uav deployment strategy.zip

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uav deployment strategy.zip
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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/62527a6774bc5c0105d527af/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/62527a6774bc5c0105d527af/bg1.jpg"><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">arXiv:1809.04963v1 [cs.IT] 13 Sep 2018</div><div class="t m1 x2 h3 y2 ff2 fs1 fc1 sc0 ls0 ws0">1</div><div class="t m1 x3 h4 y3 ff2 fs2 fc1 sc0 ls0 ws0">Placement<span class="_ _0"> </span>Optimizati<span class="_ _1"></span>on<span class="_ _0"> </span>for<span class="_ _0"> </span>U<span class="_ _2"></span>A<span class="_ _3"></span>V<span class="_ _4"></span>-Enabled<span class="_ _0"> </span>W<span class="_ _2"></span>i<span class="_ _1"></span>reless</div><div class="t m1 x4 h4 y4 ff2 fs2 fc1 sc0 ls0 ws0">Netw<span class="_ _1"></span>orks<span class="_ _0"> </span>with<span class="_ _0"> </span>Multi-Hop<span class="_ _0"> </span>Backhauls</div><div class="t m1 x5 h5 y5 ff2 fs3 fc1 sc0 ls0 ws0">Peiming<span class="_ _5"> </span>Li<span class="_ _5"> </span>and<span class="_ _5"> </span>Jie<span class="_ _6"> </span>Xu</div><div class="t m1 x6 h6 y6 ff2 fs4 fc1 sc0 ls0 ws0">(*)</div><div class="t m1 x7 h7 y7 ff3 fs5 fc1 sc0 ls0 ws0">Abstract<span class="ff4">&#8212;Unmanned<span class="_ _6"> </span>aerial<span class="_ _6"> </span>vehicles<span class="_ _6"> </span>(U<span class="_ _2"></span>A<span class="_ _7"></span>Vs)<span class="_ _6"> </span>ha<span class="_ _1"></span>v<span class="_ _1"></span>e<span class="_ _6"> </span>emerged<span class="_ _6"> </span>as</span></div><div class="t m1 x8 h8 y8 ff4 fs5 fc1 sc0 ls0 ws0">a<span class="_ _6"> </span>pr<span class="_ _1"></span>omising<span class="_ _6"> </span>so<span class="_ _1"></span>lution<span class="_ _6"> </span>to<span class="_ _6"> </span>pr<span class="_ _1"></span>ovide<span class="_ _8"> </span>wireless<span class="_ _8"> </span>data<span class="_ _6"> </span>access<span class="_ _8"> </span>for<span class="_ _6"> </span>gr<span class="_ _1"></span>ound</div><div class="t m1 x8 h8 y9 ff4 fs5 fc1 sc0 ls0 ws0">users<span class="_ _9"> </span>in<span class="_ _9"> </span>var<span class="_ _1"></span>ious<span class="_ _9"> </span>appl<span class="_ _a"></span>ications<span class="_ _9"> </span>(e.g.,<span class="_ _b"> </span>in<span class="_ _b"> </span>emergency<span class="_ _9"> </span>situations).</div><div class="t m1 x8 h8 ya ff4 fs5 fc1 sc0 ls0 ws0">This<span class="_ _8"> </span>paper<span class="_ _6"> </span>considers<span class="_ _8"> </span>a<span class="_ _8"> </span>U<span class="_ _1"></span>A<span class="_ _c"></span>V<span class="_ _2"></span>-enabled<span class="_ _8"> </span>wireless<span class="_ _8"> </span>network,<span class="_ _6"> </span>in<span class="_ _8"> </span>which</div><div class="t m1 x8 h8 yb ff4 fs5 fc1 sc0 ls0 ws0">multiple<span class="_ _d"> </span>U<span class="_ _1"></span>A<span class="_ _c"></span>Vs<span class="_ _e"> </span>are<span class="_ _e"> </span>depl<span class="_ _a"></span>oyed<span class="_ _e"> </span>as<span class="_ _e"> </span>aerial<span class="_ _d"> </span>b<span class="_ _a"></span>ase<span class="_ _e"> </span>stations<span class="_ _d"> </span>(BSs)<span class="_ _d"> </span>to<span class="_ _d"> </span>serve</div><div class="t m1 x8 h8 yc ff4 fs5 fc1 sc0 ls0 ws0">users<span class="_ _d"> </span>distributed<span class="_ _e"> </span>on<span class="_ _d"> </span>the<span class="_ _d"> </span>ground.<span class="_ _d"> </span>Different<span class="_ _e"> </span>from<span class="_ _d"> </span>prior<span class="_ _d"> </span>works<span class="_ _d"> </span>that</div><div class="t m1 x8 h8 yd ff4 fs5 fc1 sc0 ls0 ws0">ignore<span class="_ _d"> </span>U<span class="_ _1"></span>A<span class="_ _c"></span>Vs&#8217;<span class="_ _d"> </span>backhau<span class="_ _a"></span>l<span class="_ _d"> </span>connections,<span class="_ _8"> </span>we<span class="_ _d"> </span>practically<span class="_ _8"> </span>consider<span class="_ _d"> </span>t<span class="_ _a"></span>hat</div><div class="t m1 x8 h8 ye ff4 fs5 fc1 sc0 ls0 ws0">these<span class="_ _d"> </span>U<span class="_ _1"></span>A<span class="_ _c"></span>Vs<span class="_ _d"> </span>are<span class="_ _d"> </span>connected<span class="_ _8"> </span>to<span class="_ _d"> </span>the<span class="_ _d"> </span>core<span class="_ _d"> </span>n<span class="_"> </span>etwork<span class="_ _d"> </span>th<span class="_ _a"></span>rough<span class="_ _e"> </span>a<span class="_ _8"> </span>gro<span class="_ _1"></span>und</div><div class="t m1 x8 h8 yf ff4 fs5 fc1 sc0 ls0 ws0">gateway<span class="_ _8"> </span>node<span class="_ _8"> </span>via<span class="_ _8"> </span>rate-limited<span class="_ _8"> </span>mult<span class="_"> </span>i<span class="_ _a"></span>-hop<span class="_ _8"> </span>wireless<span class="_ _8"> </span>backhauls.