BBU–RRU
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Huawei

RRU3971

What it does: RF transmission / reception. TX / RX modes: 4T4R.

5 part numbers: 02311HKL= / 02311MUJ / 02311NCV …

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Main specifications

Technologies1800 MHz: GSM, LTE FDD, LTE NB-IoT and NR SUL; 1900 MHz: GSM, UMTS and LTE FDD; AWS: UMTS, LTE FDD and LTE NB-IoT; 2100 MHz: UMTS, LTE FDD and NR SUL
TX / RX modes4T4R
RF output powerRRU3971 (1800 MHz): 4 × 40 W; RRU3971 (1900 MHz): 4 × 40 W; RRU3971 (AWS): 4 × 40 W; RRU3971 (2100 MHz): 4 × 40 W
Interfaces / connectors2 CPRI ports; ALD port capability: ANT_A: RET/TMA; ANT_B: RET/TMA; ANT_C: TMA; ANT_D: TMA; RET port: RET/TMA
Interfaces and data rates2 CPRI ports, 1.25, 2.5, 4.9, or 9.8 Gbit/s, Star, chain, or dual- star; RET antenna control supports AISG 1.1/2.0; 12 V feeding voltage; 2.3 A feeding current
Power supply-48 V DC; voltage range: -36 V DC – -57 V DC
FamilyHuawei 3900 & 5900 Series Base Station RRU
Installation environmentOperating environment: ETSI EN 300019-1-4 V2.1.2 (2003-04) Class 4.1, "Non-weatherprotected locations".
IP ratingIP65
Additional technical information
Dimensions
400 mm x 300 mm x 100 mm (12 L, without the housing)
Weight
15 kg (without the housing)
Operating RF bands / ranges
PN 02311HKL; 02311HKL: 1800 MHz
For PN 02311HKL.
Uplink frequency
PN 02311HKL; 02311HKL: RX 1710–1785 MHz
For PN 02311HKL.
Downlink frequency
PN 02311HKL; 02311HKL: TX 1805–1880 MHz
For PN 02311HKL.
Bandwidth
IBW: 1800 MHz 45 MHz; AWS 70 MHz; 1900 MHz 40 MHz; 2100 MHz 60 MHz. LTE FDD carrier bandwidth: 5/10/15/20 MHz. From SRAN15.0, 1800-MHz LTE/NR uplink sharing: 15/20 MHz per LTE and NR carrier
Capacity
RRU3971 (1800 MHz): GSM: 8 carriers LTE FDD: 2 carriers. The bandwidth per carrier is 5, 10, 15, or 20 MHz. LTE NB-IoT: 8 carriers NR (SUL): 1 carrier; RRU3971 (1900 MHz): GSM: 8 carriers UMTS: 8 carriers LTE FDD: 2 carriers. The bandwidth per carrier is 5, 10, 15, or 20 MHz.; RRU3971 (AWS): UMTS: 8 carriers LTE FDD: 3 carriers. The bandwidth per carrier is 5, 10, 15, or 20 MHz. LTE NB-IoT: 1 carrier; RRU3971 (2100 MHz): UMTS: 8 carriers LTE FDD: 2 carriers. The bandwidth per carrier is 5, 10, 15, or 20 MHz. NR (SUL): 1 carrier
Synchronization
In mode CPRI: clock signal recovery from the incoming line; frame synchronization from REC
Chassis
Remote-radio enclosure/form factor; documented dimensions: 400 mm x 300 mm x 100 mm (12 L, without the housing); ingress protection: IP65
Modules
Fixed internal high-speed interface unit, signal-processing unit, power amplifier, duplexer, extension ports and power module; optional external AC/DC power module
Functional role
PN 02311HKL; Remote radio unit
For PN 02311HKL.
Architecture
Software-defined radio (SDR); operating mode is selected by software configuration
Subtype
PN 02311HKL; KUNLUN
For PN 02311HKL.
Details
Converts and amplifies RF/IF, multiplexes and filters RX/TX; built-in bias tees on RF ports A/B carry OOK and RF ports A-D provide DC TMA feed
Connection notes
BBU via CPRI

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