method for feedback transmission in a radio communications system, and stations for a radio communications system

摘要

The invention relates to a radio communication system having two operative states for transmitting feedback information for beam formation from a subscriber station to a base station. In the first operative state, the subscriber station selects a weighting vector (S0, S1) from a defined first set of weighting vectors, and transmits a first identifier associated with said weighting vector as feedback information to the base station (S3). In the second operative state, the subscriber station determines a weighting vector (S8, S9, S10) from a second set of weighting vectors which is smaller than the first set and with which are associated second identifiers which are shorter than the identifiers of the first set, and transmits the second identifier associated with the weighting vector as feedback information to the base station (S7).