{"id":4006,"date":"2026-03-18T11:32:56","date_gmt":"2026-03-18T11:32:56","guid":{"rendered":"https:\/\/blog.lebara.co.uk\/?p=4006"},"modified":"2026-04-08T11:37:02","modified_gmt":"2026-04-08T10:37:02","slug":"how-roaming-works-technically-in-mobile-networks","status":"publish","type":"post","link":"https:\/\/blog.lebara.co.uk\/sk\/how-roaming-works-technically-in-mobile-networks\/","title":{"rendered":"Ako technicky funguje roaming v mobiln\u00fdch sie\u0165ach"},"content":{"rendered":"<p>Ke\u010f sa v\u00e1\u0161 mobiln\u00fd telef\u00f3n pripoj\u00ed k zahrani\u010dn\u00e9mu <a href=\"https:\/\/blog.lebara.co.uk\/sk\/how-to-find-out-what-network-youre-on\/\">sie\u0165<\/a> v inej krajine sa v z\u00e1kulis\u00ed spust\u00ed zlo\u017eit\u00fd re\u0165azec technick\u00fdch procesov. Tento \u010dl\u00e1nok vysvet\u013euje, ako roaming technicky funguje v mobiln\u00fdch sie\u0165ach, a zah\u0155\u0148a signaliza\u010dn\u00e9, autentifika\u010dn\u00e9, smerovacie a faktura\u010dn\u00e9 mechanizmy, ktor\u00e9 umo\u017e\u0148uj\u00fa <a href=\"https:\/\/blog.lebara.co.uk\/sk\/how-to-cut-the-cost-of-international-calls-on-a-mobile-phone\/\">medzin\u00e1rodn\u00e9<\/a> mo\u017enos\u0165 pripojenia.<\/p>\n\n\n\n<p>Roaming umo\u017e\u0148uje, aby va\u0161a karta SIM pou\u017e\u00edvala va\u0161e telef\u00f3nne \u010d\u00edslo aj po\u010das pripojenia k nav\u0161t\u00edvenej sieti kdeko\u013evek na svete. Predstavte si, \u017ee by ste v roku 2026 prist\u00e1li v \u0160panielsku ako predplatite\u013e britsk\u00e9ho Vodafonu - va\u0161e mobiln\u00e9 zariadenie automaticky rozpozn\u00e1 Orange Espa\u00f1a, over\u00ed sa prostredn\u00edctvom v\u00e1\u0161ho dom\u00e1ceho oper\u00e1tora a umo\u017en\u00ed v\u00e1m kontrolova\u0165 e-maily, uskuto\u010d\u0148ova\u0165 hlasov\u00e9 hovory a pou\u017e\u00edva\u0165 <a href=\"https:\/\/blog.lebara.co.uk\/sk\/%ef%bf%bchow-much-data-is-optimal\/\">mobiln\u00e9 \u00fadaje<\/a> bez v\u00fdmeny <a href=\"https:\/\/blog.lebara.co.uk\/sk\/a-beginners-guide-to-sim-cards\/\">Karty SIM<\/a>.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_83 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Obsah<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Prep\u00ednanie tabu\u013eky obsahu\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Prep\u00edna\u010d<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/blog.lebara.co.uk\/sk\/how-roaming-works-technically-in-mobile-networks\/#Core_Concepts_Home_Network_Visited_Network_and_Roaming_Agreements\" >Z\u00e1kladn\u00e9 pojmy: Dom\u00e1ca sie\u0165, nav\u0161t\u00edven\u00e1 sie\u0165 a dohody o roamingu<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/blog.lebara.co.uk\/sk\/how-roaming-works-technically-in-mobile-networks\/#Device_and_Radio_Layer_How_Your_Phone_Finds_and_Joins_a_Visited_Network\" >Zariadenie a r\u00e1diov\u00e1 vrstva: Ako telef\u00f3n vyh\u013ead\u00e1 nav\u0161t\u00edven\u00fa sie\u0165 a pripoj\u00ed sa k nej<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/blog.lebara.co.uk\/sk\/how-roaming-works-technically-in-mobile-networks\/#Subscriber_Authentication_and_Security_How_the_Networks_Verify_You\" >Autentifik\u00e1cia a zabezpe\u010denie \u00fa\u010dastn\u00edka: Ako v\u00e1s siete overuj\u00fa<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/blog.lebara.co.uk\/sk\/how-roaming-works-technically-in-mobile-networks\/#Mobility_Management_and_Location_Updates\" >Spr\u00e1va mobility a aktualiz\u00e1cie polohy<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/blog.lebara.co.uk\/sk\/how-roaming-works-technically-in-mobile-networks\/#Call_and_SMS_Routing_While_Roaming\" >Smerovanie hovorov a SMS po\u010das