He aha te rerekētanga i waenga i te pūnaha teihana turanga 5G me te 4G
1. Kua whakauruhia te RRU me te pūihi (kua oti kē te whakatinana)
Ka whakamahia e te 5G te hangarau Massive MIMO (tirohia te Akoranga Mātauranga Taketake 5G mō te Hunga Pukumahi (6)-Masive MIMO: Te Kaikōhuru Nui Tuturu o te 5G me te Akoranga Mātauranga Taketake 5G mō te Hunga Pukumahi (8)-NSA, SA rānei? He pātai tēnei hei whakaaroaro), kei roto i te pūihi e whakamahia ana ngā waeine whakawhiti motuhake kua hangaia ki roto tae atu ki te 64.
I te mea kāore rawa he huarahi hei whakauru i ngā whāngai 64 ki raro i te pūihi me te whakairi ki te pou, kua whakakotahi ngā kaihanga taputapu 5G i te RRU me te pūihi ki roto i te taputapu kotahi - AAU (Active Antenna Unit).
E kitea ana i te ingoa, ko te A tuatahi i roto i te AAU ko te tikanga o te RRU (he kaha te RRU, ā, me whai pūtake hiko kia mahi, ko te pūihi ia he kore mahi, ā, ka taea te whakamahi me te kore pūtake hiko), ā, ko te AU tuarua ko te tikanga o te pūihi.
He rite tonu te āhua o te AAU ki tētahi pūihi tuku iho. Ko waenganui o te pikitia i runga ake nei ko te AAU 5G, ā, ko te taha maui me te taha matau ko ngā pūihi tuku iho 4G. Heoi, ki te wetewetehia te AAU:
Ka taea e koe te kite i ngā waeine whakawhiti motuhake kapi tonu i roto, ko te tapeke he 64.
Kua whakapai ake (kua oti kē te whakatinana) te hangarau tuku muka whatu i waenga i te BBU me te RRU (AAU)
I roto i ngā whatunga 4G, me whakamahi te BBU me te RRU i te muka whatu hei hono atu, ā, ko te paerewa tuku tohu auau reo irirangi i roto i te muka whatu e kiia ana ko te CPRI (Common Public Radio Interface).
Ka tukuna e te CPRI ngā raraunga kaiwhakamahi i waenga i te BBU me te RRU i roto i te 4G, ā, kāore he he o taua mea. Heoi, i roto i te 5G, nā te whakamahinga o ngā hangarau pēnei i te Massive MIMO, ka taea e te kaha o te pūtau kotahi 5G te neke atu i te 10 ngā wā i tō te 4G, he rite ki te BBU me te AAU. Me neke atu i te 10 ngā wā i tō te 4G te tere raraunga whakawhiti.
Ki te whakamahi tonu koe i te hangarau CPRI tuku iho, ka piki ake te whānui o te muka whatu me te waeine whatu mā te N ngā wā, ā, ka piki ake hoki te utu o te muka whatu me te waeine whatu i ngā wā maha. Nō reira, hei penapena utu, i whakahoutia e ngā kaihoko taputapu whakawhitiwhiti te kawa CPRI ki te eCPRI. He tino māmā tēnei whakahoutanga. Inaa, ka nekehia te pūnga tuku CPRI mai i te paparanga tūturu me te auau reo irirangi taketake ki te paparanga tūturu, ā, ka wehea te paparanga tūturu tuku iho ki te paparanga tūturu taumata-tiketike me te paparanga tūturu taumata-iti.
3. Te wehenga o te BBU: te wehenga o te CU me te DU (kāore e taea mō tētahi wā)
I te wā 4G, kei te teihana turanga BBU ngā mahi papa whakahaere (kei runga i te papa whakahaere matua te nuinga) me ngā mahi papa kaiwhakamahi (papa whakahaere matua me te papa turanga). He raruraru tēnei:
Ko ia teihana turanga te kaiwhakahaere i tana ake tuku raraunga, ā, ko ia ake rauropi te kaiwhakahaere. Kāore he mahi tahi tetahi ki tetahi. Mena ka taea te tango i te mahi whakahaere, arā, te mahi a te roro, ka taea te whakahaere i ngā teihana turanga maha i te wā kotahi hei whakatutuki i te tuku me te pokanoa kua whakaritea. Mā te mahi tahi, ka nui ake te pai o te tuku raraunga?
I roto i te whatunga 5G, e hiahia ana mātou ki te whakatutuki i ngā whāinga o runga ake nei mā te wehewehe i te BBU, ā, ko te mahi whakahaere pokapū ko te CU (Wāhanga Matua), ā, ko te teihana turanga me te mahi whakahaere wehe ka waiho noa mō te tukatuka me te tuku raraunga. Ka huri te mahi hei DU (Wāhanga Tohatoha), nō reira ka huri te pūnaha teihana turanga 5G hei:
I raro i te hoahoa e wehea ana te CU me te DU, kua whakatikatikaina hoki te whatunga tuku. Kua nekehia te wāhanga fronthaul i waenga i te DU me te AAU, ā, kua tāpirihia te whatunga midhaul i waenga i te CU me te DU.
Heoi, he tino kī tonu te whakaaro nui, ā, he tino kikokore te mooni. Ko te wehenga o te CU me te DU e uru ana ki ngā āhuatanga pēnei i te tautoko mekameka ahumahi, te hanga anō i te rūma rorohiko, te hoko kaiwhakahaere, me ētahi atu. Kāore e tutuki mō tētahi wā. Kei te pēnei tonu te 5G BBU o nāianei, ā, kāore he pānga ki te 4G BBU.
Wā tuku: Paenga-whāwhā-01-2021