Base transceiver station interference cancellation for reuse of terrestrial carrier in air-to-ground communication
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsJoakim Axmon, Esther Sienkiewicz
Life of this patent
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Abstract
A terrestrial network node of a terrestrial mobile communication network is operated to simultaneously serve terrestrial and aerial coverage on a same carrier frequency. Such operation includes directing a first reception beam towards an aerial radio node. A second reception beam is directed towards a user equipment in the terrestrial mobile communication network. The signal received in the first reception beam is filtered to create a replica of a signal transmitted by the aerial radio node as received by the second reception beam. The replica is subtracted from the signal received by the second reception beam.
Claims10
A method of operating a mobile communication network node to simultaneously serve a user equipment in a terrestrial mobile communication network and an aerial radio node on a same carrier frequency, the method comprising:
- directing a first reception beam towards the aerial radio node and receiving a first signal using the first reception beam;
- directing a second reception beam towards the user equipment in the terrestrial mobile communication network and receiving a second signal using the second reception beam;
- identifying a contribution associated with the first signal in the second signal;
- filtering the first signal using an adaptive filter to provide a replica signal corresponding to the contribution associated with the first signal in the second signal;
- and
- subtracting the replica signal from the second signal to obtain a desired signal.
A mobile communication network node for simultaneous communication with a user equipment in a terrestrial mobile communication network and an aerial radio node on a same carrier frequency, the network node comprising:
- a first antenna array to receive a first signal from the aerial radio node;
- a first beamformer to adjust antenna weights of the first antenna array to provide a first reception beam directed towards the aerial radio node;
- a second antenna array to receive a second signal from the user equipment in the terrestrial mobile communication network;
- a second beamformer to adjust antenna weights of the second antenna array to provide a second reception beam directed towards the user equipment in the terrestrial mobile communication network;
- an adaptive filter adapted to receive the first signal and the second signal and to output a replica signal corresponding to a contribution associated with the first signal in the second signal;
- and
- a subtractor to subtract the replica signal from the second signal to obtain a desired signal.
(canceled)
A non-transitory computer readable storage medium comprising a set of instructions that, when performed by one or more processors, carry out functionality of a method of operating a mobile communication network node to simultaneously serve a user equipment in a terrestrial mobile communication network and an aerial radio node on a same carrier frequency, the method comprising:
- directing a first reception beam towards the aerial radio node and receiving a first signal using the first reception beam;
- directing a second reception beam towards the user equipment in the terrestrial mobile communication network and receiving a second signal using the second reception beam;
- identifying a contribution associated with the first signal in the second signal;
- filtering the first signal using an adaptive filter to provide a replica signal corresponding to the contribution associated with the first signal in the second signal;
- and
- subtracting the replica signal from the second signal to obtain a desired signal.
Dependencies are inferred from the claim text.