Trilateration techniques for position estimation use distances measurements in order to determine the unknown location of a mobile user. In this paper, a Time of Arrival (ToA) based method for estimating distance in an IEEE 802.11b network is presented. This method uses the RTS/CTS handshake and an external time counter for computing the Round Trip Time (RTT) and estimate the ToA. The system de...

AbstmcI-"be location of mobile terminals in cellular networks is an important problem with aPPlifations in resoume allocation, lofation sensitive browsing, and emergency communications. A hey problem in mobile terminal location is the of sight ( ~ 0 s ) propagation, measurement quantization, and measurement noise and also bas a reasanable implementation cost. This paper pro. propagation [Z], [3...

Many vehicles rely on the Global Positioning System (GPS) to compute their locations. The inaccuracy of GPS devices means sometimes vehicles believe they are located in different lanes or roads altogether. Vehicular Ad Hoc Networks (VANETs) allow vehicles to communicate with each other using wireless means and thus connect them in a very dynamic wireless network. The algorithm VANET LOCation Im...

-This paper considers fault location and analytical synchronization of two-end measurements functions as embedded into a current differential protective relay. As a result of that, incomplete two-end measurements, i.e. three-phase currents measured at both line ends, while three-phase voltage only from only one end are considered for processing. Fault location and synchronization formulae are d...

This paper presents a framework for modeling and evaluating the performance of location management schemes for a Personal Communication Services (PCS) network. The models take into account complex human behaviors, and are based on actual measurements of these behaviors. Real measurements are a crucial factor in achieving realistic performance evaluations. We have developed a powerful and highly...

Aiming at reaching the best quality in terms of supplying and services, some utilities are using more and more automation and instrumentation devices in its networks. Thus, in a new scenario, voltage sags are available from some additional measurements along the feeder by means of power quality or voltage measurement devices. In this work, a fault location algorithm, which uses voltage sag meas...