{"id":52137,"date":"2019-11-01T00:00:00","date_gmt":"2019-10-31T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/nb-iot-kak-on-rabotaet-chast-2"},"modified":"2020-02-18T13:59:48","modified_gmt":"2020-02-18T10:59:48","slug":"nb-iot-kak-on-rabotaet-chast-2","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/administrirovanie\/nb-iot-kak-on-rabotaet-chast-2","title":{"rendered":"NB-IoT: Cum func\u021bioneaz\u0103? Partea 2","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><b>Data trecut\u0103 am discutat despre caracteristicile noului standard NB-IoT din perspectiva arhitecturii re\u021belei de acces radio. Ast\u0103zi vom analiza ce s-a schimbat \u00een nucleul re\u021belei (Core Network) la NB-IoT. A\u0219adar, s\u0103 \u00eencepem.<br \/>\n<\/b><\/p>\n<p><img decoding=\"async\" alt=\"NB-IoT: Cum func\u021bioneaz\u0103? Partea 2\" src=\"\/wp-content\/uploads\/2019\/11\/ef0e9fab23936e8ba104f65a7440a487.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n\u00cen nucleul re\u021belei s-au produs modific\u0103ri semnificative. \u00cencepem cu faptul c\u0103 a ap\u0103rut un nou element, precum \u0219i o serie de mecanisme, care sunt definite de standard ca \u201eCIoT EPS Optimization\u201d sau optimizarea re\u021belei de baz\u0103 pentru internetul mobil al obiectelor. <\/p>\n<p>Dup\u0103 cum se \u0219tie, \u00een re\u021belele mobile exist\u0103 dou\u0103 canale principale de comunica\u021bie, numite Control Plane (CP) \u0219i User Plane (UP). Control Plane este destinat schimbului de mesaje de semnalizare \u00eentre diferitele elemente ale re\u021belei \u0219i serve\u0219te pentru asigurarea mobilit\u0103\u021bii (Mobility management) dispozitivelor (UE) \u0219i stabilirea\/p\u0103strarea sesiunii de transfer de date (Session Management). User Plane este, de fapt, canalul de transfer al traficului utilizatorilor. \u00cen LTE clasic, distribu\u021bia CP \u0219i UP pe interfe\u021be arat\u0103 astfel:<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<p><img decoding=\"async\" alt=\"NB-IoT: Cum func\u021bioneaz\u0103? Partea 2\" src=\"\/wp-content\/uploads\/2019\/11\/b252f5ac8a9b744f82d3f81cd659de8f.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nMecanismele de optimizare CP \u0219i UP pentru NB-IoT sunt implementate pe nodurile MME, SGW \u0219i PGW, care sunt grupate logic sub un singur element numit C-SGN (Cellular IoT Serving Gateway Node). De asemenea, standardul preconizeaz\u0103 apari\u021bia unui nou element de re\u021bea \u2014 SCEF (Service Capability Exposure Function). Interfa\u021ba \u00eentre MME \u0219i SCEF se nume\u0219te T6a \u0219i este implementat\u0103 pe baza protocolului DIAMETER. Cu toate c\u0103 DIAMETER este un protocol de semnalizare, \u00een NB-IoT este adaptat pentru a transmite volume mici de date non-IP.<\/p>\n<p><img decoding=\"async\" alt=\"NB-IoT: Cum func\u021bioneaz\u0103? Partea 2\" src=\"\/wp-content\/uploads\/2019\/11\/5f2b191d925485b5c841018bda52d9b5.