roamingu<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/blog.lebara.co.uk\/sk\/how-roaming-works-technically-in-mobile-networks\/#Data_Roaming_PDP_Contexts_APNs_and_Tunnels\" >D\u00e1tov\u00fd roaming: Kontexty PDP, APN a tunely<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/blog.lebara.co.uk\/sk\/how-roaming-works-technically-in-mobile-networks\/#Inter-Standard_Roaming_and_Legacy_Technologies\" >Medzistandardn\u00fd roaming a star\u0161ie technol\u00f3gie<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/blog.lebara.co.uk\/sk\/how-roaming-works-technically-in-mobile-networks\/#Roaming_Billing_Charging_Records_and_Settlement\" >Vy\u00fa\u010dtovanie roamingu, z\u00e1znamy o \u00fa\u010dtovan\u00ed a vyrovnanie<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/blog.lebara.co.uk\/sk\/how-roaming-works-technically-in-mobile-networks\/#Regulation_Policy_Control_and_Roaming_Restrictions\" >Regul\u00e1cia, kontrola polit\u00edk a obmedzenia roamingu<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/blog.lebara.co.uk\/sk\/how-roaming-works-technically-in-mobile-networks\/#eSIM_Multi-IMSI_and_the_Future_of_Roaming\" >eSIM, Multi-IMSI a bud\u00facnos\u0165 roamingu<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/blog.lebara.co.uk\/sk\/how-roaming-works-technically-in-mobile-networks\/#Summary_Putting_the_Technical_Pieces_Together\" >Zhrnutie: Zlo\u017eenie technick\u00fdch \u010dast\u00ed dokopy<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Core_Concepts_Home_Network_Visited_Network_and_Roaming_Agreements\"><\/span>Z\u00e1kladn\u00e9 pojmy: Dom\u00e1ca sie\u0165, nav\u0161t\u00edven\u00e1 sie\u0165 a dohody o roamingu<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Va\u0161a dom\u00e1ca PLMN (Public Land Mobile Network) je sie\u0165ov\u00fd oper\u00e1tor, ktor\u00e9ho ste si p\u00f4vodne predplatili - napr\u00edklad Vodafone UK. Ke\u010f cestujete <a href=\"https:\/\/blog.lebara.co.uk\/sk\/using-data-abroad-what-you-need-to-know\/\">v zahrani\u010d\u00ed<\/a>, miestna sie\u0165, ku ktorej sa pripoj\u00edte, sa stane nav\u0161t\u00edvenou PLMN, napr\u00edklad Orange Espa\u00f1a.<\/p>\n\n\n\n<p>Medzin\u00e1rodn\u00fd roaming funguje len vtedy, ke\u010f oper\u00e1tori podp\u00ed\u0161u roamingov\u00e9 dohody, v ktor\u00fdch s\u00fa uveden\u00e9 technick\u00e9 podrobnosti o prepojen\u00ed a ve\u013ekoobchodn\u00e9 tarify. Tieto dohody sa opieraj\u00fa o glob\u00e1lne r\u00e1mce, ktor\u00e9 udr\u017eiavaj\u00fa org\u00e1ny ako GSMA, ktor\u00e9 \u0161tandardizuj\u00fa procesy vr\u00e1tane s\u00faborov TAP (Transferred Account Procedure) na v\u00fdmenu fakt\u00far.<\/p>\n\n\n\n<p>Tu je zn\u00e1zornen\u00fd vz\u0165ah medzi k\u013e\u00fa\u010dov\u00fdmi subjektmi:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Dom\u00e1ca sie\u0165: vlastn\u00ed va\u0161e predplatn\u00e9, udr\u017eiava v\u00e1\u0161 hlavn\u00fd profil v datab\u00e1zach (HLR\/HSS\/UDM).<\/li>\n\n\n\n<li>Nav\u0161t\u00edven\u00e1 sie\u0165: poskytuje miestnu r\u00e1diov\u00fa infra\u0161trukt\u00faru a do\u010dasne host\u00ed va\u0161e pripojenie<\/li>\n\n\n\n<li>Roamingov\u00fd partner: ak\u00fdko\u013evek zahrani\u010dn\u00fd oper\u00e1tor s podp\u00edsanou zmluvou, ktor\u00e1 umo\u017e\u0148uje pripojenie \u00fa\u010dastn\u00edkov v\u00e1\u0161ho dom\u00e1ceho oper\u00e1tora.<\/li>\n<\/ul>\n\n\n\n<p>V\u00e1\u0161 \u00fa\u010dastn\u00edcky profil - vr\u00e1tane opr\u00e1vnen\u00ed na slu\u017eby, roamingov\u00fdch povolen\u00ed a stavu kreditu - zostane natrvalo v datab\u00e1ze dom\u00e1cej siete. V nav\u0161t\u00edvenej sieti sa uchov\u00e1vaj\u00fa len do\u010dasn\u00e9 z\u00e1znamy po\u010das v\u00e1\u0161ho pripojenia.