<span class="_ _8"> </span>W<span class="_ _2"></span>e</div><div class="t m1 x8 h8 y10 ff4 fs5 fc1 sc0 ls0 ws0">also<span class="_ _f"> </span>consider<span class="_ _f"> </span>that<span class="_ _f"> </span>the<span class="_ _f"> </span>air<span class="_ _1"></span>-to-gro<span class="_ _1"></span>und<span class="_ _f"> </span>(A2G)<span class="_ _f"> </span>access<span class="_ _f"> </span>link<span class="_ _a"></span>s<span class="_ _f"> </span>from<span class="_ _f"> </span>U<span class="_ _2"></span>A<span class="_ _c"></span>Vs</div><div class="t m1 x8 h8 y11 ff4 fs5 fc1 sc0 ls0 ws0">to<span class="_ _e"> </span>users<span class="_ _e"> </span>and<span class="_ _e"> </span>the<span class="_ _e"> </span>air-to<span class="_ _1"></span>-air<span class="_ _e"> </span>(<span class="_"> </span>A<span class="_"> </span>2A)<span class="_ _e"> </span>b<span class="_ _a"></span>ackhaul<span class="_ _e"> </span>links<span class="_ _e"> </span>among<span class="_ _e"> </span>U<span class="_ _1"></span>A<span class="_ _c"></span>Vs<span class="_ _e"> </span>are</div><div class="t m1 x8 h8 y12 ff4 fs5 fc1 sc0 ls0 ws0">operated<span class="_ _d"> </span>over<span class="_ _d"> </span>orthogonal<span class="_ _8"> </span>frequency<span class="_ _e"> </span>b<span class="_ _a"></span>ands.<span class="_ _d"> </span>Under<span class="_ _d"> </span>th<span class="_ _a"></span>is<span class="_ _d"> </span>setup,<span class="_ _8"> </span>we</div><div class="t m1 x8 h8 y13 ff4 fs5 fc1 sc0 ls0 ws0">aim<span class="_ _8"> </span>to<span class="_ _8"> </span>maximize<span class="_ _8"> </span>the<span class="_ _8"> </span>common<span class="_ _8"> </span>(or<span class="_ _6"> </span>minimum)<span class="_ _8"> </span>thro<span class="_ _1"></span>ughput<span class="_ _8"> </span>among</div><div class="t m1 x8 h8 y14 ff4 fs5 fc1 sc0 ls0 ws0">all<span class="_ _6"> </span>the<span class="_ _8"> </span>ground<span class="_ _6"> </span>users<span class="_ _8"> </span>in<span class="_ _6"> </span>the<span class="_ _6"> </span>do<span class="_ _1"></span>wnlink<span class="_ _6"> </span>of<span class="_ _6"> </span>this<span class="_ _8"> </span>network<span class="_ _6"> </span>subject<span class="_ _8"> </span>to</div><div class="t m1 x8 h8 y15 ff4 fs5 fc1 sc0 ls0 ws0">the<span class="_ _10"> </span>&#64258;ow<span class="_ _10"> </span>conserv<span class="_ _1"></span>ation<span class="_ _10"> </span>constrain<span class="_"> </span>t<span class="_"> </span>s<span class="_ _10"> </span>at<span class="_ _10"> </span>t<span class="_"> </span>h<span class="_ _a"></span>e<span class="_ _10"> </span>U<span class="_ _1"></span>A<span class="_ _c"></span>Vs,<span class="_ _10"> </span>by<span class="_ _10"> </span>optimizing</div><div class="t m1 x8 h8 y16 ff4 fs5 fc1 sc0 ls0 ws0">the<span class="_ _b"> </span>U<span class="_ _1"></span>A<span class="_ _c"></span>Vs&#8217;<span class="_ _b"> </span>deployment<span class="_ _b"> </span>locations,<span class="_ _9"> </span>jointly<span class="_ _b"> </span>with<span class="_ _9"> </span>the<span class="_ _b"> </span>bandwidth</div><div class="t m1 x8 h8 y17 ff4 fs5 fc1 sc0 ls0 ws0">and<span class="_ _10"> </span>power<span class="_ _10"> </span>allocation<span class="_ _10"> </span>of<span class="_ _11"> </span>both<span class="_ _10"> </span>the<span class="_ _10"> </span>access<span class="_ _11"> </span>and<span class="_ _10"> </span>backhaul<span class="_ _10"> </span>lin<span class="_ _a"></span>ks.</div><div class="t m1 x8 h8 y18 ff4 fs5 fc1 sc0 ls0 ws0">Howe<span class="_ _1"></span>ver<span class="_ _7"></span>,<span class="_ _8"> </span>the<span class="_ _8"> </span>com<span class="_ _1"></span>mon<span class="_ _8"> </span>throughput<span class="_ _e"> </span>maximization<span class="_ _8"> </span>is<span class="_ _d"> </span>a<span class="_ _8"> </span>non-con<span class="_ _1"></span>vex</div><div class="t m1 x8 h8 y19 ff4 fs5 fc1 sc0 ls0 ws0">optimization<span class="_ _6"> </span>pro<span class="_ _1"></span>blem<span class="_ _8"> </span>th<span class="_ _a"></span>at<span class="_ _8"> </span>i<span class="_ _a"></span>s<span class="_ _8"> </span>d<span class="_ _a"></span>if&#64257;cult<span class="_ _8"> </span>to<span class="_ _6"> </span>be<span class="_ _6"> </span>solv<span class="_ _1"></span>ed<span class="_ _6"> </span>optimally<span class="_ _2"></span>.<span class="_ _6"> </span>T<span class="_ _7"></span>o</div><div class="t m1 x8 h8 y1a ff4 fs5 fc1 sc0 ls0 ws0">tackle<span class="_ _f"> </span>this<span class="_ _f"> </span>i<span class="_ _a"></span>ssue,<span class="_ _f"> </span>we<span class="_ _f"> </span>use<span class="_ _e"> </span>the<span class="_ _f"> </span>techniques<span class="_ _f"> </span>of<span class="_ _f"> </span>alternating<span class="_ _f"> </span>optimization</div><div class="t m1 x8 h8 y1b ff4 fs5 fc1 sc0 ls0 ws0">and<span class="_ _12"> </span>successiv<span class="_ _1"></span>e<span class="_ _12"> </span>conv<span class="_ _1"></span>ex<span class="_ _12"> </span>programm<span class="_ _1"></span>ing<span class="_ _12"> </span>(SCP)<span class="_ _12"> </span>to<span class="_ _12"> </span>obtain<span class="_ _12"> </span>a<span class="_ _12"> </span>locally</div><div class="t m1 x8 h8 y1c ff4 fs5 fc1 sc0 ls0 ws0">optimal<span class="_ _f"> </span>solution.