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U-TDOA U-TDOA, or Uplink-Time Difference of Arrival, is a wireless location technology that relies on sensitive receivers typically located at the cell towers to determine the location of a mobile phone. == How does U-TDOA work? == U-TDOA determines location based on the time it takes a signal to travel from a mobile phone to each of the sensitive receivers called Location Measurement Units (LMUs). By using the timing information from multiple LMUs, U-TDOA calculates the mobile phone’s location. Because U-TDOA is a network-based location technology, it does not require the mobile phone to have any special chip, hardware, or software in it. As a result, it can locate any type of mobile phone. Since U-TDOA requires physical access to the Cellular Network's BTS, it's only available to the owner of the sensor network, which is typically the carrier. Therefore, the solution is generally not available in Roaming.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「U-TDOA」の詳細全文を読む
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