This document describes how to use the Trusted Platform Module (TPM) to authenticate sensors in wireless sensors network which create a sensors’ domain. Model of the wireless sensor network is presented. There are three types of nodes in the domain. The M node is an authentication authority in sensors’ domain – it stores credentials of all nodes of domain. The M node is also the recipient of th...

Correct information and data aggregation are very important in wireless sensor networks because sending incorrect information by fault sensors make to wrong decision about environment and increasing defective sensor during the time incorrect data decries reliability of wireless sensor networks. Previous methods have Problems such as there are fault sensors in wireless sensor network therefore w...

Sensor networks are expected to evolve into longlived, autonomous networked systems whose main mission is to provide in-situ users – called actors – with real-time information for specific goals supportive of their mission. The network is populated with a heterogeneous set of tiny sensors. The free sensors alternate between sleep and awake periods, under program control in response to computati...

In this talk, we present recent research on simple, local energy aware mechanisms for prolonging the lifetime of sensor networks. We consider the fundamental problem of data propagation, when sensors collect data from the environment and report it to a particular sink node. Sensors collaborate locally to relay data in a multi-hop fashion towards the sink. However, the geometry of the data-paths...

Routing in Wireless Sensor Networks (WSNs) is a very challenging task due to the large number of nodes, their mobility and lack of proper infrastructure. Since the sensors are battery powered devices, energy efficiency is considered as one of the main factors in designing routing protocols in WSNs. Most of energy-aware routing protocols are mere energy savers that attempt to decrease the energy...

Exploiting features of high density wireless sensor networks represents a challenging issue. In this work, the training of a sensor network which consists of anonymous and asynchronous sensors, randomly and massively distributed in a circular area around a more powerful device, called actor, is considered. The aim is to partition the network area in concentric coronas and sectors, centered at t...

A wireless sensor network is the combination of a large number of deployed sensors over an area. Communication between the sensors is the most important factor for a successful sensor network. It is mandatory that long distance and multi-hop communication will occur between sensors. Generally sensors relay the sensed data of a particular territory to the command center via a base station. For t...

wireless sensor networks are the new generation of networks that typically are formed great numbers of nodes and the communications of these nodes are done as wireless. the main goal of these networks is collecting data from neighboring environment of network sensors. since the sensor nodes are battery operated and there is no possibility of charging or replacing the batteries, the lifetime of ...

target coverage is one of the important problems in visual sensor networks. the coverage should be accompanied with an efficient use of energy in order to increase the network lifetime. in this paper, we address the maximum lifetime for visual sensor networks (mlv) problem by maximizing the network lifetime while covering all the targets. for this purpose, we develop a simulated annealing (sa) ...

A sensor network is deployed to monitor and collect the information of environment. The common methods to organize sensors are the cluster and chain architecture. In the chain architecture, each sensor needs to report its gathered data and relay the data of its neighbours to the collector. The sensors which are close to the collector always exhaust their energy faster than the ones in the edge ...