Fast and Efficient Multistatic Radar Measurements in a Cellular Communications System

A method of radar sensing a first object in a cellular communication system that comprises a first node, the method comprising:

• using a narrowband receiver of the first node to simultaneously receive a plurality of different directional narrowband receive beams;
• identifying therefrom a first directional narrowband receive beam, wherein a first signal received in the first directional narrowband receive beam is associated with a first reflection from the first object;
• using a receive direction of the first directional narrowband receive beam as a first estimate of a direction of the first object relative to the first node;
• and
• using the first estimate of the direction of the first object and additional information to derive a first estimate of a position of the first object.

An apparatus for radar sensing a first object in a cellular communication system that comprises a first node, the apparatus comprising circuitry configured to cause:

• using a narrowband receiver of the first node to simultaneously receive a plurality of different directional narrowband receive beams;
• identifying therefrom a first directional narrowband receive beam, wherein a first signal received in the first directional narrowband receive beam is associated with a first reflection from the first object;
• using a receive direction of the first directional narrowband receive beam as a first estimate of a direction of the first object relative to the first node;
• and
• using the first estimate of the direction of the first object and additional information to derive a first estimate of a position of the first object.