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f231e37d214313a3034041220c5b12605e3d.rar
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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/624f4e1c74bc5c01052fdc9e/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/624f4e1c74bc5c01052fdc9e/bg1.jpg"><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">An<span class="_ _0"> </span>L<span class="_ _1"></span>TE<span class="_ _0"> </span>module<span class="_ _0"> </span>f<span class="_ _2"></span>or<span class="_ _0"> </span>the<span class="_ _0"> </span>ns-3<span class="_ _0"> </span>netw<span class="_ _2"></span>ork<span class="_ _0"> </span>sim<span class="_ _2"></span>ulator</div><div class="t m0 x2 h3 y2 ff2 fs1 fc0 sc0 ls0 ws0">Giuseppe<span class="_ _3"> </span>Piro</div><div class="t m0 x3 h4 y3 ff2 fs2 fc0 sc0 ls0 ws0">DEE<span class="_ _4"> </span>-<span class="_ _4"> </span>P<span class="_ _2"></span>olitecnico<span class="_ _4"> </span>di<span class="_ _4"> </span>Bari,<span class="_ _4"> </span>Bari,<span class="_ _4"> </span>Italy</div><div class="t m0 x4 h3 y4 ff2 fs1 fc0 sc0 ls0 ws0">g.piro@poliba.it</div><div class="t m0 x5 h3 y2 ff2 fs1 fc0 sc0 ls0 ws0">Nicola<span class="_ _3"> </span>Baldo<span class="_ _2"></span>,<span class="_ _3"> </span>Marco<span class="_ _3"> </span>Miozz<span class="_ _2"></span>o</div><div class="t m0 x6 h4 y3 ff2 fs2 fc0 sc0 ls0 ws0">Centre<span class="_ _4"> </span>T<span class="_ _5"></span>ecnol&#242;gic<span class="_ _4"> </span>de<span class="_ _4"> </span>T<span class="_ _5"></span>elecomunicacions<span class="_ _4"> </span>de</div><div class="t m0 x7 h4 y5 ff2 fs2 fc0 sc0 ls0 ws0">Cataluny<span class="_ _2"></span>a,<span class="_ _4"> </span>Barcelona,<span class="_ _4"> </span>Spain</div><div class="t m0 x8 h3 y6 ff2 fs1 fc0 sc0 ls0 ws0">{nbaldo<span class="_ _2"></span>,mmiozz<span class="_ _2"></span>o}@cttc.es</div><div class="t m0 x9 h5 y7 ff3 fs1 fc0 sc0 ls0 ws0">ABSTRA<span class="_ _6"></span>CT</div><div class="t m0 x9 h6 y8 ff4 fs3 fc0 sc0 ls0 ws0">In<span class="_ _3"> </span>this<span class="_ _3"> </span>paper,<span class="_ _3"> </span>we<span class="_ _3"> </span>presen<span class="_ _6"></span>t<span class="_ _3"> </span>a<span class="_ _3"> </span>nov<span class="_ _6"></span>el<span class="_ _3"> </span>mo<span class="_ _7"></span>dule<span class="_ _3"> </span>dev<span class="_ _2"></span>eloped<span class="_ _3"> </span>for<span class="_ _3"> </span>the</div><div class="t m0 x9 h6 y9 ff4 fs3 fc0 sc0 ls0 ws0">sim<span class="_ _2"></span>ulation<span class="_ _8"> </span>of<span class="_ _8"> </span>the<span class="_ _8"> </span>L<span class="_ _6"></span>TE<span class="_ _3"> </span>technology<span class="_ _3"> </span>with<span class="_ _8"> </span>the<span class="_ _8"> </span>ns-3<span class="_ _8"> </span>simulator.</div><div class="t m0 x9 h6 ya ff4 fs3 fc0 sc0 ls0 ws0">It<span class="_ _4"> </span>fo<span class="_ _7"></span>cuses<span class="_ _4"> </span>mainly<span class="_ _4"> </span>on<span class="_ _4"> </span>mo<span class="_ _7"></span>deling<span class="_ _4"> </span>the<span class="_ _9"> </span>E-UTRA<span class="_ _4"> </span>part<span class="_ _4"> </span>of<span class="_ _9"> </span>the<span class="_ _4"> </span>sys-</div><div class="t m0 x9 h6 yb ff4 fs3 fc0 sc0 ls0 ws0">tem,<span class="_ _a"> </span>with<span class="_ _a"> </span>a<span class="_ _b"> </span>particular<span class="_ _b"> </span>attention<span class="_ _b"> </span>on<span class="_ _b"> </span>the<span class="_ _b"> </span>asp<span class="_ _7"></span>ects<span class="_ _b"> </span>related<span class="_ _a"> </span>to<span class="_ _b"> </span>the</div><div class="t m0 x9 h6 yc ff4 fs3 fc0 sc0 ls0 ws0">c<span class="_ _2"></span>hannel,<span class="_ _4"> </span>PHY<span class="_ _9"> </span>and<span class="_ _4"> </span>MAC<span class="_ _4"> </span>lay<span class="_ _6"></span>ers.