Jun 232009
Show me an actual example of TF, TFS, TFCS, TFC

Below is an example of transport characteristics of an interactive service through DCH

The below is an example of the transport characteristics of a Signaling Radio Bearer through DCH

These two DCHs are multiplexed into a CCTrCH with the following TFCS (transport format combination set).

For a given TTI, TFC (Transport format combination) is chosen and used.

Jun 182009

Yes!
Transport format combination (TFC)  selection frequency is equal to the length of the shortest configured TTI duration.

Jun 172009
What is TTI in umts?

The MAC layer generates a new transport block every 10-ms (or multiple of blocks.)
A set of simultaneous transport blocks is the transport block set.
The transmission time interval (TTI) is the duration of each transport block set.
This can be 10, 20, 40, 80 ms.
TTI does not tell you data size. It tells you how often the [...]

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