<span class="_ _f"> </span>Numerical<span class="_ _f"> </span>results<span class="_ _f"> </span>show<span class="_ _f"> </span>that<span class="_ _f"> </span>the<span class="_ _f"> </span>proposed<span class="_ _f"> </span>design</div><div class="t m1 x8 h8 y1d ff4 fs5 fc1 sc0 ls0 ws0">signi&#64257;cantly<span class="_ _e"> </span>improv<span class="_ _1"></span>es<span class="_ _e"> </span>the<span class="_ _e"> </span>common<span class="_ _e"> </span>th<span class="_ _a"></span>roughput<span class="_ _f"> </span>among<span class="_ _d"> </span>all<span class="_ _e"> </span>ground</div><div class="t m1 x8 h8 y1e ff4 fs5 fc1 sc0 ls0 ws0">users<span class="_ _8"> </span>as<span class="_ _6"> </span>compar<span class="_ _1"></span>ed<span class="_ _8"> </span>to<span class="_ _6"> </span>other<span class="_ _8"> </span>benchmark<span class="_ _8"> </span>schemes.</div><div class="t m1 x7 h7 y1f ff3 fs5 fc1 sc0 ls0 ws0">Index<span class="_ _12"> </span>T<span class="_ _2"></span>erms<span class="ff4">&#8212;Unmanned<span class="_ _12"> </span>aerial<span class="_ _12"> </span>vehicle<span class="_ _12"> </span>(U<span class="_ _1"></span>A<span class="_ _c"></span>V),<span class="_ _12"> </span>wireless<span class="_ _12"> </span>net-</span></div><div class="t m1 x8 h8 y20 ff4 fs5 fc1 sc0 ls0 ws0">works,<span class="_ _b"> </span>mult<span class="_"> </span>i<span class="_ _a"></span>-hop<span class="_ _b"> </span>backhaul<span class="_ _a"></span>s,<span class="_ _b"> </span>dep<span class="_ _a"></span>loyment<span class="_ _b"> </span>optimization,<span class="_ _9"> </span>band-</div><div class="t m1 x8 h8 y21 ff4 fs5 fc1 sc0 ls0 ws0">width<span class="_ _8"> </span>and<span class="_ _6"> </span>po<span class="_ _1"></span>wer<span class="_ _8"> </span>all<span class="_"> </span>ocation.</div><div class="t m1 x9 h9 y22 ff2 fs6 fc1 sc0 ls0 ws0">I<span class="_ _a"></span>.<span class="_ _b"> </span>I<span class="_ _13"></span><span class="fs7">N<span class="_ _a"></span>T<span class="_ _13"></span>RO<span class="_ _13"></span>D<span class="_ _a"></span>U<span class="_ _13"></span>C<span class="_ _a"></span>T<span class="_ _13"></span>I<span class="_ _a"></span>O<span class="_ _a"></span>N</span></div><div class="t m1 x8 ha y23 ff4 fs8 fc1 sc0 ls0 ws0">U</div><div class="t m1 xa h9 y24 ff2 fs6 fc1 sc0 ls0 ws0">NMANNED<span class="_ _14"> </span>aerial<span class="_ _14"> </span>vehicles<span class="_ _14"> </span>(U<span class="_ _2"></span>A<span class="_ _7"></span>Vs),<span class="_ _14"> </span>also<span class="_ _14"> </span>known<span class="_ _15"> </span>as</div><div class="t m1 xa h9 y25 ff2 fs6 fc1 sc0 ls0 ws0">(a.k.a.)<span class="_ _8"> </span>dr<span class="_ _a"></span>ones,<span class="_ _8"> </span>have<span class="_ _8"> </span>found<span class="_ _8"> </span>a<span class="_ _6"> </span>wide<span class="_ _8"> </span>rang<span class="_"> </span>e<span class="_ _8"> </span>of<span class="_ _6"> </span>applications</div><div class="t m1 x8 h9 y26 ff2 fs6 fc1 sc0 ls0 ws0">in,<span class="_ _d"> </span>e.g.,<span class="_ _d"> </span>cargo<span class="_ _d"> </span>delivery<span class="_ _2"></span>,<span class="_ _e"> </span>aerial<span class="_ _d"> </span>inspe<span class="_"> </span>c<span class="_ _a"></span>tion,<span class="_ _e"> </span>p<span class="_ _a"></span>recision<span class="_ _d"> </span>agricu<span class="_ _a"></span>lture,</div><div class="t m1 x8 h9 y27 ff2 fs6 fc1 sc0 ls0 ws0">and<span class="_ _10"> </span>tra<span class="_"> </span>f&#64257;c<span class="_ _10"> </span>mon<span class="_ _a"></span>itoring.<span class="_ _10"> </span>Among<span class="_ _10"> </span>other<span class="_ _a"></span>s,<span class="_ _10"> </span>employing<span class="_ _10"> </span>UA<span class="_ _c"></span>Vs<span class="_ _10"> </span>as</div><div class="t m1 x8 h9 y28 ff2 fs6 fc1 sc0 ls0 ws0">aerial<span class="_ _10"> </span>communicatio<span class="_"> </span>n<span class="_ _12"> </span>p<span class="_ _a"></span>latforms<span class="_ _10"> </span>to<span class="_ _10"> </span>assist<span class="_ _12"> </span>terr<span class="_ _a"></span>estrial<span class="_ _10"> </span>wireless</div><div class="t m1 x8 h9 y29 ff2 fs6 fc1 sc0 ls0 ws0">commun<span class="_ _a"></span>ications<span class="_ _d"> </span>has<span class="_ _8"> </span>recently<span class="_ _8"> </span>emerged<span class="_ _d"> </span>as<span class="_ _8"> </span>one<span class="_ _8"> </span>of<span class="_ _8"> </span>the<span class="_ _8"> </span>key<span class="_ _d"> </span>tech-</div><div class="t m1 x8 h9 y2a ff2 fs6 fc1 sc0 ls0 ws0">nologies<span class="_ _d"> </span>for<span class="_ _d"> </span>the<span class="_ _d"> </span>&#64257;fth-gen<span class="_ _a"></span>eration<span class="_ _e"> </span>(5G)<span class="_ _e"> </span>cellu<span class="_ _a"></span>lar<span class="_ _d"> </span>networks,<span class="_ _e"> </span>which</div><div class="t m1 x8 h9 y2b ff2 fs6 fc1 sc0 ls0 ws0">has<span class="_ _e"> </span>attracted<span class="_ _e"> </span>a<span class="_ _e"> </span>lot<span class="_ _e"> </span>of<span class="_ _e"> </span>interests<span class="_ _e"> </span>from<span class="_ _e"> </span>both<span class="_ _e"> </span>academia<span class="_ _e"> </span>and<span class="_ _e"> </span>industry</div><div class="t m1 x8 h9 y2c ff2 fs6 fc1 sc0 ls0 ws0">[1,<span class="_ _8"> </span>2].