<span class="_ _c"> </span>First<span class="_ _4"> </span>we<span class="_ _4"> </span>discuss<span class="_ _4"> </span>the<span class="_ _4"> </span>ov<span class="_ _2"></span>erall</div><div class="t m0 x9 h6 yd ff4 fs3 fc0 sc0 ls0 ws0">modeling<span class="_ _c"> </span>assumptio<span class="_ _2"></span>ns<span class="_ _8"> </span>according<span class="_ _c"> </span>to<span class="_ _3"> </span>which<span class="_ _8"> </span>the<span class="_ _d"> </span>module<span class="_ _d"> </span>was</div><div class="t m0 x9 h6 ye ff4 fs3 fc0 sc0 ls0 ws0">designed.<span class="_ _e"> </span>Subsequen<span class="_ _2"></span>tly<span class="_ _6"></span>,<span class="_ _3"> </span>we<span class="_ _3"> </span>describ<span class="_ _7"></span>e<span class="_ _8"> </span>in<span class="_ _3"> </span>detail<span class="_ _8"> </span>the<span class="_ _8"> </span>arc<span class="_ _2"></span>hitec-</div><div class="t m0 x9 h6 yf ff4 fs3 fc0 sc0 ls0 ws0">ture<span class="_ _d"> </span>of<span class="_ _8"> </span>the<span class="_ _d"> </span>mo<span class="_ _7"></span>dule<span class="_ _d"> </span>and<span class="_ _d"> </span>its<span class="_ _8"> </span>comp<span class="_ _7"></span>onents.<span class="_ _f"> </span>Finally<span class="_ _6"></span>,<span class="_ _d"> </span>we<span class="_ _8"> </span>show</div><div class="t m0 x9 h6 y10 ff4 fs3 fc0 sc0 ls0 ws0">possible<span class="_ _c"> </span>researc<span class="_ _2"></span>h<span class="_ _d"> </span>applications<span class="_ _d"> </span>by<span class="_ _d"> </span>discussing<span class="_ _d"> </span>some<span class="_ _d"> </span>example</div><div class="t m0 x9 h6 y11 ff4 fs3 fc0 sc0 ls0 ws0">sim<span class="_ _2"></span>ulation<span class="_ _9"> </span>scenarios.</div><div class="t m0 x9 h5 y12 ff3 fs1 fc0 sc0 ls0 ws0">Categories<span class="_ _4"> </span>and<span class="_ _9"> </span>Subject<span class="_ _9"> </span>Descriptors</div><div class="t m0 x9 h6 y13 ff4 fs3 fc0 sc0 ls0 ws0">I.6.5<span class="_ _4"> </span>[<span class="ff5">Simulation<span class="_ _3"> </span>and<span class="_ _3"> </span>Mo<span class="_ _7"></span>deling</span>]:<span class="_ _c"> </span>Mo<span class="_ _7"></span>del<span class="_ _4"> </span>Developmen<span class="_ _2"></span>t&#8212;</div><div class="t m0 x9 h6 y14 ff6 fs3 fc0 sc0 ls0 ws0">Mo<span class="_ _6"></span>deling<span class="_ _0"> </span>metho<span class="_ _6"></span>dolo<span class="_ _2"></span>gies<span class="_ _10"></span><span class="ff4">;<span class="_ _e"> </span>I.6.7<span class="_ _11"> </span>[<span class="ff5">Sim<span class="_ _2"></span>ulation<span class="_ _e"> </span>and<span class="_ _e"> </span>Model-</span></span></div><div class="t m0 x9 h6 y15 ff5 fs3 fc0 sc0 ls0 ws0">ing<span class="ff4">]:<span class="_ _c"> </span>Sim<span class="_ _2"></span>ulation<span class="_ _9"> </span>Support<span class="_ _3"> </span>Systems&#8212;<span class="ff6">Envir<span class="_ _6"></span>onments</span></span></div><div class="t m0 x9 h5 y16 ff3 fs1 fc0 sc0 ls0 ws0">General<span class="_ _4"> </span>T<span class="_ _6"></span>erms</div><div class="t m0 x9 h6 y17 ff4 fs3 fc0 sc0 ls0 ws0">Algorithm,<span class="_ _4"> </span>Design,<span class="_ _3"> </span>P<span class="_ _2"></span>erformance,<span class="_ _9"> </span>V<span class="_ _6"></span>eri&#64257;cation</div><div class="t m0 x9 h5 y18 ff3 fs1 fc0 sc0 ls0 ws0">K<span class="_ _2"></span>eywords</div><div class="t m0 x9 h6 y19 ff4 fs3 fc0 sc0 ls0 ws0">3GPP<span class="_ _6"></span>,<span class="_ _b"> </span>L<span class="_ _5"></span>TE,<span class="_ _b"> </span>E-UTRA,<span class="_ _b"> </span>Simulator,<span class="_ _b"> </span>ns-3,<span class="_ _b"> </span>Channel,<span class="_ _b"> </span>MAC,<span class="_ _b"> </span>PHY</div><div class="t m0 x9 h5 y1a ff3 fs1 fc0 sc0 ls0 ws0">1.