Method and device for receiving downlink control information

Abstract

The present disclosure provides a method and device for receiving downlink control information (Downlink Control Information, DCI). The method may include: User Equipment (UE) determines the number of detections corresponding to the DCI detection capability of the UE and the number of detections corresponding to the DCI format; the UE reduces the number of detections corresponding to the DCI format, wherein the reduced number of detections corresponding to the DCI format is less than or equal to the number of detections corresponding to the DCI detection capability; the UE receives the DCI according to the reduced number of detections corresponding to the DCI format. According to the method and device of the present disclosure, the complexity of the process of receiving DCI can be reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of wireless communications, and more specifically, to a method and device for receiving downlink control information (Downlink Control Information, DCI). Background Art

[0002] In the Long-term Evolution (LTE) system, the transmission of the Physical Downlink Shared Channel (PDSCH) and the Physical Uplink Shared Channel (PUSCH) is scheduled by the Downlink Control Information (DCI) transmitted by the Physical Downlink Control Channel (PDCCH). The search space for transmitting DCI includes the Common Search Space (CSS) and the User Equipment (UE)-specific Search Space (USS), wherein for the CSS, any UE can perform demodulation and decoding, while for the USS, only a specific UE can perform demodulation and decoding. The DCI format can be divided into a DCI format for scheduling PDSCH (for example, DCI format 1-0, DCI format 1-1) and a DCI format for scheduling PUSCH (for example, DCI format 0-0, DCI format 0-1). The DCI format can also be divided into a fallback DCI format (for example, DCI format 0-0, DCI format 1-0) and a non-fallback DCI format (for example, DCI format 0-1, DCI format 1-1). The number of information bits (referred to as the number of bits) contained in DCIs of different formats (for example, configured or required, etc.) may be the same or different. The number of bits contained in a DCI with a specific DCI format (for example, configured or required, etc.) may be referred to as the number of bits of the specific DCI format.

[0003] When using DCI of different DCI formats, the number of bits required may be different. For example, the difference between the number of bits of different DCI formats may be large enough to identify the difference. For example, even if the difference between the number of bits of different DCI formats is not large, that is, as long as there is a difference between the number of bits of different DCI formats, it can be determined whether the DCI format is a fallback DCI format or a non-fallback DCI format.

[0004] In the process of receiving (e.g., monitoring) DCI, different DCI receiving methods have different complexities, which can be measured by the number of detections. When the complexity is high, it may affect data transmission, for example, affecting the transmission of Ultra Reliability Low Latency Communication (URLLC) data. Summary of the invention

[0005] The present disclosure provides a method and device for receiving DCI, which can reduce the complexity of the process of receiving DCI by electronic devices such as UE, and especially reduce the impact on the transmission of data such as URLLC data.

[0006] According to an exemplary embodiment of the present disclosure, a method for receiving downlink control information DCI is provided, including: a UE determines a detection number corresponding to a DCI detection capability of the UE and a detection number corresponding to a DCI format; the UE reduces the detection number corresponding to the DCI format, wherein the reduced detection number corresponding to the DCI format is less than or equal to the detection number corresponding to the DCI detection capability; and the UE receives the DCI according to the reduced detection number corresponding to the DCI format.

[0007] Optionally, the step of reducing the number of detections corresponding to the DCI format includes: reducing the number of DCI formats with different numbers of detected bits by changing the number of bits of at least one DCI format, so as to eliminate the number of detections corresponding to the DCI format removed by changing the number of bits, and / or, limiting the number of detections of the physical downlink control channel PDCCH and the number of detections of non-overlapping control channel elements CCE.

