The Huawei DBS3900 is a distributed base station designed to provide high-performance, flexible mobile network coverage across multiple radio access technologies, including GSM, UMTS, and LTE. It is a key part of Huawei’s SingleRAN solution, offering a modular design where the baseband and radio components are separated to allow optimized deployment in a variety of physical environments. This architecture reduces feeder losses and enables easier site planning, particularly in urban, rural, or constrained environments.
The system consists of an indoor Baseband Unit (BBU3900) and one or more Remote Radio Units (RRUs), connected via fiber. This separation allows operators to mount RRUs close to antennas, improving signal quality and simplifying installation. The DBS3900 supports high throughput, fast call setup, and seamless mobility features while reducing energy consumption and site costs.
Its flexibility and energy-efficient design made the DBS3900 a popular choice for operators seeking to modernize existing sites or roll out new coverage with minimal infrastructure. Carritech supports telecom operators using the DBS3900 by sourcing and supplying BBUs, RRUs, interface modules, and power systems. All equipment is tested for quality and compatibility to ensure smooth integration into live networks.
Distributed Architecture: Separates baseband and RF processing for optimized deployment, better RF performance, and reduced infrastructure complexity.
Multi-Mode Operation: Supports GSM, UMTS, and LTE within the same platform, allowing smooth evolution from legacy to modern technologies.
High Capacity and Speed: Capable of delivering up to 100 Mbps downlink and 50 Mbps uplink in LTE mode, depending on bandwidth and RRU configuration.
Energy Efficiency: Features passive cooling on some RRUs and intelligent power management to reduce operational costs, especially in remote deployments.
Compact Design: RRUs are compact and lightweight, allowing pole, wall, or tower mounting; BBUs are rack-mounted and support up to 12 connected RRUs.
Wide Band Support: Available in a variety of frequency band options including 700 MHz, 800 MHz, 900 MHz, 1800 MHz, and 2100 MHz depending on regional requirements.
Carrier-Grade Reliability: Offers high availability, redundancy options, and intelligent fault management to ensure continuous operation in live networks.
Remote Management: Supports configuration and monitoring through Huawei’s centralized management platforms, with local or remote access for maintenance teams.
System Components:
BBU3900: Indoor baseband unit, 2U size, rack-mountable, supports multiple RATs and up to 12 RRUs.
RRUs: Outdoor radio units handling transmission and RF processing; available in single-, dual-, or tri-band configurations.
Supported Technologies:
GSM, UMTS, LTE
Evolution-ready for additional spectrum use or capacity expansion
Performance:
Up to 100 Mbps downlink and 50 Mbps uplink in LTE mode
Seamless mobility management across RATs and frequencies
High-speed coverage support up to 430 km/h
Connectivity:
Interfaces: CPRI for RRU connection, Ethernet/IP for transmission
Synchronization: GPS or IEEE 1588v2 supported
Power Supply:
BBU: -48 VDC, approx. 165W consumption
RRU: -48 VDC or optional AC with external conversion
Environmental Tolerance:
BBU Operating Temp: –20°C to +55°C
RRU Operating Temp: –40°C to +55°C
Humidity: Up to 95% non-condensing
RRU Ingress Protection: IP65-rated for outdoor use
Reliability:
System availability ≥ 99.999%
MTBF ≥ 155,000 hours
MTTR ≤ 1 hour
Mounting Options:
BBU: Indoor cabinet or telecom rack
RRU: Pole, wall, rooftop, or tower installation
Management Features:
Local craft terminal and remote network management
Supports SNMP and proprietary Huawei protocols
| Time Period | Brand / Company | Role / Notes |
|---|---|---|
| 2010 – 2016 | Huawei Technologies Co., Ltd. | Launched the DBS3900 as part of the SingleRAN platform, promoting flexible GSM, UMTS, and LTE deployment in urban and rural settings. |
| 2016 – Present | Huawei (Ongoing Support) | Continues to provide maintenance and software support to operators with existing DBS3900 infrastructure while newer platforms are rolled out. |
| Present (Secondary Market) | Independent Resellers & Support Specialists (e.g., Carritech) | Carritech supplies tested BBU and RRU units, along with spares and accessories, enabling operators to extend the operational life of DBS3900 deployments. |
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From expert maintenance and repair to reliable part sourcing and technical consultation, we provide comprehensive support for every stage of your network’s lifecycle. Whether you’re extending the life of legacy systems or integrating with modern infrastructure, our team ensures seamless, efficient, and cost-effective solutions—so you can focus on performance, not problems.