Method for determining CQI information, base station, and user equipment

1. A method for determining channel quality indication (CQI) information, performed by a base station, the method comprising:

determining whether intra-device interference occurrence situations of user equipment (UE) in a CQI measurement period and a subsequent downlink (DL) scheduling period of a bandwidth granularity are the same; and

in response to the intra-device interference occurrence situations being different, determining a CQI level for a subsequent DL scheduling in the bandwidth granularity based on a preset offset.

2. The method of claim 1 , wherein in response to the intra-device interference occurrence situations being different, determining the CQI level for the subsequent DL scheduling in the bandwidth granularity based on the preset offset comprises:

in response to the intra-device interference occurrence situations being different, determining a frequency range involved in intra-device interference in the bandwidth granularity;

sending CQI modification indication information to the UE, wherein the CQI modification indication information comprises the frequency range; and

receiving the CQI level from the UE, wherein the CQI level is a CQI level determined after the UE modifies an original measured value of a reference signal in the frequency range based on the preset offset.

3. The method of claim 2 , wherein the CQI modification indication information further comprises the preset offset for modifying influence of the intra-device interference.

4. The method of claim 1 , further comprising:

determining the preset offset corresponding to the UE, wherein the preset offset is an intra-device interference influence value of an interference sub-band and the interference sub-band is a DL frequency range involved in the intra-device interference.

5. The method of claim 4 , wherein determining the preset offset corresponding to the UE comprises:

when the UE initially accesses a network, sending offset measurement indication information to the UE, wherein the offset measurement indication information is to instruct the UE to measure CQI information in an intra-device interference occurrence period and an intra-device interference-free period in the interference sub-band respectively; and

determining the preset offset corresponding to the UE according to a CQI measurement result obtained by the UE.

6. The method of claim 5 , wherein determining the preset offset corresponding to the UE according to the CQI measurement result obtained by the UE comprises performing one of:

acquiring first measured CQI information measured by the UE in the intra-device interference occurrence period in the interference sub-band; acquiring second measured CQI information measured by the UE in the intra-device interference-free period in the interference sub-band; and determining the preset offset corresponding to the UE according to a difference between the first measured CQI information and the second measured CQI information, or

acquiring a CQI measurement result difference from the UE, wherein the CQI measurement result difference is a difference between measurement results obtained by the UE in the intra-device interference occurrence period and the intra-device interference-free period in the interference sub-band; and determining the preset offset corresponding to the UE according to the CQI measurement result difference.

7. The method of claim 4 , wherein the preset offset comprises one of:

a reference signal received power (RSRP) offset, a received signal reference quality (RSRQ) offset, or a CQI level offset.

8. A base station, comprising:

a processor; and

a memory configured to store instructions executable by the processor,

wherein the processor is configured to:

determine whether intra-device interference occurrence situations of user equipment (UE) in a channel quality indication (CQI) measurement period and a subsequent downlink (DL) scheduling period of a bandwidth granularity are the same; and

in response to the intra-device interference occurrence situations being different, determine a CQI level for a subsequent DL scheduling in the bandwidth granularity based on a preset offset.

9. The base station of claim 8 , wherein the processor is further configured to:

in response to the intra-device interference occurrence situations being different, determine a frequency range involved in intra-device interference in the bandwidth granularity;

send CQI modification indication information to the UE, where the CQI modification indication information comprises the frequency range; and

receive the CQI level from the UE, wherein the CQI level is a CQI level determined after the UE modifies an original measured value of a reference signal in the frequency range based on the preset offset.

10. The base station of claim 8 , wherein the processor is further configured to:

determine the preset offset corresponding to the UE, wherein the preset offset is an intra-device interference influence value of an interference sub-band and the interference sub-band is a DL frequency range involved in the intra-device interference.