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Device_and_Radio_Layer_How_Your_Phone_Finds_and_Joins_a_Visited_Network\"><\/span>Zariadenie a r\u00e1diov\u00e1 vrstva: Ako telef\u00f3n vyh\u013ead\u00e1 nav\u0161t\u00edven\u00fa sie\u0165 a pripoj\u00ed sa k nej<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Ke\u010f zapnete mobiln\u00fd telef\u00f3n v zahrani\u010d\u00ed, vyh\u013ead\u00e1 dostupn\u00fdch oper\u00e1torov \u010d\u00edtan\u00edm vysielac\u00edch sign\u00e1lov. Zariadenie kontroluje identifik\u00e1tory PLMN pod\u013ea zoznamu preferovan\u00e9ho roamingu ulo\u017een\u00e9ho na karte SIM, aby identifikovalo povolen\u00e9 siete.<\/p>\n\n\n\n<p>Karta SIM\/USIM obsahuje d\u00f4le\u017eit\u00e9 \u00fadaje, ktor\u00e9 ur\u010duj\u00fa v\u00fdber siete:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>IMSI (International Mobile Subscriber Identity) na jedine\u010dn\u00fa identifik\u00e1ciu<\/li>\n\n\n\n<li>Zoznamy uprednost\u0148ovan\u00e9ho roamingu, ktor\u00e9 ur\u010duj\u00fa povolen\u00fdch nav\u0161t\u00edven\u00fdch oper\u00e1torov<\/li>\n\n\n\n<li>Bezpe\u010dnostn\u00e9 k\u013e\u00fa\u010de (Ki, K) na overovanie<\/li>\n<\/ul>\n\n\n\n<p>Telef\u00f3n vykon\u00e1 v\u00fdber bunky v podporovan\u00fdch frekven\u010dn\u00fdch p\u00e1smach - v Eur\u00f3pe s\u00fa to zvy\u010dajne p\u00e1sma 800 MHz, 1800 MHz a 2600 MHz - a na\u010d\u00edta syst\u00e9mov\u00e9 inform\u00e1cie, aby potvrdil, \u017ee je roaming povolen\u00fd. V\u00e4\u010d\u0161ina zariaden\u00ed dnes podporuje viacero technol\u00f3gi\u00ed: GSM\/EDGE, UMTS, LTE a <a href=\"https:\/\/blog.lebara.co.uk\/sk\/which-iphones-support-5g\/\">5G<\/a> NR, \u010do umo\u017e\u0148uje glob\u00e1lne pripojenie.<\/p>\n\n\n\n<p>Schody z prist\u00e1tia na spojovacie:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Telef\u00f3n preh\u013ead\u00e1va dostupn\u00e9 siete a \u010d\u00edta identifik\u00e1tory PLMN<\/li>\n\n\n\n<li>Zariadenie porovn\u00e1va zisten\u00e9 siete so zoznamom roamingu karty SIM<\/li>\n\n\n\n<li>Telef\u00f3n vyberie povolen\u00fa sie\u0165 s najvy\u0161\u0161ou prioritou<\/li>\n\n\n\n<li>Zariadenie odo\u0161le \u017eiados\u0165 o registr\u00e1ciu do nav\u0161t\u00edvenej siete<\/li>\n\n\n\n<li>Nav\u0161t\u00edven\u00e1 sie\u0165 sa p\u00fdta dom\u00e1cej siete na overenie<\/li>\n<\/ul>\n\n\n\n<p>Ak medzi va\u0161\u00edm dom\u00e1cim oper\u00e1torom a miestnou sie\u0165ou neexistuje \u017eiadna roamingov\u00e1 dohoda, zariadenie zobraz\u00ed \u201cNo Service\u201d napriek r\u00e1diov\u00fdm <a href=\"https:\/\/blog.lebara.co.uk\/sk\/boosting-your-mobile-signal-tips-for-improving-reception\/\">sign\u00e1l<\/a> pr\u00edtomnos\u0165.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Subscriber_Authentication_and_Security_How_the_Networks_Verify_You\"><\/span>Autentifik\u00e1cia a zabezpe\u010denie \u00fa\u010dastn\u00edka: Ako v\u00e1s siete overuj\u00fa<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Po pripojen\u00ed k nav\u0161t\u00edvenej bunke nav\u0161t\u00edven\u00e1 sie\u0165 identifikuje va\u0161u SIM kartu a mus\u00ed potvrdi\u0165 dom\u00e1cemu oper\u00e1torovi, \u017ee je prav\u00e1 a m\u00e1 povolenie na roaming. T\u00fdm sa zabr\u00e1ni podvodn\u00e9mu pou\u017e\u00edvaniu a zabezpe\u010d\u00ed sa spr\u00e1vne \u00fa\u010dtovanie.<\/p>\n\n\n\n<p>Proces overovania prebieha pod\u013ea protokolu AKA (Authentication and Key Agreement):<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Nav\u0161t\u00edven\u00e1 sie\u0165 z\u00edska v\u00e1\u0161 IMSI a odo\u0161le ho do dom\u00e1cej siete.<\/li>\n\n\n\n<li>Domov HLR\/HSS generuje autentifika\u010dn\u00e9 vektory obsahuj\u00face n\u00e1hodn\u00e9 v\u00fdzvy<\/li>\n\n\n\n<li>V\u00fdzva sa odo\u0161le do v\u00e1\u0161ho zariadenia, ktor\u00e9 vypo\u010d\u00edta odpove\u010f pomocou tajn\u00e9ho k\u013e\u00fa\u010da ulo\u017een\u00e9ho len na karte SIM.