mobile positioning


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mobile positioning

Pinpointing the location of a vehicle or mobile device. Also called "geotracking," mobile positioning is a location-based service (LBS) that is used for emergency purposes as well as proximity marketing, traffic updates, fleet management and asset tracking. Mobile positioning is also used for people tracking; for example, parents can install software in their children's smartphones to monitor their whereabouts (see Big Mother). To track a location, cellular networks, Wi-Fi and GPS are employed alone or in combination.

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 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 email 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 ?
What I have called the ethnographic perspective is, at its best, an example of mobile positioning. What the ethnographer can du, in a way that it is very hard for any particular informant tu du, is shift the point of vantage repeatedly, placing first this ethnicity in the foreground, and then another, within some fairly restricted field.
Corporate enterprises account for 28% of all wireless development with most effort focused around applications addressing mobile e-mail, wireless portals, sales force automation, mobile positioning and customer relationship management (CRM).
"Sammons Preston has long been a leader in providing unique seating solutions," notes company group product manager Mike Gravel, "and the Alvema line has added to our depth." Sammons Preston has recently announced the introduction of the "Mio," a new mobile positioning system from Alvema.
The robust, cost-effective platform includes a Mobile Positioning Center (MPC) and Gateway Mobile Location Center (GMLC) and offers second-generation features and choices currently unavailable from any other single vendor.
The design for 1800 or 1900 MHz networks that offer FMC-style services is different from that used by networks with mobile positioning. Mobile positioning implies wide geographic coverage, that is, competition on the basis of breadth of coverage.
Tenders are invited for Physical security of fixed and temporary mobile positioning sites and patrols using terrain vehicles for the needs of NIS a.d.
Wu, "Mobile positioning in mixed LOS/NLOS conditions using modified EKF banks and data fusion method," IEICE Transactions on Communications, vol.
Under the agreement, Ericsson would provide Suomen 2G with mobile network solutions for GSM, GPRS, EDGE and WCDMA, and Intelligent Network services like mobile positioning and related services.
Mobile positioning and tracking applications have come of age with the development of the Global Positioning System (GPS).
Hosted Mobile Positioning Center (MPC) and Hosted Position Determining Entity (HPDE) capabilities are now provided by TCS for E9-1-1 customers, who include wireless providers Bluegrass Cellular, Flat Wireless, NTCH-Cleartalk Colorado and Cricket Communications.
Finland's Nokia has won a contract to supply its mPosition mobile positioning solution to the Austrian operator ONE.