[0008] Optionally, for a service cell introducing URLLC service transmission, the step of reducing the number of detected DCI formats with different bit numbers includes at least one of the following items: increasing or decreasing the number of bits of the DCI format so that the number of bits of the DCI format 0-0 of the CSS is the same as the number of bits of the DCI format 1-0 of the CSS; increasing or decreasing the number of bits of the DCI format so that the number of bits of the DCI format 0-0 of the USS is the same as the number of bits of the DCI format 1-0 of the CSS; if the number of bits of the DCI format 0-1 of the USS is the same as the number of bits of the DCI format 0-0 of the USS or the number of bits of the DCI format 1-0 of the USS, If the number of bits of DCI format 0-1 of USS is the same as the number of bits of DCI format 0-0 of USS or the number of bits of DCI format 1-0 of USS, 1 bit is added to the number of bits of DCI format 0-1 of USS so that the number of bits of DCI format 0-1 of USS is different from the number of bits of DCI format 0-0 of USS or the number of bits of DCI format 1-0 of USS; if the number of bits of DCI format 1-1 of USS is the same as the number of bits of DCI format 0-0 of USS or the number of bits of DCI format 1-0 of USS, 1 bit is added to the number of bits of DCI format 1-1 of USS so that the number of bits of DCI format 1-1 of USS is different from the number of bits of DCI format 0-0 of USS or the number of bits of DCI format 1-0 of USS,

[0009] Among them, if the above steps make the number of DCI formats with different numbers of bits detected by the UE in each service cell less than or equal to M, and the number of DCI formats with different numbers of bits scrambled by C-RNTI detected by the UE in each service cell is less than or equal to N, then the step of reducing the number of DCI formats with different numbers of bits detected is completed, wherein N≥4 and M≥3.

[0010] Optionally, for the service cell introducing URLLC service transmission, if the number of DCI formats with different numbers of bits detected by the UE in each service cell is not less than or equal to M, and the number of DCI formats with different numbers of bits scrambled with C-RNTI detected by the UE in each service cell is less than or equal to N, the following steps are performed in the order of step b, step c, step d, step e, step f, and step a until the number of DCI formats with different numbers of bits detected by the UE in each service cell is less than or equal to M, and the number of DCI formats with different numbers of bits scrambled with C-RNTI detected by the UE in each service cell is less than or equal to N, where N≥4, M≥3: Step a, by increasing or decreasing the number of bits of DCI format 0-x of USS or the number of bits of DCI format 1-x of USS, the number of bits of DCI format 0-x of USS is made the same as the number of bits of DCI format 1-x of USS; Step b, by increasing or decreasing the number of bits of DCI format 0-1 of USS, the number of bits of DCI format 0-1 of USS is made the same as the number of bits of DCI format 0-x of USS or the number of bits of DCI format 1-x of USS; Step c, by increasing or decreasing the number of bits of DCI format 1-1 of USS, the number of bits of DCI format 1-1 of USS is made the same as the number of bits of DCI format 0-x of USS or the number of bits of DCI format 1-1 of USS step d, if the difference between the number of bits of DCI format 0-1 of USS and the number of bits of DCI format 0-x of USS or the number of bits of DCI format 1-x of USS is less than or equal to the threshold value, then the number of bits of DCI format 0-1 of USS is increased or decreased so that the number of bits of DCI format 0-1 of USS is the same as the number of bits of DCI format 0-x of USS or the number of bits of DCI format 1-x of USS; if the difference between the number of bits of DCI format 0-1 of USS and the number of bits of DCI format 0-x of USS or the number of bits of DCI format 1-x of USS is greater than the threshold value, then the UE stops detecting the DCI format of USS. CI format 0-1; step e, if the difference between the number of bits of DCI format 1-1 of USS and the number of bits of DCI format 0-x of USS or the number of bits of DCI format 1-x of USS is less than or equal to the threshold value, then the number of bits of DCI format 1-1 of USS is increased or decreased so that the number of bits of DCI format 1-1 of USS is the same as the number of bits of DCI format 0-x of USS or the number of bits of DCI format 1-x of USS; if the difference between the number of bits of DCI format 1-1 of USS and the number of bits of DCI format 0-x of USS or the number of bits of DCI format 1-x of USS is greater than the threshold value, the UE stops detecting DCI format 1-1 of USS;Step f, by increasing or decreasing the number of bits of the DCI format 0-1 of the USS or the number of bits of the DCI format 1-1 of the USS, so that the number of bits of the DCI format 0-1 of the USS is the same as the number of bits of the DCI format 1-1 of the USS. ;

[0011] Optionally, the step of reducing the number of DCI formats with different numbers of detected bits includes: determining the priority of the DCI format; and reducing the number of bits of the DCI format according to the determined priority.

