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<h1>Overview of Enhanced TRX Prioritisation in TCH Allocation</h1>

<p>With Enhanced TRX Priorisation in TCH Allocation BCCH TCHs
are allocated with a priority to non-AMR GSM mobiles.</p>


<p>The robustness of AMR codecs and frequency hopping allow
AMR mobiles to maintain the quality of speech service under lower C/I radio
conditions than non-AMR GSM mobiles can do. Therefore with AMR, more traffic
can be supported and tighter reuse schemes in non-BCCH TRXs can be applied.</p>


<p>However, operators supporting the use of AMR still have
to support also non-AMR users up to some extent till the AMR penetration has
reached 100%. Even for those operators deploying full AMR from the beginning
still the possibility to support non-AMR roamers has to be provided. </p>


<p>Enhanced TRX Priorisation in TCH Allocation enables an
operator to provide a better signal quality for non-AMR mobiles in cells that
are configured according to AMR network dimensioning guidelines by allocating
them to TCHs in BCCH TRX which is providing higher signal strength than other
TRXs.</p>


<p>Enhanced TRX Priorisation in TCH Allocation is operating
software.</p>


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<h2>Benefits
of Enhanced TRX Priorisation in TCH Allocation</h2>

<p>Signal quality for non-AMR GSM mobiles in AMR network in
low C/I radio conditions has been improved.</p>
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<h2>Related
topics</h2>

<p><a href="NED?action=retrieve&amp;identifier=dn03503304&amp;edition=2&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=dec331039451#dec331039451" onclick="sync(this);return true" shape="rect">System impact of Enhanced TRX Prioritisation
in TCH Allocation</a></p>


<p><a href="NED?action=retrieve&amp;identifier=dn03514598&amp;edition=2&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=dec33141377#dec33141377" onclick="sync(this);return true" shape="rect">Activating Enhanced TRX Priorisation in
TCH Allocation </a></p>


<p><a href="NED?action=retrieve&amp;identifier=dn03514605&amp;edition=2&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=dec33144231#dec33144231" onclick="sync(this);return true" shape="rect">Deactivating Enhanced TRX Priorisation in
TCH Allocation </a></p>
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