Ndeupi musiyano uripo pakati pe5G base station system ne4G
1. RRU uye antenna zvakabatanidzwa (zvatoitika)
5G inoshandisa Massive MIMO tekinoroji (ona 5G Basic Knowledge Course yeVanhu Vakabatikana (6) -Massive MIMO: The Real Big Killer ye5G uye 5G Basic Knowledge Kosi yeVanhu Vakabatikana (8)-NSA kana SA? Uyu Mubvunzo wakakodzera kufunga nezvawo. ), antenna inoshandiswa yakavaka-mukati yakazvimirira transceiver units anosvika makumi matanhatu nemana.
Sezvo pasina chaizvo nzira yekuisa 64 feeder pasi peantenna uye kurembera padanda, 5G vagadziri vemidziyo vakabatanidza RRU neantenna kuita chimwe chinhu-AAU (Active Antenna Unit).
Sezvauri kuona kubva pazita, yekutanga A muAAU inoreva RRU (RRU inoshanda uye inoda magetsi kuti ishande, nepo antenna isingaite uye inogona kushandiswa pasina magetsi), uye yekupedzisira AU inoreva antenna.
Kuonekwa kweAAU kunotaridzika senge antenna yechinyakare.Pakati pemufananidzo uri pamusoro ndeye 5G AAU, uye kuruboshwe nekurudyi kune 4G yechinyakare antennas.Nekudaro, kana iwe ukaparadzanisa iyo AAU:
Iwe unogona kuona iyo yakazara yakarongedzerwa yakazvimirira transceiver units mukati, hongu, iyo yakazara nhamba i64.
Iyo optical fiber transmission tekinoroji pakati peBBU neRRU (AAU) yakakwidziridzwa (yakatoitika)
Mune 4G network, BBU neRRU inoda kushandisa optical fiber kubatanidza, uye redhiyo frequency signal transmission standard mu optical fiber inonzi CPRI (Common Public Radio Interface).
CPRI inotumira data remushandisi pakati peBBU neRRU mu4G uye hapana chakaipa nazvo.Nekudaro, mu5G, nekuda kwekushandisa matekinoroji akadai seMassive MIMO, kugona kwe5G sero rimwe chete kunogona kusvika kanopfuura kagumi kune ye4G, iyo yakaenzana neBBU neAAU.Nhamba ye data ye inter-transmission inofanira kusvika kudarika 10 nguva iyo ye4G.
Kana iwe ukaramba uchishandisa tsika yeCPRI teknolojia, bandwidth ye optical fiber uye optical module ichawedzera neN nguva, uye mutengo we optical fiber uye optical module uchawedzerawo kakawanda.Nokudaro, kuitira kuchengetedza mari, vatengesi vemidziyo yekukurukurirana vakavandudza CPRI protocol kuCPRI.Iyi kusimudzira iri nyore kwazvo.Muchokwadi, iyo CPRI transmission node inotamiswa kubva kune yekutanga yemuviri layer uye redhiyo frequency kuenda kune yemuviri layer, uye Iyo yechinyakare yemuviri layer yakakamurwa kuva yakakwirira-yepamusoro yemuviri dhizaini uye yakaderera-yepamusoro yemuviri layer.
3. Kupatsanurwa kweBBU: kupatsanurwa kweCU neDU (hazvizogoneke kwekanguva)
Munguva ye4G, iyo base station BBU ine zvese zvekutonga ndege mabasa (kunyanya pane main control board) uye yevashandisi ndege mabasa (main control board uye baseband board).Pane dambudziko:
Imwe neimwe base station inodzora yayo yekufambisa data uye inoshandisa yayo algorithms.Iko hakuna kurongeka kune mumwe nemumwe.Kana iyo yekudzora basa, ndiko kuti, basa rehuropi, rinogona kutorwa kunze, akawanda base zviteshi zvinogona kudzorwa panguva imwe chete kuti iwane kurongeka kwekutapurirana uye kupindira.Kudyidzana, iko kufambiswa kwedata kuchave kwakakwira zvakanyanya?
Mune network ye5G, tinoda kuzadzisa zvinangwa zviri pamusoro nekutsemura BBU, uye iyo centralized control function ndiyo CU (Centralized Unit), uye base station ine iyo yakapatsanurwa yekudzora basa inongosara yekugadzirisa data uye kutapurirana.Basa racho rinova DU (Distributed Unit), saka iyo 5G base station system inova:
Pasi pekuvaka uko CU neDU zvakapatsanurwa, network yekutumira yakagadziridzwawo saizvozvo.Chikamu chekumberi chakafambiswa pakati peDU neAAU, uye midhaul network yakawedzerwa pakati peCU neDU.
Nekudaro, iyo yakanaka izere kwazvo, uye chokwadi chakaonda kwazvo.Kupatsanurwa kweCU neDU kunosanganisira zvinhu zvakaita serutsigiro rweketani yemaindasitiri, kuvakazve imba yemakomputa, kutenga opareta, nezvimwe. Izvo hazvizozadzikiswa kwechinguva.Iyo yazvino 5G BBU ichiri seizvi, uye haina chekuita ne4G BBU.
Nguva yekutumira: Kubvumbi-01-2021