{"id":603,"date":"2018-10-11T19:22:21","date_gmt":"2018-10-11T17:22:21","guid":{"rendered":"https:\/\/blog.nav.ro\/?p=603"},"modified":"2019-02-22T12:00:18","modified_gmt":"2019-02-22T10:00:18","slug":"tehnologia-wireless-5g","status":"publish","type":"post","link":"https:\/\/www.nav.ro\/blog\/tehnologia-wireless-5g\/","title":{"rendered":"Tehnologia wireless 5G"},"content":{"rendered":"<p>5G este urm\u0103toarea genera\u021bie de tehnologie pentru re\u021bele mobile care va l\u0103sa \u00een urm\u0103 4G. La fel ca orice genera\u021bie din urm\u0103, 5G \u00ee\u0219i propune s\u0103 fac\u0103 comunicarea mobil\u0103 mai rapid\u0103 \u0219i mai sigur\u0103, pe m\u0103sur\u0103 ce tot mai multe dispozitive sunt conectate online.<\/p>\n<p>Spre deosebire de anii \u00een care re\u021belele de telefonie mobil\u0103 aveau nevoie doar s\u0103 suporte telefoanele mobile care dec\u00e2t navigau pe web \u0219i trimiteau mesaje text, acum avem tot felul de dispozitive care necesit\u0103 l\u0103\u021bime de band\u0103, cum ar fi smartphone-urile cu streaming HD, ceasuri smart cu planuri de date, , autoturisme care se conduc singure \u0219i ma\u0219ini conectate la internet \u0219i alte dispozitive promi\u021b\u0103toare, cum ar fi senzorii pentru starea de s\u0103n\u0103tate \u0219i hardware-ul ne\u00eentrerupt AR \u0219i VR.<\/p>\n<p>Pe m\u0103sur\u0103 ce se conecteaz\u0103 mai multe miliarde de dispozitive la web, \u00eentreaga infrastructur\u0103 trebuie s\u0103 g\u0103zduiasc\u0103 traficul nu doar pentru a suporta conexiuni mai rapide, ci \u0219i pentru a gestiona c\u00e2t mai bine conexiunile simultane \u0219i pentru a oferi o acoperire mai larg\u0103 pentru aceste dispozitive. Acesta este motivul pentru care a fost g\u00e2ndit\u0103 tehnologia 5G.<\/p>\n<p><strong>Cum este 5G diferit de celelalte &#8222;G-uri&#8221;?<\/strong><\/p>\n<p>5G este pur \u0219i simplu urm\u0103toarea genera\u021bie numerotat\u0103 dup\u0103 4G, care a \u00eenlocuit toate tehnologiile mai vechi.<\/p>\n<p>&#8211; 1G a introdus pachetele de voce analogice<\/p>\n<p>&#8211; 2G a introdus pachetele de voce digitale<\/p>\n<p>&#8211; 3G a introdus pachetele de date mobile<\/p>\n<p>&#8211; 4G a preg\u0103tit calea pentru utilizarea pe scar\u0103 larg\u0103 a internetului mobil<\/p>\n<p><strong>Pentru ce va fi folosit 5G?<\/strong><\/p>\n<p>Acest lucru ar putea p\u0103rea evident av\u00e2nd \u00een vedere c\u00e2t de omniprezente sunt telefoanele inteligente, \u00eens\u0103, \u00een timp ce telefoanele sunt cu siguran\u021b\u0103 un juc\u0103tor important pe pia\u021ba comunica\u021biilor mobile, este posibil ca acestea s\u0103 nu fie focalizarea primar\u0103 \u00eentr-o re\u021bea de 5G.<\/p>\n<p>Dup\u0103 cum ve\u021bi vedea mai jos, componentele cheie \u00een tehnologia 5G sunt conexiuni ultra-rapide \u0219i \u00eent\u00e2rzieri minime. \u00cen timp ce acest lucru este cu siguran\u021b\u0103 grozav pentru oricine face streaming video de pe telefonul sau, este mult mai important \u00een scenarii \u00een care minimizarea \u00eent\u00e2rzierilor este foarte important\u0103, cum ar fi viitorul dispozitivelor interconectate.<\/p>\n<p>Una dintre aplica\u021bii ar putea fi dispozitivele de realitate augmentat\u0103 sau c\u0103\u0219tile de realitate virtual\u0103. Aceste dispozitive necesit\u0103 o cantitate enorm\u0103 de l\u0103\u021bime de band\u0103 \u0219i trebuie s\u0103 comunice pe internet c\u00e2t mai repede posibil pentru a-\u0219i asigura efectele inten\u021bionate. Orice laten\u021b\u0103 poate influen\u021ba drastic felul \u00een care se simt lucrurile reale \u00een acele medii.