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<h2> Impact on BSS performance</h2>

<p><a href="NED?action=retrieve&amp;identifier=dn04111589&amp;edition=1&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=ned_8#ned_8" onclick="sync(this);return true" shape="rect">OMU signalling</a></p>


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<h3>Impact on BTS units</h3>

<p>EQoS has no impact on BTS units.</p>
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<h3>Packet switched (PSW) territory planning</h3>

<p>In priority-based quality of service, dimensioning plans
are based on estimating the service mix and its QoS requirements, including
factors such as throughput, delay and max BLER. With EQoS, the packet switched
 territory must enable enough resources to  support Real Time services (for
example Video/Audio Streaming) as well as existing and new Non-Real Time services
(for example web browsing and email).</p>
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<h3>EQoS impact on CSW services</h3>

<p>When the CS Radio Resource Manager asks the PCU for a permission
to downgrade PSW resources either to allocate a CS call or to maintain the
territory margin, the PCU may refuse the request. The PCU2 may not allow the
downgrade in order to guarantee the bit rates; for example CSW calls may not
necessarily have priority over PSW calls.</p>
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