2 Transport Subsystem of the Macro NodeB

About This Chapter

The transport subsystem consists of the NDTI and NUTI. The subsystem connects to the RNCto exchange information through the Iub interface.

2.1 Components of the Macro NodeB Transport SubsystemThe transport subsystem consists of the NDTI and NUTI.

2.2 Functions of the Macro NodeB Transport SubsystemThe transport subsystem provides the interface between the NodeB and the RNC. The transportsubsystem is connected to the baseband subsystem and control subsystem through internal buses.The transport subsystem performs NBAP preprocessing and transmits interactive informationbetween the NodeB and the RNC. The transport subsystem also provides multiple transmissionports and supports various networking modes to meet different transmission requirements.

BTS3812E 2 Transport Subsystem of the Macro NodeB

Issue 02 (2007-09-30) Huawei Technologies Proprietary 2-1

2.1 Components of the Macro NodeB Transport SubsystemThe transport subsystem consists of the NDTI and NUTI.

The number of the slot that hosts the NUTIs and NDTIs can be 12, 13, 14, or 15, as shown inFigure 2-1.

Figure 2-1 Iub interface boards in the baseband subrack

The cabinet can be configured with up to four Iub interface boards. Slots 12 and 13 in thebaseband subrack support both the NUTI and NDTI. Slots 14 and 15 support only the NUTIboard that has a sub-board and can be cabled from the front of the subrack..

2.2 Functions of the Macro NodeB Transport SubsystemThe transport subsystem provides the interface between the NodeB and the RNC. The transportsubsystem is connected to the baseband subsystem and control subsystem through internal buses.The transport subsystem performs NBAP preprocessing and transmits interactive informationbetween the NodeB and the RNC. The transport subsystem also provides multiple transmissionports and supports various networking modes to meet different transmission requirements.

The transport subsystem provides the following functions:

l Interfacing the NodeB with the RNC

l Interfacing with the baseband subsystem and control subsystem through internal ATMbuses, performing NBAP preprocessing, and transmitting interactive information betweenthe NodeB and the RNC

The Iub interface boards provide multiple transport interfaces in different networking modes,which satisfies the real needs of operators for a variety of transport networks and interfaces.

2 Transport Subsystem of the Macro NodeB BTS3812E

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