Kuba i-IPTV ingenise intengiso ngo-1999, inqanaba lokukhula likhawulezile kancinci. Kulindelwe ukuba abasebenzisi be-ITV ye-ITTV behlabathi baya kufikelela ngaphezulu kwe-26 yezigidi ngo-2008, kunye nenqanaba lokukhula konyaka le-ITTV e-China ukusukela ngo-2003 ukuya kuma-245%.
Ngokutsho kophando, ikhilomitha yokugqibela yeIPTVUkufikelela kuqhelekile kusetyenziswa kwimowudi yokungena kwi-DSL ye-DSL ye-DSL, yi-bandwidth kunye nozinzo kunye nezinye izinto, i-IPTV kukhuphiswano lwe-TV iphezulu, kwaye umjikelo mde, kwaye unzima. Ke ngoko, ungayisombulula njani ingxaki yokugqibela ye-IPTV ebaluleke ngakumbi.
I-Wimax (i-World Willinteroper-Internatimi) yiteknoloji yokufikelela engenazingcingo esekwe kwi-IET8202.16 uthotho lweeprotocol, ezithi ngokuthe ngcembe ziba yiTekhnoloji entsha yeTekhnoloji ye-Metro Broadband. Inokutshintsha i-DSL ekhoyo kunye ne-Worl Crensings yokubonelela ngeendlela ezisisigxina, ezikwiselfowuni zoqhagamshelo lwe-wirele. Ngenxa yeendleko zayo zokwakha eziphantsi, intsebenzo ephezulu yobugcisa kunye nokuthembeka okuphezulu, iya kuba yitekhnoloji engcono ukusombulula ingxaki yokufikelela kwi-Mile ye-IPTV.
2, Imeko yangoku yeTekhnoloji yokufikelela kwi-ITV
Okwangoku, itekhnoloji esetyenziswayo esetyenziswayo ukubonelela ngeenkonzo ze-IPTV zibandakanya isantya esiphezulu se-DSL, i-FTTB, ftti kunye nolunye teknoloji yokufikelela kwi-wireline. Ngenxa yotyalo-mali oluphantsi ekusebenziseni inkqubo ye-DSL esele ikho yokuxhasa iinkonzo ze-IPTV, i-3/4 yoLawulo lweTelecom kwi-Asia Sebenzisa iibhokisi eziphezulu zokuguqula imiqondiso ye-DSL ukubonelela ngeenkonzo ze-DTL.
Owona mxholo ubalulekileyo we-IPTV ubandakanya iinkqubo ze-vod kunye neTV. Ukuqinisekisa ukuba umgangatho wokubukela i-IPTV uthelekiswa nenethiwekhi yangoku ye-ITBE, i-ITTV yenethiwekhi iyakwazi ukubonelela ngeemfuno ze-IPTV, kwaye inkxaso ye-DSL ye-Multicast. IPV4 iprotocol ye-protor, musa ukuxhasa i-Mumbiticast. Nangona i-theotily kusekho igumbi lokuphucula itekhnoloji ye-DSL, zimbalwa iindlela zolungelelwaniso kwi-bandwidth.
I-3, iimpawu zetekhnoloji yeWimax
I-Wimax yiteknoloji yokufikelela engenazingcingo esekwe kwi-IEEERE802.16 emigangathweni, eyona nto iphambili yomoya ocetywayo kwi-microwave kunye ne-milwave yamanzi amdaka. Inganikezela kwi-75mbiit / i-S Transferity / s Translations, isiseko sesiseko esinye esiphezulu ukuya kwi-50km. I-Wimax yenzelwe ukuba i-lans ingenazingcingo kunye nokusombulula ingxaki yemayile yokugqibela ye-Broadband, isetyenziselwa ukudibanisa indawo yenkampani, kodwa inokusetyenziswa njengentambo kunye nomgca we-DTH, kwaye unokusetyenziswa njengentambo kunye nomgca we-DTH. Ingasetyenziselwa ukunxibelelana neemeko ezinjengeshishini okanye ekhaya kwi-backbone ye-Wish, kwaye inokusetyenziswa njengolwandiso olungasebenziyo kwintambo kunye ne-DSL ukwenzela ukufikelela kwi-wirelelband.
4, uWimax ufumana ukufikelela kwe-IPTV
(1) Iimfuno ze-IPTV kwinethiwekhi yokufikelela
Eyona nto iphambili kwinkonzo ye-IPTV kukunxibelelana kwayo kunye nexesha lokwenyani. Ngenkonzo ye-ITVV, abasebenzisi banokunandipha umgangatho ophezulu (kufutshane nenqanaba leendaba zeDVD), kwaye banokukhetha ngokukhululekileyo iinkqubo zevidiyo ezivela kwinethiwekhi yebhendi yebhendi, eqondayo phakathi kwababoneleli ngeendaba kunye nabathengi beendaba.
Ukuqinisekisa ukuba umgangatho wokubukela i-IPTV uthelekisa nenethiwekhi yangoku, inethiwekhi ye-ITV ye-ITTV iyafuneka ukuba inike iziqinisekiso ngokomsebenzi we-bandwidth, i-jennel swings, njalo njalo. Ngokwe-bandwidth yofikelelo lomsebenzisi, ukusetyenziswa kwetekhnoloji ekhoyo yepeyinti, abasebenzisi bafuna ubuncinci i-3 ~ 4mbit / i-Bandwit ufikelelo kwi-Bandwidth, ukuba usulelo lwe-Bandwidth finlight, ukuba usulelo lwe-band esemgangathweni, i-bandwids efunekayo iphezulu; Kwindlela yokutshintsha kwejelo, ukuze kuqinisekiswe ukuba abasebenzisi be-IPTV batshintshela phakathi kweendlela ezahlukeneyo, ukuthunyelwa kwesiqhelo kweenkonzo ze-IPTV kufuna ukufikelela kubuchwephesha be-IP yeDigital. Ngokwe-QOS, ukuthintela ukulahleka kwepakethi, i-jitter kunye nenye impembelelo kumgangatho we-IPTV.