<span class="_ _8"> </span>For<span class="_ _8"> </span>example,<span class="_ _8"> </span>U<span class="_ _1"></span>A<span class="_ _c"></span>Vs<span class="_ _8"> </span>can<span class="_ _8"> </span>be<span class="_ _8"> </span>used<span class="_ _8"> </span>as<span class="_ _8"> </span>aerial<span class="_ _8"> </span>base<span class="_ _8"> </span>stations</div><div class="t m1 x8 h9 y2d ff2 fs6 fc1 sc0 ls0 ws0">(BSs)<span class="_ _5"> </span>to<span class="_ _5"> </span>provide<span class="_ _5"> </span>basic<span class="_ _6"> </span>w<span class="_"> </span>ir<span class="_ _a"></span>eless<span class="_ _5"> </span>data<span class="_ _5"> </span>access<span class="_ _5"> </span>for<span class="_ _5"> </span>remote<span class="_ _5"> </span>areas</div><div class="t m1 x8 h9 y2e ff2 fs6 fc1 sc0 ls0 ws0">and<span class="_ _5"> </span>in<span class="_ _12"> </span>emergency<span class="_ _6"> </span>situations<span class="_ _5"> </span>(<span class="_ _a"></span>e.g.,<span class="_ _5"> </span>af<span class="_ _a"></span>ter<span class="_ _5"> </span>natur<span class="_ _a"></span>al<span class="_ _5"> </span>disasters),<span class="_ _5"> </span>as</div><div class="t m1 x8 h9 y2f ff2 fs6 fc1 sc0 ls0 ws0">well<span class="_ _e"> </span>as<span class="_ _8"> </span>to<span class="_ _e"> </span>enh<span class="_ _a"></span>ance<span class="_ _e"> </span>th<span class="_ _a"></span>e<span class="_ _e"> </span>network<span class="_ _d"> </span>capacity<span class="_ _d"> </span>in<span class="_ _d"> </span>terrestrial<span class="_ _d"> </span>ho<span class="_ _a"></span>t<span class="_ _e"> </span>spots</div><div class="t m1 x8 h9 y30 ff2 fs6 fc1 sc0 ls0 ws0">[3&#8211;7].<span class="_ _e"> </span>On<span class="_ _e"> </span>th<span class="_ _a"></span>e<span class="_ _e"> </span>other<span class="_ _d"> </span>hand,<span class="_ _e"> </span>U<span class="_ _1"></span>A<span class="_ _c"></span>Vs<span class="_ _e"> </span>can<span class="_ _d"> </span>be<span class="_ _e"> </span>utilized<span class="_ _d"> </span>as<span class="_ _e"> </span>aerial<span class="_ _d"> </span>relays</div><div class="t m1 x8 h9 y31 ff2 fs6 fc1 sc0 ls0 ws0">to<span class="_ _e"> </span>help<span class="_ _e"> </span>far-apart<span class="_ _f"> </span>g<span class="_ _a"></span>round<span class="_ _e"> </span>users<span class="_ _e"> </span>exchange<span class="_ _e"> </span>information<span class="_ _e"> </span>[8,<span class="_ _e"> </span>9],<span class="_ _e"> </span>and</div><div class="t m1 x8 h9 y32 ff2 fs6 fc1 sc0 ls0 ws0">as<span class="_ _8"> </span>a<span class="_ _a"></span>ccess<span class="_ _8"> </span>p<span class="_ _a"></span>oints<span class="_ _8"> </span>in<span class="_ _6"> </span>the<span class="_ _8"> </span>sky<span class="_ _8"> </span>fo<span class="_ _a"></span>r<span class="_ _8"> </span>inf<span class="_ _a"></span>ormation<span class="_ _8"> </span>dissemination<span class="_ _6"> </span>and</div><div class="t m1 x8 h9 y33 ff2 fs6 fc1 sc0 ls0 ws0">data<span class="_ _8"> </span>collection<span class="_ _8"> </span>with<span class="_ _8"> </span>gro<span class="_ _a"></span>und<span class="_ _8"> </span>nodes<span class="_ _8"> </span>(e.g.,<span class="_ _8"> </span>sensors<span class="_ _8"> </span>and<span class="_ _8"> </span>actuators</div><div class="t m1 xb hb y34 ff2 fs7 fc1 sc0 ls0 ws0">Part<span class="_ _e"> </span>of<span class="_ _f"> </span>this<span class="_ _e"> </span>paper<span class="_ _e"> </span>has<span class="_ _e"> </span>bee<span class="_ _1"></span>n<span class="_ _e"> </span>submitted<span class="_ _e"> </span>to<span class="_ _e"> </span>the<span class="_ _f"> </span>IEEE<span class="_ _e"> </span>Internat<span class="_ _1"></span>ional<span class="_ _d"> </span>Conferen<span class="_ _1"></span>ce</div><div class="t m1 x8 hb y35 ff2 fs7 fc1 sc0 ls0 ws0">on<span class="_ _d"> </span>Communicati<span class="_ _1"></span>on<span class="_ _8"> </span>Syste<span class="_ _1"></span>ms<span class="_ _d"> </span>(ICCS),<span class="_ _d"> </span>Chengdu,<span class="_ _d"> </span>China,<span class="_ _d"> </span>Dec.<span class="_ _d"> </span>19&#8211;21,<span class="_ _d"> </span>2018.</div><div class="t m1 xb hb y36 ff2 fs7 fc1 sc0 ls0 ws0">This<span class="_ _f"> </span>w<span class="_ _1"></span>ork<span class="_ _f"> </span>w<span class="_ _1"></span>as<span class="_ _16"> </span>supported<span class="_ _16"> </span>in<span class="_ _16"> </span>part<span class="_ _16"> </span>by<span class="_ _16"> </span>the<span class="_ _16"> </span>National<span class="_ _16"> </span>Natural<span class="_ _f"> </span>Scienc<span class="_ _1"></span>e<span class="_ _f"> </span>Founda<span class="_ _1"></span>tion</div><div class="t m1 x8 hb y37 ff2 fs7 fc1 sc0 ls0 ws0">of<span class="_ _d"> </span>China<span class="_ _d"> </span>(Project<span class="_ _e"> </span>N<span class="_"> </span>o.<span class="_ _d"> </span>61871137).