<\/p>\n<p>Acela\u0219i lucru este valabil \u0219i pentru oricare alte dispozitive ce trebuie s\u0103 ac\u021bioneze rapid, cum ar fi ma\u0219inile autonome s\u0103 evite coliziunile bru\u0219te \u0219i s\u0103 \u00een\u021beleaga direc\u021biile pe care trebuie s\u0103 circule, hardware-ul comandat de la distan\u021b\u0103 \u0219i sistemele robotice care \u00eenva\u021b\u0103 sau respect\u0103 controler-ele de la distan\u021b\u0103.<\/p>\n<p>Cu toate acestea, 5G va continua s\u0103 deschid\u0103 calea pentru o conectivitate mai u\u0219oar\u0103 pentru dispozitivele noastre de zi cu zi, cum ar fi jocurile, efectuarea de apeluri video, streaming de filme, desc\u0103rcarea fi\u0219ierelor, partajarea HD \u0219i a con\u021binutului 4K, primirea de actualiz\u0103ri pentru trafic \u00een timp real, etc.<\/p>\n<p>5G este at\u00e2t de rapid \u00eenc\u00e2t nu va fi disponibil doar pentru dispozitivele mobile. Are poten\u021bialul de a \u00eenlocui chiar \u0219i accesul prin cablu fix c\u00e2t \u0219i conexiunile f\u0103r\u0103 fir!<\/p>\n<p><strong>Cum func\u021bioneaz\u0103 5G?<\/strong><\/p>\n<p>Standardele pentru 5G \u00eenc\u0103 nu sunt pe deplin consolidate, iar furnizorii de servicii nu vor folosi neap\u0103rat aceea\u0219i tehnologie pentru implementarea 5G, deci este greu de spus exact cum va func\u021biona pentru fiecare companie din fiecare \u021bar\u0103.<\/p>\n<p>De exemplu, \u00een unele cazuri, 5G va furniza date \u00eentr-un interval complet diferit de frecven\u021be dec\u00e2t re\u021belele existente. Aceast\u0103 gam\u0103 mai mare de valuri se va numi gama de valuri milimetrice, \u0219i va func\u021biona \u00een intervalul 30 GHz &#8211; 300 GHz (\u00een condi\u021biile \u00een care re\u021belele actuale utilizeaz\u0103 benzi sub 6 GHZ).<\/p>\n<p>Ceea ce face acest lucru semnificativ este c\u0103, \u00een loc de o multitudine de dispozitive s\u0103 \u00eemparta un spa\u021biu mic din acel spectru, acestea vor putea s\u0103 se &#8222;r\u0103sp\u00e2ndeasc\u0103&#8221; pe acea linie \u0219i s\u0103 utilizeze mai mult\u0103 l\u0103\u021bime de band\u0103, ceea ce \u00eenseamn\u0103 viteze mai mari \u0219i mai pu\u021bine conexiuni pierdute.<\/p>\n<p>Cu toate acestea, \u00een timp ce aceste valuri de frecven\u021b\u0103 mai \u00eenalte pot transporta mai multe date, nu pot difuza \u0219i la cele inferioare, motiv pentru care unii furnizori, \u00een special T-Mobile, vor furniza 5G pe spectrul de 600 MHz pentru \u00eenceput, apoi trec\u00e2nd \u0219i pe celelalte frecven\u021be.<\/p>\n<p>Furnizorii care utilizeaz\u0103 frecven\u021be mai mari ar putea necesita pozi\u021bionarea unor sta\u021bii wireless mici \u00eentre turnurile de 5G pentru a repeta datele ca s\u0103 ofere viteze de 5G \u00een timp ce, \u00een acela\u0219i timp, s\u0103 acopere distan\u021be mai mari. \u00cen loc s\u0103 transmit\u0103 semnale peste tot pentru a ajunge la dispozitivele din apropiere, aceste posturi vor folosi probabil ceea ce se nume\u0219te beamforming pentru a direc\u021biona semnale c\u0103tre obiective specifice.<\/p>\n<p>Acest tip de configurare ar trebui s\u0103 permit\u0103 transmisii mai rapide nu numai pentru c\u0103 vor exist\u0103 mai multe sta\u021bii care s\u0103 ajute la transmiterea datelor la viteza maxim\u0103, dar \u0219i deoarece semnalele nu vor mai trebui s\u0103 se deplaseze fizic p\u00e2n\u0103 la acoperirea altor dispozitive. Aceast\u0103 comunicare \u00eentre dispozitive este cea care va permite o laten\u021b\u0103 sc\u0103zut\u0103.