News Center

What is the difference between BBU and RRU ?

www.premier-cable.net


What is the difference between BBU and RRU ?


 
RRU  : Remote Radio Unit

 


BBU : Building Baseband Unit

 


The RRU is the remote radio frequency module of the Remote Radio Unit, and the BBU is the indoor baseband processing unit of the Building Baseband Unit.

 

The baseband BBU is centrally placed in the equipment room, and the RRU can be installed on the floor. 

 

Optical fiber is used for transmission between the BBU and the RRU. 

 

The RRU is then connected to the antenna through coaxial cables and power dividers (couplers), that is, the trunk uses optical fiber, and the branch uses the same fiber.  

 

For the downlink direction: the optical fiber is directly connected from the BBU to the RRU, and the baseband digital signal is transmitted between the BBU and the RRU, so that the base station can control the signal of a certain user to be transmitted from the designated RRU channel, which can greatly reduce the impact on other channels in the cell. 

 

For the uplink direction: the user's mobile phone signal is received by the channel closest to the distance, and then transmitted from this channel to the base station through the optical fiber, which can also greatly reduce the interference between users on different channels.

 


Premier Cable is a factory based in Dong Guan City to make cable for base station antennas, Remote Radio Unit,  Building Baseband Unit
 

 

We make Remote Radio Unit Cable ,  Building Baseband Unit Cable,   See more at  www.premier-cable.net 
 

 

Tel : 0086-0139-2949-7934

 

 
Skype : james198585 

 


Email :  James@premier-cable.net

 

 
Email :  sales@premier-cable-mfg.com

 

Related News


What is a terminal block used for?

While there are many factors to consider when designing an overall system, terminal blocks are an optimal solution for complex electrical system connections. With a variety of color options and configurations, Premier Cable’ terminal blocks offer a range of options to meet your design challenges.


CANBus Applications

CAN-bus has been widely used in various automation control systems. For example, CAN-bus has incomparable advantages in various fields such as automotive electronics, automatic control, smart buildings, power systems, and security monitoring.


Introduction to M12 connector pin coding

M12 encoding types are A encoding, B encoding, D encoding and X encoding. A-code, B-code and X-code are some of the earliest developed and longest-available M12 connectors. The latest M12 coding types currently under development are K coding for AC and L coding for PROFINET DC.


Cables – What are the correct cable sizes for an NMEA 2000 network?

The three different sizes of NMEA 2000 certified DeviceNet standard cabling are "micro," "mid," and "mini."


What are the advantages of NMEA 2000?

The Premier Cable Starter Kits provide everything you need to get to create a basic NMEA 2000 network from scratch.


The role of DeviceNet terminal resistor

DeviceNet_network is a fieldbus network protocol based on Controller Area Network (CAN). In the DeviceNet network, the terminal resistor plays the role of compensation and protection for signal transmission. The function of the terminal resistor is to eliminate signal reflection and interference and ensure the signal transmission quality.