[0012] Optionally, the number of bits of a DCI format with a low priority is changed before the number of bits of a DCI format with a high priority, and when the number of DCI formats detected after changing the number of bits of the DCI format reaches a predetermined number, the changing of the number of bits of the DCI format is stopped, and / or, the priority of the DCI format is determined according to the service type of PDSCH and PUSCH scheduled by the DCI with the DCI format, and / or, the priority of the DCI format to which the DCI scheduling PDSCH or PUSCH for URLLC data transmission belongs is higher than the priority of the DCI format to which the DCI scheduling PDSCH or PUSCH for eMBB data transmission belongs.

[0013] Optionally, the method further includes: reducing the number of blind detections (ie, the number of detections) corresponding to each DCI format, and the number of detections corresponding to the DCI format may be referred to as the number of detections of the DCI format.

[0014] Optionally, the step of reducing the number of blind detections for each DCI format includes: reducing the number of blind detections for the DCI format based on priority, wherein the priority for reducing the number of blind detections for the DCI format is determined based on the service type of PDSCH and / or PUSCH, and / or, the number of blind detections for a low priority DCI format is reduced before the number of blind detections for a high priority DCI format, and when the complexity of DCI blind detection reaches a predetermined level after reducing the number of blind detections for the DCI format, stopping reducing the number of blind detections for the DCI format, and / or, the priority of the DCI format to which the DCI for scheduling PUSCH or PDSCH for URLLC data transmission belongs is higher than the priority of the DCI format to which the DCI for scheduling PUSCH or PDSCH for eMBB data transmission belongs.

[0015] Optionally, the step of limiting the number of PDCCH detection times and the number of non-overlapping CCE detection times includes: when the UE is configured with a service cell, or when the UE is configured with CA or DC, the maximum number of service cells supported by the CA capability or DC capability of the UE is a predetermined number, and the predetermined number is greater than or equal to the number of service cells configured by the UE, determining a first correspondence between the subcarrier space configuration of the PDCCH and the maximum number of PDCCH detection times in each time slot under each service cell configured by the UE, and a second correspondence between the subcarrier space configuration of the PDCCH and the maximum number of non-overlapping CCE detection times in each time slot under each service cell configured by the UE, and limiting the number of PDCCH detection times and the number of non-overlapping CCE detection times according to the determined result.

[0016] Optionally, the step of limiting the number of PDCCH detections and the number of non-overlapping CCE detections also includes: when the UE is configured with CA or DC, the maximum number of service cells supported by the CA capability or DC capability of the UE is a predetermined number, and the predetermined number is less than or equal to the number of downlink service cells indicated by the UE's detection capability for PDCCH And the UE is configured When there are downlink service cells, the number of downlink service cells indicated by the first corresponding relationship, the second corresponding relationship, and the detection capability And the number of downlink serving cells configured by the UE Determine if the UE is The sum of the maximum number of detections of PDCCHs of different sizes in each time slot in the downlink serving cell and the maximum number of detections of PDCCHs of different sizes in the downlink serving cell The maximum sum of the detection times of non-overlapping CCEs in each time slot of the downlink serving cells is determined, and the detection times of PDCCH and the detection times of non-overlapping CCEs are limited according to the determined result.

