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<div class="div">
<h1>Power System Management and Enhancement</h1>

<p>The Power System Management consists of a Power System
Controller (PSC) within the BBU/SiSS (Battery Backup Unit / Site Support System)
cabinet, which has been implemented utilising the Q1 bus. In addition, a CCUA
controller with Q1 interface unit is supported. The feature provides a method
to control and monitor the BBU/SiSS system. The main reason for the development
is to provide network operators with more accurate information about the power
system status, the ability to control the system remotely, and to maximise
the electrical efficiency of the batteries and charging system. This enables
more reliable information about the system and also leads to fewer service
visits.</p>


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<img alt="urn:mars:dn0469947:1:en:global:tiff:data:data" border="0" src="NED?action=retrieve&amp;identifier=dn0469947&amp;edition=1&amp;language=en&amp;coverage=global&amp;encoding=gif&amp;component=data&amp;item=data" /><p class="figure-caption">Figure: Power System Management</p>
</div>


<p>The Power System Management feature has been developed
for ExtraTalk 2 BSS Site Support System. The PSMQ1A interface unit is needed
to enable the operation of the PSM. This board will be incorporated inside
the cabinet.</p>


<p>The purpose of the Power System Management is to:</p>


<ul>
<li><p>Store BBU/SiSS configuration information</p>
</li>
<li><p>Collect and log BBU/SiSS data and alarms</p>
</li>
<li><p>Send alarm signals to the BTS when
required</p>
</li>
<li><p>Perform a regular battery condition
test, initiated remotely if required</p>
</li>
<li><p>Allow Site Support System alarms, controls
and logging information to be accessed locally</p>
</li>
<li><p>Honour existing NMS security mechanisms.</p>
</li>
</ul>


<p>All existing BBU/SiSS features outside the scope of the
Power System Management have been preserved. The PSM is basically a system
where the operator can from the NMS manually and remotely check the state
of the BBU.</p>


<p>Information gained is more precise than a plain alarm indication,
for example, voltage level in batteries; the operator needs to know the condition
of the batteries to this level of detail to calculate the current BB capability
of the BBU.</p>


<p>Site visits can be avoided in the future. Customers also
regard modems as an extra cost since there is transmission connection to the
site anyway.</p>


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<div class="topic">
<h2>Node
Manager Access</h2>

<p>It is possible to use the node manager software in three
scenarios: At the NMS (mandatory), at the LMP of the BBU/SiSS Q1 interface
card (mandatory) and remotely by a modem link to the NMS (important).</p>


<p>The PSMQ1A interface card is the interface unit which will
fit in BBUs / SiSSs which support ExtraTalk 2. The system has a standard user
interface at the NMS to manage the BBU/SiSS. The solution uses the internal
Q1 bus for remote control and data transmission between NMS-BSC-BTS-BBU. Alarms
and test information is also transferred in the bus.</p>


<p>The PSMQ1A provides all the SiSS alarms and readings available
from the cabinet's controller unit, in addition to the PSM specific alarms
and data.</p>


<p>It is possible to download new software into the PSM card/module.
Provision is made to download new software through the PSM card/module into
units controlled by the PSM card/module, principally the PCU or equivalent,
if the PCU has the facility to be FLASH upgraded. This has been applied to
the current products, which the PSM is used in and have the ability to be
flashed.</p>


<p>The same management tool, the PSMMan, replaces all the
existing management tools for the current Nokia BBU/SiSS and is the management
tool also for all UltraSite family power systems. This provides better information,
a better user interface, and commonality of information between different
types of power systems.</p>


<p>The battery management will be upgraded to incorporate
multiple test results at the node. Customers have more access with the new
PSM on a local mode. In a local mode, the user has full control to all parameters
in case of default parameters need to be changed.</p>


<p>Functionality of the PSM has been implemented utilising
the existing Q1 bus. A usage of the PSM allows softwares to be upgraded remotely
into Q1IA adapter or CCUA. Software download into the BBU/SiSS controller
is also supported if it has the facility to be FLASH upgraded.</p>


<p>The PSM consists of:</p>


<ul>
<li><p>Power systems with Q1IA (Q1 Interface
unit version A) adapter</p>
</li>
<li><p>Power systems with CCUA (Cabinet Controller
Unit version A) controller with Q1 interface unit</p>
</li>
<li><p>PSM Node Manager (PSMMan) software</p>
</li>
<li><p>NMS/NetAct integration software’s</p>
</li>
</ul>


<p>Power systems using/equipped with Q1IA adapter are compatible
from the BSS8 onwards and with the CCUA from the BSS9 onwards excluding the
Talk BTS support.</p>
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