Beam reporting

A second terminal device comprising:

• at least one processor;
• and
• at least one memory storing instructions that, when executed by the at least one processor, cause the second terminal device at least to:
• transmit, to a first terminal device, at least one reference signal associated with at least one of a plurality of beams;
• monitor, from the first terminal device, an indication indicating at least one of the following:
• at least one beam having most suitable signal level and/or quality among the plurality of beams;
• or the at least one of the plurality of beams being usable;
• and
• determine, based on the monitoring, one or more of the at least one of a plurality of beams for signal transmission.

A method comprising:

• determining, at a first terminal device, usability of at least one of a plurality of beams associated with at least one reference signal transmitted by a second terminal device based on measured signal level and/or quality;
• carrying out beam-wise comparison among the at least one of the plurality of the beams determined usable, wherein the beam-wise comparison is based on the measured signal level and/or quality for identifying at least one beam having most suitable signal level and/or quality for signal transmission;
• and
• transmitting, to the second terminal device, an indication indicating at least one of the following:
• the at least one beam having the most suitable signal level and/or quality;
• or the at least one of the plurality of beams being usable.