mobile positioning


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mobile positioning

The ability to pinpoint the location of a vehicle or mobile caller in transit. Also called "geotracking," these location-based services (LBS) are used for emergency purposes as well as proximity marketing, traffic updates, fleet management and asset and people tracking. They are also used for social purposes; for example, the WhosHere app for smartphones identifies other WhosHere users in the vicinity. Mobile positioning systems use the following methods to locate a person or vehicle. In some cases, all three are used (cellular, Wi-Fi and GPS).

Cell Towers
The most basic method is cell of origin (COO), which identifies the cell tower closest to the user; however, accuracy is typically around 1,500 feet. Using additional reference beacons and antennas, accuracy can be greatly improved with methods known as Enhanced Observed Time Difference (E-OTD), Time of Arrival (TOA) and Angle of Arrival (AOA). See E-911.

Wi-Fi and A-GPS
Wi-Fi hotspots are also used for location detection. Databases of known hotspots are constantly updated, and positioning accuracy can be within 100 feet. However, Wi-Fi only works well in dense urban areas, and it serves to augment cellular positioning rather than be the sole locating method.

GPS offers the greatest accuracy (15-75 feet), but requires line of sight to the satellites. Since this cannot be assured in cities with tall buildings, most smartphones employ Assisted GPS (A-GPS), which helps them get the initial fix on the satellites by obtaining orbit and clock data from nearby cell towers.

A-GPS Is Used to Track Everything
Assisted GPS (A-GPS) devices are available to track cars, pets, children as well as anything that may move or be moved. Users can locate the device on the Web or be alerted via e-mail or text message if the A-GPS device moves outside a defined area. See vehicle tracking, Wi-Fi, GPS and iBeacon.
References in periodicals archive ?
Active mobile positioning data are collected using mobile tracing, and the location of a mobile phone is determined with a special query using radio waves (Positium 2006).
The technical solutions for mobile positioning are different for different network standards (Adams et al.
The fastest developing mobile positioning methods are based on a combination of mobile positioning and the satellite-based GPS system; they are the network-assisted GPS (A-GPS).
During the experimentation, EMT used ERICSSON, Ltd's MPS system for mobile positioning, enhanced by PinPoint Mgine software developed by ReachU, Ltd.
This notwithstanding, the majority of networks (except A-GPS) have problems with the relatively low accuracy of mobile positioning.
U-TDOA is the only high accuracy mobile positioning technology deployed today that can find cell phone users regardless of the type of phone in use or the software residing on that phone.
As the voice ARPU declines, MVNOs need to execute effective mobile data strategies and innovative ways to differentiate their services to high-margin mobile entertainment, mobile positioning, mobile advertising and mobile commerce services," said Alex Besen, founder of The Besen Group LLC.
Navman Limited, a unit of the Brunswick New Technologies division of Brunswick Corporation, is a recognized world leader in the design, manufacture and marketing of high reliability GPS, marine, vehicle navigation and mobile positioning and communication.
Learn more about companies that are actually leveraging mobile positioning such as A-GPS and TDOA to offer location-based services (LBS).
Nasdaq:TRDO), a global provider of integrated data and telecommunications solutions, today announced that its wireless 9-1-1 call routing systems have processed more than 50 million wireless 9-1-1 calls since August 2002, when Intrado deployed its Mobile Positioning Center (MPC) and Gateway Mobile Location Center (GMLC).
com/reports/c20794) has announced the addition of Mobile Positioning in GSM Networks to their offering.
This publication provides the user with an easy to understand, presentation that includes detailed notes (Notes View of PPT document) to facilitate understanding of mobile positioning systems for GSM.