Interference reduction

A method, comprising:

• obtaining, by a network apparatus, antenna sensing information with respect to signals received by a base station operating under a shared access-system which allows a licensee system to apply at least a part of a shared access spectrum which is currently unused by an incumbent system;
• detecting, on the basis of the antenna sensing information, that at least one device of the incumbent system is communicating on the shared access spectrum in the coverage area of the base station;
• identifying the angular sector in which the device of the incumbent system is located with respect to the base station;
• dynamically isolating the identified angular sector from usage by the licensee system, wherein the base station is performing communication on a first sub-band of the shared access spectrum;
• configuring the base station to collect the antenna sensing information with respect to a second sub-band of the shared access spectrum;
• and
• acquiring the antenna sensing information with respect to the second sub-band which is different than the first sub-band.

An apparatus, comprising:

• at least one processor;
• and
• at least one memory including computer program code,
• the at least one memory and the computer program code configured, with the at least one processor, to cause the apparatus to perform at least the following:
• obtaining, by a network apparatus, antenna sensing information with respect to signals received by a base station operating under a shared access-system which allows a licensee system to apply at least a part of a shared access spectrum which is currently unused by an incumbent system;
• detecting, on the basis of the antenna sensing information, that at least one device of the incumbent system is communicating on the shared access spectrum in the coverage area of the base station;
• identifying the angular sector in which the device of the incumbent system is located with respect to the base station;
• dynamically isolating the identified angular sector from usage by the licensee system, by performing at least the following:
• identifying the angular sector within a cell of the base station on the basis of phase information comprised in the antenna sensing information, wherein the phase information indicates a phase of the received signal with respect to a plurality of antenna elements of the base station, wherein the identified angular sector is defined horizontally and vertically as a part of the cell of the base station;
• and
• dynamically isolating only the identified angular sector that defines the part of the cell from usage by the licensee system, thereby restraining from shutting the entire cell of the base station from the licensee system.

An apparatus, comprising:

• at least one processor;
• and
• at least one memory including computer program code,
• the at least one memory and the computer program code configured, with the at least one processor, to cause the apparatus to perform at least the following:
• obtaining, by a network apparatus, antenna sensing information with respect to signals received by a base station operating under a shared access-system which allows a licensee system to apply at least a part of a shared access spectrum which is currently unused by an incumbent system;
• detecting, on the basis of the antenna sensing information, that at least one device of the incumbent system is communicating on the shared access spectrum in the coverage area of the base station;
• identifying the angular sector in which the device of the incumbent system is located with respect to the base station;
• dynamically isolating the identified angular sector from usage by the licensee system, wherein the base station is performing communication on a first sub-band of the shared access spectrum;
• configuring the base station to collect the antenna sensing information with respect to a second sub-band of the shared access spectrum;
• and
• acquiring the antenna sensing information with respect to the second sub-band which is different than the first sub-band.