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Assisted GPS _A-GPS_ FAQ

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					Assisted GPS (A-GPS) FAQ

1   Q   What is Assisted GPS?
    A   Assisted GPS (A-GPS), is a telco dependent system which can, improve the performance
        of GPS-capable mobile phones.

2   Q   How does A-GPS help me connect to GPS faster?
    A   Normal GPS operation uses signals from GPS satellites. In very poor signal conditions,
        e.g. In a city these signals may suffer multipath where signals bounces off buildings, or be
        weakened by passing through walls or tree cover. When first turned on in these
        conditions, non-assisted GPS navigation device may not be able to compute these broken
        signals, rendering them unable to function until a clear signal can be received
        continuously.

        An A-GPS system can address these problems by using an assistance server. A typical A-
        GPS-enabled cell phone will use a data connection (3G GPRS, PC connection, or other)
        to contact the assistance server for A-GPS information.

3   Q   Will there be any cost if A-GPS is used on my phone?
    A   There may be charge from your mobile phone service provider if GPRS data connection is
        used to download the A-GPS data. If your phone has the option to download the A-GPS
        data via a PC, then there will be no cost.

4   Q   Which Samsung mobile phones are equipped with A-GPS?
    A   Windows Phone:
           • i900 Omnia (A-GPS is labeled as “Enhance GPS”)
           • i8000 Omnia II (A-GPS is labeled as “XTRA”)
           • i780 (A-GPS is labeled as “Enhance GPS”)

        Symbian S60:
           • i8910 Omnia HD (A-GPS is labeled as “GPS+”)
           • Innov8 (A-GPS is labeled as “GPS+”)

				
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Description: A-GPS (Assisted GPS) which assisted GPS technology, it can improve the performance of GPS satellite positioning system. Base stations by mobile operators can quickly locate it, is widely used with GPS-enabled mobile phone. GPS radio signals via satellite to locate. When the poor signal conditions, such as a city, many of these signals may be irregular buildings, walls or trees weakened. In such conditions, the non A-GPS navigation device may not be fast positioning, while the A-GPS base station system operator can quickly locate information.