公开(公告)号：US20230081201A1

公开(公告)日：2023-03-16

申请号：US17797505

申请日：2020-02-10

Applicant: Nokia Solutions and Networks Oy

Inventor： Marko Fleischer ,  Jan HELLMANN ,  Rene ROSCHKE ,  Helmut HEINZ

IPC: H04B7/06

Abstract: The present subject matter relates to an apparatus for a communication system. The apparatus is configured for: for each beam direction of a set of beam directions of an antenna array of the communication system, determining a level of a passive intermodulation, PIM, signal at a receiver of the communication system, the PIM signal being caused by a set of signals transmitted by the antenna array in the beam direction, identifying beam directions of the set of beam directions whose PIM level is higher than a predefined threshold, adapting a beamforming of signals in at least part of the identified beam directions to mitigate the PIM level at the receiver.

公开(公告)号：US20220286153A1

公开(公告)日：2022-09-08

申请号：US17760624

申请日：2019-09-17

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Marko FLEISCHER ,  Helmut HEINZ ,  Jakub JUCHNIEWICZ ,  Rene RÖSCHKE ,  Jan HELLMANN

IPC: H04B1/10 ,  H04B1/00

Abstract: The present subject matter relates to an apparatus for a communication system. The communication system comprises transmitters being configured to operate in multiple transmission frequency bands. The apparatus comprises means being configured for: capturing a set of over-the-air signals at distinct frequency bands of the multiple transmission frequency bands; aligning in time the set of signals using delays between the set of signals and a received signal at a selected receiver of the communication system; combining the set of aligned signals to generate a composite signal; and estimating an interference signal that is caused by the set of signals at the selected receiver by weighting the composite signal using a set of one or more calibrated parameters for the estimation.

公开(公告)号：US20220263588A1

公开(公告)日：2022-08-18

申请号：US17597820

申请日：2019-07-31

Applicant: Nokia Solutions and Networks Oy

Inventor： Marko FLEISCHER ,  Helmut HEINZ

IPC: H04B17/21 ,  H04B17/345 ,  H04B1/10

Abstract: The present subject matter relates to a method comprising: receiving a set of signals from transmitters of a communication system, the communication system having a system configuration. A first and second set of machine learned parameters may be provided in accordance with the system configuration. The received signals may be weighted using the first set of machine learned parameters. The weighted signals may be combined to generate a composite signal. The composite signal may be weighted with the second set of machine learned parameters in order to estimate an interference signal that is caused by the set of signals at a receiver of the communication system.