UMTS Time Slots

UMTS has several different time slot configuration depending on the used channel. Here is an example of DPCH (Dedicated Physical Channel) downlink and uplink time slot allocation.

TCP stands for Transmit Power Control, Feedback Information (FBI) is used for closed loop transmission diversity. Transport Format Combination Indicator (TFCI) contains the information relating to data rates. Pilot bits are always the same and are used for channel synchronisation.