Mai i te taenga mai o IPTV ki te mākete i te tau 1999, kua tere haere te tere o te tipu. E matapaetia ana ka eke te hunga whakamahi IPTV o te ao ki te neke atu i te 26 miriona i te tau 2008, ā, ko te tere tipu ā-tau o ngā kaiwhakamahi IPTV i Haina mai i te tau 2003 ki te 2008 ka eke ki te 245%.
E ai ki te rangahau, ko te kiromita whakamutunga oIPTVKo te urunga he mea noa te whakamahi i te aratau urunga taura DSL, nā te whānui o te hononga me te pumau me ētahi atu āhuatanga, he ngoikore te IPTV i roto i te whakataetae me te pouaka whakaata noa, ā, he nui te utu o te aratau urunga taura, he roa, he uaua hoki te huringa hanga. Nō reira, he mea tino nui te pehea e whakaoti ai i te raruraru urunga whakamutunga o te IPTV.
Ko WiMAX (WorldwideInteroper-abilityforMicrowave Access) he hangarau urunga ahokore whānui e hangai ana ki te raupapa kawa IEEE802.16, kua huri haere hei wāhi whanaketanga hou mō te hangarau ahokore whānui. Ka taea e ia te whakakapi i ngā hononga DSL me ngā hononga waea hei whakarato i ngā momo hononga ahokore pūmau, pūkoro. Nā te iti o te utu hanga, te mahi hangarau teitei me te pono teitei, he hangarau pai ake tēnei hei whakaoti rapanga urunga whakamutunga o te IPTV.
2, te āhua o nāianei o te hangarau urunga IPTV
I tēnei wā, ko ngā hangarau urunga e whakamahia whānuitia ana hei whakarato ratonga IPTV ko te DSL tere-teitei, te FTTB, te FTTH me ētahi atu hangarau urunga waea. Nā te iti o te haumi ki te whakamahi i te pūnaha DSL o nāianei hei tautoko i ngā ratonga IPTV, e 3/4 o ngā kaiwhakahaere waea i Āhia e whakamahi ana i ngā pouaka whakaata hei huri i ngā tohu DSL ki ngā tohu pouaka whakaata hei whakarato ratonga IPTV.
Ko ngā ihirangi tino nui o te IPTV bearer ko te VOD me ngā hōtaka pouaka whakaata. Hei whakarite kia rite te kounga o te mātakitaki o te IPTV ki tērā o te whatunga taura o nāianei, me whakarato e te whatunga IPTV bearer he taurangi mō te whānui o te hononga, te whakaroa whakawhiti hongere, te QoS whatunga, me ētahi atu, ā, kāore e taea e ēnei āhuatanga o te hangarau DSL te whakatutuki i ngā whakaritenga o te IPTV, ā, he iti noa te tautoko a te DSL mō te multicast. Kāore ngā pouara kawa IPv4 e tautoko i te multicast. Ahakoa he wāhi tonu hei whakapai ake i te hangarau DSL, he iti noa ngā huringa kounga o te whānui o te hononga.
3, ngā āhuatanga o te hangarau WiMAX
He hangarau urunga ahokore whānui a WiMAX e ahu mai ana i te paerewa IEEE802.16, he paerewa atanga hau hou kua whakaarohia mō ngā roopu ngaru ngaruiti me te mirimita. Ka taea e ia te whakarato i te tere tuku tae atu ki te 75Mbit/s, me te kapinga teihana turanga kotahi tae atu ki te 50km. Kua hangaia a WiMAX mō ngā LAN ahokore, ā, hei whakaoti rapanga o te maero whakamutunga o te urunga whānui, ka whakamahia hei hono i ngā "wāhi wera" Wi-Fi ki te Ipurangi, engari hei hono anō hoki i te taiao o te kamupene, o te kāinga rānei ki te raina tuara waea, ka taea te whakamahi hei taura me te raina DTH, ā, ka taea te whakamahi hei taura me te raina DTH. Ka taea hoki te whakamahi hei hono i ngā taiao pēnei i te pakihi, i te kāinga rānei ki te tuara waea, ā, ka taea te whakamahi hei toronga ahokore ki te taura me te DSL hei whakahohe i te urunga whānui ahokore.
4, ka taea e WiMAX te whakamahi i te IPTV hei urunga ahokore
(1) Ngā whakaritenga o te IPTV i runga i te whatunga urunga
Ko te āhuatanga matua o te ratonga IPTV ko tōna taunekeneke me te wā-tūturu. Mā te ratonga IPTV, ka taea e ngā kaiwhakamahi te pārekareka ki ngā ratonga pāpāho matihiko kounga teitei (tata ki te taumata DVD), ā, ka taea e rātou te whiriwhiri noa i ngā kaupapa ataata mai i ngā whatunga IP whānui, ka tutuki ai te taunekeneke nui i waenga i ngā kaiwhakarato pāpāho me ngā kaihoko pāpāho.
Hei whakarite kia rite te kounga o te mātakitaki o te IPTV ki tērā o te whatunga taura o nāianei, me āhei te whatunga urunga IPTV ki te whakarato taurangi mō te whānui o te hononga, te roa o te whakawhiti hongere, te QoS whatunga, me ērā atu mea. Mō te whānui o te hononga kaiwhakamahi, mā te whakamahi i te hangarau waehere e whakamahia whānuitia ana, me 3 ~ 4Mbit / s te whānui o te hononga heke iho o te hononga kaiwhakamahi, ki te tuku ataata kounga teitei ake, he teitei ake hoki te whānui e hiahiatia ana; i te roa o te whakawhiti hongere, kia whakarite kia whakawhiti ngā kaiwhakamahi IPTV i waenga i ngā hongere rerekē me te whakawhiti pouaka whakaata noa i te mahi kotahi, ko te whakatinanatanga whānui o ngā ratonga IPTV me whai taputapu maha-urunga raina ohauru mamati (DSLAM) hei tautoko i te hangarau maha-whakaputa IP; mō te QoS whatunga, hei ārai i te ngaronga mōkihi, te wiri me ētahi atu pānga ki te kounga o te mātakitaki IPTV.
