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  1. #1
    Registered User
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    some questions about AGPS and Network based Positioning

    It seams non-gnss positioning becoming more and more popular in this board. I have some questions about AGPS and Network based positioning methods as well.
    1)Does anyone have some ideas about the accuracy of both above methods and AGPS performances(for example: initial time..recapture time after GPS signal lost) ?
    2)Is this possible to retrieve the Cell-IDs and RSSI of not only the one mobile phone connected, but also some other base stations.
    3)Where i can find some installable s60 applications running on mobile phone for AGPS and Network based positioning tests(S60 3rd FP1 emulator does not support those two methods)?

    Thanks
    --------------------------------------------------------
    Ling

  2. #2
    Nokia Developer Champion
    Join Date
    Sep 2007
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    915

    Re: some questions about AGPS and Network based Positioning

    Quote Originally Posted by eling0167 View Post
    It seams non-gnss positioning becoming more and more popular in this board. I have some questions about AGPS and Network based positioning methods as well.
    1)Does anyone have some ideas about the accuracy of both above methods and AGPS performances(for example: initial time..recapture time after GPS signal lost) ?
    2)Is this possible to retrieve the Cell-IDs and RSSI of not only the one mobile phone connected, but also some other base stations.
    3)Where i can find some installable s60 applications running on mobile phone for AGPS and Network based positioning tests(S60 3rd FP1 emulator does not support those two methods)?

    Thanks

    This Might Help for different


    From www.getjar.com you might find some application.

  3. #3
    Registered User
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    Jan 2008
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    102

    Re: some questions about AGPS and Network based Positioning

    1)Does anyone have some ideas about the accuracy of both above methods and AGPS performances(for example: initial time..recapture time after GPS signal lost) ?
    I found a paper Mobile Location Applications and Enabling Technologies ION GPS 2002.It presents the detail of those techniques.
    2)Is this possible to retrieve the Cell-IDs and RSSI of not only the one mobile phone connected, but also some other base stations.
    I do not think it is possible to retrieve all the Cell-ids.

    3)Where i can find some installable s60 applications running on mobile phone for AGPS and Network based positioning tests(S60 3rd FP1 emulator does not support those two methods)?
    Signing the LocationRefAppForS60 example in s60ex.
    --------------------------------------------------------
    Ling

  4. #4
    Registered User
    Join Date
    Oct 2008
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    3

    Re: some questions about AGPS and Network based Positioning

    Hi,

    1)
    AGPS
    Accuracy: 4-40m. Init. Time: 30sec

    Cell Id
    Accuracy: 150-250m. Init.Time: 5sec

    2) No, it's not possible.

    3) I really don't know, sorry

  5. #5
    Registered User
    Join Date
    Jan 2008
    Location
    Finland
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    102

    Re: some questions about AGPS and Network based Positioning

    I did some tests just now. Network based method,3.5G network,HRMS 117m. Edge net work,HRMS 94m. Better than my expectation. Traingulation method must be used instead of one connected Cell-ID. The accurate is round 1km in google mobile map.
    Does anyone know which traingulation technique used in Nokia Location Acqusition API?E-OTD,AOA or TDOA?
    --------------------------------------------------------
    Ling

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