11. The base station of claim 10 , wherein the processor is further configured to:

when the UE initially accesses a network, send offset measurement indication information to the UE, wherein the offset measurement indication information is configured to instruct the UE to measure CQI information in an intra-device interference occurrence period and an intra-device interference-free period in the interference sub-band respectively; and

determine the preset offset corresponding to the UE according to a CQI measurement result obtained by the UE.

12. The base station of claim 9 , wherein the CQI modification indication information further comprises the preset offset for modifying influence of the intra-device interference.

13. The base station of claim 11 , wherein the processor is further configured to:

acquire first measured CQI information measured by the UE in the intra-device interference occurrence period in the interference sub-band; acquire second measured CQI information measured by the UE in the intra-device interference-free period in the interference sub-band; and determine the preset offset corresponding to the UE according to a difference between the first measured CQI information and the second measured CQI information, or

acquire a CQI measurement result difference from the UE, wherein the CQI measurement result difference is a difference between measurement results obtained by the UE in the intra-device interference occurrence period and the intra-device interference-free period in the interference sub-band; and determine the preset offset corresponding to the UE according to the CQI measurement result difference.

14. The base station of claim 10 , wherein the preset offset comprises one of:

a reference signal received power (RSRP) offset, a received signal reference quality (RSRQ) offset, or a CQI level offset.

15. A non-transitory computer-readable storage medium having stored therein instructions that, when executed by a processor of a base station, cause the base station to perform a method for determining channel quality indication (CQI) information, the method comprising:

determining whether intra-device interference occurrence situations of user equipment (UE) in a CQI measurement period and a subsequent downlink (DL) scheduling period of a bandwidth granularity are the same; and

in response to the intra-device interference occurrence situations being different, determining a CQI level for a subsequent DL scheduling in the bandwidth granularity based on a preset offset.

16. The non-transitory computer-readable storage medium of claim 15 , wherein in response to the intra-device interference occurrence situations being different, determining the CQI level for subsequent DL scheduling in the bandwidth granularity based on the preset offset comprises:

in response to the intra-device interference occurrence situations being different, determining a frequency range involved in intra-device interference in the bandwidth granularity;

sending CQI modification indication information to the UE, wherein the CQI modification indication information comprises the frequency range; and

receiving the CQI level from the UE, wherein the CQI level is a CQI level determined after the UE modifies an original measured value of a reference signal in the frequency range based on the preset offset.

17. The non-transitory computer-readable storage medium of claim 16 , wherein the CQI modification indication information further comprises the preset offset for modifying influence of the intra-device interference.

18. The non-transitory computer-readable storage medium of claim 15 , the method further comprising:

determining the preset offset corresponding to the UE, wherein the preset offset is an intra-device interference influence value of an interference sub-band and the interference sub-band is a DL frequency range involved in the intra-device interference.

19. The non-transitory computer-readable storage medium of claim 18 , wherein determining the preset offset corresponding to the UE comprises:

when the UE initially accesses a network, sending offset measurement indication information to the UE, wherein the offset measurement indication information is to instruct the UE to measure CQI information in an intra-device interference occurrence period and an intra-device interference-free period in the interference sub-band respectively; and

determining the preset offset corresponding to the UE according to a CQI measurement result obtained by the UE.

20. The non-transitory computer-readable storage medium of claim 19 , wherein determining the preset offset corresponding to the UE according to the CQI measurement result obtained by the UE comprises performing one of:

acquiring first measured CQI information measured by the UE in the intra-device interference occurrence period in the interference sub-band; acquiring second measured CQI information measured by the UE in the intra-device interference-free period in the interference sub-band; and determining the preset offset corresponding to the UE according to a difference between the first measured CQI information and the second measured CQI information, or

acquiring a CQI measurement result difference from the UE, wherein the CQI measurement result difference is a difference between measurement results obtained by the UE in the intra-device interference occurrence period and the intra-device interference-free period in the interference sub-band; and determining the preset offset corresponding to the UE according to the CQI measurement result difference.