Wireless Oom

During a given TTI, the selected transport formation combination (TFC) must reamin the same.

It can be changed by the transmitter from one TTI to another.

Such a change involves alterations in physical layer parameters suchas the spreading factor etc.

Thus, the receiver should detect the transport format combination that is being used at a given moment.

This can be done explicitly by means of TFCI (indicator), included in the control physical channels, or by means of blind detection procedures.