A Comparative Study of Range-Free and Range-Based Localization Protocols for Wireless Sensor Network

Abstract

Wireless Sensor Network is deployed in many fields including military operations, mechanical applications, human services, smart homes, etc. However, deploying WSN encounters many challenges. One of the challenges is localizing the node position, especially mobile targets in critical situations. In this paper, the authors compare two types from range-free localization algorithms and one type from range-based algorithms, namely: Received Signal Strength (RSS), Centroid, and Distance Vector Hop (DV-Hops) protocols, using Cooja simulator. RSS localization algorithms require determining values of the RSS from the anchor nodes around the mobile node, to calculate the distance between the unknown mobile and the first three anchor nodes in the mobile range. The centroid localization requires only three anchors to compute the location of the mobile sensor without the need for distance measuring. Lastly, the DV-Hop algorithm uses routing tables of each anchor in the network topology to compute the Average Distance of Hops. The results show that rang-based algorithms are more accurate than range-free.

Improving Wireless Sensor Network Security Using Quantum Key Distribution

“…Both parties will notice an eavesdropper presence on the public media if a third party measures the conveyed quantity. The eavesdropper's measurement will modify the quantum state according to the rules of quantum mechanics 17,18 , and it will not be able to clone an arbitrary quantum state.…”

A Fuzzy Logic-Based Method for Evaluating AAL Systems

“…Thegoalofthispaperistoobtainasetofcriteriathatwouldbeapplicabletothecontextof AALsystem,basedonISO/IEC25012andISO/IEC25010standardsthatestablishQConsystem andsoftwareproductquality,anddataquality,respectively.Giventhatwirelesssensornetworksare deployedinmanyfields,includingmilitaryoperations,mechanicalapplications,andhumanservices (Shahra et al, 2017), the adopted evaluation procedure will be applied on an indoor positioning platformthatcontinuouslydeterminesthepositionsofpeopleinreal-time.…”