Localization Techniques in Wireless Sensor Networks (original) (raw)

Localization Techniques for Wireless Sensor Networks

The important function of a sensor network is to collect and forward data to destination. It is very important to know about the location of collected data. This kind of information can be obtained using localization technique in wireless sensor networks (WSNs). Localization is a way to determine the location of sensor nodes. Localization of sensor nodes is an interesting research area, and many works have been done so far. It is highly desirable to design low-cost, scalable, and efficient localization mechanisms for WSNs. In this paper, we discuss sensor node architecture and its applications, different localization techniques.

Exploring Localization in wireless sensor network

Node Localization in Wireless Sensor Networks (WSN) refers to determining the location of sensor nodes which are deployed in sensor field that are responsible for monitoring applications like environment perceived applications, tracking, traffic monitoring etc. This paper covers the localization techniques and study which algorithm provides higher accuracy, low expense and better power utilization.

Overview of Localization Techniques in Wireless Sensor Networks

Design Engineering (Toronto), 2021

A sensor network's primary role is to collect and forward data to its intended endpoint. It's important to understand where the data we've gathered is held. In Wireless Sensor Networks (WSNs), localization is widely used to determine the position of sensor nodes. In a WSN with thousands of nodes, installing GPS on each sensor node is costly, and GPS cannot provide precise position results in an in-building WSN. It's also impossible to manually configure location relation on each sensor node in a dense network. This is problematic since the sensor nodes must decide their current location without the use of special hardware such as GPS or manual setup. Because of localization methods, WSN implementation is cost-effective. The majority of localization methods rely on an anchor node or beacon node that knows where it is. Other nodes in the network use the anchor node's or beacon node's positioning information to find themselves. In this paper, we give a quick overview of the different types of localization strategies used in wireless sensor networks, as well as the issues and research gaps that still exist.

Localization of Nodes: A New Challenge for Wireless Sensor Networks

International Journal of Computer Applications, 2013

With the widespread involvement of low cost, small sized sensor nodes in the wireless sensor networks (WISENETs) technology to support variety of collaborative applications such as monitoring and surveillance for civilian as well as military purposes; location aware computing for such nodes is really becoming an important challenge. Localization also plays a vital role in ubiquitous environments with computing potentials in targeting nodes for their security as well as navigation. Since inclusion of GPS receiver in a sensor node becomes too expensive, hence for locating sensor nodes in wireless sensor networks a small number of sink nodes are used that know their location whereas other nodes estimate their location based on the transmission and receiving energy of the message which they send to the sink node. This paper provides an overview of the existing localization solutions with their comprehensive performance metrics in wireless sensor networks and attempt to classify them broadly in terms of their usage area which can be indoor or outdoor or both.

Node Localization in Wireless Sensor Networks

When we talk about the improvement in the wireless communication technologies, we come across the topic of wireless sensor networks (WSN). Sensor nodes have evolved from just giving out information, to processing information and communicating with the different nodes of a network. The bulky structure of the node is reduced to a miniature one, also their resistance to various environmental conditions. Basically, the sensor nodes are designed to sense the physical phenomenon, process the data and transmit to the base station. Earlier the location of the sensor was known and hence there was an ease of operation. For various applications, the locations of nodes are not predetermined and are deployed randomly. Thus, their exact locations must be known. Localization information represents the geographic coordinates of the physical location of the node. In other words, we determine the position of nodes for communication and detection.

Localization System for Wireless Sensor Networks

2015

Sensors are frequently being used for monitoring different phenomena of environment, Military, Health, Industry, Automobiles etc., and the information derived from sensed data are being used for making important decisions which directly affects humans and at times human life. This sensed data can only be of use if we know the exact position of the sensor node. This is not always easy as in many real life scenario, the deployment is random and in hostile conditions. Further, replacing a dead or damaged node is not an option in many circumstances. Many different approaches have been proposed by research community for localization information of a node deployed in a target area. In this work, an attempt has been made to review most promising localization methods proposed so far in comparative manner.

Localization of Sensor Node in Wireless Sensor Network

2015

Wireless sensor networks (WSNs) have become very popular nowadays because they are widely used in military application, tracking the object, forest fire detection, disaster management, in navigation systems and many more applications. Implementing the WSNs has large number of benefits as well as obstacles. There are several issues in WSN such as security, data aggregation, data dissemination, data routing, localization etc. Localization is the challenging issue, because without knowing the location of the data where it is coming from, processing that data becomes totally inappropriate. Finding the location of the unknown sensor node using anchor node is localization of that node. Anchor nodes or the beacon nodes are the nodes with Global Positioning System (GPS) in it. Taking these anchor nodes as reference nodes we are finding out the position of the unknown sensor nodes. In this work we are proposing range based localization algorithm using modified quadrilateral approach. Here we...

A Review on Localization Algorithms in Wireless Sensor Networks

2014

In wireless sensor networks (WSNs), nodes are deployed in sensor fields for monitoring and controlling the physical environments. Node localization is fundamental challenge in wireless sensor networks as without knowing the location of nodes sensed information will have no value. Therefore, it is vital that nodes must know their location. This paper provides a review of basic techniques for localization. The localization algorithms are classified into GPS based or GPS free, Anchor based or Anchor free, Centralized or Distributed and Range based or range free. Paper further discusses limitations of each of the algorithms.

SURVEY OF DIFFERENT LOCALIZATION TECHNIQUES OF WIRELESS SENSOR NETWORKS

Node localization is essential to report the origin of tasks, support group query of sensors, routing and to answer questions on the network exposure. So, one of the basic challenges in wireless sensor network is node localization. This paper reviews different techniques of node localization in wireless sensor networks. The general idea of the schemes proposed by different scholars for the enhancement of localization in wireless sensor networks is also presented.

Localization Algorithms for Wireless Sensor Networks: A Review

Wireless sensor networks (WSNs) have boomed in this last decade. They are involved in all aspects of our daily lives and make it easier. Despite the great strides in these networks, several problems arose and are remained open. The localization of sensor networks nodes is one of the most challenging problem that has attracted many researches. Consequently, a lot of work has been carried out to provide accurate location information of sensors and sensing field. In this paper, we present a taxonomy of the most important localization technologies proposed for WSNs. We survey different published localization algorithms in the literature while giving an up-to-date with the most recent schemes. Then we highlight their characteristics and describe metrics used for their classification. A complete comparison will be given and also directions of future research will be discussed.