<\/li>\n\n\n\n<li>Ak sa odpove\u010f zhoduje s o\u010dak\u00e1vaniami dom\u00e1cej siete, overenie prebehne \u00faspe\u0161ne.<\/li>\n<\/ol>\n\n\n\n<p>\u00dadaje vymie\u0148an\u00e9 po\u010das overovania:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>IMSI (identita \u00fa\u010dastn\u00edka)<\/li>\n\n\n\n<li>Autentifika\u010dn\u00e9 vektory z dom\u00e1ceho centra AuC (Authentication Center)<\/li>\n\n\n\n<li>Hodnoty odpovede na v\u00fdzvu<\/li>\n\n\n\n<li>Stav povolenia na roaming a pr\u00edpadn\u00e9 podmienky z\u00e1kazu<\/li>\n\n\n\n<li>\u0161ifrovacie k\u013e\u00fa\u010de a k\u013e\u00fa\u010de integrity na \u0161ifrovanie prev\u00e1dzky<\/li>\n<\/ul>\n\n\n\n<p>Tajn\u00fd k\u013e\u00fa\u010d nikdy neopust\u00ed SIM kartu ani dom\u00e1cu sie\u0165, \u010do zaru\u010duje bezpe\u010dnos\u0165 aj v pr\u00edpade naru\u0161enia nav\u0161t\u00edvenej sie\u0165ovej infra\u0161trukt\u00fary. Tieto odvoden\u00e9 k\u013e\u00fa\u010de \u0161ifruj\u00fa pou\u017e\u00edvate\u013esk\u00fa prev\u00e1dzku a signaliz\u00e1ciu medzi telef\u00f3nom a nav\u0161t\u00edvenou z\u00e1klad\u0148ovou stanicou.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Mobility_Management_and_Location_Updates\"><\/span>Spr\u00e1va mobility a aktualiz\u00e1cie polohy<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Mobiln\u00e9 siete musia v\u017edy vedie\u0165, kde sa pribli\u017ene nach\u00e1dzate, aby mohli doru\u010dova\u0165 hovory, SMS spr\u00e1vy a d\u00e1tov\u00e9 rel\u00e1cie po\u010das roamingu. Bez tohto sledovania by prich\u00e1dzaj\u00faca komunik\u00e1cia nemala cie\u013e.<\/p>\n\n\n\n<p>Siete organizuj\u00fa pokrytie do hierarchick\u00fdch z\u00f3n: V paketov\u00fdch sie\u0165ach 3G sa pokrytie del\u00ed na oblasti lokaliz\u00e1cie (LA) v 2G, oblasti smerovania (RA) v 3G a oblasti sledovania (TA) v LTE\/5G. Ke\u010f sa pres\u00favate z par\u00ed\u017eskeho letiska CDG do centra mesta, prekro\u010denie hran\u00edc z\u00f3n spust\u00ed aktualiz\u00e1ciu polohy.<\/p>\n\n\n\n<p>Proces aktualiz\u00e1cie polohy:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Va\u0161e zariadenie zist\u00ed vstup do novej oblasti sledovania<\/li>\n\n\n\n<li>Telef\u00f3n odo\u0161le \u017eiados\u0165 o aktualiz\u00e1ciu polohy nav\u0161t\u00edven\u00e9mu jadru siete<\/li>\n\n\n\n<li>Nav\u0161t\u00edven\u00e1 sie\u0165 aktualizuje svoje miestne z\u00e1znamy (VLR\/MME\/AMF)<\/li>\n\n\n\n<li>Nav\u0161t\u00edven\u00e1 sie\u0165 signalizuje domovsk\u00e9mu HLR\/HSS nov\u00fa polohu obsluhuj\u00faceho uzla<\/li>\n\n\n\n<li>Dom\u00e1ca sie\u0165 potvrdzuje a zaznamen\u00e1va va\u0161u aktu\u00e1lnu polohu<\/li>\n<\/ul>\n\n\n\n<p>Ke\u010f niekto zavol\u00e1 na va\u0161e \u010d\u00edslo alebo po\u0161le spr\u00e1vu, sie\u0165 zobraz\u00ed va\u0161e zariadenie v poslednej zn\u00e1mej oblasti sledovania. V\u00e1\u0161 telef\u00f3n odpovie a spojenie sa nadvia\u017ee.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Call_and_SMS_Routing_While_Roaming\"><\/span>Smerovanie hovorov a SMS po\u010das roamingu<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Logika smerovania sa v\u00fdrazne l\u00ed\u0161i medzi odch\u00e1dzaj\u00facou a prich\u00e1dzaj\u00facou komunik\u00e1ciou. Hovory a SMS-MO prich\u00e1dzaj\u00face z mobiln\u00fdch siet\u00ed sa l\u00ed\u0161ia od hovorov a SMS-MT ukon\u010den\u00fdch z mobiln\u00fdch siet\u00ed.<\/p>\n\n\n\n<p>V pr\u00edpade mobiln\u00fdch hovorov v roamingu vyto\u010d\u00edte \u010d\u00edslo E.164 (napr\u00edklad +44 20...). Br\u00e1na MSC alebo IMS nav\u0161t\u00edvenej siete analyzuje \u010d\u00edslice a presmeruje hovor bu\u010f lok\u00e1lne v r\u00e1mci nav\u0161t\u00edvenej krajiny, alebo medzin\u00e1rodne do cie\u013eov\u00e9ho miesta.