<span class="_ _12"> </span>INTR<span class="_ _2"></span>ODUCTION</div><div class="t m0 x9 h6 y1b ff4 fs3 fc0 sc0 ls0 ws0">In<span class="_ _c"> </span>the<span class="_ _11"> </span>last<span class="_ _11"> </span>years<span class="_ _c"> </span>the<span class="_ _c"> </span>3rd<span class="_ _11"> </span>Generation<span class="_ _11"> </span>Partnersh<span class="_ _2"></span>ip<span class="_ _11"> </span>Pro<span class="_ _7"></span>ject</div><div class="t m0 x9 h6 y1c ff4 fs3 fc0 sc0 ls0 ws0">(3GPP)<span class="_ _d"> </span>has<span class="_ _d"> </span>b<span class="_ _7"></span>een<span class="_ _d"> </span>working<span class="_ _8"> </span>on<span class="_ _c"> </span>the<span class="_ _d"> </span>de&#64257;nition<span class="_ _d"> </span>of<span class="_ _c"> </span>a<span class="_ _d"> </span>new<span class="_ _d"> </span>mo-</div><div class="t m0 x9 h6 y1d ff4 fs3 fc0 sc0 ls0 ws0">bile<span class="_ _4"> </span>communication<span class="_ _4"> </span>tec<span class="_ _2"></span>hnology<span class="_ _4"> </span>called<span class="_ _4"> </span>Long<span class="_ _9"> </span>T<span class="_ _6"></span>erm<span class="_ _4"> </span>Evolution</div><div class="t m0 x9 h6 y1e ff4 fs3 fc0 sc0 ls0 ws0">(L<span class="_ _6"></span>TE),<span class="_ _9"> </span>whic<span class="_ _2"></span>h<span class="_ _9"> </span>candidates<span class="_ _3"> </span>as<span class="_ _9"> </span>a<span class="_ _9"> </span>signi&#64257;cant<span class="_ _9"> </span>improv<span class="_ _6"></span>ement<span class="_ _9"> </span>with</div><div class="t m0 x9 h6 y1f ff4 fs3 fc0 sc0 ls0 ws0">respect<span class="_ _c"> </span>to<span class="_ _d"> </span>the<span class="_ _c"> </span>curren<span class="_ _2"></span>tly<span class="_ _d"> </span>widely-deploy<span class="_ _2"></span>ed<span class="_ _d"> </span>Universal<span class="_ _8"> </span>Mobile</div><div class="t m0 x9 h6 y20 ff4 fs3 fc0 sc0 ls0 ws0">T<span class="_ _6"></span>elecomm<span class="_ _2"></span>unications<span class="_ _b"> </span>System<span class="_ _13"> </span>(UMTS)<span class="_ _13"> </span>and<span class="_ _b"> </span>High-Sp<span class="_ _7"></span>eed<span class="_ _13"> </span>Pac<span class="_ _2"></span>k<span class="_ _2"></span>et</div><div class="t m0 x9 h6 y21 ff4 fs3 fc0 sc0 ls0 ws0">Access<span class="_ _9"> </span>(HSP<span class="_ _6"></span>A)<span class="_ _4"> </span>systems.</div><div class="t m0 x9 h6 y22 ff4 fs3 fc0 sc0 ls0 ws0">Thanks<span class="_ _b"> </span>to<span class="_ _a"> </span>features<span class="_ _a"> </span>like<span class="_ _b"> </span>enhanced<span class="_ _a"> </span>data<span class="_ _a"> </span>rates<span class="_ _a"> </span>and<span class="_ _b"> </span>low<span class="_ _2"></span>er<span class="_ _a"> </span>pow<span class="_ _2"></span>er</div><div class="t m0 x9 h6 y23 ff4 fs3 fc0 sc0 ls0 ws0">consumption,<span class="_ _11"> </span>L<span class="_ _6"></span>TE<span class="_ _c"> </span>represents<span class="_ _c"> </span>an<span class="_ _11"> </span>emerging<span class="_ _c"> </span>and<span class="_ _11"> </span>promising</div><div class="t m0 x9 h6 y24 ff4 fs3 fc0 sc0 ls0 ws0">tec<span class="_ _2"></span>hnology<span class="_ _c"> </span>for<span class="_ _c"> </span>pro<span class="_ _2"></span>viding<span class="_ _c"> </span>a<span class="_ _d"> </span>broadband<span class="_ _c"> </span>ubiquitous<span class="_ _c"> </span>Internet</div><div class="t m0 x9 h6 y25 ff4 fs3 fc0 sc0 ls0 ws0">access.