</div><div class="t m1 xb hb y38 ff2 fs7 fc1 sc0 ls0 ws0">The<span class="_ _10"> </span>autho<span class="_ _1"></span>rs<span class="_ _10"> </span>are<span class="_ _10"> </span>wi<span class="_ _1"></span>th<span class="_ _10"> </span>the<span class="_ _12"> </span>School<span class="_ _10"> </span>of<span class="_ _12"> </span>Information<span class="_ _10"> </span>Engineeri<span class="_ _1"></span>ng,<span class="_ _10"> </span>Guang-</div><div class="t m1 x8 hb y39 ff2 fs7 fc1 sc0 ls0 ws0">dong<span class="_ _e"> </span>U<span class="_"> </span>nive<span class="_ _1"></span>rsity<span class="_ _d"> </span>of<span class="_ _d"> </span>T<span class="_ _1"></span>echnol<span class="_ _1"></span>ogy<span class="_ _2"></span>,<span class="_ _8"> </span>Guangzhou,<span class="_ _d"> </span>510006,<span class="_ _d"> </span>China<span class="_ _d"> </span>(e-mail:<span class="_ _d"> </span>peimin-</div><div class="t m1 x8 hb y3a ff2 fs7 fc1 sc0 ls0 ws0">glee@ou<span class="_ _1"></span>tlook.com,<span class="_ _8"> </span>jie<span class="_ _1"></span>xu@gdut<span class="_ _1"></span>.edu.cn).<span class="_ _8"> </span>J.<span class="_ _e"> </span>Xu<span class="_ _d"> </span>is<span class="_ _d"> </span>the<span class="_ _d"> </span>corresponding<span class="_ _d"> </span>author<span class="_ _2"></span>.</div><div class="t m1 xc h9 y3b ff2 fs6 fc1 sc0 ls0 ws0">in<span class="_ _10"> </span>Internet-<span class="_"> </span>o<span class="_ _a"></span>f-thing<span class="_ _a"></span>s<span class="_ _12"> </span>(IoT)<span class="_ _10"> </span>networks)<span class="_ _10"> </span>[10].<span class="_ _10"> </span>Besides<span class="_ _10"> </span>w<span class="_"> </span>ir<span class="_ _a"></span>eless</div><div class="t m1 xc h9 y3c ff2 fs6 fc1 sc0 ls0 ws0">commun<span class="_ _a"></span>ications,<span class="_ _6"> </span>UA<span class="_ _c"></span>Vs<span class="_ _6"> </span>can<span class="_ _12"> </span>also<span class="_ _5"> </span>b<span class="_"> </span>e<span class="_ _12"> </span>used<span class="_ _5"> </span>as<span class="_ _12"> </span>aerial<span class="_ _5"> </span>platform<span class="_ _a"></span>s</div><div class="t m1 xc h9 y3d ff2 fs6 fc1 sc0 ls0 ws0">for<span class="_ _8"> </span>wireless<span class="_ _8"> </span>power<span class="_ _d"> </span>tra<span class="_ _a"></span>nsfer<span class="_ _8"> </span>(WPT)<span class="_ _8"> </span>[11,<span class="_ _8"> </span>12],<span class="_ _8"> </span>wireless<span class="_ _8"> </span>powered</div><div class="t m1 xc h9 y3e ff2 fs6 fc1 sc0 ls0 ws0">commun<span class="_ _a"></span>ication<span class="_ _f"> </span>networks<span class="_ _f"> </span>(<span class="_ _a"></span>WPCN)<span class="_ _f"> </span>[<span class="_ _a"></span>13],<span class="_ _e"> </span>and<span class="_ _f"> </span>mo<span class="_ _a"></span>bile<span class="_ _f"> </span>ed<span class="_ _a"></span>ge<span class="_ _f"> </span>com<span class="_ _a"></span>-</div><div class="t m1 xc h9 y3f ff2 fs6 fc1 sc0 ls0 ws0">puting<span class="_ _12"> </span>(MEC)<span class="_ _6"> </span>[1<span class="_ _a"></span>4].<span class="_ _5"> </span>I<span class="_"> </span>n<span class="_ _12"> </span>the<span class="_ _5"> </span>in<span class="_ _a"></span>dustry<span class="_ _1"></span>,<span class="_ _6"> </span>various<span class="_ _5"> </span>comp<span class="_ _a"></span>anies<span class="_ _6"> </span>h<span class="_ _a"></span>av<span class="_ _1"></span>e</div><div class="t m1 xc h9 y40 ff2 fs6 fc1 sc0 ls0 ws0">launched<span class="_ _d"> </span>th<span class="_ _a"></span>eir<span class="_ _d"> </span>UA<span class="_ _c"></span>V<span class="_ _7"></span>-assisted<span class="_ _d"> </span>wireless<span class="_ _8"> </span>communicatio<span class="_ _a"></span>n<span class="_ _e"> </span>projects,</div><div class="t m1 xc h9 y41 ff2 fs6 fc1 sc0 ls0 ws0">and<span class="_ _12"> </span>some<span class="_ _5"> </span>p<span class="_ _a"></span>reliminary<span class="_ _5"> </span>pr<span class="_ _a"></span>ototype<span class="_"> </span>s<span class="_ _12"> </span>include<span class="_ _5"> </span>Facebook<span class="_ _a"></span>&#8217;<span class="_ _2"></span>s<span class="_ _5"> </span>Aq<span class="_ _a"></span>uila</div><div class="t m1 xc h9 y42 ff2 fs6 fc1 sc0 ls0 ws0">[15]<span class="_ _8"> </span>an<span class="_ _a"></span>d<span class="_ _8"> </span>No<span class="_ _a"></span>kia&#8217;<span class="_ _1"></span>s<span class="_ _8"> </span>&#64258;ying-cell<span class="_ _6"> </span>(F-Cell)<span class="_ _8"> </span>[16].</div><div class="t m1 xd h9 y43 ff2 fs6 fc1 sc0 ls0 ws0">As<span class="_ _8"> </span>comp<span class="_ _a"></span>ared<span class="_ _8"> </span>to<span class="_ _6"> </span>con<span class="_ _1"></span>ventional<span class="_ _d"> </span>terrestrial<span class="_ _8"> </span>wir<span class="_"> </span>e<span class="_"> </span>le<span class="_"> </span>ss<span class="_ _6"> </span>commun<span class="_ _a"></span>i-</div><div class="t m1 xc h9 y44 ff2 fs6 fc1 sc0 ls0 ws0">cations,<span class="_ _5"> </span>U<span class="_ _1"></span>A<span class="_ _c"></span>V<span class="_ _2"></span>-assisted<span class="_ _6"> </span>wireless<span class="_ _5"> </span>commun<span class="_ _a"></span>ications<span class="_ _6"> </span>have<span class="_ _6"> </span>the<span class="_ _5"> </span>fol-</div><div class="t m1 xc h9 y45 ff2 fs6 fc1 sc0 ls0 ws0">lowing<span class="_ _6"> </span>advantages.