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(DFCA) </a></td>
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<h2>Interworking with other features</h2>

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<h3>Functionality required by DFCA </h3>

<ul>
<li><p><em>BSS Synchronisation</em> provides timeslot-level synchronisation
between base stations, which is required by DFCA. DFCA needs to have information
regarding the TSL, MA list, and MAIO usage in the neighbouring cells to estimate
interference. This can only be done if all the BTSs are synchronised to the
same clock (GPS). </p>


<p>For more information, see <a href="NED?action=retrieve&amp;identifier=dn04122203&amp;edition=1&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=dec331522341#dec331522341" onclick="sync(this);return true" shape="rect">BSS
Synchronisation</a>.</p>
</li>
</ul>
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<h3>SW products that are not supported </h3>

<p>A DFCA BTS is defined with the <span class="parameter-sem">DFCA Mode</span>
parameter. A DFCA TRX is defined with the <span class="parameter-sem">DFCA Indication</span>
parameter in a DFCA BTS. The following SW products are not supported in a
DFCA BTS:</p>


<ul>
<li><p>Intelligent Underlay-Overlay (IUO) and Intelligent Frequency
Hopping (IFH)</p>
</li>
<li><p>Intelligent Coverage Enhancement (ICE)</p>
</li>
<li><p>Extended Cell Range</p>
</li>
<li><p>Dynamic Hot Spot</p>
</li>
<li><p>Antenna Hopping</p>
</li>
<li><p>Base Band Frequency Hopping</p>
</li>
<li><p>BCCH Super Reuse</p>
</li>
</ul>


<p>The following SW products are not supported in a DFCA TRX:</p>


<ul>
<li><p>(E)GPRS</p>
</li>
<li><p>SDCCH, Dynamic SDCCH</p>
</li>
<li><p>FACCH Call Setup</p>
</li>
<li><p>Pre-emption</p>
</li>
<li><p>High Speed Circuit-Switched Data</p>
</li>
<li><p>IDD and 4UD of Nokia Smart Radio Concept (SRC)</p>
</li>
</ul>
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<h3>SW products with special considerations for
DFCA</h3>

<ul>
<li><p>Advanced Multilayer Handling (AMH) and Direct Access to Desired
Layer/Band (DADL/B) </p>


<p>Regular and DFCA channels are seen as one resource group for the load
calculations used in AMH and in DADL/B.</p>
</li>
<li><p>Automated Planning Enhancements (APE)</p>


<p>If both DFCA and APE are used in a BTS, the BSC uses the BA list definitions
made for APE. To ensure the proper functioning of DFCA, you must include all
BCCH frequencies in the used MeasBAList.</p>
</li>
<li><p>IMSI Based Handover to GSM</p>


<p>IMSI Based Handover to GSM is not recommended for simultaneous use with
DFCA, because it weakens the functionality of DFCA considerably. IMSI Based
Handover to WCDMA can be used with DFCA without restrictions.</p>
</li>
<li><p>Power Optimisation in Handover</p>


<p>Not needed for connections that are to be assigned to a DFCA TRX. The
DFCA algorithm makes an initial power control based on C/I for a DFCA connection.</p>
</li>
<li><p>Queuing</p>


<p>If the DFCA algorithm cannot find a proper DFCA channel due to soft
blocking, only the non-DFCA resources can be queued for.</p>
</li>
<li><p>Interference Band Recommendation</p>


<p>Not used on the DFCA layer since it is redundant.</p>
</li>
</ul>
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