Method and apparatus for coordinating interference, base station and user equipment

A method of coordinating interference, comprising:

• reporting, by a User equipment (UE), interference tolerance capability information of the UE to a base station for determining, for the UE, whether in-device interference exists between uplink and downlink transmissions in two frequency bands according to the interference tolerance capability information reported by the UE and information on the UE accessing a network, wherein the two frequency bands comprise a frequency band for Long Term Evolution (LTE) as a first frequency band and a frequency band for New Radio (NR) as a second frequency band;
• and then
• receiving, by the UE, configuration information, which is sent by the base station upon determining a time interval during which the base station sends control data of the downlink transmission in one of the two frequency bands after-if determining that the in-device interference exists between the uplink and downlink transmissions in the two frequency bands, wherein a harmonic interference exists between an uplink transmission in the first frequency band and a downlink transmission in the second frequency band for the UE when integer multiples of the first frequency band at least partially overlap with the second frequency band, or an intermodulation interference exists between the uplink transmissions in both the first frequency band and the second frequency band and a downlink transmission in the first frequency band for the UE when the uplink transmission in the first frequency band and the uplink transmission in the second frequency band are added to a receiver at the same time to cause interference to the downlink transmission in the first frequency band or the second frequency band;
• and
• according to the configuration information, in the time interval during which the base station sends control data of the downlink transmission in one of the two frequency bands, stopping, by the UE, the uplink transmission in at least one of the two frequency bands or performing, by the UE, power back-off for the uplink transmission in the at least one of the two frequency bands.

A base station comprises:

• a processor;
• and
• a memory for storing instructions executable by the processor,
• wherein the processor is configured to:
• receive interference tolerance capability information reported by a User Equipment (UE);
• and then
• determine whether in-device interference exists between uplink and downlink transmissions, for the UE, in two frequency bands according to the interference tolerance capability information reported by the UE and information on the UE accessing a network, wherein the two frequency bands comprise a frequency band for Long Term Evolution (LTE) as a first frequency band and a frequency band for New Radio (NR) as a second frequency band;
• determine that a harmonic interference exists between an uplink transmission in the first frequency band and a downlink transmission in the second frequency band for the UE when integer multiples of the first frequency band at least partially overlap with the second frequency band;
• determine that an intermodulation interference exists between the uplink transmissions in both the first frequency band and the second frequency band and a downlink transmission in the first frequency band for the UE when the uplink transmission in the first frequency band and the uplink transmission in the second frequency band are added to a receiver at the same time to cause interference to the downlink transmission in the first frequency band or the second frequency band;
• determine a time interval during which the base station sends control data of the downlink transmission in one of the two frequency bands if the in-device interference exists between the uplink and downlink transmissions in the two frequency bands;
• and
• send configuration information to the UE, wherein the configuration information is used to instruct the UE to, in the time interval during which the base station sends control data of the downlink transmission in one of the two frequency bands, stop the uplink transmission in at least one of the two frequency bands or perform power back-off for the uplink transmission in the at least one of the two frequency bands.