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<div class="div">
<h1>Activating and testing Dual Band (PGSM 900 and EGSM 900)</h1>

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<div class="purpose">
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<div class="topic">
<h2>Purpose</h2>

<p>You can test this functionality to see if the traffic control
between PGSM 900 and EGSM 900 is activated in the BSC. Set up a call to a
PGSM 900 cell and make successive handovers between the PGSM 900 and EGSM
900 cells. You can verify the test results from BSC clear code measurements
that indicate the number of successful handovers.</p>
</div>
</div>


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<div class="sequence">
<h2>Steps</h2>

<layer visibility="hide"><p class="title"><span class="ExpCollAll" onclick="ExpCollAll(false); return false"><img alt="Expand/collapse all" border="0" class="ExpColl" name="blockTitle" src="NED?action=retrieve&amp;identifier=dn01157982&amp;edition=1&amp;language=none&amp;coverage=global&amp;encoding=gif&amp;component=data&amp;item=data" />
Expand/collapse all</span></p>
</layer>
<ol class="type-odd">
<li type="1"><a name="nov2921112524" shape="rect"></a>
<div class="action-in-short">
<h3>Tune BTS1 and BTS2
to a proper frequency band (BTS1 to PGSM 900, BTS2 to EGSM 900).</h3>
</div>
</li>
<li type="1"><a name="nov212162919111" shape="rect"></a>
<div class="action-in-short">
<h3>Define the BTSs to
be adjacent to each other (EAC).</h3>
</div>
</li>
<li type="1"><a name="nov212162921113" shape="rect"></a>
<div class="action-in-detail">
<a name="block1Title" shape="rect"></a>
<div>
<p class="title"><span class="block-title" onclick="expandBlock('block1'); return false"><layer visibility="hide"><img alt="Expand/collapse" border="0" class="ExpColl" name="block1Title" src="NED?action=retrieve&amp;identifier=dn01157982&amp;edition=1&amp;language=none&amp;coverage=global&amp;encoding=gif&amp;component=data&amp;item=data" /></layer> For testing the feature
activation, take the power budget handover (PBGT HO) into use.</span></p>
</div>


<div class="text" id="block1Text">
<p>The BTSs used in the testing are the following:</p>


<div class="def-list">
<table class="def-list">
<tbody>
<tr>
<th class="term" colspan="1" rowspan="1"><div class="term">
BTS1</div>
</th>
<td class="def" colspan="1" rowspan="1"><div class="def">
accessed cell, allocated from the PGSM
900 band, adjacent to BTS2</div>
</td>
</tr>
<tr>
<th class="term" colspan="1" rowspan="1"><div class="term">
BTS2</div>
</th>
<td class="def" colspan="1" rowspan="1"><div class="def">
allocated from the EGSM 900 band, adjacent
cell to BTS1</div>
</td>
</tr>
</tbody>
</table>
</div>


<p>The handovers to be made between PGSM 900 and EGSM 900
cells are power budget handovers with negative margins (see <em>RF Power
Control and Handover Algorithm</em> in BS/TCSM documentation).</p>


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<dl class="note-notification">
<dt class="note-caption">Note</dt>
<dd>These values are only for test purposes. The original parameter
values should be restored after testing.</dd>
</dl>
</div>
</div>
</li>
<li type="1"><a name="nov212162921114" shape="rect"></a>
<div class="action-in-short">
<h3>Enable the PBGT HO
in the BTSs (EHG).</h3>
</div>
</li>
<li type="1"><a name="nov212162922116" shape="rect"></a>
<div class="action-in-short">
<h3>Set the PBGT HO margin
from cell BTS1 to adjacent cell BTS2 to value -24 dB to trigger the PBGT HO
(EAM).</h3>
</div>
</li>
<li type="1"><a name="nov212162937117" shape="rect"></a>
<div class="action-in-detail">
<a name="block2Title" shape="rect"></a>
<div>
<p class="title"><span class="block-title" onclick="expandBlock('block2'); return false"><layer visibility="hide"><img alt="Expand/collapse" border="0" class="ExpColl" name="block2Title" src="NED?action=retrieve&amp;identifier=dn01157982&amp;edition=1&amp;language=none&amp;coverage=global&amp;encoding=gif&amp;component=data&amp;item=data" /></layer> Set the PBGT HO margin
from cell BTS2 to adjacent cell BTS1 to value -24 dB to trigger the PBGT HO
(EAM).</span></p>
</div>


<div class="text" id="block2Text">
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<dl class="note-notification">
<dt class="note-caption">Note</dt>
<dd>The existing values of the PBGT HO margins should be restored
after the test</dd>
</dl>
</div>
</div>


<div class="expected">
<h3>Expected outcome</h3>

<ul>
<li><p>Dual Band is activated in the BSC.</p>
</li>
<li><p>A call is set up to the PGSM 900 cell,
and successive handovers between PGSM 900 and EGSM 900 cells are made</p>
</li>
<li><p>The test results are verified from
BSC clear code measurements that indicate the number of successful handovers.</p>
</li>
</ul>
</div>
</li>
<li type="1"><a name="nov212162938118" shape="rect"></a>
<div class="action-in-short">
<h3>Reset the counters
of BSC clear code measurement (TVR).</h3>
</div>
</li>
<li type="1"><a name="nov212162938119" shape="rect"></a>
<div class="action-in-short">
<h3>Wait for one minute
for the counter reset.</h3>
</div>
</li>
<li type="1"><a name="nov212162939120" shape="rect"></a>
<div class="action-in-detail">
<a name="block3Title" shape="rect"></a>
<div>
<p class="title"><span class="block-title" onclick="expandBlock('block3'); return false"><layer visibility="hide"><img alt="Expand/collapse" border="0" class="ExpColl" name="block3Title" src="NED?action=retrieve&amp;identifier=dn01157982&amp;edition=1&amp;language=none&amp;coverage=global&amp;encoding=gif&amp;component=data&amp;item=data" /></layer> Set up one call to
BTS1.</span></p>
</div>


<div class="text" id="block3Text">
<p>The BSC receives radio link measurements which can trigger
handovers between BTS1 and BTS2.</p>
</div>
</div>
</li>
<li type="1"><a name="nov212162939121" shape="rect"></a>
<div class="action-in-short">
<h3>Wait for two minutes.</h3>
</div>
</li>
<li type="1"><a name="nov212162940122" shape="rect"></a>
<div class="action-in-short">
<h3>Disconnect the call.</h3>
</div>
</li>
<li type="1"><a name="nov212162940123" shape="rect"></a>
<div class="action-in-short">
<h3>Verify handovers.</h3>
</div>
</li>
<li type="1"><a name="nov212162941124" shape="rect"></a>
<div class="action-in-short">
<h3>Verify that counter
number 12, internal_inter_ho_success, is updated in both cells (TVI).</h3>
</div>
</li>
</ol>
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