<span class="_ _6"> </span>First,<span class="_ _6"> </span>U<span class="_ _1"></span>A<span class="_ _c"></span>V<span class="_ _7"></span>-ena<span class="_ _a"></span>bled<span class="_ _6"> </span>aerial<span class="_ _6"> </span>comm<span class="_"> </span>u<span class="_ _a"></span>nication</div><div class="t m1 xc h9 y46 ff2 fs6 fc1 sc0 ls0 ws0">platforms<span class="_ _5"> </span>can<span class="_ _5"> </span>be<span class="_ _12"> </span>quickly<span class="_ _6"> </span>d<span class="_ _a"></span>eployed<span class="_ _6"> </span>o<span class="_ _a"></span>n<span class="_ _5"> </span>demand<span class="_ _a"></span>,<span class="_ _6"> </span>and<span class="_ _12"> </span>thus<span class="_ _6"> </span>are</div><div class="t m1 xc h9 y47 ff2 fs6 fc1 sc0 ls0 ws0">cost-effecti<span class="_ _1"></span>ve<span class="_ _e"> </span>and<span class="_ _e"> </span>suitable<span class="_ _d"> </span>for<span class="_ _e"> </span>emergen<span class="_ _a"></span>cy<span class="_ _f"> </span>scenario<span class="_ _a"></span>s,<span class="_ _e"> </span>e.g.<span class="_ _a"></span>,<span class="_ _e"> </span>when</div><div class="t m1 xc h9 y48 ff2 fs6 fc1 sc0 ls0 ws0">the<span class="_ _b"> </span>ter<span class="_ _a"></span>restrial<span class="_ _b"> </span>wir<span class="_ _a"></span>eless<span class="_ _b"> </span>in<span class="_ _a"></span>frastructur<span class="_ _a"></span>es<span class="_ _b"> </span>are<span class="_ _9"> </span>damaged<span class="_ _9"> </span>due<span class="_ _b"> </span>to</div><div class="t m1 xc h9 y49 ff2 fs6 fc1 sc0 ls0 ws0">natural<span class="_ _e"> </span>disasters.<span class="_ _d"> </span>Next,<span class="_ _e"> </span>the<span class="_ _d"> </span>air-to-groun<span class="_ _a"></span>d<span class="_ _f"> </span>(<span class="_ _a"></span>A2G)<span class="_ _e"> </span>wireless<span class="_ _d"> </span>chan-</div><div class="t m1 xc h9 y4a ff2 fs6 fc1 sc0 ls0 ws0">nels<span class="_ _12"> </span>between<span class="_ _12"> </span>UA<span class="_ _c"></span>Vs<span class="_ _12"> </span>and<span class="_ _12"> </span>ground<span class="_ _12"> </span>nodes<span class="_ _12"> </span>nor<span class="_ _a"></span>mally<span class="_ _12"> </span>ha<span class="_ _1"></span>ve<span class="_ _12"> </span>much</div><div class="t m1 xc h9 y4b ff2 fs6 fc1 sc0 ls0 ws0">stronger<span class="_ _12"> </span>line-of-<span class="_ _a"></span>sight<span class="_ _12"> </span>(LoS)<span class="_ _12"> </span>links<span class="_ _12"> </span>than<span class="_ _12"> </span>conventional<span class="_ _5"> </span>g<span class="_ _a"></span>round<span class="_ _a"></span>-</div><div class="t m1 xc h9 y4c ff2 fs6 fc1 sc0 ls0 ws0">to-gro<span class="_"> </span>u<span class="_ _a"></span>nd<span class="_ _d"> </span>(G2G)<span class="_ _d"> </span>wir<span class="_ _a"></span>eless<span class="_ _8"> </span>channels;<span class="_ _d"> </span>as<span class="_ _8"> </span>a<span class="_ _8"> </span>result,<span class="_ _d"> </span>th<span class="_"> </span>e<span class="_ _8"> </span>aerial<span class="_ _8"> </span>BSs</div><div class="t m1 xc h9 y4d ff2 fs6 fc1 sc0 ls0 ws0">are<span class="_ _12"> </span>expected<span class="_ _5"> </span>to<span class="_ _12"> </span>pr<span class="_ _a"></span>ovide<span class="_ _5"> </span>b<span class="_ _a"></span>etter<span class="_ _12"> </span>wireless<span class="_ _12"> </span>cov<span class="_ _1"></span>erage<span class="_ _12"> </span>and<span class="_ _12"> </span>higher</div><div class="t m1 xc h9 y4e ff2 fs6 fc1 sc0 ls0 ws0">commun<span class="_ _a"></span>ication<span class="_ _f"> </span>throu<span class="_ _a"></span>ghpu<span class="_"> </span>t<span class="_ _f"> </span>than<span class="_ _e"> </span>grou<span class="_ _a"></span>nd<span class="_ _f"> </span>BSs.<span class="_ _e"> </span>Furthe<span class="_"> </span>r<span class="_ _a"></span>more,<span class="_ _f"> </span>du<span class="_ _a"></span>e</div><div class="t m1 xc h9 y4f ff2 fs6 fc1 sc0 ls0 ws0">to<span class="_ _12"> </span>th<span class="_ _a"></span>e<span class="_ _12"> </span>fu<span class="_ _a"></span>lly<span class="_ _12"> </span>co<span class="_ _a"></span>ntrollable<span class="_ _12"> </span>mo<span class="_ _a"></span>bility<span class="_ _12"> </span>in<span class="_ _10"> </span>three-dimensio<span class="_"> </span>n<span class="_ _a"></span>al<span class="_ _12"> </span>(3D)</div><div class="t m1 xc h9 y50 ff2 fs6 fc1 sc0 ls0 ws0">airspace,<span class="_ _e"> </span>U<span class="_ _1"></span>A<span class="_ _c"></span>Vs<span class="_ _f"> </span>can<span class="_ _e"> </span>adap<span class="_ _a"></span>tiv<span class="_ _1"></span>ely<span class="_ _f"> </span>chan<span class="_ _a"></span>ge<span class="_ _e"> </span>their<span class="_ _f"> </span>location<span class="_ _a"></span>s<span class="_ _e"> </span>ov<span class="_ _1"></span>er<span class="_ _f"> </span>time</div><div class="t m1 xc h9 y51 ff2 fs6 fc1 sc0 ls0 ws0">for<span class="_ _5"> </span>redu<span class="_"> </span>c<span class="_ _a"></span>ing<span class="_ _6"> </span>the<span class="_ _5"> </span>distances<span class="_ _5"> </span>with<span class="_ _5"> </span>inten<span class="_ _a"></span>ded<span class="_ _6"> </span>g<span class="_ _a"></span>round<span class="_ _6"> </span>u<span class="_ _a"></span>sers,<span class="_ _6"> </span>so<span class="_ _12"> </span>as</div><div class="t m1 xc h9 y52 ff2 fs6 fc1 sc0 ls0 ws0">to<span class="_ _8"> </span>fu<span class="_ _a"></span>rther<span class="_ _8"> </span>imp<span class="_ _a"></span>rove<span class="_ _8"> </span>the<span class="_ _8"> </span>co<span class="_ _a"></span>mmunicatio<span class="_ _a"></span>n<span class="_ _8"> </span>perform<span class="_ _a"></span>ance.