<\/p>\n\n\n\n<p>V pr\u00edpade prij\u00edmania hovorov v zahrani\u010d\u00ed je proces zlo\u017eitej\u0161\u00ed:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Volaj\u00faci vyto\u010d\u00ed va\u0161e MSISDN (p\u00f4vodn\u00e9 telef\u00f3nne \u010d\u00edslo)<\/li>\n\n\n\n<li>Hovor dosiahne br\u00e1nu va\u0161ej dom\u00e1cej siete MSC<\/li>\n\n\n\n<li>Dom\u00e1ca sie\u0165 sa p\u00fdta HLR na va\u0161u aktu\u00e1lnu roamingov\u00fa polohu<\/li>\n\n\n\n<li>HLR vr\u00e1ti do\u010dasn\u00e9 MSRN (Mobile Station Roaming Number)<\/li>\n\n\n\n<li>Hovor je presmerovan\u00fd do nav\u0161t\u00edven\u00e9ho MSC, kde ste zaregistrovan\u00fd<\/li>\n\n\n\n<li>Nav\u0161t\u00edven\u00e1 sie\u0165 zobraz\u00ed str\u00e1nky v\u00e1\u0161ho zariadenia a uskuto\u010dn\u00ed hovor<\/li>\n<\/ul>\n\n\n\n<p>Modern\u00e9 VoLTE a VoNR \u010dasto ukotvuj\u00fa hlasov\u00e9 hovory v dom\u00e1com jadre IMS, aj ke\u010f r\u00e1diov\u00fd pr\u00edstup prebieha cez nav\u0161t\u00edven\u00fa sie\u0165, \u010d\u00edm sa zlep\u0161uje kvalita a zjednodu\u0161uje smerovanie.<\/p>\n\n\n\n<p>V pr\u00edpade SMS funguje SMSC dom\u00e1cej siete v\u017edy ako kotviaci bod. Signaliza\u010dn\u00e9 spr\u00e1vy pr\u00fadia medzi dom\u00e1cou a nav\u0161t\u00edvenou sie\u0165ou pomocou protokolov MAP cez SS7 alebo Diameter, aby sa spr\u00e1vy doru\u010dili bez oh\u013eadu na va\u0161u polohu.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Data_Roaming_PDP_Contexts_APNs_and_Tunnels\"><\/span>D\u00e1tov\u00fd roaming: Kontexty PDP, APN a tunely<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><a href=\"https:\/\/blog.lebara.co.uk\/sk\/a-guide-to-data-roaming\/\">D\u00e1tov\u00fd roaming<\/a> zvy\u0161uje zlo\u017eitos\u0165, preto\u017ee <a href=\"https:\/\/blog.lebara.co.uk\/sk\/ip-ratings-explained-how-your-smartphone-can-withstand-water-and-dust\/\">IP<\/a> rel\u00e1cie musia by\u0165 niekde ukotven\u00e9, zatia\u013e \u010do r\u00e1diov\u00fd pr\u00edstup je vzdialen\u00fd. Va\u0161e zariadenie alebo karta SIM obsahuje nastavenia APN (Access Point Name), ktor\u00e9 ur\u010duj\u00fa sp\u00f4sob smerovania d\u00e1tovej prev\u00e1dzky.<\/p>\n\n\n\n<p>Nav\u0161t\u00edven\u00e1 sie\u0165 pou\u017e\u00edva APN na rozhodnutie, \u010di:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Dom\u00e1ce presmerovanie prev\u00e1dzky sp\u00e4\u0165 do v\u00e1\u0161ho dom\u00e1ceho PGW\/UPF (naj\u010dastej\u0161ie)<\/li>\n\n\n\n<li>Poskytn\u00fa\u0165 miestne rozdelenie, ak \u00fadaje vych\u00e1dzaj\u00fa lok\u00e1lne (pou\u017e\u00edva sa v niektor\u00fdch scen\u00e1roch E\u00da).<\/li>\n<\/ul>\n\n\n\n<p>V sie\u0165ach 2G\/3G aktiv\u00e1cia d\u00e1t zah\u0155\u0148ala vytvorenie kontextu PDP (Packet Data Protocol). V 4G\/5G sa to vyvinulo na \u0161tandardn\u00fd nosi\u010d alebo vytvorenie rel\u00e1cie PDU s koordin\u00e1ciou nav\u0161t\u00edvenej siete s dom\u00e1cou infra\u0161trukt\u00farou.<\/p>\n\n\n\n<p>Tunelov\u00e1 trasa pre roamingov\u00e9 \u00fadaje:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Telef\u00f3n pren\u00e1\u0161a pakety prostredn\u00edctvom r\u00e1diov\u00e9ho pr\u00edstupu nav\u0161t\u00edvenej siete<\/li>\n\n\n\n<li>Pakety sa dostan\u00fa do jadra nav\u0161t\u00edvenej siete (SGSN\/MME\/AMF)<\/li>\n\n\n\n<li>Doprava je zapuzdren\u00e1 v tuneloch GTP<\/li>\n\n\n\n<li>Tunely prech\u00e1dzaj\u00fa cez medzin\u00e1rodn\u00e9 siete GRX alebo IPX<\/li>\n\n\n\n<li>V\u00fdstup paketov na dom\u00e1cej d\u00e1tovej br\u00e1ne (GGSN\/PGW\/UPF)<\/li>\n\n\n\n<li>Br\u00e1na preposiela do internetu; sp\u00e4tn\u00e1 prev\u00e1dzka sa uskuto\u010d\u0148uje opa\u010dnou cestou<\/li>\n<\/ul>\n\n\n\n<p>Z poh\u013eadu internetu sa \u010dasto zd\u00e1, \u017ee sa nach\u00e1dzate v priestore IP svojej domovskej krajiny, \u010do ovplyv\u0148uje geoloka\u010dn\u00e9 slu\u017eby.