BBU–RRU
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Huawei board category illustration
Illustration
Huawei

LBBPd

What it does: LTE signal processing. Interfaces and data rates: 6 × CPRI 1.25/2.5/4.9/6.144/9.8 Gbit/s; star/chain/ring; HEI for combining baseband-resources.

2 part numbers: 03021HPH= / 03021HPJ=

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Main specifications

FamilyBBU3900
SlotsBBU3900, LTE FDD, one BBU: 3 > 0 > 1 > 2 > 4 > 5
CapacityMaximum homogeneous configurations: d1 LTE FDD — 3 × 20 MHz 1T1R/1T2R/2T2R; d2 FDD — 3 × 20 MHz 1T1R/1T2R/2T2R/2T4R/4T4R, TDD — 3 × 20 MHz 2T2R/4T4R; d3 FDD — 6 × 20 MHz 1T1R/1T2R/2T2R (at CPRI 20–40 km maximum 3 × 20 MHz 2T2R); d4 TDD — 3 × 20 MHz 8T8R
SynchronizationIntegrated clock unit, linked to backplane BBU
ChassisBBU3900
ModulesIntegrated functional processing units baseband, switching, service interface and synchronization; swappable CPRI SFP
Functional roleProcessing baseband UL/DL and communication with radio modules via CPRI
Interfaces / connectors6 × SFP CPRI; 1 × QSFP HEI
Interfaces and data rates6 × CPRI 1.25/2.5/4.9/6.144/9.8 Gbit/s; star/chain/ring; HEI for combining baseband-resources
Power supply+12 V DC from backplane when installed in BBU3900 s UPEUa/UPEUc/UPEUd
Additional technical information
Installation environment
In a BBU3900 slot
Technologies
LTE FDD/TDD (by variant d1–d4)
Bandwidth
LTE FDD, d1/d2/d3: 1.4/3/5/10/15/20 MHz; LTE TDD, d2: 5/10/15/20 MHz, d4: 10/20 MHz
Architecture
Replaceable baseband-board: signaling processing and UL/DL, CPRI, internal switching, service and clock units; connection via backplane BBU
Subtype
Main processing board bands LTE
Details
CPRI Sharing; LTE FDD: d1/d3 do not mix 1R/4R and 2R/4R; d2 supports these combinations, maximum 3 cells
Connection notes
Radio units via CPRI

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