@Laden Ahmed Aljaafari
#BBU Components
Baseband Unit (BBU)
@Laden Ahmed Aljaafari
#BBU Components
❑In a telecommunications RAN, the Baseband Unit (BBU) plays a
crucial role in managing and processing everything on the Base
Station .
❑The BBU consists of several components that work together to
ensure seamless communication and efficient operation.
❑In this document, we will explore some of the key components,
and boards of a BBU and their functions.
Baseband Unit (BBU)
@Laden Ahmed Aljaafari
#BBU Board
Backplane
@Laden Ahmed Aljaafari
#BBU Board
Backplane
Backplane:
❑The backplane of a Baseband Unit (BBU) serves as a physical
platform that enables the interconnection of various modules
within the BBU system.
❑ It provides a communication pathway for data transfer,
power distribution, and control signals among the different
components of the BBU.
❑ The backplane plays a crucial role in ensuring smooth and
efficient operation of the BBU.
@Laden Ahmed Aljaafari
#BBU Board
UMPT Card
@Laden Ahmed Aljaafari
#BBU Board
UMPT Card
UMPT (Universal Main Processing and Transmission Unit):
❑Manages configurations and devices, monitors performance,
and processes signaling of a base station.
❑ Processes signaling and manages resources for other boards
in the BBU.
❑Provides a USB port, transmission ports, and a maintenance
port, which are used for automatic software upgrade, signal
transmission, and LMT- or U2000-based BBU maintenance
@Laden Ahmed Aljaafari
#BBU Cards
UBBP Card
@Laden Ahmed Aljaafari
#BBU Cards
UBBP Card
UBBP (Universal Baseband Processing Unit):
❑Provides CPRI ports for communication with RF modules.
❑Processes uplink and downlink baseband signals.
❑Supports the multiplex of baseband resources among baseband
resources among different modes, thereby different modes,
thereby implementing multimode concurrency.
@Laden Ahmed Aljaafari
#BBU Board
USCU Card
@Laden Ahmed Aljaafari
#BBU Board
USCU Card
USCU (Universal Satellite Card and Clock Unit):
❑A USCUb11 provides ports for communicating with the Remote
Global Positioning System (RGPS, for example, the RGPS on the
reused customer equipment)
❑Building integrated timing supply (BITS) equipment.
❑It does not support GPS signals.
@Laden Ahmed Aljaafari
#BBU Board
UPEU Card
@Laden Ahmed Aljaafari
#BBU Board
UPEU Card
❑UPEU (Universal Power and Environment Interface Unit):
❑Converts –48 V DC input power into +12 V DC power.
❑ Provides two ports with each transmitting one RS485 signal
and two ports with each transmitting four Boolean signals.
❑The Boolean signals can only be dry contact or open
collector (OC) signals.
@Laden Ahmed Aljaafari
#BBU Board
UEIU Card
@Laden Ahmed Aljaafari
#BBU Board
UEIU Card
❑UEIU (Universal Environnent Interface Unit):
❑Provides two ports with each transmitting one RS485
signal and two ports with each transmitting four Boolean
signals.
❑ The Boolean signals can only be dry contact or OC
signals.
❑ Reports monitoring and alarm signals from other devices
to the main control board.
@Laden Ahmed Aljaafari
#BBU Cards
FAN Card
@Laden Ahmed Aljaafari
#BBU Cards
FAN Card
FAN (Fan Module):
❑Dissipates heat from other boards in the BBU.
❑Controls the speed of fans, monitors the temperature of
fans, and reports the status, temperature, and in-position
signals of fans.
❑Provides a read/write electronic label.