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Inter-Standard_Roaming_and_Legacy_Technologies\"><\/span>Medzistandardn\u00fd roaming a star\u0161ie technol\u00f3gie<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>V minulosti sa v mobiln\u00fdch sie\u0165ach pou\u017e\u00edvali r\u00f4zne technol\u00f3gie - v Eur\u00f3pe dominovalo GSM, zatia\u013e \u010do v Severnej Amerike CDMA. Medzi\u0161tandardn\u00fd roaming si vy\u017eadoval viacre\u017eimov\u00e9 telef\u00f3ny a \u0161pecializovan\u00e9 roamingov\u00e9 uzly na prepojenie t\u00fdchto syst\u00e9mov.<\/p>\n\n\n\n<p>V s\u00fa\u010dasnosti sa priemysel konsolidoval okolo \u0161tandardov 3GPP (GSM\/UMTS\/LTE\/5G NR), \u010do v\u00fdrazne zjednodu\u0161ilo kompatibilitu. Prebiehaj\u00face vyp\u00ednanie siet\u00ed 2G\/3G v rokoch 2025-2030 znamen\u00e1, \u017ee na mnoh\u00fdch trhoch je pre hlasov\u00e9 slu\u017eby povinn\u00e1 schopnos\u0165 VoLTE.<\/p>\n\n\n\n<p>\u010co mus\u00ed zariadenie podporova\u0165 pre glob\u00e1lny roaming v roku 2026:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>P\u00e1sma LTE vo viacer\u00fdch regi\u00f3noch (p\u00e1smo 1, 4, 7 at\u010f.)<\/li>\n\n\n\n<li>P\u00e1sma 5G NR (n78, n79, n1)<\/li>\n\n\n\n<li>Mo\u017enos\u0165 VoLTE na hlasov\u00e9 hovory<\/li>\n\n\n\n<li><a href=\"https:\/\/blog.lebara.co.uk\/sk\/%ef%bf%bca-guide-to-sim-card-sizes\/\">eSIM<\/a> podpora flexibiln\u00e9ho prep\u00ednania profilov<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Roaming_Billing_Charging_Records_and_Settlement\"><\/span>Vy\u00fa\u010dtovanie roamingu, z\u00e1znamy o \u00fa\u010dtovan\u00ed a vyrovnanie<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Nav\u0161t\u00edven\u00fd oper\u00e1tor poskytuje slu\u017eby, ale \u00fa\u010dtuje ich v\u00e1\u0161mu dom\u00e1cemu oper\u00e1torovi, ktor\u00fd v\u00e1m potom vystav\u00ed fakt\u00faru. Tento proces sa opiera o podrobn\u00e9 z\u00e1znamy o pou\u017e\u00edvan\u00ed.<\/p>\n\n\n\n<p>Siete generuj\u00fa z\u00e1znamy o nab\u00edjan\u00ed, ktor\u00e9 obsahuj\u00fa:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>IMSI a MSISDN (identifik\u00e1tory \u00fa\u010dastn\u00edka)<\/li>\n\n\n\n<li>Typ slu\u017eby, cie\u013e, \u010dasov\u00e1 zna\u010dka, trvanie\/objem<\/li>\n\n\n\n<li>Identifik\u00e1tor nav\u0161t\u00edvenej PLMN a ID bunky<\/li>\n\n\n\n<li>Uplatnite\u013en\u00e9 ve\u013ekoobchodn\u00e9 sadzby<\/li>\n<\/ul>\n\n\n\n<p>S\u00fabory TAP tieto z\u00e1znamy zhroma\u017e\u010fuj\u00fa a s\u00fa pravidelne - zvy\u010dajne denne - zasielan\u00e9 od nav\u0161t\u00edven\u00fdch prev\u00e1dzkovate\u013eov domovsk\u00fdm prev\u00e1dzkovate\u013eom. \u00da\u010dtovn\u00fd syst\u00e9m dom\u00e1cej siete potom uplat\u0148uje va\u0161e \u0161pecifick\u00e9 ceny, \u010di u\u017e ide o roamingov\u00fd pl\u00e1n so zahrnut\u00fdmi d\u00e1tami, alebo o roamingov\u00e9 poplatky pod\u013ea potreby.<\/p>\n\n\n\n<p>\u017divotn\u00fd cyklus udalosti roamingu:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pou\u017e\u00edvate slu\u017ebu (volanie, SMS, d\u00e1ta)<\/li>\n\n\n\n<li>Nav\u0161t\u00edven\u00e1 sie\u0165 generuje z\u00e1znam CDR\/u\u017e\u00edvania<\/li>\n\n\n\n<li>Z\u00e1znamy s\u00fa zostaven\u00e9 do s\u00faborov TAP<\/li>\n\n\n\n<li>S\u00fabory TAP odoslan\u00e9 domovsk\u00e9mu prev\u00e1dzkovate\u013eovi<\/li>\n\n\n\n<li>Syst\u00e9m dom\u00e1cej faktur\u00e1cie uplat\u0148uje ceny a prid\u00e1va ich do fakt\u00fary<\/li>\n<\/ul>\n\n\n\n<p>Regula\u010dn\u00e9 r\u00e1mce v\u00fdznamne ovplyv\u0148uj\u00fa roamingov\u00e9 poplatky. Nariadenie E\u00da \u201cRoam Like at Home\u201d, platn\u00e9 od j\u00fana 2017 a pred\u013a\u017een\u00e9 do roku 2032, odstra\u0148uje pr\u00edplatky v r\u00e1mci E\u00da a umo\u017e\u0148uje mobiln\u00fdm pou\u017e\u00edvate\u013eom plati\u0165 dom\u00e1ce sadzby.