Ndeupi musiyano uripo pakati pe5G base station system ne4G?

1. RRU neantenna zvakabatanidzwa (zvatoonekwa)

5G inoshandisa tekinoroji yeMassive MIMO (ona 5G Basic Knowledge Course for Busy People (6)-Massive MIMO: Muurayi Mukuru Chaiye we5G ne5G Basic Knowledge Course for Busy People (8)-NSA kana SA? Uyu mubvunzo unokosha kufunga nezvawo), antenna inoshandiswa ine ma transceiver akazvimirira akavakirwa mukati anosvika makumi matanhatu nemana.

Sezvo pasina nzira yekuisa mafeeder makumi matanhatu nemana pasi peantenna wobva warembera padanda, vagadziri vemidziyo ye5G vakasanganisa RRU neantenna kuita mudziyo mumwe chete-AAU (Active Antenna Unit).

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Sezvamunoona kubva pazita racho, A yekutanga muAAU inoreva RRU (RRU inoshanda uye inoda magetsi kuti ishande, nepo antenna iri passive uye inogona kushandiswa isina magetsi), uye AU yekupedzisira inoreva antenna.

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Chitarisiko cheAAU chakafanana neantenna yechinyakare. Pakati pemufananidzo uri pamusoro i5G AAU, uye kuruboshwe nekurudyi iantenna dzechinyakare dze4G. Zvisinei, kana ukabvisa AAU:

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Unogona kuona ma transceiver units akazara akazvimiririra mukati, hongu, nhamba yacho yese i64.

Tekinoroji yekutumira fiber ye optical pakati peBBU neRRU (AAU) yakagadziridzwa (yatoonekwa)

Muma network e4G, BBU neRRU dzinofanira kushandisa optical fiber kuti dzibatane, uye chiyero chekutumira masaini eredhiyo mu optical fiber chinonzi CPRI (Common Public Radio Interface).

CPRI inotumira data remushandisi pakati peBBU neRRU mu4G uye hapana chakaipa nazvo. Zvisinei, mu5G, nekuda kwekushandiswa kwetekinoroji dzakadai seMassive MIMO, kugona kwesero rimwe chete re5G kunogona kusvika kanopfuura kagumi pane 4G, izvo zvakaenzana neBBU neAAU. Mwero wedata reinter-transmission unofanirwa kusvika kanopfuura kagumi pane 4G.

Kana ukaramba uchishandisa tekinoroji yechinyakare yeCPRI, bandwidth ye optical fiber ne optical module ichawedzera nenguva dzeN, uye mutengo we optical fiber ne optical module uchawedzerawo kakawanda. Saka, kuitira kuchengetedza mari, vatengesi vemidziyo yekutaurirana vakavandudza protocol yeCPRI kuenda ku eCPRI. Kuvandudzwa uku kuri nyore kwazvo. Kutaura zvazviri, CPRI transmission node inotamiswa kubva pachikamu chekutanga che physical layer neredhiyo kuenda kuchikamu che physical layer, uye Chikamu che physical layer chekare chakakamurwa kuita chikamu chepamusoro che physical layer nechikamu che physical layer chakaderera.

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3. Kupatsanurwa kweBBU: kupatsanurwa kweCU neDU (hazvizogoneki kwenguva yakati)

Munguva ye4G, base station BBU ine mabasa ese ari maviri ekudzora (kunyanya pa main control board) uye mabasa e user plane ( main control board ne baseband board). Pane dambudziko:

Nzvimbo yega yega yedata inodzora kutumirwa kwayo uye inoshandisa maalgorithms ayo. Hapana kubatana pakati pezvinhu. Kana basa rekudzora, kureva basa rehuropi, rikabviswa, nzvimbo dzakawanda dzedata dzinogona kudzorwa panguva imwe chete kuti pave nekufambiswa kwakarongeka uye kupindirana. Kushanda pamwe chete, kushanda kwekutumira data kuchave kwakakwira here?

Mu network ye5G, tinoda kuzadzisa zvinangwa zvataurwa pamusoro apa nekupatsanura BBU, uye centralized control function ndiyo CU (Centralized Unit), uye base station ine separated control function inongosara chete yekugadzirisa nekutumira data. Basa racho rinova DU (Distributed Unit), saka 5G base station system inova:

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Pasi pemagadzirirwo apo CU neDU zvakaparadzaniswa, network yekutumira zvinhu yakagadziriswawo zvinoenderana. Chikamu chepamberi chakatamiswa pakati peDU neAAU, uye network yemidhaul yakawedzerwa pakati peCU neDU.

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Zvisinei, chinangwa chakazara, uye chokwadi chacho hachina kusimba. Kupatsanurwa kweCU neDU kunosanganisira zvinhu zvakaita sekutsigira maindasitiri, kuvakazve makamuri emakomputa, kutenga kwevashandisi, nezvimwewo. Hazvizoitiki kwenguva yakati. 5G BBU iripo ichiripo, uye haina chekuita ne4G BBU.

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Nguva yekutumira: Kubvumbi-01-2021