Uyini umehluko phakathi kwesistimu yesiteshi se-5G ne-4G
1. I-RRU kanye ne-antenna kuhlanganisiwe (sekubonile kakade)
I-5G isebenzisa ubuchwepheshe be-Massive MIMO (bona i-5G Basic Knowledge Course for Busy People (6)-Massive MIMO: The Real Big Killer of 5G and 5G Basic Knowledge Course for Busy People (8)-NSA noma SA? Lona Umbuzo okufanele ucatshangwe ngawo? ), uthi olusetshenzisiwe lunamayunithi azimele azimele afika ku-64.
Njengoba ingekho ngempela indlela yokufaka iziphakeli ezingama-64 ngaphansi kwe-antenna bese ulenga esigxotsheni, abakhiqizi bemishini ye-5G bahlanganise i-RRU kanye ne-antenna kwaba yidivayisi eyodwa-AAU (Iyunithi Ye-Antenna Esebenzayo).
Njengoba ungabona egameni, u-A wokuqala ku-AAU usho ukuthi i-RRU (i-RRU iyasebenza futhi idinga ukunikezwa kwamandla ukuze isebenze, kuyilapho ithiyo ingasebenzi futhi ingasetshenziswa ngaphandle kokunikezwa kwamandla), kanti i-AU yakamuva isho uthi.
Ukubonakala kwe-AAU kubukeka njengothi lwendabuko.Maphakathi nesithombe esingenhla yi-5G AAU, kanti kwesokunxele nakwesokudla kukhona izimpondo zendabuko ze-4G.Nokho, uma uqaqa i-AAU:
Ungabona amayunithi e-transceiver aminyene agcwele ngaphakathi, vele, inani eliphelele lingama-64.
Ubuchwepheshe bokudlulisa i-fiber optical phakathi kwe-BBU ne-RRU (AAU) sebuthuthukisiwe (sebuvele wenziwe)
Kumanethiwekhi e-4G, i-BBU ne-RRU badinga ukusebenzisa i-optical fiber ukuze baxhume, futhi izinga lokudlulisa isignali yefrikhwensi yomsakazo ku-fiber optical libizwa ngokuthi i-CPRI (Common Public Radio Interface).
I-CPRI idlulisela idatha yomsebenzisi phakathi kwe-BBU ne-RRU ku-4G futhi akukho lutho olungalungile ngayo.Kodwa-ke, ku-5G, ngenxa yokusetshenziswa kobuchwepheshe obufana ne-Massive MIMO, amandla eseli elilodwa le-5G angafinyelela ngokuyisisekelo izikhathi ezingaphezu kwe-10 kune-4G, elingana ne-BBU ne-AAU.Izinga ledatha lokudluliswa okuphakathi kufanele lifinyelele izikhathi ezingaphezu kweziyi-10 kune-4G.
Uma uqhubeka nokusebenzisa ubuchwepheshe be-CPRI bendabuko, umkhawulokudonsa we-fiber optical kanye ne-optical module uzokwanda ngezikhathi ze-N, futhi intengo ye-fiber optical kanye ne-optical module izophinde ikhule izikhathi eziningana.Ngakho-ke, ukuze kugcinwe izindleko, abathengisi bemishini yokuxhumana bathuthukise iphrothokholi ye-CPRI yaba yi-eCPRI.Lokhu kuthuthukiswa kulula kakhulu.Eqinisweni, i-CPRI transmission node isuswa kungqimba lokuqala lomzimba kanye nemvamisa yomsakazo iye kwesendlalelo somzimba, futhi Isendlalelo somzimba esivamile sihlukaniswe sibe yizinga eliphezulu lomzimba kanye nesendlalelo somzimba esisezingeni eliphansi.
3. Ukuhlukaniswa kwe-BBU: ukuhlukaniswa kwe-CU ne-DU (ngeke kwenzeke okwesikhashana)
Esikhathini se-4G, isiteshi sesisekelo se-BBU sinokubili imisebenzi yendiza yokulawula (ikakhulukazi ebhodini eliyinhloko lokulawula) kanye nemisebenzi yendiza yomsebenzisi (ibhodi lokulawula eliyinhloko nebhodi le-baseband).Kunenkinga:
Isiteshi ngasinye esiyisisekelo silawula ukudluliswa kwedatha yaso futhi sisebenzisa ama-algorithms aso.Ngokuyisisekelo akukho ukusebenzisana komunye nomunye.Uma umsebenzi wokulawula, okungukuthi, umsebenzi wobuchopho, ungakhishwa, iziteshi eziningi zesisekelo zingalawulwa ngesikhathi esifanayo ukuze kuzuzwe ukudluliswa okuhlanganisiwe nokuphazamiseka.Ukubambisana, ingabe ukusebenza kahle kokudluliswa kwedatha kuzoba phezulu kakhulu?
Kunethiwekhi ye-5G, sifuna ukufeza lezi zinhloso ezingenhla ngokuhlukanisa i-BBU, futhi umsebenzi wokulawula okuphakathi yi-CU (Centralized Unit), futhi isiteshi esiyisisekelo esinomsebenzi wokulawula ohlukanisiwe sishiywe kuphela ukucubungula nokudlulisa idatha.Umsebenzi uba yi-DU (Distributed Unit), ngakho-ke uhlelo lwesiteshi sesisekelo se-5G luba:
Ngaphansi kwesakhiwo lapho i-CU ne-DU zihlukaniswa khona, inethiwekhi yokudlulisela nayo iye yalungiswa ngokufanele.Ingxenye ye-fronthaul ihanjiswe phakathi kwe-DU ne-AAU, futhi inethiwekhi ye-midhaul yengeziwe phakathi kwe-CU ne-DU.
Kodwa-ke, okuhle kugcwele kakhulu, futhi iqiniso lincane kakhulu.Ukuhlukaniswa kwe-CU ne-DU kuhilela izici ezifana nokusekelwa kochungechunge lwezimboni, ukwakhiwa kabusha kwegumbi lekhompyutha, ukuthengwa kwama-opharetha, njll. Ngeke kwenzeke okwesikhashana.I-5G BBU yamanje isenje, futhi ayihlanganise lutho ne-4G BBU.
Isikhathi sokuthumela: Apr-01-2021