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nDup\u0103 cum sugereaz\u0103 numele, SCEF este un nod de expunere a capabilit\u0103\u021bilor de servicii. Cu alte cuvinte, SCEF ascunde complexitatea re\u021belei operatorului \u0219i elimin\u0103 necesitatea pentru dezvoltatorii de aplica\u021bii de a identifica \u0219i autentifica dispozitivele mobile (UE), oferind serverelor de aplica\u021bii (Application Server, AS) posibilitatea de a ob\u021bine date \u0219i de a gestiona dispozitivele printr-o interfa\u021b\u0103 API unificat\u0103. <\/p>\n<p>Identificatorul UE nu mai este un num\u0103r de telefon (MSISDN) sau o adres\u0103 IP, cum era \u00een re\u021belele clasice 2G\/3G\/LTE, ci a\u0219a-numitul \u201eexternal ID\u201d, definit de standard \u00eentr-un format familiar pentru dezvoltatorii de aplica\u021bii: \u201e@\u201d. Aceasta este o tem\u0103 separat\u0103 mare, care merit\u0103 un material dedicat, a\u0219a c\u0103 nu o vom discuta \u00een detaliu acum. <\/p>\n<p>Acum s\u0103 ne ocup\u0103m de cele mai semnificative nout\u0103\u021bi. \u201eCIoT EPS Optimization\u201d este optimizarea mecanismelor de transmitere a traficului \u0219i gestionarea sesiunilor de utilizator. Iat\u0103 principalele dintre acestea:<\/p>\n<ul>\n<li>DoNAS <\/li>\n<li>NIDD <\/li>\n<li>Mecanismele de economisire a energiei PSM \u0219i eDRX<\/li>\n<li>HLCOM<\/li>\n<\/ul>\n<p>\n<b>DoNAS (Date peste NAS):<\/b><\/p>\n<p>Aceasta este un mecanism dezvoltat pentru a optimiza transmiterea unor volume mici de date. <\/p>\n<p>\u00cen LTE-ul clasic, dispozitivul utilizator la \u00eenregistrarea \u00een re\u021bea stabile\u0219te o conexiune PDN (denumit\u0103 PDN) prin eNodeB c\u0103tre MME-SGW-PGW. Conexiunea UE-eNodeB-MME este denumit\u0103 \u201eSignaling Radio Bearer\u201d (SRB). Atunci c\u00e2nd este necesar s\u0103 se transmit\u0103\/primeasc\u0103 date, UE stabile\u0219te o alt\u0103 conexiune cu eNodeB - \u201eData Radio Bearer\u201d (DRB), pentru transmiterea traficului utilizatorului c\u0103tre SGW \u0219i, mai departe, c\u0103tre PGW (interfe\u021bele S1-U \u0219i S5, respectiv). La finalizarea schimbului \u0219i \u00een lipsa traficului timp de o perioad\u0103 determinat\u0103 (de obicei 5-20 de secunde), aceste conexiuni sunt \u00eentrerupte, iar dispozitivul trece \u00een modul de a\u0219teptare sau \u201eIdle Mode\u201d. Atunci c\u00e2nd este necesar schimbul unei noi por\u021bii de date, SRB \u0219i DRB sunt reinstalate.<\/p>\n<p>\u00cen NB-IoT, transmiterea traficului utilizatorului se poate realiza prin canalul de semnalizare (SRB), \u00een mesajele protocolului NAS (<noindex><a rel=\"nofollow\" href=\"http:\/\/www.3gpp.org\/more\/96-nas\">http:\/\/www.3gpp.org\/more\/96-nas<\/a><\/noindex>). Stabilirea DRB nu mai este necesar\u0103. Acest lucru reduce semnificativ \u00eenc\u0103rc\u0103tura de semnalizare, economise\u0219te resursele radio ale re\u021belei \u0219i, cel mai important \u2014 prelunge\u0219te durata de via\u021b\u0103 a bateriei dispozitivului. <\/p>\n<p>Pe segmentul eNodeB - MME, datele utilizatorilor \u00eencep s\u0103 fie transmise prin interfa\u021ba S1-MME, ceea ce nu exista \u00een tehnologia LTE clasic\u0103, \u0219i este folosit pentru aceasta protocolul NAS, \u00een care apare \u201eUser data container\u201d.<\/p>\n<p><img decoding=\"async\" alt=\"NB-IoT: Cum func\u021bioneaz\u0103? Partea 2\" src=\"\/wp-content\/uploads\/2019\/11\/aa2ea680deac42cca298036d7e1fbb30.