<\/p>\n<p>Odat\u0103 ce 5G va fi disponibil\u0103 la scar\u0103 larg\u0103, este posibil ca acesta s\u0103 fie ultimul progres major \u00een re\u021belele mobile. \u00cen loc de 6G sau 7G mai t\u00e2rziu, s-ar putea pur \u0219i simplu s\u0103 r\u0103m\u00e2nem cu 5G, dar s\u0103 ob\u021binem \u00eembun\u0103t\u0103\u021biri incrementale \u00een timp.<\/p>\n<p><strong>C\u00e2nd va fi disponibil\u0103 tehnologia 5G?<\/strong><\/p>\n<p>Disponibilitatea serviciului 5G depinde nu numai de zona \u00een care locui\u021bi, ci \u0219i de furnizorii de servicii care sunt disponibili \u00een loca\u021bia dvs.<\/p>\n<p><strong>Specifica\u021bii 5G: Rata de date, Laten\u021ba \u0219i altele<\/strong><\/p>\n<p>5G \u00eencearc\u0103 s\u0103 \u00eembun\u0103t\u0103\u021beasc\u0103 mai multe domenii de comunica\u021bii mobile, de la c\u00e2t de repede pute\u021bi desc\u0103rca \u0219i \u00eenc\u0103rca date, la num\u0103rul de dispozitive care se pot conecta la internet \u00een acela\u0219i timp.<\/p>\n<p><strong>Rata de date<\/strong><\/p>\n<p>Acestea sunt cerin\u021bele minime pentru 5G. Cu alte cuvinte, este viteza minim\u0103 de desc\u0103rcare \u0219i \u00eenc\u0103rcare de date pe care fiecare celul\u0103 5G trebuie s\u0103 o suporte, cu toate c\u0103 aceasta poate fluctua \u00een anumite condi\u021bii.<\/p>\n<p>&#8211; Download: 20 Gb \/ s (2,5 GB \/ s)<\/p>\n<p>&#8211; Upload: 10 Gb \/ s (1,25 GB \/ s)<\/p>\n<p>Numerele de mai sus sunt cele pe care trebuie s\u0103 le suporte fiecare sta\u021bie mobil\u0103, dar asta nu \u00eenseamn\u0103 c\u0103 dispozitivul dvs. va beneficia de aceste viteze. Viteza este \u00eemp\u0103r\u021bit\u0103 \u00eentre to\u021bi utilizatorii conecta\u021bi la aceea\u0219i sta\u021bie de baz\u0103, ceea ce face ca aceste rate s\u0103 fie mai realiste pentru fiecare utilizator:<\/p>\n<p>&#8211; Download: 100 Mb \/ s (12,5 MB \/ s)<\/p>\n<p>&#8211; Upload: 50 Mb \/ s (6.25 MB \/ s)<\/p>\n<p>Cu viteze de 5G, pute\u021bi desc\u0103rca un film de 3 GB pe telefon \u00een doar patru minute sau pute\u021bi \u00eenc\u0103rca un videoclip de 1 GB pe YouTube \u00een doar trei minute.<\/p>\n<p>Comparativ cu viteza medie de desc\u0103rcare date mobile raportat\u0103 de Speedtest.net \u00een prima jum\u0103tate a anului 2018, pentru utilizatorii din Statele Unite, a fost de aproximativ 27 Mbps &#8211; de peste 3,5 ori mai lent dec\u00e2t ceea ce este propus de 5G.<\/p>\n<p><strong>Densitatea conexiunii<\/strong><\/p>\n<p>5G va sus\u021bine cel pu\u021bin 1 milion de dispozitive pentru fiecare kilometru p\u0103trat. Aceasta \u00eenseamn\u0103 c\u0103, \u00een cadrul acelei cantit\u0103\u021bi de spa\u021biu, 5G va putea conecta simultan 1 milion sau mai multe dispozitive la Internet.<\/p>\n<p>Acest tip de scenariu ar putea p\u0103rea greu de \u00een\u021beles, av\u00e2nd \u00een vedere c\u0103 ora\u0219ele cu cea mai mare densitate a popula\u021biei (cum ar fi Manila, Filipine \u0219i Mumbai, India) ocup\u0103 doar 70.000 \u0219i 110.000 de persoane pe 2Km p\u0103tra\u021bi.<\/p>\n<p>Cu toate acestea, 5G nu are nevoie s\u0103 suporte doar unul sau dou\u0103 dispozitive per persoan\u0103, ci \u0219i smartwatch-ul tuturor, toate vehiculele din zon\u0103 care ar putea fi conectate la internet, butoane inteligente ale u\u0219ilor din casele din apropiere \u0219i orice alte dispozitive curente sau care urmeaz\u0103 s\u0103 fie lansate \u0219i s\u0103 fie conectate \u00een re\u021bea.