R1-1701161.zip

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R1-1701161.zip
  • R1-1701161 On DL and UL phase noise tracking RS.docx
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<html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta charset="utf-8"> <meta name="generator" content="pdf2htmlEX"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <link rel="stylesheet" href="https://static.pudn.com/base/css/base.min.css"> <link rel="stylesheet" href="https://static.pudn.com/base/css/fancy.min.css"> <link rel="stylesheet" href="https://static.pudn.com/prod/directory_preview_static/627554489221806f9d32de80/raw.css"> <script src="https://static.pudn.com/base/js/compatibility.min.js"></script> <script src="https://static.pudn.com/base/js/pdf2htmlEX.min.js"></script> <script> try{ pdf2htmlEX.defaultViewer = new pdf2htmlEX.Viewer({}); }catch(e){} </script> <title></title> </head> <body> <div id="sidebar" style="display: none"> <div id="outline"> </div> </div> <div id="pf1" class="pf w0 h0" data-page-no="1"><div class="pc pc1 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/627554489221806f9d32de80/bg1.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x1 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0">3GPP TSG-RAN WG1 #87ah-NR<span class="_ _0"> </span>R1-1701161</div><div class="t m0 x1 h3 y3 ff1 fs0 fc0 sc0 ls0 ws0">Spokane, WA, USA, 16</div><div class="t m0 x2 h4 y4 ff1 fs1 fc0 sc0 ls0 ws0">th</div><div class="t m0 x3 h3 y3 ff1 fs0 fc0 sc0 ls0 ws0"> &#8211; 20</div><div class="t m0 x4 h4 y4 ff1 fs1 fc0 sc0 ls0 ws0">th</div><div class="t m0 x5 h3 y3 ff1 fs0 fc0 sc0 ls0 ws0"> January, 2017</div><div class="t m0 x1 h3 y5 ff1 fs0 fc0 sc0 ls0 ws0">Source:<span class="_ _1"> </span>Ericsson</div><div class="t m0 x1 h3 y6 ff1 fs0 fc0 sc0 ls0 ws0">Title:<span class="_ _2"> </span>SRS design</div><div class="t m0 x1 h3 y7 ff1 fs0 fc0 sc0 ls0 ws0">Title:<span class="_ _2"> </span>On DL and UL phase noise tracking RS (PTRS)</div><div class="t m0 x1 h3 y8 ff1 fs0 fc0 sc0 ls0 ws0">Agenda Item:<span class="_ _3"> </span>5.1.2.3.3</div><div class="t m0 x1 h3 y9 ff1 fs0 fc0 sc0 ls0 ws0">Document for:<span class="_ _4"> </span>Discussion and Decision</div><div class="t m0 x1 h5 ya ff2 fs2 fc0 sc0 ls0 ws0">1<span class="_ _5"> </span>Introduction</div><div class="t m0 x1 h3 yb ff2 fs0 fc0 sc0 ls0 ws0">In RAN1#87, the following agreement was made re<span class="_ _6"></span>garding a PT-RS:</div><div class="t m0 x1 h5 yc ff2 fs2 fc0 sc0 ls0 ws0">2<span class="_ _5"> </span>Introduction</div><div class="t m0 x1 h3 yd ff2 fs0 fc0 sc0 ls0 ws0">Phase<span class="_ _7"> </span> <span class="_ _7"> </span>noise<span class="_ _7"> </span> <span class="_ _7"> </span>is<span class="_ _7"> </span> <span class="_ _8"> </span>present<span class="_ _7"> </span> <span class="_ _7"> </span>in<span class="_ _7"> </span> <span class="_ _7"> </span>any<span class="_ _7"> </span> <span class="_ _7"> </span>practical<span class="_ _7"> </span> <span class="_ _7"> </span>communication<span class="_ _7"> </span> <span class="_ _7"> </span>system,<span class="_ _7"> </span> <span class="_ _8"> </span>and<span class="_ _7"> </span> <span class="_ _7"> </span>impact<span class="_ _7"> </span> <span class="_ _7"> </span>the<span class="_ _7"> </span> <span class="_ _8"> </span>system<span class="_ _7"> </span> <span class="_ _7"> </span>by<span class="_ _7"> </span> <span class="_ _7"> </span>introducing</div><div class="t m0 x1 h3 ye ff2 fs0 fc0 sc0 ls0 ws0">random<span class="_ _8"> </span> <span class="_ _9"> </span>phase<span class="_ _8"> </span> <span class="_ _9"> </span>variations<span class="_ _8"> </span> <span class="_ _9"> </span>of<span class="_ _8"> </span> <span class="_ _9"> </span>the<span class="_ _8"> </span> <span class="_ _9"> </span>received<span class="_ _8"> </span> <span class="_ _8"> </span>signal.