(2) Te whakataurite i te tikanga urunga WiMAX me te tikanga urunga DSL, Wi-Fi me te FTTx
Nā te mea he maha ngā herenga hangarau o te DSL, he maha tonu ngā raruraru e pā ana ki te tawhiti, te tere me te tere o te tuku. Ki te whakatauritea ki te DSL, ka taea e WiMAX te hipoki i tētahi rohe nui ake, te whakarato tere ake i ngā tere raraunga, te kaha ake ki te tauine me te kounga teitei ake o te QoS.
Ki te whakatauritea ki te Wi-Fi, he pai ake ngā painga hangarau o WiMAX, arā, he whānui ake te kapinga, he whānui ake te urutaunga o te roopu aho, he kaha ake te tauine, he teitei ake te QoS me te haumarutanga, me ētahi atu. Ko te Wi-Fi e hangai ana ki te paerewa Whatunga Rohe Ahokore (WLAN), ā, e whakamahia ana mō te urunga Ipurangi/Intranet tohatoha-tata ki roto, ki roto i ngā tari, ki ngā wāhi wera rānei; ko te WiMAX e hangai ana ki te paerewa Whatunga Rohe Tāone Ahokore (WMAN), e whakamahia ana mō te ratonga urunga raraunga tere-teitei i raro i te waea pūkoro pumau me te tere-iti.
Ko te FTTB+LAN, hei tikanga urunga whānui tere-tiketike, e whakahaere ana iIPTVratonga kāore he raruraru hangarau nui, engari he iti noa iho i te raruraru o te waea whakauru i roto i te whare, te utu tāutanga me te tawhiti tuku i puta mai i te taura takirua-whiri. Ko ngā āhuatanga tuku kore-raina-tirohanga pai rawa atu o WiMAX, te ngāwari o te whakatinanatanga me te whirihoranga tauine, te kounga ratonga QoS pai rawa atu me te haumarutanga kaha katoa e hanga ana hei tikanga urunga pai mō te IPTV.
(3) Ngā Painga o WiMAX mō te whakatinanatanga o te urunga ahokore ki te IPTV
Mā te whakataurite i a WiMAX ki te DSL, Wi-Fi me te FTTx, ka kitea ko WiMAX te kōwhiringa pai ake hei whakatutuki i te urunga IPTV. I te marama o Mei 2006, kua piki te tokomaha o ngā mema o te WiMAX Forum ki te 356, ā, neke atu i te 120 ngā kaiwhakahaere huri noa i te ao kua uru atu ki te whakahaere. Ko WiMAX te hangarau tino pai hei whakaoti i ngā raruraru whakamutunga o te IPTV. He pai ake hoki a WiMAX hei whakakapi i te DSL me te Wi-Fi.
(4) Te Whakatutukitanga o te Urunga IPTV ki WiMAX
Ko te paerewa IEEE802.16-2004 e aro nui ana ki ngā pūrua pumau, ko te tawhiti tuku mōrahi he 7~10km, ā, ko tōna awhe whakawhitiwhiti he iti iho i te 11GHz, e whakamahi ana i te tikanga hongere kōwhiringa, ā, ko te whānui o ia hongere kei waenga i te 1.25~20MHz. Ina he 20 MHz te whānui o te whānui, ka taea e te tere mōrahi o te IEEE 802.16a te eke ki te 75 Mbit/s, ko te tikanga he 40 Mbit/s; ina he 10 MHz te whānui, ka taea e ia te whakarato i te tere tuku toharite o te 20 Mbit/s.
Ka tautokohia e ngā whatunga WiMAX ngā tauira pakihi kanapa. Ko ngā ratonga raraunga o ngā tere rerekē te whāinga matua o te whatunga. Ka tautokohia e WiMAX ngā taumata QoS rerekē, nō reira he hononga tata te kapinga whatunga ki te momo ratonga. Mō te urunga IPTV, nā te mea me whai whakapumautanga QoS taumata teitei me ngā tere tuku raraunga tere teitei te IPTV. Nō reira ka whakatūhia te whatunga WiMAX kia rite ki te maha o ngā kaiwhakamahi i te rohe me ā rātou hiahia. Ina uru atu ngā kaiwhakamahi ki te whatunga IPTV, kāore he take ki te mahi waea anō, me tāpiri noa ngā taputapu whiwhi WiMAX me te pouaka IP, kia taea ai e ngā kaiwhakamahi te whakamahi i te ratonga IPTV me te watea me te tere.
I tēnei wā, he pakihi hou a IPTV, he nui te pūmanawa mākete, ā, kei te tīmatanga tonu tōna whanaketanga. Ko te ia o tōna whanaketanga ā muri ake nei ko te whakauru atu i ngā ratonga IPTV me ngā taunga, ā, ka noho te pouaka whakaata hei taunga kāinga mamati whānui me ngā mahi whakawhitiwhiti kōrero me te Ipurangi. Engari me whakatutuki e IPTV tētahi putanga nui i roto i te tikanga tūturu, ehara i te mea hei whakaoti rapanga ihirangi anake, engari hei whakaoti hoki i te aukati o te kiromita whakamutunga.
Wā tuku: Hakihea-05-2024