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</o:shapelayout></xml><![endif]--></head><body lang=SL link=blue vlink=purple><div class=WordSection1><p class=MsoNormal align=center style='text-align:center'>Vabimo vas na 14. predavanje iz sklopa "Kolokviji na IJS" v letu 2012/13, ki bo <strong><span style='color:red'>v četrtek, 28. marca 2013, ob 13. uri </span></strong><span style='color:red'>v Veliki predavalnici Instituta »Jožef Stefan«</span> na Jamovi cesti 39 v Ljubljani. Napovednik predavanja najdete tudi na naslovu <a href="http://www.ijs.si/ijsw/Koledar_prireditev">http://www.ijs.si/ijsw/Koledar_prireditev</a>, posnetke preteklih predavanj<span style='color:blue'> </span>pa na <a href="http://videolectures.net/kolokviji_ijs">http://videolectures.net/kolokviji_ijs</a>.<o:p></o:p></p><p class=MsoNormal align=center style='margin-bottom:12.0pt;text-align:center'>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<o:p></o:p></p><p class=MsoNormal align=center style='text-align:center'><b>prof. dr. Luiz A. DaSilva<o:p></o:p></b></p><p class=MsoNormal align=center style='text-align:center'><i>Trinity College Dublin, Irska<o:p></o:p></i></p><p class=MsoNormal align=center style='mso-margin-top-alt:auto;text-align:center'><b><span style='font-size:14.0pt;mso-fareast-language:SL'><o:p> </o:p></span></b></p><p class=MsoNormal align=center style='text-align:center'><b><span style='font-size:14.0pt'>Sestavljanje virtualnih brezžičnih omrežij s souporabo virov<o:p></o:p></span></b></p><p class=MsoNormal align=center style='text-align:center'><span style='font-size:11.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal align=center style='text-align:center'>Pritiski uporabnikov na operaterje mobilnih omrežij za podporo vse višjih hitrosti prenosa podatkov ob skoraj nespremenjenih cenah bo zahtevalo obsežno in dinamično souporabo virov med operaterji kot tudi izkoriščanje obstoječe ali novo zgrajene infrastrukture lokalnih brezžičnih omrežij. Pred kratkim smo predlagali koncept ‘omrežij brez meja’, ki omogočajo dinamično vzpostavitev virtualnih brezžičnih omrežij iz nabora virov, ki zajemajo radijski spekter, omrežno infrastrukturo ter funkcionalnosti upravljanja in nadzora omrežij. V predavanju bomo predstavili preliminarne modele souporabe infrastrukture in radijskega spektra ter njihov vpliv na zagotavljanje pokritosti in skupne kapacitete sistema. Pri modeliranju uporabe prenosnih virov in pri načrtovanju dostopa mobilnih operaterjev do licenčnega radijskega spektra drugega operaterja si pomagamo s teorijo iger. Za ovrednotenje infrastrukturnih zahtev za doseganje želenega pokritja uporabimo podatke evropskih mobilnih operaterjev, pri čemer obstoječe bazne postaje obravnavamo kot nabor virov, iz katerih sestavimo virtualna omrežja.<i><o:p></o:p></i></p><p class=MsoNormal align=center style='mso-margin-top-alt:auto;margin-bottom:12.0pt;text-align:center'>Predavanje bo v angleščini.<span style='mso-fareast-language:SL'><o:p></o:p></span></p><p class=MsoNormal align=center style='mso-margin-top-alt:auto;margin-bottom:12.0pt;text-align:center'><strong><span style='font-family:"Calibri","sans-serif";color:red'>Lepo vabljeni!</span></strong><b><span lang=EN-US style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></b></p><p class=MsoNormal align=center style='text-align:center'><b><span lang=EN-US style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></b></p><p class=MsoNormal align=center style='text-align:center'><b><span lang=EN-US style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:black'>*****</span></b><span style='font-size:14.0pt;font-family:"Calibri","sans-serif"'><o:p></o:p></span></p><p class=MsoNormal align=center style='text-align:center'><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal align=center style='text-align:center'><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal align=center style='text-align:center'><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal align=center style='text-align:center'><span style='color:black'>We invite you to the 14th Institute colloquium in the academic year 2012/13. The colloquium will be held <b>on Thursday March 28, 2013 at 1 PM</b> in <b>the main Institute</b></span><b><span style='color:#1F497D'> </span><span style='color:black'>lecture hall</span></b><span style='color:black'>, Jamova 39, Ljubljana. To read the abstract click </span><a href="http://www.ijs.si/ijsw/Koledar_prireditev">http://www.ijs.si/ijsw/Koledar_prireditev</a><span style='color:#1F497D'>. </span><span style='color:black'>Past colloquia are posted on</span><span style='color:#1F497D'> </span><a href="http://videolectures.net/kolokviji_ijs">http://videolectures.net/kolokviji_ijs</a><span style='color:#1F497D'>.<o:p></o:p></span></p><p class=MsoNormal align=center style='text-align:center'><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal align=center style='margin-bottom:12.0pt;text-align:center'>********************************************<b><o:p></o:p></b></p><p class=MsoNormal align=center style='text-align:center'><b>prof. dr. Luiz A. DaSilva</b><b><span lang=EN-US><o:p></o:p></span></b></p><p class=MsoNormal align=center style='text-align:center'><i>Trinity College Dublin, Ireland<o:p></o:p></i></p><p class=MsoNormal align=center style='text-align:center'><b><span style='font-size:16.0pt'><o:p> </o:p></span></b></p><p class=MsoNormal align=center style='text-align:center'><b><span style='font-size:16.0pt'>Orchestrating Virtual Wireless Networks from Shared Resource Pools</span></b><b><span style='font-size:16.0pt;mso-fareast-language:SL'><o:p></o:p></span></b></p><p class=MsoNormal align=center style='text-align:center'><o:p> </o:p></p><p class=MsoNormal align=center style='text-align:center'>Pressures on mobile network operators to support ever increasing data rates, while keeping costs fairly flat, will require large scale and dynamic sharing of resources among operators, as well as harnessing of spontaneously deployed local area wireless infrastructure. We have recently proposed the concept of Networks without Borders, which allow for the dynamic establishment of virtual networks from a pool of wireless resources, encompassing spectrum, infrastructure, and management and control functionality. In this talk, we will present our initial models for the sharing of infrastructure and spectrum and its impact on coverage and aggregate capacity. We employ game theory to model the use of carrier aggregation and the ability of mobile network operators to schedule access to each other’s licensed spectrum. On the infrastructure side, we have started to use mobile operator data from Europe to quantify the infrastructure requirements to achieve a given coverage target, treating current base station deployment as a pool of resources from which a virtual network can be architected.<o:p></o:p></p><p class=MsoNormal align=center style='text-align:center'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p></div></body></html>