MULTI-GRANULAR FEEDBACK REPORTING AND FEEDBACK PROCESSING FOR PRECODING IN TELECOMMUNICATIONS

摘要

A communications system comprises a second device (30) and a first device (28). The first device (28) is of a type which receives, on a downlink over a radio interface from a second device, preceded information (29), In an example mode the first device (28) generates a multi- part feedback signal (22) which is configured to affect content of a precoder matrix (40) utilized by the second device (30). On an uplink over the radio interface to the second device, at least two different parts of the multi-part feedback signal are transmitted with two respective different transmission granularities in time and/or frequency.