<span class="_ _e"> </span>F<span class="_ _6"></span>or<span class="_ _9"> </span>this<span class="_ _8"> </span>reason,<span class="_ _8"> </span>the<span class="_ _3"> </span>research<span class="_ _3"> </span>communi<span class="_ _2"></span>ty<span class="_ _3"> </span>is<span class="_ _3"> </span>putting</div><div class="t m0 x9 h6 y26 ff4 fs3 fc0 sc0 ls0 ws0">a<span class="_ _8"> </span>considerable<span class="_ _8"> </span>e&#64256;ort<span class="_ _d"> </span>on<span class="_ _8"> </span>studying<span class="_ _d"> </span>L<span class="_ _6"></span>TE<span class="_ _8"> </span>for<span class="_ _8"> </span>designing<span class="_ _8"> </span>newer</div><div class="t m0 x9 h6 y27 ff4 fs3 fc0 sc0 ls0 ws0">and<span class="_ _a"> </span>innov<span class="_ _6"></span>ativ<span class="_ _2"></span>e<span class="_ _a"> </span>solutions<span class="_ _a"> </span>that<span class="_ _a"> </span>can<span class="_ _a"> </span>maximize<span class="_ _a"> </span>its<span class="_ _4"> </span>performance,</div><div class="t m0 xa h6 y7 ff4 fs3 fc0 sc0 ls0 ws0">both<span class="_ _3"> </span>from<span class="_ _3"> </span>a<span class="_ _9"> </span>Radio<span class="_ _3"> </span>Access<span class="_ _9"> </span>Netw<span class="_ _2"></span>ork<span class="_ _9"> </span>(RAN)<span class="_ _3"> </span>persp<span class="_ _7"></span>ective<span class="_ _9"> </span>and</div><div class="t m0 xa h6 y28 ff4 fs3 fc0 sc0 ls0 ws0">from<span class="_ _3"> </span>the<span class="_ _8"> </span>point<span class="_ _3"> </span>of<span class="_ _8"> </span>view<span class="_ _3"> </span>of<span class="_ _8"> </span>the<span class="_ _3"> </span>Core<span class="_ _8"> </span>Net<span class="_ _2"></span>work.<span class="_ _0"> </span>F<span class="_ _6"></span>or<span class="_ _3"> </span>instance,</div><div class="t m0 xa h6 y29 ff4 fs3 fc0 sc0 ls0 ws0">in<span class="_ _8"> </span>order<span class="_ _8"> </span>to<span class="_ _8"> </span>impro<span class="_ _2"></span>ve<span class="_ _3"> </span>the<span class="_ _8"> </span>sp<span class="_ _7"></span>ectral<span class="_ _3"> </span>e&#64259;ciency<span class="_ _6"></span>,<span class="_ _8"> </span>the<span class="_ _8"> </span>Orthogonal</div><div class="t m0 xa h6 y2a ff4 fs3 fc0 sc0 ls0 ws0">F<span class="_ _6"></span>requency<span class="_ _4"> </span>Division<span class="_ _4"> </span>Multiple<span class="_ _4"> </span>Access<span class="_ _9"> </span>(OFDMA)<span class="_ _4"> </span>technique<span class="_ _4"> </span>is</div><div class="t m0 xa h6 y2b ff4 fs3 fc0 sc0 ls0 ws0">in<span class="_ _2"></span>tro<span class="_ _7"></span>duced,<span class="_ _d"> </span>together<span class="_ _c"> </span>with<span class="_ _d"> </span>Multiple-Input<span class="_ _d"> </span>Multiple-Output</div><div class="t m0 xa h6 y2c ff4 fs3 fc0 sc0 ls0 ws0">(MIMO)<span class="_ _d"> </span>schemes.<span class="_ _14"> </span>A<span class="_ _2"></span>t<span class="_ _c"> </span>the<span class="_ _d"> </span>same<span class="_ _c"> </span>time,<span class="_ _c"> </span>L<span class="_ _6"></span>TE<span class="_ _d"> </span>completes<span class="_ _c"> </span>the</div><div class="t m0 xa h6 y2d ff4 fs3 fc0 sc0 ls0 ws0">transition<span class="_ _b"> </span>from<span class="_ _b"> </span>Circuit<span class="_ _b"> </span>Switched<span class="_ _13"> </span>core<span class="_ _b"> </span>netw<span class="_ _2"></span>ork<span class="_ _b"> </span>solutions<span class="_ _b"> </span>(still</div><div class="t m0 xa h6 y2e ff4 fs3 fc0 sc0 ls0 ws0">hea<span class="_ _2"></span>vily<span class="_ _3"> </span>relied<span class="_ _8"> </span>up<span class="_ _7"></span>on<span class="_ _3"> </span>in<span class="_ _3"> </span>3G)<span class="_ _8"> </span>to<span