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<p class="MsoNormal">Hello All,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We are currently working on providing the support of <span style="color:black">
Fast Ack/Nack Reporting(FANR) </span>feature in OsmoPCU.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We have Identified and listed major changes in OsmoPCU as below.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="color:black"><span style="mso-list:Ignore">1)<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]>Introduction of new header types in UL/DL<o:p></o:p></p>
<p class="MsoListParagraph" style="margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo2">
<![if !supportLists]><span style="color:black"><span style="mso-list:Ignore">a.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="color:black">Mainly due to presence of CES/P and PANI fields<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="color:black"><span style="mso-list:Ignore">2)<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]>Following Control Messages changes<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:10.0pt;margin-left:1.0in;mso-add-space:auto;text-indent:-.25in;line-height:115%;mso-list:l0 level2 lfo2">
<![if !supportLists]><span style="color:black"><span style="mso-list:Ignore">a.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]> Packet Downlink Assignment<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:10.0pt;margin-left:1.0in;mso-add-space:auto;text-indent:-.25in;line-height:115%;mso-list:l0 level2 lfo2">
<![if !supportLists]><span style="color:black"><span style="mso-list:Ignore">b.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]> Packet Uplink Assignment <o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:10.0pt;margin-left:1.0in;mso-add-space:auto;text-indent:-.25in;line-height:115%;mso-list:l0 level2 lfo2">
<![if !supportLists]><span style="color:black"><span style="mso-list:Ignore">c.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="color:#1F497D"> </span>EGPRS Packet Channel Request<o:p></o:p></p>
<p class="MsoListParagraphCxSpMiddle" style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:10.0pt;margin-left:0in;mso-add-space:auto;line-height:115%">
<span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoListParagraphCxSpMiddle" style="margin-bottom:10.0pt;mso-add-space:auto;text-indent:-.25in;line-height:115%;mso-list:l0 level1 lfo2">
<![if !supportLists]><span style="color:black"><span style="mso-list:Ignore">3)<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="color:#1F497D"> </span>MS Radio Capability<span style="color:#1F497D">
<o:p></o:p></span></p>
<p class="MsoListParagraphCxSpMiddle" style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:10.0pt;margin-left:1.0in;mso-add-space:auto;text-indent:-.25in;line-height:115%;mso-list:l0 level2 lfo2">
<![if !supportLists]><span style="color:black"><span style="mso-list:Ignore">a.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="color:#1F497D"> </span><span style="color:black">Extraction of Reduced Latency Capabilit</span><span style="font-size:10.0pt;line-height:115%;font-family:"Times New Roman",serif;color:black">y
</span><span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoListParagraphCxSpMiddle" style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:10.0pt;margin-left:1.0in;mso-add-space:auto;line-height:115%">
<span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="color:black"><span style="mso-list:Ignore">4)<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]>VTY interface changes to enable/disable the feature<o:p></o:p></p>
<p class="MsoListParagraph"><o:p> </o:p></p>
<p class="MsoListParagraph" style="margin-bottom:10.0pt;text-indent:-.25in;line-height:115%;mso-list:l0 level1 lfo2">
<![if !supportLists]><span style="color:black"><span style="mso-list:Ignore">5)<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="mso-fareast-language:ZH-CN">Downlink PAN Handling</span><o:p></o:p></p>
<p class="MsoListParagraph" style="margin-bottom:10.0pt;text-indent:-.25in;line-height:115%;mso-list:l0 level1 lfo2">
<![if !supportLists]><span style="color:black;mso-fareast-language:ZH-CN"><span style="mso-list:Ignore">6)<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="mso-fareast-language:ZH-CN">Uplink PAN Handling<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="color:black"><span style="mso-list:Ignore">7)<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="color:black;mso-fareast-language:ZH-CN">RLC window modification</span><span style="color:black"><o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo2">
<![if !supportLists]><span style="color:black"><span style="mso-list:Ignore">a.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]>Introduction of state variable to manage REPORTED and UNREPORTED<span style="color:#1F497D">
</span><span style="color:black">states </span>in UL direction<o:p></o:p></p>
<p class="MsoListParagraph" style="margin-left:1.0in;text-indent:-.25in;mso-list:l0 level2 lfo2">
<![if !supportLists]><span style="color:black"><span style="mso-list:Ignore">b.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]>Introduction of new state TENTATIVE_ACK in DL direction<o:p></o:p></p>
<p class="MsoListParagraph" style="margin-left:1.0in"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="color:black"><span style="mso-list:Ignore">8)<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]>TBF flow changes<o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="color:black"><span style="mso-list:Ignore">9)<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="color:black">Handling of Tentative Ack blocks during retransmission<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Note: There may be impacts on osmo-bts.<span style="color:#1F497D">
</span><span style="color:black">But the impacts has not been considered yet.</span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We plan to have a separate branch from master for this development.<o:p></o:p></p>
<p class="MsoNormal">Please let us know your valuable feedback.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal">Aravind Sirsikar<o:p></o:p></p>
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