Assisted GPS (A-GPS) project - UU

Mobile ArtsOverviewProject:

Assisted GPS (A-GPS) project

Johan BlomMobile Arts

August 31, 2005

Johan Blom Mobile Arts Assisted GPS (A-GPS) project

Mobile Arts

I Founded in February 2001I HQ in Stockholm

I Branch offices in UK and Russia

I 14 employees

I Strategy: Concentrate on doing what we know bestI Leading edge competence in and experience from development

of GSM/UMTS/Telecom products.I Most sales through larger Partners

I Telecom products for operator domain, i.e. highly reliable etc.

Mobile Arts

I 14 employeesI Strategy: Concentrate on doing what we know best

I Leading edge competence in and experience from developmentof GSM/UMTS/Telecom products.

I Most sales through larger Partners

Mobile Arts

I 14 employeesI Strategy: Concentrate on doing what we know best

I Leading edge competence in and experience from developmentof GSM/UMTS/Telecom products.

I Most sales through larger Partners

GSM/UMTS network

LocationApplication

HLRSS7

GSM core networkGGSN

LocationServer

GSM/UMTS network

LocationApplication

HLRSS7

LocationServer

GPSServer

Project Goals

I Implement GPS server

I Implement Demo Location Application

I Test in real GSM network

A-GPS serverDemo/Test applicationEnvironment

GPS Server

I The GPS server aids the mobile with calculating the positionI Advantages: Saves time and battery power

I Tasks:I Receives approximate position from location serverI Fetch latest info on satellite positions etc from internetI Pick satellites closest to the approximate positionI if MS-Based → Forward assistance data to mobile and let the

mobile calculate the positionI if MS-Assisted → Calculate the position

I Help from Geodesy department at KTH with algorithmsI Will provide a report with the necessary info

I Location Server implemented in ErlangI Mobile Arts will provide an Erlang API

GPS Server

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LocationApplication

GPSServer (on Internet)

Reference Data

LocationServer

Network application

I Examples:I Tracking of closest taxi cab, delivery guy etcI Presence-dependent push-content, such as traffic information

and weather forecasts

I InterfaceI Mobile Location Protocol (XML based standard)I Subset implemented by Mobile Arts - will provide spec

I We want a tool that allows to show a map with the currentposition of the GPS mobile

Network application

I Examples:I Tracking of closest taxi cab, delivery guy etcI Presence-dependent push-content, such as traffic information

and weather forecasts

I InterfaceI Mobile Location Protocol (XML based standard)I Subset implemented by Mobile Arts - will provide spec

I We want a tool that allows to show a map with the currentposition of the GPS mobile

Network application environment

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HLRSS7

GPSServer

LocationApplication

Erlang API

LocationServer

Mobile application

I Examples:I Navigation servicesI “Friend Finder”

I InterfaceI Implement Java class in phone to access locationI Use GPRS to send data

Mobile application architecture

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JAVAenabled

GPSServer

Erlang API

LocationServer

Terminal

I Terminal from Mitac

I Pocket PC based

I SiRF A-GPS chipset

Practical Constraints

I Access to Mobile Arts Location ServerMobile Arts will provide:

I API documentationI Source for demo/trial version of the Location Server

I Access to GSM networkTwo possibillities:

I Use Uppsala University GSM networkI Use “live” network in Russia

I Access to Mobile TerminalI Promised delivery of terminal in end of SeptemberI Siemens has announced similar phone

I Access to Map dataI Will look in to this further...

Assisted GPS (A-GPS) project - UU

Documents

Transcript of Assisted GPS (A-GPS) project - UU

UU 71/2010 VS UU 24/2005

Assisted GPS

UU PAPER-1 UU Roll No. AA UU...1-AA ] [ 3 ] [ P.T.O. UU UU UU UU UU UU UU UU UU UU UU UU UU 003. The trajectory of a projectile in a vertical plane is y x x=a b-2 where a band are

Field Test Assessment of Assisted GPS and High Sensitivity GPS Receivers under Weak/ Degraded Signal Conditions

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ION Newsletter, Volume 19 Number 4 (Winter 2009-2010) · put GPS in cell phones: assisted-GPS, massive parallel correlation, high sensitivity, coarse time navigation, decoding weak

Assisted GPS (A-GPS) Application Note · A brief GPS Introduction A brief GPS Introduction The description of the GPS system is beyond the scope of this document. The reader that

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