Location information of sensor nodes in wireless sensor networks (WSNs) is very important, for it makes information that is collected and reported by the sensor nodes spatially meaningful for applications. Since most current sensor localization schemes rely on location information that is provided by beacon nodes for the regular sensor nodes to locate themselves, the accuracy of localization de...

In this paper, the author intends to present a particular methodology for plausibly gauging where the trade or market areas for businesses in retail business zones should be, using standard assumptions about the relationship between the space available for retail activities in those zones and the attractiveness of those zones for the surrounding area's customers. The novelty of the approach pre...

Abstract Wireless sensor networks, which have numerous uses in industries, attracted more attention over the past few years. Node localization is one of gordian technology to locate it. This research sought address low precision classic DV-hop algorithm context wireless networks. novel given some practical solutions this paper. The results simulations demonstrate that new method can improve acc...

A data set of long-term radon measurements in approximately 2200 houses in southern Belgium has been collected in an on-going national radon survey. The spatial variation of indoor Rn concentrations is modelled by variograms. A radon distribution map is produced using the log-normal kriging technique. A GIS is used to digitise, process and integrate a variety of data, including geological maps,...

In this paper, an IEEE 802.15.6 wireless body area networks (WBAN) medium access control protocol is developed to support a wireless USB (WUSB) application as a protocol adaptation layer (PAL). Even though we can avoid colliding packets using CSMA/CA, hazard of beacon collisions still remains in the WUSB over WBAN networks. Further, in order to solve beacon conflict problem, we introduce a mult...

The design and implementation of a 1.9GHz radio frequency transmit beacon is presented. The beacon is completely selfcontained, and all necessary energy is scavenged through solar and vibrational energy sources. Custom RF integrated circuitry and energy scavenging devices are used to create a highly integrated and efficient beacon. The 1.9GHz direct modulated transmitter uses a micromachined re...

In this article, a time-of-flight detection technique in the frequency domain is described for an ultrasonic local positioning system (LPS) based on encoded beacons. Beacon transmissions have been synchronized and become simultaneous by means of the DS-CDMA (direct-sequence code Division multiple access) technique. Every beacon has been associated to a 255-bit Kasami code. The detection of sign...

According to IEEE 802.11 protocol, beacon frames are periodically transmitted by the Access Point (AP) and carry mostly network specific information. All the wireless stations (or wireless clients) with in the "vicinity" of transmission range of AP receive corresponding beacon and use the information embedded in it for various purposes. The arrangement of information in beacon is standardized b...

The Linearized Auto-Localization (LAL) algorithm estimates the position of beacon nodes in Local Positioning Systems (LPSs), using only the distance measurements to a mobile node whose position is also unknown. The LAL algorithm calculates the inter-beacon distances, used for the estimation of the beacons' positions, from the linearized trilateration equations. In this paper we propose a method...

In this paper, a novel localization approach based on the use of a mobile beacon is proposed for wireless sensor networks. The localization system consists of a mobile beacon and beacon receiving modules on each sensor node for measuring distance. The localization is based on the application of multidimensional scaling technique and a local map registration approach. The approach is designed to...