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nPentru a realiza transmiterea \u201eUser Plane\u201d de la MME la SGW, apare o nou\u0103 interfa\u021b\u0103 S11-U, care este destinat\u0103 transmiterii unor volume mici de date utilizator. La baza protocolului S11-U se afl\u0103 GTP-U v1, care este folosit pentru transmiterea User Plane \u0219i pe alte interfe\u021be ale arhitecturii re\u021belei 3GPP.<br \/>\n<img decoding=\"async\" alt=\"NB-IoT: Cum func\u021bioneaz\u0103? Partea 2\" src=\"\/wp-content\/uploads\/2019\/11\/0a295d230c8f0c1858c7eaf278ea472a.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<b>NIDD (livrarea de date non-IP):<\/b><\/p>\n<p>\u00cen cadrul unei optimiz\u0103ri suplimentare a mecanismelor de transmitere a unor volume mici de date, \u00een plus fa\u021b\u0103 de tipurile deja existente de PDN, cum ar fi IPv4, IPv6 \u0219i IPv4v6, a ap\u0103rut un alt tip \u2014 non-IP. \u00cen acest caz, UE nu prime\u0219te o adres\u0103 IP, iar datele sunt transmise f\u0103r\u0103 utilizarea protocolului IP. Exist\u0103 mai multe motive pentru aceasta:<\/p>\n<ol>\n<li>Dispozitivele IoT, cum ar fi senzorii, pot transmite volume foarte mici de date, 20 de byte sau chiar mai pu\u021bin. Av\u00e2nd \u00een vedere c\u0103 dimensiunea minim\u0103 a antetului IP este de 20 de byte, encapsularea \u00een IP poate fi uneori o necesitate costisitoare.<\/li>\n<li>Nu este necesar\u0103 implementarea unui stiv IP \u00een cip, ceea ce duce la reducerea costurilor (o \u00eentrebare pentru discu\u021bie \u00een comentarii).<\/li>\n<\/ol>\n<p>\n\u00cen general, o adres\u0103 IP este necesar\u0103 pentru device-urile IoT pentru a transmite date prin internet. \u00cen conceptul NB-IoT, SCEF ac\u021bioneaz\u0103 ca un punct unic de conectare pentru AS, iar schimbul de date \u00eentre dispozitive \u0219i serverele de aplica\u021bii se face prin intermediul API-ului. \u00cen absen\u021ba SCEF, datele non-IP pot fi transmise c\u0103tre AS printr-un tunel Point-to-Point (PtP) de la PGW, iar encapsularea \u00een IP se va face deja pe acesta.<\/p>\n<p>Toate acestea se \u00eencadreaz\u0103 \u00een paradigma NB-IoT - maximizarea simplific\u0103rii \u0219i reducerii costurilor dispozitivelor.<\/p>\n<p><b>Mecanismele de economisire a energiei PSM \u0219i eDRX:<\/b><\/p>\n<p>Unul dintre principalele avantaje ale re\u021belelor LPWAN este eficien\u021ba energetic\u0103. Se afirm\u0103 c\u0103 dispozitivul poate func\u021biona autonom timp de p\u00e2n\u0103 la 10 ani pe o singur\u0103 baterie. S\u0103 vedem cum se ating astfel de valori. <\/p>\n<p>C\u00e2nd un dispozitiv consum\u0103 cea mai mic\u0103 cantitate de energie? Corect, atunci c\u00e2nd este oprit. \u0218i dac\u0103 dispozitivul nu poate fi complet deconectat, haide\u021bi s\u0103 deconect\u0103m modulul radio, \u00een perioada \u00een care acesta nu este necesar. Doar c\u0103 trebuie s\u0103 se acorde aprobat acest lucru cu re\u021beaua.