UTRP
A universal transmission processing unit (UTRP) is an extended transmission board. A UTRPa or UTRPc can be installed in a BBU3900 or BBU3910. Other types of UTRP boards can be installed only in BBU3900s.
A UTRP performs the following functions:
Provides E1/T1 transmission port over ATM, TDM, or IP.
Provides electrical and optical transmission ports.
Supports cold backup.
Here's a working principle
USCU
A USCU is a universal satellite card and clock unit.
A USCU performs the following functions:
A USCUb11 provides ports for communicating with the RGPS (for example, the RGPS on the reused customer equipment) and BITS equipment. A USCUb11 does not support GPS signals.
A USCUb14 does not support RGPS signals. A USCUb14 contains a UBLOX satellite card.
A USCUb22 does not support RGPS signals. A USCUb22 uses a Naviors satellite card, which must be purchased locally and installed onsite.
Here's a working principle:
UBRI
A UBRI or UBRIb is universal baseband radio interface unit. A UBRIb can be installed in a BBU3900 or BBU3910, but a UBRI can be installed only in a BBU3900.
The UBRI or UBRIb performs the following functions:
A UBRI or UBRIb provides extended CPRI optical or electrical ports.
When a UBRI or UBRIb is working in GSM mode, RF modules process baseband signals.
A UBRIb receives CPRI signals in single-mode or multimode base stations.
A UBRIb only supports single mode in separate-MPT base stations.
UCIU:
A UCIU is a universal inter-connection infrastructure unit. A UCIU can be installed in a BBU3900.
A UCIU performs the following functions:
Supports single-mode or multimode configuration and management. When in multiple modes, it is shared by multiple modes and can be configured and managed by any mode.
Interconnects BBUs, and forwards control and synchronization information from one BBU to another.
Supports co-site of a 3900 series base station and a 3012 series base station.
Here's a working principle:
UCCU
The universal inter-connection combo unit (UCCU) can be installed in a BBU3900 or BBU3910.
The UCCU performs the following functions:
Supports interconnection between the BBU and USU.
Allows the BBU to exchange data with the USU.
Here's a working principle:
Feel free to ask any question folks!