class="_ _3"> </span>an<span class="_ _8"> </span>all-IP<span class="_ _3"> </span>architecture,<span class="_ _3"> </span>which</div><div class="t m0 xa h6 y2f ff4 fs3 fc0 sc0 ls0 ws0">had<span class="_ _3"> </span>b<span class="_ _7"></span>een<span class="_ _3"> </span>long<span class="_ _3"> </span>regarded<span class="_ _3"> </span>as<span class="_ _8"> </span>a<span class="_ _3"> </span>muc<span class="_ _2"></span>h<span class="_ _3"> </span>desireable<span class="_ _3"> </span>feature,<span class="_ _8"> </span>both</div><div class="t m0 xa h6 y30 ff4 fs3 fc0 sc0 ls0 ws0">for<span class="_ _a"> </span>the<span class="_ _b"> </span>increasing<span class="_ _a"> </span>usage<span class="_ _a"> </span>of<span class="_ _a"> </span>data<span class="_ _b"> </span>services<span class="_ _a"> </span>by<span class="_ _b"> </span>mobile<span class="_ _a"> </span>users,<span class="_ _a"> </span>and</div><div class="t m0 xa h6 y31 ff4 fs3 fc0 sc0 ls0 ws0">for<span class="_ _a"> </span>the<span class="_ _4"> </span>higher<span class="_ _a"> </span>&#64258;exibility<span class="_ _a"> </span>and<span class="_ _4"> </span>potential<span class="_ _a"> </span>low<span class="_ _6"></span>er<span class="_ _4"> </span>cost<span class="_ _a"> </span>of<span class="_ _4"> </span>the<span class="_ _4"> </span>Core</div><div class="t m0 xa h6 y32 ff4 fs3 fc0 sc0 ls0 ws0">Net<span class="_ _2"></span>work<span class="_ _4"> </span>equipment.</div><div class="t m0 xa h6 y33 ff4 fs3 fc0 sc0 ls0 ws0">As<span class="_ _9"> </span>the<span class="_ _9"> </span>interest<span class="_ _4"> </span>in<span class="_ _9"> </span>L<span class="_ _6"></span>TE<span class="_ _9"> </span>as<span class="_ _9"> </span>a<span class="_ _3"> </span>mobile<span class="_ _4"> </span>communication<span class="_ _4"> </span>technol-</div><div class="t m0 xa h6 y34 ff4 fs3 fc0 sc0 ls0 ws0">ogy<span class="_ _3"> </span>increases,<span class="_ _8"> </span>there<span class="_ _3"> </span>is<span class="_ _3"> </span>a<span class="_ _8"> </span>gro<span class="_ _2"></span>wing<span class="_ _3"> </span>need<span class="_ _3"> </span>for<span class="_ _8"> </span>instrument<span class="_ _2"></span>s<span class="_ _3"> </span>able</div><div class="t m0 xa h6 y35 ff4 fs3 fc0 sc0 ls0 ws0">to<span class="_ _c"> </span>characterize<span class="_ _c"> </span>the<span class="_ _11"> </span>performance<span class="_ _11"> </span>of<span class="_ _11"> </span>L<span class="_ _6"></span>TE<span class="_ _c"> </span>systems<span class="_ _11"> </span>in<span class="_ _c"> </span>order</div><div class="t m0 xa h6 y36 ff4 fs3 fc0 sc0 ls0 ws0">to<span class="_ _d"> </span>tune<span class="_ _d"> </span>and<span class="_ _d"> </span>optimize<span class="_ _d"> </span>them.<span class="_ _14"> </span>This<span class="_ _d"> </span>need<span class="_ _d"> </span>is<span class="_ _d"> </span>present<span class="_ _d"> </span>at<span class="_ _d"> </span>v<span class="_ _2"></span>ari-</div><div class="t m0 xa h6 y37 ff4 fs3 fc0 sc0 ls0 ws0">ous<span class="_ _3"> </span>stages:<span class="_ _0"> </span>for<span class="_ _3"> </span>the<span class="_ _8"> </span>standardization<span class="_ _3"> </span>of<span class="_ _3"> </span>future<span class="_ _8"> </span>versi<span class="_ _2"></span>on<span class="_ _3"> </span>of<span class="_ _8"> </span>the</div><div class="t m0 xa h6 y38 ff4 fs3 fc0 sc0 ls0 ws0">tec<span class="_ _2"></span>hnology<span class="_ _6"></span>,<span class="_ _9"> </span>as<span class="_ _9"> </span>well<span class="_ _9"> </span>as<span class="_ _9"> </span>for<span class="_ _3"> </span>the<span class="_ _9"> </span>design<span class="_ _3"> </span>and<span class="_ _9"> </span>implementation<span class="_ _4"> </span>of</div><div class="t m0 xa h6 y39 ff4 fs3 fc0 sc0 ls0 ws0">devices<span class="_ _b"> </span>and<span class="_ _b"> </span>netw<span class="_ _2"></span>ork<span class="_ _b"> </span>equipments<span class="_ _13"> </span>and<span class="_ _b"> </span>the<span class="_ _a"> </span>roll-out<span class="_ _b"> </span>of<span class="_ _b"> </span>L<span class="_ _6"></span>TE<span class="_ _b"> </span>net-</div><div class="t m0 xa h6 y3a ff4 fs3 fc0 sc0 ls0 ws0">w<span class="_ _2"></span>ork<span class="_ _8"> </span>infrastructures.