Beamforming In A Wireless Communication System

A method performed by a radio network node serving a wireless device in a wireless communication system;

• the method comprising the radio network node:
• determining that the wireless device is onboard a public transit vehicle;
• based on the determining, predicting a position of the public transit vehicle based on a route schedule of the public transit vehicle and/or positioning measurements received from the public transit vehicle;
• and
• controlling beamforming for the wireless device based on the predicted position of the public transit vehicle, wherein the controlling comprises:
• dynamically adjusting a direction of a beam on which the radio network node transmits to or receives from the wireless device, as needed for the direction of the beam to track movement of the public transit vehicle;
• and/or
• selecting a beam on which to transmit to or receive from the wireless device, by identifying, from among candidate beams in a set, a subset of the candidate beams with coverage in a vicinity of the predicted position of the public transit vehicle, and selecting a candidate beam in the subset.

A radio network node configured to serve a wireless device in a wireless communication system, the radio network node comprising:

• processing circuitry;
• and
• memory containing instructions executable by the processing circuitry whereby the radio network node is configured to:
• determine that the wireless device is onboard a public transit vehicle;
• based on determining that the wireless device is onboard the public transit vehicle, predict a position of the public transit vehicle based on a route schedule of the public transit vehicle and/or positioning measurements received from the public transit vehicle;
• and
• control beamforming for the wireless device based on the predicted position of the public transit vehicle, by:
• dynamically adjusting a direction of a beam on which the radio network node transmits to or receives from the wireless device, as needed for the direction of the beam to track movement of the public transit vehicle;
• and/or
• selecting a beam on which to transmit to or receive from the wireless device, by identifying, from among candidate beams in a set, a subset of the candidate beams with coverage in a vicinity of the predicted position of the public transit vehicle and selecting a candidate beam in the subset.

A non-transitory computer readable recording medium storing a computer program product for controlling a radio network node serving a wireless device in a wireless communication system;

• the computer program product comprising software instructions which, when run on processing circuitry of the radio network node, causes the radio network node to:
• determine that the wireless device is onboard a public transit vehicle;
• based on the determining, predict a position of the public transit vehicle based on a route schedule of the public transit vehicle and/or positioning measurements received from the public transit vehicle;
• and
• control beamforming for the wireless device based on the predicted position of the public transit vehicle, wherein the controlling comprises:
• dynamically adjusting a direction of a beam on which the radio network node transmits to or receives from the wireless device, as needed for the direction of the beam to track movement of the public transit vehicle;
• and/or
• selecting a beam on which to transmit to or receive from the wireless device, by identifying, from among candidate beams in a set, a subset of the candidate beams with coverage in a vicinity of the predicted position of the public transit vehicle, and selecting a candidate beam in the subset.