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I-DSL, ngenxa yokunqongophala kwezobugcisa, kusekho iingxaki ezininzi ngokomgama, inqanaba kunye nenqanaba lokuphuma. Xa kuthelekiswa ne-DSL, i-Wimax inokugubungela ngokwethiyori enkulu, zibonelela ngamaxabiso edatha ngokukhawuleza, ube nokunganyamezelwa okukhulu kunye ne-QOS ephezulu.
Xa kuthelekiswa ne-Wi-Fi, iWimax ineenzuzo zobugcisa zokugubungela ngokubanzi, i-veraiptier ebanzi, i-windows kunye nokufikelela kwi-Wi-fi-fi isekwe kwi-Intanethi ye-intanethi / i-Intranet, kwiiofisi, okanye iindawo zokugcina izinto; I-Wimax isekwe kwi-Wimax engenazingcingo isekwe kumgangatho we-widipolitan we-wirelet (Wman), esetyenziselwa inkonzo yokufikelela kwidatha ehamba-hlula-hlula-hlulo phantsi kwedatha ephantsi kwesantya esisigxina nesantya esisezantsi.
I-FTTB + LAN, njengeyona ndlela yokufikelela kwiBroadband ephezulu, ihambaIPTVInkonzo ngaphandle kwengxaki enkulu, kodwa inqunyelwe yingxaki ye-wiring edityanisiweyo kwisakhiwo, iindleko zokufakelwa kunye nomgama odluliselweyo obangelwe yi-cable egqwethiweyo. Iimpawu ezifanelekileyo ze-Wimax ezingalindelekanga, ukuhanjiswa okuguquguqukayo kunye nokuqina koqwalaselo, umgangatho we-qss ogqwesileyo wenkonzo kunye nokhuseleko olomeleleyo yonke lenza ukuba ibe yindlela efanelekileyo yokufikelela kwi-ITTV.
(3) Izibonelelo zeWimax ekuqondeni ukufikelela ngaphandle kwamacingo kwi-IPTV
Ngokuthelekisa i-wimax nge-DSL, i-WI-FI kunye neFTTX, inokubonwa ukuba i-wimax yeyona nto ilunge ngakumbi ekufezeni i-IPTV ukufikelela kwi-IPTV. Ukusukela ngoMeyi ka-2006, inani lamalungu e-Wimax akhula aye ku-356, kwaye bangaphezulu kwe-120 abaqhubi behlabathi kwihlabathi liphela bajoyine umbutho. I-Wimax iya kuba yeyona tekhnoloji efanelekileyo ukusombulula imayile yokugqibela ye-IPTV. I-Wimax iya kuba yinye indlela engcono kwi-DSL kunye ne-wi-fi.
(4) Ukufezekiswa kweWimax yokufikelela kwi-IPTV
I-IEEEETER802.16-26-2004 Inqanaba le-terminal elizinzileyo, umgama omninzi wokuhambisa yi-7GHz, kunye nebhendi yalo yonxibelelwano, kunye nebhendi yalo yejelo phakathi kwe-1.25 ~ 20mhz. Xa i-bandwidth i-20 MHZ, ireyithi ephezulu ye-IETE 802.16a inokufikelela kwi-75 MBIT / S, ngokubanzi i-40 mbit / i-40 MBI; Xa i-bandwidth yi-10 MHZ, inokubonelela ngenqanaba lokudlulisela eliphakathi le-20 MBIT.
I-Wimax Inethiwekhi ixhasa iimodeli zeshishini ezinemibala. Iinkonzo zedatha zamaxabiso ahlukeneyo yeyona nto iphambili kwinethiwekhi.Wimax ixhasa amanqanaba ahlukeneyo e-QoS, ngoko ke ukugubungela inethiwekhi kunxulumene ngokusondeleyo nohlobo lwenkonzo. Malunga nokufikelela kwi-IPTV. Kuba i-ITTV ifuna ukuqinisekiswa kwe-qOS ephezulu ye-qsos kunye nenqanaba ledatha elihamba ngesantya esiphezulu. Ke inethiwekhi ye-Wimax isetwe ngokungqinelana nenani labasebenzisi kule ndawo kunye neemfuno zabo. Xa abasebenzisi befumana inethiwekhi ye-ITV. Akukho sidingo sokwenza i-wiring kwakhona, kufuneka kuphela ukongeza izixhobo zokufumana iWimax i-Wimax eyamkelayo kunye nebhokisi ephezulu ye-IP, abasebenzisi banokusebenzisa inkonzo ye-ITTV nangokukhawuleza.
Okwangoku, i-ITTV lishishini elivelayo elinamathuba amakhulu entengiso, kwaye ukukhula kwayo kusekwe kubuncinci. Umgangatho wophuhliso lwayo lwexesha elizayo kukukopa iinkonzo ze-IPTV ezinemithi, kunye neTV ziya kuba yindawo yedijithali ebanzi kunye nemisebenzi yonxibelelwano kunye ne-Intanethi. Kodwa i-ITTV yokufezekisa impumelelo kwinyani, kungekuphela nje ukusombulula ingxaki yomxholo, kodwa nokusombulula ibhotile yekhilomitha yokugqibela.
IXESHA LOKUQALA: I-DEC-05 ukuya ku-024