<span class="_ _e"> </span>L<span class="_ _6"></span>TE<span class="_ _8"> </span>is<span class="_ _8"> </span>a<span class="_ _8"> </span>rather<span class="_ _3"> </span>complex<span class="_ _8"> </span>technology<span class="_ _6"></span>,</div><div class="t m0 xa h6 y3b ff4 fs3 fc0 sc0 ls0 ws0">and<span class="_ _b"> </span>for<span class="_ _a"> </span>this<span class="_ _b"> </span>reason<span class="_ _a"> </span>traditional<span class="_ _b"> </span>p<span class="_ _7"></span>erformance<span class="_ _b"> </span>ev<span class="_ _2"></span>aluation<span class="_ _b"> </span>meth-</div><div class="t m0 xa h6 y3c ff4 fs3 fc0 sc0 ls0 ws0">ods<span class="_ _3"> </span>based<span class="_ _9"> </span>on<span class="_ _9"> </span>analytical<span class="_ _3"> </span>models<span class="_ _3"> </span>can<span class="_ _9"> </span>b<span class="_ _7"></span>e<span class="_ _9"> </span>applied<span class="_ _9"> </span>only<span class="_ _3"> </span>to<span class="_ _9"> </span>very</div><div class="t m0 xa h6 y3d ff4 fs3 fc0 sc0 ls0 ws0">small<span class="_ _13"> </span>p<span class="_ _7"></span>ortions<span class="_ _b"> </span>of<span class="_ _b"> </span>it.<span class="_ _8"> </span>As<span class="_ _b"> </span>a<span class="_ _b"> </span>consequences,<span class="_ _b"> </span>researchers<span class="_ _13"> </span>and<span class="_ _b"> </span>engi-</div><div class="t m0 xa h6 y3e ff4 fs3 fc0 sc0 ls0 ws0">neers<span class="_ _13"> </span>most<span class="_ _b"> </span>often<span class="_ _b"> </span>rely<span class="_ _b"> </span>on<span class="_ _b"> </span>simulators<span class="_ _13"> </span>to<span class="_ _b"> </span>assess<span class="_ _b"> </span>the<span class="_ _b"> </span>p<span class="_ _7"></span>erformance</div><div class="t m0 xa h6 y3f ff4 fs3 fc0 sc0 ls0 ws0">of<span class="_ _4"> </span>L<span class="_ _6"></span>TE<span class="_ _4"> </span>systems.<span class="_ _c"> </span>In<span class="_ _4"> </span>particular,<span class="_ _4"> </span>op<span class="_ _7"></span>en<span class="_ _4"> </span>source<span class="_ _9"> </span>netw<span class="_ _2"></span>ork<span class="_ _4"> </span>simula-</div><div class="t m0 xa h6 y40 ff4 fs3 fc0 sc0 ls0 ws0">tion<span class="_ _9"> </span>to<span class="_"> </span>ols<span class="_ _3"> </span>are<span class="_ _9"> </span>highly<span class="_ _9"> </span>v<span class="_ _6"></span>alued<span class="_ _9"> </span>by<span class="_ _4"> </span>researchers,<span class="_ _4"> </span>b<span class="_ _7"></span>ecause<span class="_ _9"> </span>of<span class="_ _9"> </span>their</div><div class="t m0 xa h6 y41 ff4 fs3 fc0 sc0 ls0 ws0">usually<span class="_ _a"> </span>wider<span class="_ _4"> </span>acceptance<span class="_ _a"> </span>within<span class="_ _a"> </span>the<span class="_ _4"> </span>researc<span class="_ _2"></span>h<span class="_ _a"> </span>communit<span class="_ _2"></span>y<span class="_ _6"></span>.