Uthini umahluko phakathi kwenkqubo yesiseko se-5G kunye ne-4G
1. I-RRU kunye ne-eriyali ziyadityaniswa (sele ziqatshelwe)
I-5G isebenzisa itekhnoloji ye-Massive MIMO (jonga 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 okanye SA? Lo ngumbuzo ofanele ucinge ngawo? ), i-eriyali esetyenzisiweyo ineeyunithi ezizimeleyo ze-transceiver ezizimeleyo ukuya kwi-64.
Ekubeni ngokwenene akukho ndlela yokufaka i-64 feeders phantsi kwe-antenna kwaye ixhonywe kwisibonda, abavelisi bezixhobo ze-5G baye badibanisa i-RRU kunye ne-antenna kwisixhobo esinye-AAU (Iyunithi ye-Antenna esebenzayo).
Njengoko unokubona kwigama, i-A yokuqala kwi-AAU ithetha i-RRU (i-RRU iyasebenza kwaye idinga ukunikezelwa kwamandla ukuze isebenze, ngelixa i-eriyali ingasebenzi kwaye ingasetyenziswa ngaphandle kombane), kwaye i-AU yokugqibela ithetha i-antenna.
Ukubonakala kwe-AAU kukhangeleka njenge-eriyali yendabuko.Umbindi womfanekiso ongentla yi-5G AAU, kwaye ekhohlo nasekunene zii-eriyali zemveli ze-4G.Nangona kunjalo, ukuba uyaqhaqha i-AAU:
Unokubona iiyunithi ezixineneyo ezipakishweyo ezizimeleyo ze-transceiver ngaphakathi, ewe, inani lilonke ngama-64.
Itekhnoloji yokuhanjiswa kwefiber optical phakathi kwe-BBU kunye ne-RRU (AAU) iye yaphuculwa (sele ifunyenwe)
Kwiinethiwekhi ze-4G, i-BBU kunye ne-RRU kufuneka isebenzise i-fiber optical ukudibanisa, kunye ne-standard ye-radio frequency transmission standard kwi-fiber optical ibizwa ngokuba yi-CPRI (I-Common Public Radio Interface).
I-CPRI idlulisela idatha yomsebenzisi phakathi kwe-BBU kunye ne-RRU kwi-4G kwaye akukho nto iphosakeleyo ngayo.Nangona kunjalo, kwi-5G, ngenxa yokusetyenziswa kweeteknoloji ezifana ne-Massive MIMO, amandla e-5G iseli enye inokufikelela ngokusisiseko ngaphezu kwamaxesha e-10 ye-4G, elingana ne-BBU kunye ne-AAU.Ireyithi yedatha ye-inter-transmission kufuneka ifikelele ngaphezu kwamaxesha e-10 ye-4G.
Ukuba uqhubeka usebenzisa iteknoloji ye-CPRI yendabuko, i-bandwidth ye-fiber optical kunye nemodyuli ye-optical iya kwanda ngamaxesha e-N, kwaye ixabiso le-fiber optical kunye nemodyuli ye-optical iya kwandisa amaxesha amaninzi.Ngoko ke, ukuze kugcinwe iindleko, abathengisi bezixhobo zonxibelelwano baphucula i-CPRI protocol kwi-eCPRI.Olu hlaziyo lulula kakhulu.Enyanisweni, i-node yokudlulisa i-CPRI isuswa kwi-original layer ye-original kunye ne-radio frequency ukuya kwinqanaba lomzimba, kwaye I-traditional layer ye-physical layer yahlulwe ibe yi-high-level body layer and low-level physical layer.
3. Ukwahlulwa kwe-BBU: ukwahlukana kwe-CU kunye ne-DU (akunakwenzeka okwethutyana)
Ngexesha le-4G, isikhululo sesiseko se-BBU sinemisebenzi yomibini yokulawula indiza (ikakhulukazi kwibhodi yokulawula ephambili) kunye nemisebenzi yendiza yomsebenzisi (ibhodi yokulawula ephambili kunye nebhodi ye-baseband).Kukho ingxaki:
Isikhululo ngasinye esisisiseko silawula ukuhanjiswa kwedatha yaso kwaye siphumeza i-algorithms yaso.Kukho ngokusisiseko akukho lungelelwaniso kunye nomnye.Ukuba umsebenzi wokulawula, oko kukuthi, umsebenzi wengqondo, unokuthathwa ngaphandle, izikhululo ezininzi zesiseko zinokulawulwa ngexesha elifanayo ukufezekisa ukuhanjiswa okulungelelanisiweyo kunye nokuphazamiseka.Ukusebenzisana, ngaba ukuhanjiswa kwedatha ngempumelelo kuya kuba phezulu kakhulu?
Kwinethiwekhi ye-5G, sifuna ukufezekisa ezi njongo zingasentla ngokuhlukanisa i-BBU, kwaye umsebenzi wokulawula i-centralized yi-CU (iYunithi yeCentralized), kunye nesikhululo esisisiseko esinomsebenzi wokulawula ohlukeneyo sishiywe kuphela ukusetyenzwa kwedatha kunye nokuhanjiswa.Umsebenzi uba yi-DU (iYunithi eSasazwe), ngoko ke inkqubo yesikhululo sesiseko se-5G ibe:
Ngaphantsi koyilo lwezakhiwo apho i-CU kunye ne-DU zihlulwe khona, inethiwekhi yokuhanjiswa nayo iye yahlengahlengiswa ngokufanelekileyo.Inxalenye ye-fronthaul ihanjiswe phakathi kwe-DU kunye ne-AAU, kwaye inethiwekhi ye-midhaul yongezwa phakathi kwe-CU kunye ne-DU.
Nangona kunjalo, okufanelekileyo kugcwele kakhulu, kwaye inyaniso iyancipha kakhulu.Ukwahlulwa kwe-CU kunye ne-DU kubandakanya izinto ezifana nenkxaso ye-industrial chain, ukwakhiwa kwakhona kwegumbi lekhompyutha, ukuthengwa kwabaqhubi, njl.I-5G BBU yangoku isanje, kwaye ayinanto yakwenza ne-4G BBU.
Ixesha lokuposa: Apr-01-2021