Telefonaktiebolaget LM Ericsson (publ)
APPROACHES FOR BEAM SELECTION

Abstract:

A method is disclosed for a transmitter apparatus configured to transmit signals to a receiver apparatus using a beam selected from a plurality of available beams, wherein a set of the plurality of available beams is for beam selection measurements by the receiver apparatus. The method comprises determining a collection of linear combinations of beams of the set, wherein the cardinality of the collection is lower than a cardinality of the set, and transmitting each of the linear combinations of beams for beam selection measurements by the receiver apparatus. A method is also disclosed for a receiver apparatus configured to receive signals from a transmitter apparatus via a beam selected from a plurality of available beams. The method comprises receiving a number of measurement signals for beam selection measurements from the transmitter apparatus, wherein the number of measurement signals correspond to a collection of linear combinations of beams of a set of the plurality of available beams, wherein the cardinality of the collection is lower than a cardinality of the set, and performing beam selection measurements on the number of measurement signals for selection of the beam from the plurality of available beams. Corresponding transmitter apparatus, receiver apparatus, network node, wireless communication device and computer program products are also disclosed.