Determination of candidate set of beams for beam tracking

A computer program product comprising a non-transitory computer readable medium, having thereon a computer program comprising program instructions, the computer program being loadable into a data processing unit and configured to cause execution of a method when the computer program is run by the data processing unit, wherein the method is for wireless communication, wherein an access node is configured to transmit signals using beamforming to a user device, wherein transmitting signals using beamforming comprises transmitting signals using a selected beam of a plurality of available beams, and wherein beam tracking comprises measurements by the user device on a candidate set of beams of the plurality of available beams for beam selection, and wherein the method comprises:

• predicting a future trajectory for the user device;
• determining a reliability of the prediction;
• and
• determining the candidate set of beams based on the predicted future trajectory and the determined reliability of the prediction,
• wherein predicting the future trajectory comprises determining a speed of movement of the user device, and
• wherein the method further comprises adjusting one or more of a beam tracking measurement frequency, a beam tracking measurement periodicity, a beam tracking measurement period, and a beam tracking measurement interval based on the determined speed of movement of the user device.

An apparatus for wireless communication, wherein an access node is configured to transmit signals using beamforming to a user device, wherein transmitting signals using beamforming comprises transmitting signals using a selected beam of a plurality of available beams, and wherein beam tracking comprises measurements by the user device on a candidate set of beams of the plurality of available beams for beam selection, the apparatus comprising controlling circuitry configured to cause:

• prediction of a future trajectory for the user device;
• determination of a reliability of the prediction;
• and
• determination of the candidate set of beams based on the predicted future trajectory and the determined reliability of the prediction,
• wherein causing prediction of the future trajectory comprises causing a determination of a speed of movement of the user device, and
• wherein the controlling circuitry is further configured to cause adjustment of one or more of a beam tracking measurement frequency, a beam tracking measurement periodicity, a beam tracking measurement period, and a beam tracking measurement interval based on the determined speed of movement of the user device.