Yini isiteshi esiyisisekelo
Eminyakeni yamuva, izindaba ezinjengalezi bezilokhu zivela njalo ngemva kwesikhashana:
Abanikazi bezindawo zokuhlala baphikisana nokwakhiwa kweziteshi eziyisisekelo futhi basika izintambo ezibonakalayo ngasese, futhi opharetha abathathu abakhulu basebenza ndawonye ukuze badilize zonke iziteshi eziyisisekelo epaki.
Ngisho nakubahlali abavamile, namuhla, lapho i-intanethi yeselula ingene kuzo zonke izici zokuphila, bayoba nomqondo ovamile ovamile: izimpawu zomakhalekhukhwini zikhishwa iziteshi eziyisisekelo.Ngakho-ke isiteshi esiyisisekelo sibukeka kanjani?
Uhlelo oluphelele lwesiteshi sesisekelo lwakhiwe i-BBU, i-RRU kanye nohlelo lwe-antenna feeder (i-antenna).
Phakathi kwazo, i-BBU (Base band Unite, baseband processing unit) iyimishini eyinhloko esiteshini sesisekelo.Ivamise ukubekwa egunjini lekhompiyutha elicashile futhi alinakubonwa izakhamuzi ezivamile.I-BBU inesibopho sokucubungula ukusayinda kanye nedatha yenethiwekhi eyinhloko nabasebenzisi.Izivumelwano eziyinkimbinkimbi kakhulu kanye ne-algorithms kwezokuxhumana ngeselula zonke zenziwa ku-BBU.Kungashiwo ukuthi isiteshi esiyisisekelo yi-BBU.
Ngokombono wokubukeka, i-BBU ifana kakhulu nebhokisi eliyinhloko lekhompiyutha yedeskithophu, kodwa empeleni, i-BBU ifana neseva ezinikezele (kunokuba iseva yekhompiyutha yenhloso evamile).Imisebenzi yayo eyinhloko ibonakala ngezinhlobo ezimbili.Amabhodi okhiye atholwa yibhodi lokulawula eliyinhloko kanye nebhodi le-baseband.
Isithombe esingenhla wuhlaka lwe-BBU.Kungabonakala ngokucacile ukuthi kunezikhala eziyi-8 ezifana nekhabethe kuhlaka lwe-BBU, futhi ibhodi eliyinhloko lokulawula kanye nebhodi le-baseband lingafakwa kulezi zikhala, kanye nohlaka lwe-BBU Amabhodi amaningana okulawula amakhulu namabhodi e-baseband adinga ukufakwa, ikakhulukazi. kuye ngezidingo zomthamo wesiteshi esiyisisekelo okufanele sivulwe.Uma kufakwa amabhodi amaningi, umthamo wesiteshi esiyisisekelo uba mkhulu, futhi abasebenzisi abaningi banganikezwa ngesikhathi esifanayo.
Ibhodi lokulawula eliyinhloko linomthwalo wemfanelo wokucubungula ukusayinda (ukusayinda kwe-RRC) kusuka kunethiwekhi eyinhloko kanye neselula yomsebenzisi, inesibopho sokuxhumanisa nokuxhumana nenethiwekhi ewumgogodla, futhi inesibopho sokuthola ulwazi lokuvumelanisa lwe-GPS nolwazi lokuma.
I-RRU (Remote Radio Unit) yafakwa ohlakeni lwe-BBU ekuqaleni.Ngaphambilini ibibizwa nge-RFU (Radio Frequency Unit).Isetshenziselwa ukuguqula isignali ye-baseband edluliselwa isuka ebhodini le-baseband ngefiber optical ibe ibhendi yefrikhwensi yomnikazi we-opharetha.Isignali yefrikhwensi ephezulu idluliswa ku-antenna ngesiphakeli.Kamuva, ngenxa yokuthi ukulahlekelwa kokudluliswa kwe-feeder kutholakale kukhulu kakhulu, uma i-RFU ishumekwe kuhlaka lwe-BBU futhi ibekwe ekamelweni lomshini, futhi i-antenna ilengiswe embhoshongweni oqhelile, ibanga lokudlulisela i-feeder likude kakhulu futhi ukulahlekelwa. inkulu kakhulu, ngakho vele ukhiphe i-RFU.Sebenzisa i-optical fiber (i-optical fibre transmission loss incane) ukuze ilenge embhoshongweni kanye ne-antenna, ngakho iba i-RRU, okuyiyunithi yomsakazo oqhelile.
Okokugcina, uthi olubonwa yiwo wonke umuntu kaningi emigwaqweni nasezindleleni zedolobha luthi oludlulisa isignali engenantambo.Amayunithi e-transceiver azimele akhelwe kakhulu e-LTE noma i-antenna ye-5G, kulapho kungathunyelwa khona idatha eyengeziwe. ngesikhathi esifanayo, futhi izinga lokudluliswa kwedatha likhulu.
Kuma-antenna e-4G, kufika kumayunithi angu-8 azimele we-transceiver angabonakala, ngakho-ke kukhona ukuxhumana okuyisi-8 phakathi kwe-RRU kanye ne-antenna.Izixhumi ezibonakalayo ezingu-8 ngaphansi kwe-RRU yeziteshi ezingu-8 zingabonakala ngokucacile esithombeni esingenhla, kuyilapho isibalo esingezansi sibonisa I-antenna eneziteshi ezingu-8 enezindawo zokuhlangana eziyi-8.
Izixhumi ezibonakalayo eziyisi-8 ku-RRU zidinga ukuxhunywa ku-interfaces engu-8 ku-antenna ngokusebenzisa iziphakeli ezingu-8, ngakho-ke intambo yezintambo ezimnyama ingabonakala ngokuvamile esigxotsheni se-antenna.
Isikhathi sokuthumela: Apr-01-2021