這網頁資料說：
For A-GPS, the network provides the Ephemeris data to the cell phone GPS receiver and this improves the TTFF. This can be achieved by incorporating a GPS receiver into the base station itself, and as this is sufficiently close in position to the mobile the data received by the base station is sufficiently accurate to be transmitted on to the mobiles. The base station receiver is obviously on all the time, and will be located in a position where it can "see" the satellites.
也就是說，基地台會輸出自己得到的所有單衛星的詳細星曆（ephemeris）給手機接收。
那麼，也就是說，基地台會給出自己的座標（ for 基地台定位）和本身收到的 ephemeris data ( for A-GPS）。
請問台灣所有基地台都有支援嗎？
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