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Regulation_Policy_Control_and_Roaming_Restrictions\"><\/span>Regul\u00e1cia, kontrola polit\u00edk a obmedzenia roamingu<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Okrem technol\u00f3gie je roaming ovplyv\u0148ovan\u00fd regula\u010dnou politikou a politikou oper\u00e1torov. Prvky PCRF\/PCF (Policy and Charging Rules Function) presadzuj\u00fa kontroly vr\u00e1tane d\u00e1tov\u00fdch limitov, obmedzovania r\u00fdchlosti po prekro\u010den\u00ed prahov\u00fdch hodn\u00f4t a obmedzen\u00ed slu\u017eieb, ako je blokovanie <a href=\"https:\/\/blog.lebara.co.uk\/sk\/what-does-tethering-mean\/\">tethering<\/a> v zahrani\u010d\u00ed.<\/p>\n\n\n\n<p>Konkr\u00e9tne regula\u010dn\u00e9 pr\u00edklady:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>E\u00da \u201cRoam Like at Home\u201d ru\u0161\u00ed pr\u00edplatky za cestovanie v E\u00da<\/li>\n\n\n\n<li>Austr\u00e1lsko-novoz\u00e9landsk\u00e9 bilater\u00e1lne dohody poskytuj\u00fa zn\u00ed\u017een\u00e9 sadzby<\/li>\n\n\n\n<li>Niektor\u00ed oper\u00e1tori blokuj\u00fa trval\u00fd roaming (SIM karty pou\u017e\u00edvan\u00e9 v zahrani\u010d\u00ed nepretr\u017eite), aby zabr\u00e1nili ve\u013ekoobchodn\u00fdm strat\u00e1m.<\/li>\n<\/ul>\n\n\n\n<p>\u00da\u010dinky t\u00fdchto polit\u00edk vidite\u013en\u00e9 pre pou\u017e\u00edvate\u013ea:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Zn\u00ed\u017eenie r\u00fdchlosti po prekro\u010den\u00ed limitov pre fair-use<\/li>\n\n\n\n<li>SMS upozornenia na 80% roamingov\u00e9ho pr\u00edspevku<\/li>\n\n\n\n<li>Automatick\u00e9 vypnutie slu\u017eby pri pevn\u00fdch d\u00e1tov\u00fdch limitoch<\/li>\n\n\n\n<li>nedostupnos\u0165 niektor\u00fdch slu\u017eieb (MMS, pr\u00e9miov\u00e9 hovory)<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"eSIM_Multi-IMSI_and_the_Future_of_Roaming\"><\/span>eSIM, Multi-IMSI a bud\u00facnos\u0165 roamingu<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Technol\u00f3gia eSIM z\u00e1sadne men\u00ed roaming t\u00fdm, \u017ee umo\u017e\u0148uje s\u0165ahovanie a prep\u00ednanie viacer\u00fdch profilov bez v\u00fdmeny fyzickej karty. Cestuj\u00faci si m\u00f4\u017ee pred odchodom stiahnu\u0165 miestny profil eSIM a okam\u017eite aktivova\u0165 pripojenie podobn\u00e9 miestnemu.<\/p>\n\n\n\n<p>Multi-IMSI umo\u017e\u0148uje jednej SIM karte prezentova\u0165 r\u00f4zne identity v r\u00f4znych regi\u00f3noch, \u010do umo\u017e\u0148uje dom\u00e1cim oper\u00e1torom presmerova\u0165 \u00fa\u010dastn\u00edkov k preferovan\u00fdm roamingov\u00fdm partnerom z cenov\u00fdch alebo kvalitat\u00edvnych d\u00f4vodov. Glob\u00e1lne cestovn\u00e9 karty eSIM vyu\u017e\u00edvaj\u00fa roamingov\u00e9 uzly a multiIMSI, aby pon\u00fakli pokrytie v desiatkach kraj\u00edn prostredn\u00edctvom jedn\u00e9ho profilu na stiahnutie.<\/p>\n\n\n\n<p>O\u010dak\u00e1van\u00e9 technick\u00e9 <a href=\"https:\/\/blog.lebara.co.uk\/sk\/the-latest-trends-in-mobile-phone-technology\/\">trendy<\/a> 2026-2030:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0160ir\u0161ia z\u00e1vislos\u0165 od VoLTE po dokon\u010den\u00ed z\u00e1niku 2G\/3G<\/li>\n\n\n\n<li>5G Samostatn\u00fd roaming s nat\u00edvnymi protokolmi<\/li>\n\n\n\n<li>Rozdelenie siete na pr\u00e9miov\u00e9 roamingov\u00e9 slu\u017eby<\/li>\n\n\n\n<li>Roz\u0161\u00edren\u00e9 prepojenie IPX medzi oper\u00e1tormi<\/li>\n\n\n\n<li>eSIM sa st\u00e1va predvolenou pred