<\/p>\n<p> <b>PSM (Modul de economisire a energiei):<\/b><\/p>\n<p>Modul de economisire a energiei PSM permite dispozitivului s\u0103 opreasc\u0103 pe termen lung modulul radio, r\u0103m\u00e2n\u00e2nd \u00een acela\u0219i timp \u00eenregistrat \u00een re\u021bea, \u0219i s\u0103 nu re\u00eennoiasc\u0103 PDN de fiecare dat\u0103 c\u00e2nd este necesar s\u0103 transmit\u0103 date. <\/p>\n<p>Pentru ca re\u021beaua s\u0103 \u0219tie c\u0103 dispozitivul este \u00eenc\u0103 disponibil, acesta ini\u021biaz\u0103 periodic o procedur\u0103 de actualizare - Tracking Area Update (TAU). Frecven\u021ba acestei proceduri este setat\u0103 de re\u021bea prin intermediul unui temporizator T3412, a c\u0103rui valoare este transmis\u0103 dispozitivului \u00een timpul procedurii de Ata\u0219are sau a TAU-ului curent. \u00cen LTE clasic, valoarea implicit\u0103 a acestui temporizator este de 54 de minute, iar cea maxim\u0103 este de 186 de minute. Cu toate acestea, pentru a asigura o eficien\u021b\u0103 energetic\u0103 ridicat\u0103, necesitatea de a ie\u0219i \u00een spectrul radio la fiecare 186 de minute este o necesitate costisitoare. Pentru a rezolva aceast\u0103 problem\u0103, a fost dezvoltat mecanismul PSM.<\/p>\n<p>Dispozitivul activeaz\u0103 modul PSM transmit\u00e2nd \u00een mesajele \u201eAttach Request\u201d sau \u201eTracking Area Request\u201d valorile celor doi timere T3324 \u0219i T3412-Extended. Primul define\u0219te timpul \u00een care dispozitivul va fi disponibil dup\u0103 trecerea \u00een \u201eIdle Mode\u201d. Al doilea este timpul dup\u0103 care trebuie efectuat TAU, \u00eens\u0103 acum valoarea sa poate ajunge la 35712000 de secunde sau 413 zile. \u00cen func\u021bie de set\u0103ri, MME poate accepta valorile timerelor primite de la dispozitiv sau le poate modifica, transmi\u021b\u00e2nd noi valori \u00een mesajele \u201eAttach Accept\u201d sau \u201eTracking Area Update Accept\u201d. Acum dispozitivul poate s\u0103 nu activeze modul radio timp de 413 zile \u0219i s\u0103 r\u0103m\u00e2n\u0103 \u00eenregistrat \u00een re\u021bea. Ca rezultat, ob\u021binem o economisire colosal\u0103 a resurselor re\u021belei \u0219i eficien\u021ba energetic\u0103 a dispozitivelor!<\/p>\n<p><img decoding=\"async\" alt=\"NB-IoT: Cum func\u021bioneaz\u0103? Partea 2\" src=\"\/wp-content\/uploads\/2019\/11\/2ac7fdc892c8b569b5b19a33472c6045.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nCu toate acestea, \u00een acest mod, dispozitivul nu este disponibil dec\u00e2t pentru comunica\u021biile de intrare. Dac\u0103 este necesar s\u0103 transmit\u0103 ceva c\u0103tre serverul de aplica\u021bii, dispozitivul poate ie\u0219i din PSM oric\u00e2nd \u0219i poate trimite date, r\u0103m\u00e2n\u00e2nd activ apoi timp de timerul T3324 pentru a primi mesaje informa\u021bionale de la AS (dac\u0103 acestea exist\u0103).<\/p>\n<p><b>eDRX (recep\u021bie discontinu\u0103 extins\u0103):<\/b><\/p>\n<p>eDRX, modul extins de recep\u021bie discontinu\u0103. Pentru a transmite date c\u0103tre un dispozitiv care se afl\u0103 \u00een \u201eIdle mode\u201d, re\u021beaua efectueaz\u0103 procedura de alertare \u2014 \u201ePaging\u201d. La primirea pagin\u0103rii, dispozitivul ini\u021biaz\u0103 stabilirea SRB pentru comunicarea ulterioar\u0103 cu re\u021beaua. Dar pentru a nu pierde mesajul Paging adresat s\u0103u, dispozitivul trebuie s\u0103 monitorizeze constant spectrul