All You Need to Know About BBU Cables
In the construction and operation of 4G/5G communication base stations, BBU (Baseband Unit) cables are the "nerves and blood vessels" of the entire system. They not only provide stable power supply for the BBU, but also handle high-speed data transmission, precise clock synchronization, and equipment status monitoring. Serving as the key link connecting the BBU to the RRU, transmission network, and environment monitoring system, they are widely used in indoor communication rooms, outdoor integrated base stations, 5G macro stations, and distributed base stations, supporting all mobile communication services such as voice calls, data access, and the Internet of Things.
I. Three Core Categories of BBU Cables
Based on their functions and applications, BBU cables can be clearly divided into three categories, each playing an indispensable role:
- CPRI Optical Fiber: Responsible for high-speed service data transmission between the BBU and RRU, serving as the core channel for carrying base station services.
- Power Cables: Provide stable DC power supply for the BBU to ensure continuous and stable operation of the equipment.
- Base Station Low-Voltage Signal Control Cables: Cover service signal transmission, clock synchronization, and environment monitoring, acting as auxiliary control cables to guarantee efficient and reliable operation of the base station.
II. Typical Model Examples for Each Category
1. CPRI Optical Fiber
Typical Model Example: Huawei CPRI Fiber Optic Cable (LC-LC, 2-core Single-mode)
Designed specifically for CPRI/eCPRI interfaces between BBU and RRU, this fiber adopts 9/125μm single-mode fiber core with LC duplex connectors, supporting 4G CPRI and 5G eCPRI protocol transmission. For outdoor scenarios, armored field cables with ODC waterproof connectors (IP67-rated) are often used, which can adapt to complex outdoor environments, effectively resisting moisture, dust, and mechanical damage to ensure stable transmission of base station services.
2. Power Cables
Typical Model Example: Huawei BBU5900 -48V DC Power Cable (25mm², OT Terminal)
Specifically designed for Huawei BBU5900 series baseband units, this cable uses 25mm² multi-strand copper conductors with OT crimp terminals, which can be directly connected between the DC power cabinet and the BBU equipment to transmit -48V DC power. With low impedance and high current-carrying capacity, it meets the requirements of long-term stable power supply for base station equipment, while featuring excellent flame retardancy and aging resistance.
3. Base Station Low-Voltage Signal Control Cables
Typical Model Example: Nokia 472510A FTSE GPS Cable
This cable is a dedicated GPS/GLONASS clock synchronization line for Nokia FSMF/FLEXI series base station BBU equipment. It features a 3-core copper cable structure, with one end using a FTSE-specific interface to connect to the BBU synchronization module and the other end using a waterproof circular connector to connect to the outdoor GPS/GLONASS mushroom antenna. The standard length is 30 meters. Designed for base station scenarios, the cable has low-loss transmission and high electromagnetic shielding performance, enabling stable transmission of timing signals in complex electromagnetic environments. It provides high-precision time synchronization references for 4G LTE and 5G NR networks, serving as a key component to ensure inter-base station coordination and stable network operation.
III. Common BBU Cable Model References
In addition to the examples above, mainstream BBU cable models in the industry include:
- ZTE BBU 8200 8300 48V DC Power Cable
- Huawei BBU Power Cable For Huawei 5900
- Huawei MA5200F-2000 MA5200F DC Cable
- Ericsson RPM 777 526/02500 BBU6630 power cables
- BBU-RRU SM FIBER ZTE CPRI CABLE / Fiber Optic Cable
- Ericsson RPM 777 528/02500 BBU6630 6620 6645 power cables
- Huawei BBU/RRU AISG Cable RET SYSTEM connectors AISG to DB9 mt. 5
- Huawei BBU power Cable for MA5680T / 5683T / OSN2500 / OSN3500
- Ericsson BBU DC Power Cable , RRU DC Jumper Cable For Base Band Cabinet
- Outdoor BBU to RRU CPRI 7.0mm Single Mode G657A2 Duplex LC Connector IP67 Fiber Optic Patch Cord（RPM 777 253、14130645....）
etc.
IV. BBU Cable Services from Skyward Telecom
As a professional communication equipment distributor, Skyward Telecom can provide a full range of brand-new original BBU cables, covering major brands such as Huawei, Nokia, Ericsson, and ZTE. Our product line includes CPRI optical fibers, DC power cables, GPS feeders, alarm cables, and AISG control cables, all of which meet communication industry standards with reliable quality. We also support customized BBU cable services, offering personalized cable solutions based on your equipment models, length requirements, connector types, and application scenarios to meet the special needs of different base station deployments.