fyzickou SIM kartou<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Summary_Putting_the_Technical_Pieces_Together\"><\/span>Zhrnutie: Zlo\u017eenie technick\u00fdch \u010dast\u00ed dokopy<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Roaming sp\u00e1ja r\u00e1diov\u00fd pr\u00edstup, overovanie, spr\u00e1vu mobility, smerovanie a faktur\u00e1ciu do jedn\u00e9ho syst\u00e9mu. Ke\u010f pou\u017e\u00edvate telef\u00f3n v zahrani\u010d\u00ed, zariadenie sa pripoj\u00ed k nav\u0161t\u00edvenej sieti, identita sa over\u00ed v dom\u00e1com HLR\/HSS, poloha sa aktualizuje v oboch sie\u0165ach, prev\u00e1dzka sa vhodne tuneluje alebo smeruje a pou\u017e\u00edvanie sa \u00fa\u010dtuje doma.<\/p>\n\n\n\n<p>K\u013e\u00fa\u010dov\u00e9 poznatky:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Overovanie nikdy neohroz\u00ed tajn\u00e9 k\u013e\u00fa\u010de - dom\u00e1ca sie\u0165 zost\u00e1va autoritat\u00edvna<\/li>\n\n\n\n<li>Sledovanie polohy vyu\u017e\u00edva hierarchick\u00e9 z\u00f3ny, nie presnos\u0165 ako GPS<\/li>\n\n\n\n<li>\u00dadaje pou\u017e\u00edvate\u013eov \u010dasto poch\u00e1dzaj\u00fa z IP priestoru domovskej krajiny.<\/li>\n\n\n\n<li>Prich\u00e1dzaj\u00face volania zvy\u0161uj\u00fa oneskorenie v d\u00f4sledku dopytov HLR a pride\u013eovania MSRN<\/li>\n\n\n\n<li>Ovl\u00e1dacie prvky polit\u00edk umo\u017e\u0148uj\u00fa oper\u00e1torom zav\u00e1dza\u0165 limity, \u0161krtenie a obmedzenia<\/li>\n<\/ul>\n\n\n\n<p>Roaming bude \u010doraz viac zalo\u017een\u00fd na IP a riaden\u00fd politikou, preto\u017ee star\u0161ie siete sa vyp\u00ednaj\u00fa a 5G Standalone sa vyv\u00edja. Pochopenie t\u00fdchto technick\u00fdch vrstiev v\u00e1m pom\u00f4\u017ee zosta\u0165 na cest\u00e1ch inteligentnej\u0161ie pripojen\u00ed a prij\u00edma\u0165 informovan\u00e9 rozhodnutia o po\u017eiadavk\u00e1ch na mobiln\u00e9 slu\u017eby a zariadenia.<\/p>","protected":false},"excerpt":{"rendered":"<p>When your mobile phone connects to a foreign network in a different country, a complex chain of technical processes fires up behind the scenes. This article explains how roaming works technically in mobile networks, covering the signalling, authentication, routing, and billing mechanisms that make international connectivity possible. Roaming lets your SIM keep using your telephone&#8230;<\/p>\n<div><a class=\"read-more button-link\" href=\"https:\/\/blog.lebara.co.uk\/sk\/how-roaming-works-technically-in-mobile-networks\/\">\u010c\u00edtajte viac<\/a><\/div>","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[22],"tags":[],"class_list":["post-4006","post","type-post","status-publish","format-standard","hentry","category-phones","clearfix",false],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/blog.lebara.co.uk\/sk\/wp-json\/wp\/v2\/posts\/4006","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.lebara.co.uk\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.lebara.co.uk\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.lebara.co.uk\/sk\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.lebara.co.uk\/sk\/wp-json\/wp\/v2\/comments?post=4006"}],"version-history":[{"count":2,"href":"https:\/\/blog.lebara.co.uk\/sk\/wp-json\/wp\/v2\/posts\/4006\/revisions"}],"predecessor-version":[{"id":4020,"href":"https:\/\/blog.lebara.co.uk\/sk\/wp-json\/wp\/v2\/posts\/4006\/revisions\/4020"}],"wp:attachment":[{"href":"https:\/\/blog.lebara.co.uk\/sk\/wp-json\/wp\/v2\/media?parent=4006"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.lebara.co.uk\/sk\/wp-json\/wp\/v2\/categories?post=4006"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.lebara.co.uk\/sk\/wp-json\/wp\/v2\/tags?post=4006"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}