</div><div class="t m1 xd h9 y53 ff2 fs6 fc1 sc0 ls0 ws0">In<span class="_ _15"> </span>genera<span class="_ _a"></span>l,<span class="_ _15"> </span>U<span class="_ _2"></span>A<span class="_ _7"></span>V<span class="_ _2"></span>-enabled<span class="_ _9"> </span>aerial<span class="_ _14"> </span>wireless<span class="_ _15"> </span>communica<span class="_"> </span>tio<span class="_ _a"></span>n</div><div class="t m1 xc h9 y54 ff2 fs6 fc1 sc0 ls0 ws0">platforms<span class="_ _9"> </span>can<span class="_ _9"> </span>be<span class="_ _9"> </span>classi&#64257;ed<span class="_ _9"> </span>into<span class="_ _9"> </span>two<span class="_ _9"> </span>categories<span class="_ _b"> </span>dep<span class="_ _a"></span>ending</div><div class="t m1 xc h9 y55 ff2 fs6 fc1 sc0 ls0 ws0">on<span class="_ _10"> </span>whether<span class="_ _10"> </span>U<span class="_ _1"></span>A<span class="_ _c"></span>Vs<span class="_ _10"> </span>are<span class="_ _10"> </span>quasi-stationary<span class="_ _12"> </span>or<span class="_ _10"> </span>fully<span class="_ _10"> </span>mob<span class="_ _a"></span>ile.<span class="_ _10"> </span>F<span class="_ _1"></span>or</div><div class="t m1 xc h9 y56 ff2 fs6 fc1 sc0 ls0 ws0">quasi-stationar<span class="_ _a"></span>y<span class="_ _6"> </span>UA<span class="_ _c"></span>Vs,<span class="_ _5"> </span>prior<span class="_ _5"> </span>works<span class="_ _5"> </span>[<span class="_"> </span>4&#8211;7,<span class="_ _12"> </span>9,<span class="_ _5"> </span>17,<span class="_ _12"> </span>18]<span class="_ _6"> </span>f<span class="_ _a"></span>ocused</div><div class="t m1 xc h9 y57 ff2 fs6 fc1 sc0 ls0 ws0">on<span class="_ _12"> </span>the<span class="_ _10"> </span>optimization<span class="_ _10"> </span>of<span class="_ _12"> </span>their<span class="_ _12"> </span>d<span class="_ _a"></span>eployment<span class="_ _12"> </span>locatio<span class="_"> </span>n<span class="_ _a"></span>s<span class="_ _12"> </span>for<span class="_ _12"> </span>c<span class="_ _a"></span>om-</div><div class="t m1 xc h9 y58 ff2 fs6 fc1 sc0 ls0 ws0">munication<span class="_ _12"> </span>performanc<span class="_ _a"></span>e<span class="_ _6"> </span>imp<span class="_ _a"></span>rovement.<span class="_ _5"> </span>For<span class="_ _12"> </span>instance,<span class="_ _12"> </span>[6<span class="_ _1"></span>]<span class="_ _12"> </span>and</div><div class="t m1 xc h9 y59 ff2 fs6 fc1 sc0 ls0 ws0">[17]<span class="_ _11"> </span>op<span class="_"> </span>tim<span class="_ _a"></span>ized<span class="_ _11"> </span>the<span class="_ _b"> </span>two-dimensional<span class="_ _11"> </span>(2<span class="_ _a"></span>D)/3D<span class="_ _11"> </span>placemen<span class="_"> </span>t<span class="_ _b"> </span>of</div><div class="t m1 xc h9 y5a ff2 fs6 fc1 sc0 ls0 ws0">U<span class="_ _1"></span>A<span class="_ _c"></span>Vs<span class="_ _6"> </span>to<span class="_ _12"> </span>maximize<span class="_ _6"> </span>the<span class="_ _5"> </span>network<span class="_ _5"> </span>revenue<span class="_ _6"> </span>(i.e.,<span class="_ _5"> </span>the<span class="_ _5"> </span>numb<span class="_ _a"></span>er<span class="_ _6"> </span>of</div><div class="t m1 xc h9 y5b ff2 fs6 fc1 sc0 ls0 ws0">users<span class="_ _12"> </span>served<span class="_ _12"> </span>by<span class="_ _12"> </span>UA<span class="_ _c"></span>Vs<span class="_ _12"> </span>under<span class="_ _12"> </span>given<span class="_ _5"> </span>qu<span class="_ _a"></span>ality-of-ser<span class="_ _a"></span>vice<span class="_ _5"> </span>(<span class="_ _a"></span>QoS)</div><div class="t m1 xc h9 y5c ff2 fs6 fc1 sc0 ls0 ws0">requirem<span class="_ _a"></span>ent<span class="_ _8"> </span>at<span class="_ _8"> </span>each<span class="_ _6"> </span>user)<span class="_ _8"> </span>and<span class="_ _6"> </span>minimize<span class="_ _8"> </span>the<span class="_ _6"> </span>number<span class="_ _8"> </span>o<span class="_"> </span>f<span class="_ _6"> </span>U<span class="_ _1"></span>A<span class="_ _c"></span>Vs</div><div class="t m1 xc h9 y5d ff2 fs6 fc1 sc0 ls0 ws0">for<span class="_ _8"> </span>maintainin<span class="_ _a"></span>g<span class="_ _8"> </span>wireless<span class="_ _8"> </span>coverage,<span class="_ _d"> </span>r<span class="_ _a"></span>espectively<span class="_ _2"></span>.