[0017] Optionally, the step of limiting the number of PDCCH detection times and the number of non-overlapping CCE detection times includes determining a third correspondence and a fourth correspondence in the following manner and limiting the number of PDCCH detection times and the number of non-overlapping CCE detection times according to the determined correspondence: when the UE is configured with a service cell supporting URLLC services, determining a third correspondence between the maximum number of detection times for PDCCHs of different sizes and the subcarrier space configuration of the PDCCH in each time slot under the service cell supporting the URLLC service, and determining a fourth correspondence between the maximum number of detection times for non-overlapping CCEs and the subcarrier space configuration of the PDCCH in each time slot under the service cell supporting the URLLC service.

[0018] Optionally, the step of limiting the number of PDCCH detections and the number of non-overlapping CCE detections also includes: when at least one of the following conditions is met, for a service cell that does not support RULLC service, determining the maximum number of detections of PDCCHs of different sizes and the maximum number of detections of non-overlapping CCEs in each time slot in the service cell that does not support RULLC service according to the first correspondence and the second correspondence, and determining the maximum number of detections of PDCCHs of different sizes and the maximum number of detections of non-overlapping CCEs in each time slot in the service cell that supports RULLC service according to the third correspondence and the fourth correspondence: Condition 1: The UE is configured with CA or DC, the UE supports URLLC service, the CA capability or DC capability of the UE supports a maximum of a predetermined number of downlink service cells, and the number of service cells configured by the UE to support URLLC service is less than or equal to the predetermined number; Condition 2: The UE is configured with CA or DC, the UE supports URLLC service, the CA capability or DC capability of the UE supports a maximum of a predetermined number of downlink service cells, and the UE is configured with The number of downlink service cells supporting URLLC services is less than number s1, and number s1 is less than or equal to the predetermined number; Condition 3: the UE is configured with CA or DC, the UE supports URLLC services, the CA capability or DC capability of the UE supports a maximum of a predetermined number of downlink service cells, the number of downlink service cells configured by the UE to support URLLC services is less than number s1, and the number of downlink service cells configured by the UE that do not support URLLC services is less than number or equal to number s2, number s1 is less than or equal to the predetermined number, and number s2 is less than or equal to the predetermined number; Condition 4: the UE is configured with CA or DC, the UE supports URLLC services, the CA capability or DC capability of the UE supports a maximum of a predetermined number of downlink service cells, the number of downlink service cells configured by the UE to support URLLC services is h1, the number of downlink service cells configured by the UE that do not support URLLC services is h2, and h1×(1+alpha)+h2 is less than or equal to the predetermined number or h1×alpha_1+h2 is less than or equal to, where alpha and alpha_1 are preset factors respectively.

[0019] Optionally, when CA or DC is configured on the UE, the UE supports URLLC services, the number of downlink serving cells supported by the CA capability or DC capability of the UE is greater than a predetermined number, and the PDCCH detection capability of the UE includes Downlink service cells, is greater than or equal to the predetermined number, and the UE is configured In the case of a downlink service cell, the step of limiting the number of PDCCH detections and the number of non-overlapping CCE detections also includes determining the maximum number of detections by at least one of the following methods, and limiting the corresponding number of detections according to the determination result: Method 1: Determine the maximum number of detections of PDCCHs of different sizes in each time slot of each downlink service cell and the maximum number of detections of non-overlapping CCEs in each time slot of each downlink service cell according to the first correspondence and the second correspondence; Method 2: Determine the maximum number of detections of PDCCHs of different sizes in each time slot of each downlink service cell and the maximum number of detections of non-overlapping CCEs in each time slot of each downlink service cell according to the third correspondence and the fourth correspondence; Method 3: Determine the maximum number of detections of PDCCHs of different sizes in each time slot of each downlink service cell supporting URLLC services and the maximum number of detections of non-overlapping CCEs in each time slot of each downlink service cell supporting URLLC services according to the first correspondence and the second correspondence, and determine the maximum number of detections of PDCCHs of different sizes in each time slot of each downlink service cell that does not support URLLC services and the maximum number of detections of non-overlapping CCEs in each time slot of each downlink service cell that does not support URLLC services according to the third correspondence and the fourth correspondence. Method 4: According to the first correspondence and the third correspondence, determine the maximum number of detections of PDCCHs of different sizes in each time slot of each downlink service cell that does not introduce URLLC services and the downlink service cell that introduces URLLC services, and according to the second correspondence and the fourth correspondence, determine the maximum number of detections of non-overlapping CCEs in each time slot of each downlink service cell that does not introduce URLLC services and the downlink service cell that introduces URLLC services; Method 5: Prioritize the PDCCH detection capability of the UE that supports the URLLC service based on a predetermined weighting factor α A portion of the capabilities corresponding to the number of downlink service cells weighted by the weighting factor α is allocated to the downlink service cell supporting the URLLC service, and the capabilities of the UE's PDCCH detection capabilities except for the said portion are allocated to the remaining downlink service cells; Method six: Prioritize based on a predetermined weighting factor a1 to allocate a portion of the UE's PDCCH detection capabilities corresponding to the number of downlink service cells supporting the URLLC service weighted by the weighting factor a1 to the downlink service cell supporting the URLLC service, and allocate the capabilities of the UE's PDCCH detection capabilities except for the said portion on average to each downlink service cell.

