Hello friend!
The UBBP is a universal baseband processing unit.
Function
A UBBP performs the following functions:
Provides CPRI ports for communication with RF modules.
Processes uplink and downlink baseband signals.
Supports the multiplex of baseband resources among different modes, thereby implementing multimode concurrency.
Mapping Between Boards and BBUs
UBBP boards in the BBU5900
UBBPd (UBBPd1/UBBPd2/UBBPd3/UBBPd4/UBBPd5/UBBPd6)
UBBPe (UBBPe1/UBBPe2/UBBPe3/UBBPe4/UBBPe5/UBBPe6/UBBPe18)
UBBPg (UBBPg1/UBBPg1a/UBBPg2/UBBPg2a/UBBPg3/UBBPg3b)
UBBPfw1
UBBP boards in the BBU3900
WBBPf (WBBPf3/WBBPf4)
LBBPd (LBBPd1/LBBPd2/LBBPd3/LBBPd4)
UBBPd (UBBPd1/UBBPd2/UBBPd3/UBBPd4/UBBPd5/UBBPd6)
UBBPe (UBBPe1/UBBPe2/UBBPe3/UBBPe4/UBBPe5/UBBPe6/UBBPe18)
UBBPg1/UBBPg1a
UBBP boards in the BBU3910
UBBPd (UBBPd1/UBBPd2/UBBPd3/UBBPd4/UBBPd5/UBBPd6)
UBBPe (UBBPe1/UBBPe2/UBBPe3/UBBPe4/UBBPe5/UBBPe6/UBBPe18)
UBBPg (UBBPg1/UBBPg1a/UBBPg2/UBBPg2a)
Hope it helps you!