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UTRAN Iub Interface General Frame Structure

The general structure of a Common Transport Channel frame between Node B and

RNC consists of a header and a payload.

Header Payload: Data or Control Information

General Frame Structure

There are two types of frames (indicated by the Frame Type field).

Data frame.

Control frame.

The general structure of frames

Data frame example:

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DL FDD DSCH data frame structure

CRC

FT

CFNTFI

SF

SP

MC Info

TB

Cyclic Redundancy Checksum

Frame Type

Connection Frame NumberTransport Format Indicator

Spreading Factor

Spare

Multi Code to indicate the number of parallel PDSCH codes

on which the DSCH data will be carried

Transport Block

Control frame example:

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Iub Common Transport Channel Control Frame Format

W-CDMA Connection Setup Channels