<\/p>\n<p><strong>Laten\u021ba<\/strong><\/p>\n<p>Laten\u021ba se refer\u0103 la intervalul de timp dintre momentul \u00een care turnul celular trimite date \u0219i p\u00e2n\u0103 c\u00e2nd dispozitivul de la destina\u021bie (cum ar fi  telefonul dvs.) prime\u0219te acele datele.<\/p>\n<p>5G necesit\u0103 o laten\u021b\u0103 minim\u0103 de doar 4 ms, presupun\u00e2nd c\u0103 sunt \u00eendeplinite condi\u021biile ideale, dar ar putea sc\u0103dea la 1 ms pentru anumite forme de comunica\u021bii, \u00een special pentru comunica\u021bii ultra-fiabile \u0219i laten\u021be reduse (URLLC).<\/p>\n<p>Pentru compara\u021bie, laten\u021ba pe o re\u021bea 4G ar putea fi de aproximativ 50-100 ms, ceea ce este de fapt de dou\u0103 ori mai rapid dec\u00e2t re\u021beaua 3G.<\/p>\n<p><strong>Mobilitate<\/strong><\/p>\n<p>Mobilitatea se refer\u0103 la viteza maxim\u0103 cu care un utilizator poate c\u0103l\u0103tori \u0219i \u00eenc\u0103 s\u0103 beneficieze de servicii de 5G.<\/p>\n<p>Spectrul 5G a definit patru clase pe care le va suporta, oriunde de la o persoan\u0103 sta\u021bionar\u0103 care nu se mi\u0219c\u0103 la cineva care se afl\u0103 \u00eentr-un vehicul de mare vitez\u0103 cum ar fi un tren, care c\u0103l\u0103tore\u0219te p\u00e2n\u0103 la 500 kmh (310 mph).<\/p>\n<p>Este posibil ca diferite zone s\u0103 necesite o alt\u0103 sta\u021bie de baz\u0103 mobil\u0103 pentru a se adapta la viteze diferite. De exemplu, un ora\u0219 mic, care are numai utilizatori care c\u0103l\u0103toresc cu ma\u0219ina \u0219i pe jos, ar putea s\u0103 nu aib\u0103 aceea\u0219i sta\u021bie de baz\u0103 care este inclus\u0103 \u00eentr-un ora\u0219 mai mare cu un sistem de transport public de mare vitez\u0103.<\/p>\n<p><strong>Consumul de energie<\/strong><\/p>\n<p>Eficien\u021ba energetic\u0103 este o alt\u0103 component\u0103 trecut\u0103 \u00een specifica\u021biile 5G. Interfe\u021bele vor fi construite pentru a ajusta rapid consumul de energie \u00een func\u021bie de sarcina curent\u0103.<\/p>\n<p>Atunci c\u00e2nd un o sta\u021bie radio nu este utilizat\u0103, acesta va cobor\u00ee \u00eentr-o stare de putere mai mic\u0103 \u00een mai pu\u021bin de 10 ms \u0219i apoi va reveni la fel de repede la consumul normal atunci c\u00e2nd este nevoie de mai mult\u0103 putere.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>5G este urm\u0103toarea genera\u021bie de tehnologie pentru re\u021bele mobile care va l\u0103sa \u00een urm\u0103 4G. La fel ca orice genera\u021bie din urm\u0103, 5G \u00ee\u0219i propune s\u0103 fac\u0103 comunicarea mobil\u0103 mai rapid\u0103 \u0219i mai sigur\u0103, pe m\u0103sur\u0103 ce tot mai multe dispozitive sunt conectate online. Spre deosebire de anii \u00een care re\u021belele de telefonie mobil\u0103 aveau<\/p>\n","protected":false},"author":1,"featured_media":1228,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[151],"tags":[],"class_list":["post-603","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-noutati"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Tehnologia wireless 5G - NAV.RO Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.nav.ro\/blog\/tehnologia-wireless-5g\/\" \/>\n<meta property=\"og:locale\" content=\"ro_RO\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Tehnologia wireless 5G - NAV.RO Blog\" \/>\n<meta property=\"og:description\" content=\"5G este urm\u0103toarea genera\u021bie de tehnologie pentru re\u021bele mobile care va l\u0103sa \u00een urm\u0103 4G. 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