the centralized location. There are many flaws occurred in wireless sensor network like user authentication as well as data travel in the network is not so much secure. We are developing a technique in which firstly we are allowing the user to pass the hard security authentication scheme and then the user can join the network. Further we are also providing a secure file transmission in network via public and private key concept. In this way we maintain the secure and authenticated transmission of data in predescribed environment.

A wireless ad hoc network is the collection of mobile nodes, without any requirement of centralized access point. Every node in the network, act as a router and packet forwarder. Now days, the ad hoc networking is used for the commercial uses. There are the many applications of the ad hoc networks, ad-hoc network are using in the military and it is also using for the other security operations. The secure routing is the biggest issue in the ad hoc routing applications. In ad hoc networks it is very difficult to design the security due to its unique characteristics. The characteristics of ad

The collection of sensor nodes by enabling cooperation, coordination and collaboration among sensor nodes is formed Wireless Sensor Network (WSN); the WSN consists of multiple autonomous nodes with a base station.

Wireless sensor networks are the networks that gather information such as environmental information, which there are numbers of applications of WSN such as healthcare, building monitoring, forest fire, smart home etc. WSN is capable of sensing, processing and communicating independently. However, as most of the sensor nodes are powered by non-rechargeable battery, the limitation of energy supply has considerably reduced the lifetime of the sensor network. Hence, new designs of sensor node network and energy efficient MAC (Media Access Control) and protocols for long term autonomous monitoring wireless sensor network has become the next vision.