<span class="_ _9"> </span> <span class="_ _8"> </span>Fo<span class="_ _a"></span>r<span class="_ _8"> </span> <span class="_ _9"> </span>an<span class="_ _8"> </span> <span class="_ _9"> </span>OFDM<span class="_ _8"> </span> <span class="_ _9"> </span>system,<span class="_ _8"> </span> <span class="_ _9"> </span>this<span class="_ _8"> </span> <span class="_ _9"> </span>will<span class="_ _8"> </span> <span class="_ _9"> </span>lead<span class="_ _8"> </span> <span class="_ _9"> </span>to<span class="_ _8"> </span> <span class="_ _9"> </span>inter-carrier</div><div class="t m0 x1 h3 yf ff2 fs0 fc0 sc0 ls0 ws0">interference as<span class="_ _a"></span> well<span class="_ _a"></span> as <span class="_ _a"></span>to <span class="_ _a"></span>a <span class="_ _a"></span>common <span class="_ _a"></span>phase error<span class="_ _a"></span> (CPE) <span class="_ _a"></span>on <span class="_ _a"></span>all <span class="_ _a"></span>subcarriers. <span class="_ _a"></span>With increasing<span class="_ _a"></span> carrier <span class="_ _a"></span>frequency,</div><div class="t m0 x1 h3 y10 ff2 fs0 fc0 sc0 ls0 ws0">the<span class="_ _b"></span> <span class="_ _b"></span>variance<span class="_ _b"></span> <span class="_ _b"></span>of<span class="_ _a"></span> <span class="_ _7"></span>the<span class="_ _c"></span> <span class="_ _c"></span>phase<span class="_ _b"></span> <span class="_ _b"></span>noise<span class="_ _b"></span> <span class="_ _c"></span>in<span class="_ _a"></span>creases,<span class="_ _c"></span> <span class="_ _b"></span>leading<span class="_ _b"></span> <span class="_ _b"></span>more<span class="_ _c"></span> <span class="_ _b"></span>pronounced<span class="_ _b"></span> <span class="_ _b"></span>problems.<span class="_ _b"></span> <span class="_ _c"></span>For<span class="_ _b"></span> <span class="_ _b"></span>NR,<span class="_ _b"></span> <span class="_ _b"></span>targeting<span class="_ _c"></span> <span class="_ _b"></span>carrier</div><div class="t m0 x1 h3 y11 ff2 fs0 fc0 sc0 ls0 ws0">frequencies <span class="_ _a"></span>of <span class="_ _a"></span>6 <span class="_ _a"></span>GHz<span class="_ _a"></span> a<span class="_ _a"></span>nd <span class="_ _a"></span>above, <span class="_ _a"></span>measures <span class="_ _a"></span>need <span class="_ _a"></span>to<span class="_ _a"></span> be<span class="_ _a"></span> ta<span class="_ _a"></span>ken <span class="_ _a"></span>to <span class="_ _a"></span>reduce <span class="_ _a"></span>phase <span class="_ _a"></span>noise<span class="_ _a"></span> induced<span class="_ _a"></span> <span class="_ _a"></span>degradation <span class="_ _a"></span>of</div><div class="t m0 x1 h3 y12 ff2 fs0 fc0 sc0 ls0 ws0">system performance. </div><div class="t m0 x6 h6 y13 ff3 fs3 fc0 sc0 ls0 ws0">1/10</div></div><div class="t m0 x7 h3 y14 ff1 fs0 fc0 sc0 ls0 ws0">Agreements:</div><div class="t m0 x8 h3 y15 ff2 fs0 fc0 sc0 ls0 ws0">&#8226;<span class="_ _d"> </span>RS for Phase tracking is denoted as PT-RS</div><div class="t m0 x9 h3 y16 ff2 fs0 fc0 sc0 ls0 ws0">&#8226;<span class="_ _d"> </span>FFS: Naming of RS</div><div class="t m0 x8 h3 y17 ff2 fs0 fc0 sc0 ls0 ws0">&#8226;<span class="_ _d"> </span>PT-RS supports the following for CP-OFDM: </div><div class="t m0 x9 h3 y18 ff2 fs0 fc0 sc0 ls0 ws0">&#8226;<span class="_ _d"> </span>Time-domain density of mapped on every other symbol and/<span class="_ _6"></span>or every symbol and/or </div><div class="t m0 xa h3 y19 ff2 fs0 fc0 sc0 ls0 ws0">every 4-th symbol</div><div class="t m0 xb h3 y1a ff2 fs0 fc0 sc0 ls0 ws0">&#8226;<span class="_ _d"> </span>FFS: Whether/how to down-select the time-domain density</div><div class="t m0 xb h3 y1b ff2 fs0 fc0 sc0 ls0 ws0">&#8226;<span class="_ _d"> </span>Note: Other time-domain densities of PT-RS are not precluded</div><div class="t m0 x9 h3 y1c ff2 fs0 fc0 sc0 ls0 ws0">&#8226;<span class="_ _d"> </span>At least for UL </div><div class="t m0 xb h3 y1d ff2 fs0 fc0 sc0 ls0 ws0">&#8226;<span class="_ _d"> </span>The presence of PT-RS is UE-specifically configured</div><div class="t m0 xc h3 y1e ff2 fs0 fc0 sc0 ls0 ws0">&#8211;<span class="_ _e"> </span>FFS: Whether implicit and/or explicit UE-specific configuration is </div><div class="t m0 xd h3 y1f ff2 fs0 fc0 sc0 ls0 ws0">supported</div><div class="t m0 xb h3 y20 ff2 fs0 fc0 sc0 ls0 ws0">&#8226;<span class="_ _d"> </span>PT-RS is confined in the scheduled time/frequency duration for a UE</div><div class="t m0 x9 h3 y21 ff2 fs0 fc0 sc0 ls0 ws0">&#8226;<span class="_ _d"> </span>FFS: UE-specific and/or non-UE-specific and/or cell-specific for DL</div><div class="t m0 x8 h3 y22 ff2 fs0 fc0 sc0 ls0 ws0">&#8226;<span class="_ _d"> </span>The following are to be studied for PT-RS:</div><div class="t m0 x9 h3 y23 ff2 fs0 fc0 sc0 ls0 ws0">&#8226;<span class="_ _d"> </span>Number of PT-RS ports to be supported</div><div class="t m0 x9 h3 y24 ff2 fs0 fc0 sc0 ls0 ws0">&#8226;<span class="_ _d"> </span>Use of precoding </div><div class="t m0 x9 h3 y25 ff2 fs0 fc0 sc0 ls0 ws0">&#8226;<span class="_ _d"> </span>QCL relationship with other RS, e.g., DM-RS </div><div class="t m0 x9 h3 y26 ff2 fs0 fc0 sc0 ls0 ws0">&#8226;<span class="_ _d"> </span>Details on frequency domain pattern(s) and/or v<span class="_ _6"></span>ariable frequency domain densities</div><div class="t m0 x9 h3 y27 ff2 fs0 fc0 sc0 ls0 ws0">&#8226;<span class="_ _d"> </span>Whether PT-RS is necessary for DFT-s-OFDM waveform</div><div class="t m0 x9 h3 y28 ff2 fs0 fc0 sc0 ls0 ws0">&#8226;<span class="_ _d"> </span>Sharing of time/frequency resource between PT-RS among UEs and/<span class="_ _6"></span>or among layers </div><div class="t m0 xa h3 y29 ff2 fs0 fc0 sc0 ls0 ws0">of a single UE</div><div class="t m0 x9 h3 y2a ff2 fs0 fc0 sc0 ls0 ws0">&#8226;<span class="_ _d"> </span>Additional usage for estimating residual frequency offs<span class="_ _6"></span>et and/or high-speed channel</div><div class="t m0 x9 h3 y2b ff2 fs0 fc0 sc0 ls0 ws0">&#8226;<span class="_ _d"> </span>Possible method(s) to improve phase estimation performa<span class="_ _6"></span>nce from PT-RS</div><div class="t m0 xb h3 y2c ff2 fs0 fc0 sc0 ls0 ws0">&#8226;<span class="_ _d"> </span>E.g., using ZP/NZP PT-RS to reduce interference </div><div class="t m0 x9 h3 y2d ff2 fs0 fc0 sc0 ls0 ws0">&#8226;<span class="_ _d"> </span>Details of UE-specific configuration, e.g., associated with the sch<span class="_ _6"></span>eduled MCS and/or </div><div class="t m0 xa h3 y2e ff2 fs0 fc0 sc0 ls0 ws0">BW, the number of scheduled layers, or use dedicated sig<span class="_ _6"></span>naling</div><div class="t m0 x9 h3 y2f ff2 fs0 fc0 sc0 ls0 ws0">&#8226;<span class="_ _d"> </span>Others are not precluded</div><div class="t m0 x8 h3 y30 ff2 fs0 fc0 sc0 ls0 ws0">&#8226;<span class="_ _d"> </span>FFS whether new RS is introduced or extended DMRS is used for phase tr<span class="_ _6"></span>acking</div></div><div class="pi" data-data='{"ctm":[1.611850,0.000000,0.000000,1.611850,0.000000,0.000000]}'></div></div> </body> </html>
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