[0020] According to another exemplary embodiment of the present disclosure, a device for receiving downlink control information DCI is provided, including: a detection number determination unit, which determines the detection number corresponding to the DCI detection capability of the UE and the detection number corresponding to the DCI format; a detection number adjustment unit, which reduces the detection number corresponding to the DCI format, wherein the reduced detection number corresponding to the DCI format is less than or equal to the detection number corresponding to the DCI detection capability; and a DCI receiving unit, which receives the DCI according to the reduced detection number corresponding to the DCI format.

[0021] Optionally, the detection number adjustment unit includes: a bit number changing unit, which reduces the number of DCI formats with different detected bit numbers by changing the number of bits of at least one DCI format, so as to eliminate the detection number corresponding to the DCI format removed by changing the number of bits, and / or, a detection number limiting unit, which limits the detection number of the physical downlink control channel PDCCH and the detection number of non-overlapping control channel elements CCE.

[0022] Optionally, for a service cell introducing URLLC service transmission, the bit number changing unit reduces the number of detected DCI formats with different bit numbers by at least one of the following operations: increasing or decreasing the number of bits of the DCI format so that the number of bits of the DCI format 0-0 of the CSS is the same as the number of bits of the DCI format 1-0 of the CSS; increasing or decreasing the number of bits of the DCI format so that the number of bits of the DCI format 0-0 of the USS is the same as the number of bits of the DCI format 1-0 of the CSS; if the number of bits of the DCI format 0-1 of the USS is greater than the number of bits of the DCI format 0-0 of the USS or the number of bits of the DCI format 1-0 of the USS If the number of bits of DCI format 0-1 of USS is the same as the number of bits of DCI format 0-0 of USS or the number of bits of DCI format 1-0 of USS, 1 bit is added to the number of bits of DCI format 0-1 of USS so that the number of bits of DCI format 0-1 of USS is different from the number of bits of DCI format 0-0 of USS or the number of bits of DCI format 1-0 of USS; if the number of bits of DCI format 1-1 of USS is the same as the number of bits of DCI format 0-0 of USS or the number of bits of DCI format 1-0 of USS, 1 bit is added to the number of bits of DCI format 1-1 of USS so that the number of bits of DCI format 1-1 of USS is different from the number of bits of DCI format 0-0 of USS or the number of bits of DCI format 1-0 of USS,

[0023] Among them, if the above operations make the number of DCI formats with different numbers of bits detected by the UE in each service cell less than or equal to M, and the number of DCI formats with different numbers of bits scrambled by C-RNTI detected by the UE in each service cell is less than or equal to N, then the step of reducing the number of DCI formats with different numbers of bits detected is completed, wherein N≥4 and M≥3.