radio, ceea ce consum\u0103 \u0219i mult\u0103 energie. <\/p>\n<p>eDRX este un mod \u00een care dispozitivul prime\u0219te mesaje de la re\u021bea nu constant, ci periodic. \u00cen timpul procedurilor Attach sau TAU, dispozitivul convene\u0219te cu re\u021beaua intervalele de timp \u00een care va \u201easculta\u201d canalul. \u00cen consecin\u021b\u0103, \u00een aceste intervale se va realiza procedura de Paging. \u00cen modul eDRX, activitatea dispozitivului este \u00eemp\u0103r\u021bit\u0103 \u00een cicluri (eDRX cycle). La \u00eenceputul fiec\u0103rui ciclu se afl\u0103 a\u0219a-numita \u201efereastr\u0103 de paginare\u201d (Paging Time Window, ulterior PTW) \u2014 aceasta este perioada \u00een care dispozitivul ascult\u0103 canalul radio. Dup\u0103 finalizarea PTW, dispozitivul dezactiveaz\u0103 modul radio p\u00e2n\u0103 la sf\u00e2r\u0219itul ciclului.<br \/>\n<img decoding=\"async\" alt=\"NB-IoT: Cum func\u021bioneaz\u0103? Partea 2\" src=\"\/wp-content\/uploads\/2019\/11\/924110cbe84765d11efec28238de3dd1.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<b>HLCOM (comunicare cu laten\u021b\u0103 mare):<\/b><\/p>\n<p>Dac\u0103 este necesar s\u0103 transmit\u0103 date, dispozitivul poate ie\u0219i din oricare dintre cele dou\u0103 moduri de economisire a energiei, f\u0103r\u0103 a a\u0219tepta finalizarea ciclului PSM sau eDRX. Dar datele pot fi transmise c\u0103tre dispozitiv doar atunci c\u00e2nd este activ.<\/p>\n<p>Func\u021bionalitatea HLCOM sau comunicarea cu \u00eent\u00e2rzieri mari \u00eenseamn\u0103 c\u0103 pachetele Downlink sunt bufferizate pe SGW pentru perioada \u00een care dispozitivul este \u00een modul de economisire a energiei \u0219i nu este disponibil pentru comunicare. Pachetele bufferizate vor fi livrate imediat ce dispozitivul iese din PSM, efectu\u00e2nd TAU sau transmi\u021b\u00e2nd trafic Uplink, sau c\u00e2nd se va \u00eenregistra PTW.<\/p>\n<p>Aceasta impune, f\u0103r\u0103 \u00eendoial\u0103, o con\u0219tientizare din partea dezvoltatorilor de produse IoT, deoarece comunicarea cu dispozitivul nu este \u00een timp real \u0219i necesit\u0103 o abordare specific\u0103 \u00een construc\u021bia logica de afaceri a aplica\u021biilor.<\/p>\n<p>\u00cen concluzie, spunem: implementarea a ceva nou este \u00eentotdeauna fascinant\u0103, iar acum ne confrunt\u0103m cu un standard care nu a fost \u00eenc\u0103 testat pe deplin, chiar \u0219i de marii 'gigan\u021bi', cum ar fi Vodafone \u0219i Telefonica \u2013 de aceea este cu at\u00e2t mai captivant. Prezentarea noastr\u0103 nu pretinde a fi complet\u0103, dar sper\u0103m c\u0103 ofer\u0103 o \u00een\u021belegere suficient\u0103 a tehnologiei. V\u0103 vom fi recunosc\u0103tori pentru feedback.