<span class="_ _8"> </span>In</div><div class="t m0 xa h6 y42 ff4 fs3 fc0 sc0 ls0 ws0">the<span class="_ _8"> </span>literature,<span class="_ _d"> </span>several<span class="_ _8"> </span>L<span class="_ _6"></span>TE<span class="_ _d"> </span>sim<span class="_ _2"></span>ulators<span class="_ _8"> </span>hav<span class="_ _2"></span>e<span class="_ _8"> </span>b<span class="_ _7"></span>een<span class="_ _d"> </span>proposed</div><div class="t m0 xa h6 y43 ff4 fs3 fc0 sc0 ls0 ws0">for<span class="_ _3"> </span>di&#64256;erent<span class="_ _9"> </span>purp<span class="_ _7"></span>oses.<span class="_ _e"> </span>Ph<span class="_ _6"></span>ysical<span class="_ _8"> </span>la<span class="_ _2"></span>yer<span class="_ _9"> </span>simulation<span class="_ _3"> </span>tools<span class="_ _8"> </span>such</div><div class="t m0 xa h6 y44 ff4 fs3 fc0 sc0 ls0 ws0">as<span class="_ _3"> </span>[10]<span class="_ _8"> </span>and<span class="_ _8"> </span>[18]<span class="_ _3"> </span>are<span class="_ _8"> </span>quite<span class="_ _8"> </span>limited<span class="_ _3"> </span>in<span class="_ _8"> </span>that<span class="_ _8"> </span>they<span class="_ _3"> </span>consider<span class="_ _8"> </span>the</div><div class="t m0 xa h6 y45 ff4 fs3 fc0 sc0 ls0 ws0">performance<span class="_ _c"> </span>at<span class="_ _c"> </span>the<span class="_ _c"> </span>physical<span class="_ _d"> </span>lay<span class="_ _2"></span>er<span class="_ _d"> </span>only<span class="_ _6"></span>,<span class="_ _11"> </span>normally<span class="_ _c"> </span>focusing</div><div class="t m0 xa h6 y46 ff4 fs3 fc0 sc0 ls0 ws0">on<span class="_ _8"> </span>a<span class="_ _8"> </span>single<span class="_ _d"> </span>transmitter-receiv<span class="_ _2"></span>er<span class="_ _8"> </span>pair.<span class="_ _f"> </span>System<span class="_ _3"> </span>level<span class="_ _8"> </span>simul<span class="_ _2"></span>a-</div><div class="t m0 xa h6 y47 ff4 fs3 fc0 sc0 ls0 ws0">tors,<span class="_ _4"> </span>such<span class="_ _4"> </span>as<span class="_ _9"> </span>for<span class="_ _9"> </span>instance<span class="_ _9"> </span>[14]<span class="_ _9"> </span>and<span class="_ _9"> </span>[13],<span class="_ _4"> </span>go<span class="_ _9"> </span>b<span class="_ _7"></span>eyond<span class="_ _4"> </span>the<span class="_ _4"> </span>phys-</div><div class="t m0 xa h6 y48 ff4 fs3 fc0 sc0 ls0 ws0">ical<span class="_ _3"> </span>lay<span class="_ _2"></span>er<span class="_ _3"> </span>by<span class="_ _3"> </span>normally<span class="_ _3"> </span>introducing<span class="_ _3"> </span>the<span class="_ _8"> </span>MA<span class="_ _2"></span>C<span class="_ _3"> </span>lay<span class="_ _2"></span>er<span class="_ _3"> </span>together</div><div class="t m0 xa h6 y49 ff4 fs3 fc0 sc0 ls0 ws0">with<span class="_ _9"> </span>an<span class="_ _3"> </span>abstract<span class="_ _3"> </span>model<span class="_ _3"> </span>of<span class="_ _3"> </span>the<span class="_ _9"> </span>higher<span class="_ _3"> </span>lay<span class="_ _2"></span>ers.<span class="_ _11"> </span>They<span class="_ _9"> </span>are<span class="_ _3"> </span>usu-</div><div class="t m0 xa h6 y4a ff4 fs3 fc0 sc0 ls0 ws0">ally<span class="_ _a"> </span>adopted<span class="_ _a"> </span>in<span class="_ _a"> </span>the<span class="_ _a"> </span>research<span class="_ _a"> </span>comm<span class="_ _2"></span>unity<span class="_ _b"> </span>for<span class="_ _a"> </span>the<span class="_ _4"> </span>ev<span class="_ _6"></span>aluation<span class="_ _a"> </span>of</div><div class="t m0 xa h6 y4b ff4 fs3 fc0 sc0 ls0 ws0">Radio<span class="_ _a"> </span>Resource<span class="_ _a"> </span>Management<span class="_ _b"> </span>(RRM)<span class="_ _a"> </span>algorithms,<span class="_ _4"> </span>but<span class="_ _b"> </span>due<span class="_ _4"> </span>to</div><div class="t m0 xa h6 y4c ff4 fs3 fc0 sc0 ls0 ws0">their<span class="_ _a"> </span>abstraction<span class="_ _a"> </span>of<span class="_ _4"> </span>the<span class="_ _a"> </span>higher<span class="_ _a"> </span>lay<span class="_ _2"></span>ers<span class="_ _a"> </span>they<span class="_ _4"> </span>cannot<span class="_ _a"> </span>provide<span class="_ _b"> </span>an</div><div class="t m0 xa h6 y4d ff4 fs3 fc0 sc0 ls0 ws0">accurate<span class="_ _13"> </span>ev<span class="_ _2"></span>aluation<span class="_ _13"> </span>of<span class="_ _b"> </span>the<span class="_ _b"> </span>end-to-end<span class="_ _13"> </span>p<span class="_ _7"></span>erformance<span class="_ _13"> </span>and<span class="_ _b"> </span>of<span class="_ _b"> </span>the</div><div class="t m0 xa h6 y4e ff4 fs3 fc0 sc0 ls0 ws0">behavior<span class="_ _a"> </span>of<span class="_ _4"> </span>the<span class="_ _4"> </span>net<span class="_ _2"></span>work<span class="_ _a"> </span>as<span class="_ _4"> </span>a<span class="_ _a"> </span>whole.<span class="_ _d"> </span>The<span class="_ _4"> </span>most<span class="_ _4"> </span>promising<span class="_ _a"> </span>so-</div><div class="t m0 xa h6 y4f ff4 fs3 fc0 sc0 ls0 ws0">lution<span class="_ _4"> </span>to<span class="_ _4"> </span>this<span class="_ _4"> </span>problem<span class="_ _4"> </span>is<span class="_ _4"> </span>represen<span class="_ _2"></span>ted<span class="_ _4"> </span>b<span class="_ _2"></span>y<span class="_ _4"> </span>netw<span class="_ _6"></span>ork<span class="_ _4"> </span>simulators,</div><div class="t m0 xa h6 y50 ff4 fs3 fc0 sc0 ls0 ws0">whic<span class="_ _2"></span>h<span class="_ _a"> </span>feature<span class="_ _a"> </span>an<span class="_ _b"> </span>accurate<span class="_ _a"> </span>implementation<span class="_ _b"> </span>of<span class="_ _a"> </span>all<span class="_ _a"> </span>the<span class="_ _a"> </span>protocol</div><div class="t m0 xa h6 y51 ff4 fs3 fc0 sc0 ls0 ws0">la<span class="_ _2"></span>yers<span class="_ _9"> </span>from<span class="_ _3"> </span>the<span class="_ _3"> </span>MAC<span class="_ _9"> </span>up<span class="_ _3"> </span>to<span class="_ _3"> </span>the<span class="_ _3"> </span>application.<span class="_ _11"> </span>A<span class="_ _3"> </span>&#64257;rst<span class="_ _3"> </span>step<span class="_ _3"> </span>in</div><div class="t m0 xa h6 y52 ff4 fs3 fc0 sc0 ls0 ws0">this<span class="_ _a"> </span>direction<span class="_ _a"> </span>is<span class="_ _4"> </span>done<span class="_ _a"> </span>with<span class="_ _a"> </span>[20],<span class="_ _4"> </span>whic<span class="_ _2"></span>h<span class="_ _a"> </span>is<span class="_ _a"> </span>an<span class="_ _4"> </span>open<span class="_ _4"> </span>source<span class="_ _a"> </span>L<span class="_ _6"></span>TE</div><div class="t m0 xa h6 y53 ff4 fs3 fc0 sc0 ls0 ws0">net<span class="_ _2"></span>work<span class="_ _9"> </span>simulator<span class="_ _9"> </span>that<span class="_ _3"> </span>supp<span class="_ _7"></span>orts<span class="_ _3"> </span>single<span class="_ _3"> </span>and<span class="_ _3"> </span>multi-cell<span class="_ _9"> </span>envi-</div><div class="t m0 xa h6 y54 ff4 fs3 fc0 sc0 ls0 ws0">ronmen<span class="_ _2"></span>ts,<span class="_ _9"> </span>QoS<span class="_ _3"> </span>managemen<span class="_ _2"></span>t,<span class="_ _9"> </span>multi<span class="_ _4"> </span>users<span class="_ _3"> </span>en<span class="_ _2"></span>vironment,<span class="_ _4"> </span>user</div><div class="t m0 xa h6 y55 ff4 fs3 fc0 sc0 ls0 ws0">mobilit<span class="_ _2"></span>y<span class="_ _6"></span>,<span class="_ _0"> </span>hando<span class="_ _6"></span>ver<span class="_ _11"> </span>procedures,<span class="_ _0"> </span>scheduling,<span class="_ _11"> </span>and<span class="_ _11"> </span>frequency</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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