Symbian3/PDK/Source/GUID-AB397519-AE26-5DBC-8D00-1961E2E0F734.dita
author Dominic Pinkman <dominic.pinkman@nokia.com>
Fri, 16 Jul 2010 17:23:46 +0100
changeset 12 80ef3a206772
parent 9 59758314f811
child 14 578be2adaf3e
permissions -rw-r--r--
Week 28 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 1897, Bug 344, Bug 2681, Bug 463, Bug 1522.
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59758314f811 Week 23 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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<?xml version="1.0" encoding="utf-8"?>
59758314f811 Week 23 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
59758314f811 Week 23 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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<!-- This component and the accompanying materials are made available under the terms of the License 
59758314f811 Week 23 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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"Eclipse Public License v1.0" which accompanies this distribution, 
59758314f811 Week 23 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
Dominic Pinkman <dominic.pinkman@nokia.com>
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and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
59758314f811 Week 23 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
Dominic Pinkman <dominic.pinkman@nokia.com>
parents: 5
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<!-- Initial Contributors:
59758314f811 Week 23 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
Dominic Pinkman <dominic.pinkman@nokia.com>
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    Nokia Corporation - initial contribution.
59758314f811 Week 23 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
Dominic Pinkman <dominic.pinkman@nokia.com>
parents: 5
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Contributors: 
59758314f811 Week 23 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
Dominic Pinkman <dominic.pinkman@nokia.com>
parents: 5
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-->
59758314f811 Week 23 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
Dominic Pinkman <dominic.pinkman@nokia.com>
parents: 5
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<!DOCTYPE concept
59758314f811 Week 23 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
59758314f811 Week 23 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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<concept xml:lang="en" id="GUID-AB397519-AE26-5DBC-8D00-1961E2E0F734"><title>A-GPS Location Manager Overview</title><shortdesc>The A-GPS Location Manager is responsible for obtaining a location from A-GPS hardware. </shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody><section><title>Purpose</title> <p>The A-GPS Location Manager is used by the Location Server and the Network Request Handler. It loads an A-GPS Integration Module to obtain positions from A-GPS hardware. </p> </section> <section><title>Required background</title> <p>The reader should be familiar with the <xref href="GUID-7233BC33-6060-5D6B-A5D2-01135F059337.dita">LBS architecture</xref>. </p> </section> <section><title>Key concepts and terms</title> <dl><dlentry><dt>Assisted GPS (A-GPS)</dt> <dd><p>A-GPS uses assistance data from the network to reduce the Time To First Fix (TTFF) </p> </dd> </dlentry> </dl> </section> <section><title>Architecture</title> <p>The A-GPS Location Manager is a process that runs as part of the LBS subsystem. It is responsible for obtaining a location from A-GPS hardware. </p> <p>The Location Server sends requests for location to the A-GPS Location Manager when the position quality criteria specified for an MO-LR (self locate) requires a GPS fix (or when no position quality criteria are specified). </p> <p>The Network Request Handler may send a request for location to the A-GPS Location Manager if the position quality criteria specified for an MT-LR or MO-LR (transmit to third party) requires a GPS fix. </p> <p>The A-GPS Location Manager obtains GPS data from GPS hardware through an A-GPS Integration Module. The A-GPS Location Manager also interacts with the Network Gateway to obtain assistance data from the network. </p> <fig id="GUID-691D4545-39EC-5785-9C23-4529094FF3C1"><title>
59758314f811 Week 23 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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             Figure 1. A-GPS Location Manager.
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80ef3a206772 Week 28 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 1897, Bug 344, Bug 2681, Bug 463, Bug 1522.
Dominic Pinkman <dominic.pinkman@nokia.com>
parents: 9
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          </title> <image href="GUID-F322F81A-40D3-5365-A437-73B60DD31D5E_d0e454561_href.png" placement="inline"/></fig> </section> <section><title>APIs</title> <p>The A-GPS Location Manager is an internal component of the LBS subsystem. It does not expose any published APIs. </p> </section> <section><title>Typical uses</title> <p>The A-GPS Location Manager is only used internally by the LBS subsystem. </p> </section> </conbody><related-links><link href="GUID-5DD17088-1F9C-5810-8143-5067A2B18330.dita"><linktext>A-GPS Location Data Source API</linktext> </link> <link href="GUID-B66A425F-3C65-5BF5-ADA2-E25EB7267681.dita"><linktext>A-GPS Reference Module</linktext> </link> </related-links></concept>