[0024] Optionally, for the service cell introducing URLLC service transmission, if the bit number changing unit does not make the number of DCI formats with different numbers of bits detected by the UE in each service cell less than or equal to M through at least one operation, and the number of DCI formats with different numbers of bits scrambled with C-RNTI detected by the UE in each service cell is less than or equal to N, then the following steps are performed in the order of step b, step c, step d, step e, step f and step a until the number of DCI formats with different numbers of bits detected by the UE in each service cell is less than or equal to M, and the number of DCI formats with different numbers of bits scrambled with C-RNTI detected by the UE in each service cell is less than or equal to N, wherein N≥4, M≥3: step a, by increasing or decreasing the number of bits of DCI format 0-x of USS or the number of bits of DCI format 1-x of USS, so that the number of bits of DCI format 0-x of USS is the same as the number of bits of DCI format 1-x of USS; step b, by increasing or decreasing the number of bits of DCI format 0-1 of USS, so that the number of bits of DCI format 0-1 of USS is the same as the number of bits of DCI format 0-x of USS or the number of bits of DCI format 1-x of USS; step c, by increasing or decreasing the number of bits of DCI format 1-1 of USS, so that the number of bits of DCI format 1-1 of USS is the same as the number of bits of DCI format 0-1 of USS. -x or the number of bits of DCI format 1-x of USS is the same; step d, if the difference between the number of bits of DCI format 0-1 of USS and the number of bits of DCI format 0-x of USS or the number of bits of DCI format 1-x of USS is less than or equal to the threshold value, then by increasing or decreasing the number of bits of DCI format 0-1 of USS, the number of bits of DCI format 0-1 of USS is made the same as the number of bits of DCI format 0-x of USS or the number of bits of DCI format 1-x of USS; if the difference between the number of bits of DCI format 0-1 of USS and the number of bits of DCI format 0-x of USS or the number of bits of DCI format 1-x of USS is greater than the threshold value, the UE stops detecting DCI format 0-1 of USS; step e, if the difference between the number of bits of DCI format 1-1 of USS and the number of bits of DCI format 0-x of USS or the number of bits of DCI format 1-x of USS is less than or equal to the threshold value, then the number of bits of DCI format 1-1 of USS is increased or decreased so that the number of bits of DCI format 1-1 of USS is the same as the number of bits of DCI format 0-x of USS or the number of bits of DCI format 1-x of USS; if the difference between the number of bits of DCI format 1-1 of USS and the number of bits of DCI format 0-x of USS or the number of bits of DCI format 1-x of USS is greater than the threshold value, the UE stops detecting DCI format 1-1 of USS;Step f, by increasing or decreasing the number of bits of the DCI format 0-1 of the USS or the number of bits of the DCI format 1-1 of the USS, so that the number of bits of the DCI format 0-1 of the USS is the same as the number of bits of the DCI format 1-1 of the USS. ;

[0025] Optionally, the bit number changing unit may determine the priority of the DCI format and reduce the number of bits of the DCI format according to the determined priority.

[0026] Optionally, the number of bits of a DCI format with a low priority is changed before the number of bits of a DCI format with a high priority, and when the number of DCI formats detected after changing the number of bits of the DCI format reaches a predetermined number, the changing of the number of bits of the DCI format is stopped, and / or, the priority of the DCI format is determined according to the service type of PDSCH and PUSCH scheduled by the DCI with the DCI format, and / or, the priority of the DCI format to which the DCI scheduling PDSCH or PUSCH for URLLC data transmission belongs is higher than the priority of the DCI format to which the DCI scheduling PDSCH or PUSCH for eMBB data transmission belongs.

[0027] Optionally, the device further includes: a blind detection number adjustment unit (or referred to as a detection number adjustment unit) to reduce the blind detection number of each DCI format.

[0028] Optionally, the blind detection number adjustment unit is used to: reduce the number of blind detections of the DCI format based on priority, wherein the priority for reducing the number of blind detections of the DCI format is determined based on the service type of PDSCH and / or PUSCH, and / or, the number of blind detections of a low priority DCI format is reduced before the number of blind detections of a high priority DCI format, and when the complexity of DCI blind detection reaches a predetermined level after reducing the number of blind detections of the DCI format, stop reducing the number of blind detections of the DCI format, and / or, the priority of the DCI format to which the DCI for scheduling PUSCH or PDSCH for URLLC data transmission belongs is higher than the priority of the DCI format to which the DCI for scheduling PUSCH or PDSCH for eMBB data transmission belongs.

