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Wi-Fi positioning system (WPS, WiPS or WFPS) is a geolocation system that uses the characteristics of nearby Wi‑Fi access points to discover where a device is located. [1]It is used where satellite navigation such as GPS is inadequate due to various causes including multipath and signal blockage indoors, or where acquiring a satellite fix would take too long. [2]
An indoor location tracking map on a mobile phone. Mobile phone tracking is a process for identifying the location of a mobile phone, whether stationary or moving. . Localization may be affected by a number of technologies, such as the multilateration of radio signals between (several) cell towers of the network and the phone or by simply
4G provides, in addition to the usual voice and other services of 3G, mobile broadband Internet access, for example to laptops with wireless modems, to smartphones, and to other mobile devices. Potential and current applications include amended mobile web access, IP telephony , gaming services, high-definition mobile TV , video conferencing, 3D ...
Mobile virtual network operators (MVNOs) in the United States lease wireless telephone and data service from the four major cellular carriers in the country—AT&T Mobility, Boost Mobile, T-Mobile US, and Verizon—and offer various levels of free and/or paid talk, text and data services to their customers.
This protocol has been prepared by Location Interoperability Forum (LIF: Open Mobile Alliance in nowadays) to provide a simple and secure API (Application Programmer’s Interface), but also could be used for other kinds of location servers and entities in the wireless network. The API is based on XML and is defined to be transported in HTTP or ...
AT&T cellphone users across America were experiencing outages Thursday that cut off their access to cellular service.. For now, the company is advising users to connect to Wi-Fi to access ...
3 Macau launched in 2000 providing GSM dual-band services. In 2007, they launched 3G services. In 2008, 3 Macau brought the iPhone to Macau an agreement with Apple. Till now, they are providing both 3G and 4G services. In the 2G and 3G eras, it was the second largest mobile operator in Macau.
4G is the fourth generation of cellular network technology, succeeding 3G and designed to support all-IP communications and broadband services, enabling a variety of data-intensive applications. [1]