METHOD, APPARATUS AND COMPUTER PROGRAM FOR MULTI-CELL PERIODIC FEEDBACK OF CHANNEL STATE INFORMATION

摘要

A user equipment (UE) determines, 302, from a received downlink resource allocation that an uplink data channel is reconfigured for multi-cell periodic feedback of channel state information. In response, the UE utilises, 306, at least a first and a second instance of the uplink data channel to send the multi-cell periodic feedback of the channel state information. Certain indications in the Physical Downlink Control Channel (PDCCH) are what triggers reconfiguration. Four different triggering mechanisms, 304, are disclosed by which the UE determines the Physical Uplink Shared Channel (PUSCCH) reconfiguration. The UE can detect a predetermined combination of at least two fields of the resource allocation; or a value of a channel state indication request state in the resource allocation; or a predefined sequence in a field of the resource allocation; or by de-scrambling at least a portion of the resource allocation using a temporary identifier dedicated for this purpose.