Beamforming for interference suppression
AssigneeNokia Solutions and Networks Oy
InventorAndrei MALKOV
Life of this patent
Estimating the term…
Abstract
Systems, methods, apparatuses, and computer program products for interference reduction. One method may include calculating at least one downlink beamforming coefficients vector, and estimating at least one channel coefficient. Interference may be calculated, and a configuration may be selected based upon a determination of interference power. The transformed beamforming coefficients vector may be calculated by at least one of minimizing maximum interference power over one or more uplink antenna elements, minimizing mean interference power over one or more uplink antenna elements, or minimizing interference power based on uplink beamforming.
Claims21
A method comprising:
- determining an interference channel matrix of an antenna array having a plurality of uplink antenna elements and a plurality of downlink antenna elements;
- determining an untransformed beamforming coefficients vector;
- determining a transformed beamforming coefficients vector using the untransformed beamforming coefficients vector and the interference channel matrix;
- determining an interference of the plurality of the uplink antenna elements and the plurality of the downlink antenna elements using the transformed beamforming coefficients vector and determining a power of the interference of the plurality of the uplink antenna elements and the plurality of the downlink antenna elements;
- determining a maximum interference of the antenna array based on the determined power of the interference;
- and
- in response to the maximum interference being less than or equal to a predefined target maximum interference, operating the antenna array based on the transformed beamforming coefficients vector.
An apparatus comprising:
- a processor configured to:
- determine an interference channel matrix of an antenna array having a plurality of uplink antenna elements and a plurality of downlink antenna elements;
- determine an untransformed beamforming coefficients vector;
- determine a transformed beamforming coefficients vector using the untransformed beamforming coefficients vector and the interference channel matrix;
- determine an interference of the plurality of the uplink antenna elements and the plurality of the downlink antenna elements using the transformed beamforming coefficients vector and determine a power of the interference of the plurality of the uplink antenna elements and the plurality of the downlink antenna elements;
- determine a maximum interference of the antenna array based on the determined power of the interference;
- and
- in response to the maximum interference being less than or equal to a predefined target maximum interference, operate the antenna array based on the transformed beamforming coefficients vector.
(canceled)
A non-transitory computer readable medium comprising program instructions that, when executed by a processor, cause the processor to:
- determine an interference channel matrix of an antenna array having a plurality of uplink antenna elements and a plurality of downlink antenna elements;
- determine an untransformed beamforming coefficients vector;
- determine a transformed beamforming coefficients vector using the untransformed beamforming coefficients vector and the interference channel matrix;
- determine an interference of the plurality of the uplink antenna elements and the plurality of the downlink antenna elements using the transformed beamforming coefficients vector and determine a power of the interference of the plurality of the uplink antenna elements and the plurality of the downlink antenna elements;
- determine a maximum interference of the antenna array based on the determined power of the interference;
- and
- in response to the maximum interference being less than or equal to a predefined target maximum interference, operate the antenna array based on the transformed beamforming coefficients vector.
21-22. (canceled)
Dependencies are inferred from the claim text.