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<div class="div">
<h1>Overview of Wireless Priority Service (WPS)</h1>

<p>The deployment of Wireless Priority Service allows qualified
and authorised National Security and Emergency Preparedness (NS/EP) users
to obtain priority access to radio <a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id04070#id04070" onclick="openSmallPopup(event,'NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id04070#id04070');return false" shape="rect" target="_blank">traffic channels</a>
in situations where Commercial Mobile Radio Service (CMRS) network congestion
is blocking call attempts. </p>


<p>Wireless Priority Service is based on a sub-set of the enhanced Multi
level Precedence and Pre-Emption (eMLPP) mechanism and is only provided upon
call-by-call invocation. The Nokia implementation uses the Queueing and Priority
feature in the BSS. WPS is specified by the US authorities and is thus targeted
to be used mainly in the US markets. Its main focus is in the Radio Resource
Management and in the implementation of counters for improving performance
management statistics.</p>


<p>In the RRM, WPS is implemented for handling exceptional traffic conditions
when radio resource congestion occurs and when WPS calls are therefore on
queue due to having encountered radio resource blocking. A percentage or number
(X) of a cell's radio resource capacity to serve call attempts is allocated
with preference to queued WPS calls. The remaining radio traffic channel capacity
(Y= 1-X) is allocated with preference to public user calls, in accordance
with the normal dynamics of call arrivals and capacity availability. </p>


<p>The present WPS implementation provides new functionality to collect
statistics on WPS users removed from the queue due to loss of radio contact
or due to the user having abandoned the call.</p>


<p>WPS is an application SW product and requires a valid licence
in the BSC. For more information on licensing, see <em>Installation of Licences
and the Management of Licences</em>. </p>


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<h2>Benefits
of Nokia solution</h2>

<p>Wireless Priority Service means improvements to traffic
channel allocation and queuing algorithms. It allows the service provider
to ensure that a reasonable amount of GSM radio capacity is made available
for the use of public users.</p>
</div>


<a name="nov1131745482" shape="rect"></a>
<dl class="note-notification">
<dt class="note-caption">Note</dt>
<dd><p>The use of WPS SOFTWARE is restricted in the U.S. and U.S.
TERRITORIES to NS/EP users authorised by the Office of the Manager, National
Communication System (OMNCS). ELIGIBLE CMRS PROVIDER deployment of these WPS
SOFTWARES must be coordinated with the OMNCS at the following address: </p>



<p>Office of the Manager</p>



<p>National Communications System </p>



<p>Attn: GETS Program Office </p>



<p>701 South Courthouse Rd. </p>



<p>Arlington, VA 22204-2198 </p>



<p>Email: gets@ncs.gov</p>
</dd>
</dl>


<a name="dec831244381" shape="rect"></a>
<div class="topic">
<h2>Related
topics</h2>

<ul>
<li><p><em>System impact of
Wireless Priority Service (WPS)</em></p>
</li>
<li><p><em>Overview of implementing Wireless
Priority Service (WPS)</em></p>
</li>
<li><p>For a description of WPS, see <em>Wireless Priority Service in BSC</em> in BSC/TCSM documentation.</p>
</li>
<li><p><em>FEATURE 519 A-interface
Priority Information Control and eMLPP</em> in the MSC documentation</p>
</li>
</ul>
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