What Is HS-DPCCH And High-Speed Dedicated Physical Control

Channel Work In WCDMA

Carrying information to acknowledge downlink transport blocks and feedback information to the system

for scheduling and link adaptation of transport block CQI and ACK/NACK Physical Channel, Uplink,

SF=256

A High-Speed Dedicated Physical Control Channel, or HS-DPCCH, is the third uplink channel for

WCDMA. It makes it possible for changing power relations between to the dedicated uplink channels to be

obtained.

The uplink HS-DPCCH consists of:

Acknowledgements for HARQ

Channel Quality Indicator (CQI)

As the HS-DPCCH uses SF=256, there are a total of 30 channel bits per 2 ms sub frame (3 time slot). The

HS-DPCCH information is divided in such a way that the HARQ acknowledgement is transmitted in the

first slot of the sub frame while the channel quality indication is transmitted in the rest slot.