Symbian3/PDK/Source/GUID-75539D46-4DE9-5522-AC02-FA1BFD465937.dita
author Dominic Pinkman <Dominic.Pinkman@Nokia.com>
Thu, 11 Mar 2010 18:02:22 +0000
changeset 3 46218c8b8afa
parent 1 25a17d01db0c
child 5 f345bda72bc4
permissions -rw-r--r--
week 10 bug fix submission (SF PDK version): Bug 1892, Bug 1897, Bug 1319. Also 3 or 4 documents were found to contain code blocks with SFL, which has been fixed. Partial fix for broken links, links to Forum Nokia, and the 'Symbian platform' terminology issues.

<?xml version="1.0" encoding="utf-8"?>
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and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
<!-- Initial Contributors:
    Nokia Corporation - initial contribution.
Contributors: 
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<!DOCTYPE concept
  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
<concept id="GUID-75539D46-4DE9-5522-AC02-FA1BFD465937" xml:lang="en"><title>Network
Characteristics of the QoS</title><shortdesc>This topic describes the concepts of the network characteristics
of the QoS. </shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>
<p>The Quality of Service (QoS) of any communication network is defined by
the bandwidth, reliability, and latency. The other defining factors such as
coverage, security and interoperability are taken as a provided by the user. </p>
<p>When the demand for the network services increases the network carriers
need a way to share the network resources among the subscribers. Some subscribers
demand a high bandwidth such as streaming video, others require basic characteristics
such as voice telephony and messaging. </p>
<p>The service provider must handle the competing demands and charge for them
appropriately. The service provider needs tools to limit the rate and volume
of the traffic entering and passing through the network. These tools must
adapt to the changes in the environment so that the resources available to
the network are allocated when required. </p>
<p>The QoS determines: </p>
<ul>
<li id="GUID-F8F09EBA-FBCF-5D05-AB95-B6096A628D60"><p>the actual performance
of the network. </p> </li>
<li id="GUID-BD0861C4-FE84-514F-954A-29E4CAC0B90A"><p>the network management
and the distribution of shared resources. </p> </li>
<li id="GUID-B0C51074-0175-5821-B188-ECC70F598F32"><p>the cost of carrying
the traffic so that any level of QoS can be charged at a reasonable rate. </p> </li>
</ul>
<p><note> Any QoS measurement must take a balanced account of all the three
factors. </note></p>
</conbody></concept>