<span class="_ _d"> </span>[<span class="_ _a"></span>7]<span class="_ _8"> </span>optim<span class="_ _a"></span>ized</div><div class="t m1 xc h9 y5e ff2 fs6 fc1 sc0 ls0 ws0">the<span class="_ _11"> </span>UA<span class="_ _c"></span>Vs&#8217;<span class="_ _11"> </span>&#64258;ying<span class="_ _11"> </span>altitude<span class="_ _11"> </span>to<span class="_ _b"> </span>maximize<span class="_ _11"> </span>the<span class="_ _b"> </span>commun<span class="_ _a"></span>ication</div><div class="t m1 xc h9 y5f ff2 fs6 fc1 sc0 ls0 ws0">throug<span class="_ _a"></span>hput<span class="_ _d"> </span>f<span class="_ _a"></span>or<span class="_ _8"> </span>multiu<span class="_ _a"></span>ser<span class="_ _8"> </span>unicasting<span class="_ _6"> </span>and<span class="_ _8"> </span>multicasting<span class="_ _8"> </span>commu<span class="_ _a"></span>-</div><div class="t m1 xc h9 y60 ff2 fs6 fc1 sc0 ls0 ws0">nications<span class="_ _12"> </span>b<span class="_"> </span>y<span class="_ _10"> </span>considerin<span class="_ _a"></span>g<span class="_ _12"> </span>directional<span class="_ _10"> </span>antennas<span class="_ _12"> </span>at<span class="_ _10"> </span>U<span class="_ _1"></span>A<span class="_ _c"></span>Vs<span class="_ _12"> </span>with</div><div class="t m1 xc h9 y61 ff2 fs6 fc1 sc0 ls0 ws0">adjustable<span class="_ _11"> </span>beamwid<span class="_ _a"></span>th.<span class="_ _11"> </span>Moreover<span class="_ _1"></span>,<span class="_ _10"> </span>[4]<span class="_ _11"> </span>an<span class="_ _a"></span>d<span class="_ _11"> </span>[5]<span class="_ _b"> </span>analyzed<span class="_ _11"> </span>th<span class="_ _a"></span>e</div><div class="t m1 xc h9 y62 ff2 fs6 fc1 sc0 ls0 ws0">av<span class="_ _1"></span>erage<span class="_ _e"> </span>performan<span class="_ _a"></span>ce<span class="_ _f"> </span>of<span class="_ _e"> </span>quasi-stationary<span class="_ _f"> </span>UA<span class="_ _c"></span>V<span class="_ _7"></span>-en<span class="_ _a"></span>abled<span class="_ _f"> </span>wire<span class="_"> </span>less</div><div class="t m1 xc h9 y63 ff2 fs6 fc1 sc0 ls0 ws0">networks<span class="_ _8"> </span>via<span class="_ _8"> </span>the<span class="_ _8"> </span>stochastic<span class="_ _8"> </span>geometry<span class="_ _8"> </span>theory<span class="_ _1"></span>.<span class="_ _d"> </span>For<span class="_ _8"> </span>fully<span class="_ _8"> </span>mobile</div><div class="t m1 xc h9 y64 ff2 fs6 fc1 sc0 ls0 ws0">U<span class="_ _1"></span>A<span class="_ _c"></span>Vs,<span class="_ _10"> </span>existing<span class="_ _10"> </span>w<span class="_ _1"></span>orks<span class="_ _10"> </span>[3,<span class="_ _10"> </span>19,<span class="_ _10"> </span>2<span class="_ _a"></span>2]<span class="_ _10"> </span>proposed<span class="_ _10"> </span>to<span class="_ _10"> </span>dyn<span class="_ _a"></span>amically</div><div class="t m1 xc h9 y65 ff2 fs6 fc1 sc0 ls0 ws0">control<span class="_ _e"> </span>th<span class="_"> </span>e<span class="_ _a"></span>ir<span class="_ _e"> </span>lo<span class="_ _a"></span>cations<span class="_ _e"> </span>over<span class="_ _e"> </span>time,<span class="_ _d"> </span>a.k.a.<span class="_ _d"> </span>trajector<span class="_ _a"></span>ies,<span class="_ _e"> </span>to<span class="_ _d"> </span>impr<span class="_"> </span>ove</div><div class="t m1 xc h9 y66 ff2 fs6 fc1 sc0 ls0 ws0">the<span class="_ _8"> </span>communication<span class="_ _d"> </span>rates<span class="_ _8"> </span>with<span class="_ _d"> </span>different<span class="_ _d"> </span>users<span class="_ _8"> </span>at<span class="_ _d"> </span>d<span class="_"> </span>ifferent<span class="_ _8"> </span>time.</div><div class="t m1 xc h9 y67 ff2 fs6 fc1 sc0 ls0 ws0">For<span class="_ _5"> </span>instance,<span class="_ _5"> </span>[<span class="_ _a"></span>19]<span class="_ _5"> </span>an<span class="_ _a"></span>d<span class="_ _5"> </span>[22]<span class="_ _12"> </span>s<span class="_ _1"></span>tudied<span class="_ _12"> </span>the<span class="_ _5"> </span>U<span class="_ _1"></span>A<span class="_ _c"></span>V<span class="_ _7"></span>-<span class="_ _a"></span>enabled<span class="_ _5"> </span>mobile</div><div class="t m1 xc h9 y68 ff2 fs6 fc1 sc0 ls0 ws0">relaying<span class="_ _f"> </span>ne<span class="_"> </span>twork<span class="_ _a"></span>s,<span class="_ _f"> </span>where<span class="_ _e"> </span>a<span class="_ _f"> </span>U<span class="_ _1"></span>A<span class="_ _c"></span>V<span class="_ _7"></span>-<span class="_ _a"></span>mounted<span class="_ _f"> </span>relay<span class="_ _f"> </span>n<span class="_"> </span>o<span class="_ _a"></span>de<span class="_ _f"> </span>can<span class="_ _e"> </span>adap-</div><div class="t m1 xc h9 y69 ff2 fs6 fc1 sc0 ls0 ws0">ti<span class="_ _1"></span>vely<span class="_ _6"> </span>contr<span class="_ _a"></span>ol<span class="_ _6"> </span>its<span class="_ _6"> </span>trajector<span class="_ _a"></span>y<span class="_ _6"> </span>jointly<span class="_ _6"> </span>with<span class="_ _5"> </span>the<span class="_ _5"> </span>wireless<span class="_ _5"> </span>resource</div><div class="t m1 xc h9 y6a ff2 fs6 fc1 sc0 ls0 ws0">allocation<span class="_ _11"> </span>to<span class="_ _b"> </span>maxim<span class="_"> </span>iz<span class="_"> </span>e<span class="_ _b"> </span>the<span class="_ _11"> </span>en<span class="_"> </span>d<span class="_ _a"></span>-to-end<span class="_ _11"> </span>comm<span class="_ _a"></span>unication<span class="_ _11"> </span>rate</div><a class="l" rel='nofollow' onclick='return false;'><div class="d m2"></div></a></div><div class="pi" data-data='{"ctm":[1.568627,0.000000,0.000000,1.568627,0.000000,0.000000]}'></div></div> </body> </html>
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