<\/p>\n<p><i>Autor: Expert \u00een solu\u021bii convergente \u0219i servicii multimedia Alexei Lap\u0219in <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/users\/aslapsh\/\" class=\"user_link\">aslapsh<\/a><\/noindex><\/i><br \/>\n<br \/>Sursa: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/ru_mts\/blog\/431648\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u043f\u0440\u043e\u0448\u043b\u044b\u0439 \u0440\u0430\u0437 \u043c\u044b \u0433\u043e\u0432\u043e\u0440\u0438\u043b\u0438 \u043e\u0431 \u043e\u0441\u043e\u0431\u0435\u043d\u043d\u043e\u0441\u0442\u044f\u0445 \u043d\u043e\u0432\u043e\u0433\u043e \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0430 NB-IoT \u0441 \u0442\u043e\u0447\u043a\u0438 \u0437\u0440\u0435\u043d\u0438\u044f \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u044b \u0441\u0435\u0442\u0438 \u0440\u0430\u0434\u0438\u043e\u0434\u043e\u0441\u0442\u0443\u043f\u0430. \u0421\u0435\u0433\u043e\u0434\u043d\u044f \u043f\u043e\u0440\u0430\u0441\u0441\u0443\u0436\u0434\u0430\u0435\u043c, \u0447\u0442\u043e \u0438\u0437\u043c\u0435\u043d\u0438\u043b\u043e\u0441\u044c \u0432 \u044f\u0434\u0440\u0435 \u0441\u0435\u0442\u0438 (Core Network) \u043f\u0440\u0438 NB-IoT. \u0418\u0442\u0430\u043a, \u043f\u043e\u0435\u0445\u0430\u043b\u0438. \u0412 \u044f\u0434\u0440\u0435 \u0441\u0435\u0442\u0438 \u043f\u0440\u043e\u0438\u0437\u043e\u0448\u043b\u0438 \u0437\u043d\u0430\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0435 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f. \u041d\u0430\u0447\u043d\u0435\u043c \u0441 \u0442\u043e\u0433\u043e, \u0447\u0442\u043e \u043f\u043e\u044f\u0432\u0438\u043b\u0441\u044f \u043d\u043e\u0432\u044b\u0439 \u044d\u043b\u0435\u043c\u0435\u043d\u0442, \u0430 \u0442\u0430\u043a\u0436\u0435 \u0440\u044f\u0434 \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c\u043e\u0432, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u044b \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043e\u043c \u043a\u0430\u043a \u201cCIoT EPS Optimization\u201d \u0438\u043b\u0438 \u043e\u043f\u0442\u0438\u043c\u0438\u0437\u0430\u0446\u0438\u0438 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-52137","post","type-post","status-publish","format-standard","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0412 \u043f\u0440\u043e\u0448\u043b\u044b\u0439 \u0440\u0430\u0437 \u043c\u044b \u0433\u043e\u0432\u043e\u0440\u0438\u043b\u0438 \u043e\u0431 \u043e\u0441\u043e\u0431\u0435\u043d\u043d\u043e\u0441\u0442\u044f\u0445 \u043d\u043e\u0432\u043e\u0433\u043e \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0430 NB-IoT \u0441 \u0442\u043e\u0447\u043a\u0438 \u0437\u0440\u0435\u043d\u0438\u044f \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u044b \u0441\u0435\u0442\u0438 \u0440\u0430\u0434\u0438\u043e\u0434\u043e\u0441\u0442\u0443\u043f\u0430. \u0421\u0435\u0433\u043e\u0434\u043d\u044f \u043f\u043e\u0440\u0430\u0441\u0441\u0443\u0436\u0434\u0430\u0435\u043c, \u0447\u0442\u043e \u0438\u0437\u043c\u0435\u043d\u0438\u043b\u043e\u0441\u044c \u0432 \u044f\u0434\u0440\u0435 \u0441\u0435\u0442\u0438 (Core Network) \u043f\u0440\u0438 NB-IoT.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/ro\/blog\/administrirovanie\/nb-iot-kak-on-rabotaet-chast-2\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.2.1\" \/>\n\t\t<meta property=\"og:locale\" content=\"ro_RO\" \/>\n\t\t<meta property=\"og:site_name\" content=\"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"\ud83e\udd47NB-IoT: \u043a\u0430\u043a \u043e\u043d \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u0442? 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