Wireless Sensor Network (WSN) is a network which consists of thousands of sensor mobile nodes with no proper infrastructure and which are communicating over the wireless links. The nodes in a particular network transfer data from source to destination on the basis of particular routing protocol .There are no. of routing protocols used for finding efficient route on the basis of distance, throug...

Designing cost-efficient, secure network protocols for Wireless Sensor Networks (WSNs) is a challenging problem because sensors are resource-limited wireless devices. Security services such as authentication and improved pairwise key establishment are critical to high efficient networks with sensor nodes. For sensor nodes to correspond securely with each other efficiently, usage of cryptographi...

In wireless sensor networks (WSN), there are many nodes and they are unattended so an adversary can easily capture and compromise the sensor nodes and take secret key from the nodes then make many replicas (duplicate) of them. After getting the secret key from the sensor node the sensitive data which is present in the nodes get leaked so an adversary can quickly degrades the network communicati...

Sensor nodes are being increasingly deployed for monitoring different phenomena in a stand-alone manner or as a part of larger wireless sensor networks (WSN). In addition to protocols for communication within the WSN, sensor nodes may also support communication with other devices. These devices either represent gateways for exposing data and metadata to external networks, or serve as connection...

Recent contributions have uncovered the potential of network coding, i.e. algebraic mixing of multiple information flows in a network, to provide enhanced security in packet oriented wireless networks. We focus on exploiting network coding for secret key distribution in a sensor network with a mobile node. Our main contribution is a set of extensions for a simple XOR based scheme, which is show...

Coverage problem is an important issue in wireless sensor networks, which has a great impact on the performance of wireless sensor networks. Many researches in this area only focus on how to cover all the targets in the network, which ignore considering the problem of how to transmit the sensing data to the sink. In this paper, we propose an energy-effective connected target coverage algorithm ...

This paper is survey about life time enhancementtechniques used in wireless sensor networks. In wireless sensor network the lifetime of network is more concentrated area for researchers. Many factors are taken into account for the maximization of life time of wireless sensor networks, such as minimizing the power consumption, low cost operation, optimal routing algorithms, forwarding of residua...

an efficient cluster head selection algorithm in wireless sensor networks is proposed in this paper. the implementation of the proposed algorithm can improve energy which allows the structured representation of a network topology. according to the residual energy, number of the neighbors, and the centrality of each node, the algorithm uses fuzzy inference systems to select cluster head. the alg...

Network diagnosis in Wireless Sensor Networks (WSNs) is a difficult task due to their improvisational nature, invisibility of internal running status, and particularly since the network structure can frequently change due to link failure. To solve this problem, we propose a Mobile Sink (MS) based distributed fault diagnosis algorithm for WSNs. An MS, or mobile fault detector is usually a mobile...

Mobility facilitates efficient data collection protocols improving the performance, scalability and life-time of wireless sensor networks. We propose a simple, yet effective and scalable method for resilient data collection in mobile-assisted wireless sensor networks. The mobile element covers an area using periodic long-range broadcast messages. Upon receiving a broadcast message, a sensor sen...