What are the slot installation rules for UBBPd1 in BBU3900/BBU3910 subracks?

UBBPd1 is a universal baseband board. In a BBU3900 subrack, it can be installed in Slots 0 to 3. In a BBU3910 subrack, it can be installed in Slots 0 to 5. Before insertion, verify that the main processing unit has configured the correct backplane bus routing.

What optical transceiver specifications are supported on UBBPd1 CPRI ports?

The board features 3 SFP optical ports supporting CPRI line rates from 1.25 Gbps up to 6.144 Gbps. When connecting to remote radio units (RRUs), use genuine industrial SFP transceivers (single-mode or multi-mode duplex LC) and verify optical budget margins.

How to troubleshoot when the ACT LED on the front panel is off or flashing?

A steady green ACT indicator confirms active data transmission. If the LED is off or blinking irregularly, verify the RUN LED status for board power and software loading, then inspect the transmission link status on the management controller to ensure firmware compatibility.

Huawei UBBPd1 Genuine Telecom Hardware Studio Photo 1

HuaweiModel: UBBPd1

Huawei UBBPd1 Universal Baseband Processing Unit Board (GSM/UMTS/LTE 3x CPRI Optical Ports)

Huawei UBBPd1 is a universal baseband processing unit board designed for BBU3900 and BBU3910 subracks, providing 3 CPRI ports supporting up to 6.144 Gbps for multi-RAT signal processing.

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Board Function Type: Universal Baseband Processing Unit (UBBPd1)
Supported RAT Modes: GSM / UMTS / LTE FDD & TDD
Transmission Interfaces: 3x CPRI Optical Ports (up to 6.144 Gbps)
Power Consumption: Typical 60W (Max 80W)
Subrack Compatibility: Huawei BBU3900 / BBU3910 Standard Slot
Operating Temperature: -20°C ~ +55°C

What this product is

A core baseband digital signal processing board for Huawei macro base stations and indoor wireless distribution systems.

What problem it solves

Eliminates baseband processing bottlenecks and enables smooth multi-carrier GSM/UMTS/LTE deployment within existing subracks.

Who and where it is for

Telecom operators, C-RAN hub sites, macro base station expansions, and private cellular networks.

Core advantages

Multi-mode GSM/UMTS/LTE cooperative baseband processing
3x high-speed CPRI optical ports up to 6.144 Gbps
Fully compatible with Huawei BBU3900 and BBU3910 subracks
Carrier-grade durability and wide temperature tolerance

Technical specifications

Key specifications	Value
Board Function Type	Universal Baseband Processing Unit (UBBPd1)
Supported RAT Modes	GSM / UMTS / LTE FDD & TDD
Transmission Interfaces	3x CPRI Optical Ports (up to 6.144 Gbps)
Power Consumption	Typical 60W (Max 80W)
Subrack Compatibility	Huawei BBU3900 / BBU3910 Standard Slot
Operating Temperature	-20°C ~ +55°C

Applications

LTE macro base station physical layer signal processing

Multi-RAT GSM/UMTS/LTE network upgrades

Centralized C-RAN baseband pooling architectures

Private mission-critical cellular communications

Frequently asked questions

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