[0029] Optionally, the detection time limiting unit is used to: when the UE is configured with a service cell, or when the UE is configured with CA or DC, and the maximum number of service cells supported by the CA capability or DC capability of the UE is a predetermined number, and the predetermined number is greater than or equal to the number of service cells configured by the UE, determine a first correspondence between the subcarrier space configuration of the PDCCH and the maximum number of detections of the PDCCH in each time slot under each service cell configured by the UE, and a second correspondence between the subcarrier space configuration of the PDCCH and the maximum number of detections of non-overlapping CCEs in each time slot under each service cell configured by the UE, and limit the number of detections of the PDCCH and the number of detections of non-overlapping CCEs according to the determined result.

[0030] Optionally, the detection number limiting unit is used to: when the UE is configured with CA or DC, the maximum number of service cells supported by the CA capability or DC capability of the UE is a predetermined number, and the predetermined number is less than or equal to the number of downlink service cells indicated by the UE's detection capability for PDCCH And the UE is configured When there are downlink service cells, the number of downlink service cells indicated by the first corresponding relationship, the second corresponding relationship, and the detection capability And the number of downlink serving cells configured by the UE Determine if the UE is The sum of the maximum number of detections of PDCCHs of different sizes in each time slot in the downlink serving cell and the maximum number of detections of PDCCHs of different sizes in the downlink serving cell The maximum sum of the detection times of non-overlapping CCEs in each time slot of the downlink serving cells is determined, and the detection times of PDCCH and the detection times of non-overlapping CCEs are limited according to the determined result.

[0031] Optionally, the detection number limiting unit is used to: determine the third correspondence and the fourth correspondence according to the following method and limit the number of PDCCH detections and the number of non-overlapping CCE detections according to the determined correspondence: when the UE is configured with a service cell supporting URLLC services, determine the third correspondence between the maximum number of detections of PDCCHs of different sizes and the subcarrier space configuration of the PDCCH in each time slot under the service cell supporting the URLLC service, and determine the fourth correspondence between the maximum number of detections of non-overlapping CCEs and the subcarrier space configuration of the PDCCH in each time slot under the service cell supporting the URLLC service.

[0032] Optionally, the detection time limiting unit is used for: when at least one of the following conditions is met, for a service cell that does not support RULLC service, determining the maximum number of detections for PDCCHs of different sizes and the maximum number of detections for non-overlapping CCEs in each time slot in the service cell that does not support RULLC service according to the first correspondence and the second correspondence, and determining the maximum number of detections for PDCCHs of different sizes and the maximum number of detections for non-overlapping CCEs in each time slot in the service cell that supports RULLC service according to the third correspondence and the fourth correspondence: Condition 1: The UE is configured with CA or DC, the UE supports URLLC service, the CA capability or DC capability of the UE supports a maximum of a predetermined number of downlink service cells, and the number of service cells configured by the UE to support URLLC service is less than or equal to the predetermined number; Condition 2: The UE is configured with CA or DC, the UE supports URLLC service, the CA capability or DC capability of the UE supports a maximum of a predetermined number of downlink service cells, and the downlink service cells configured by the UE to support URLLC service The number of cells is less than the number s1, and the number s1 is less than or equal to the predetermined number; Condition 3: The UE is configured with CA or DC, the UE supports URLLC services, the CA capability or DC capability of the UE supports a maximum of a predetermined number of downlink service cells, the number of downlink service cells configured by the UE to support URLLC services is less than the number s1, and the number of downlink service cells configured by the UE that do not support URLLC services is less than the number or equal to the number s2, the number s1 is less than or equal to the predetermined number, and the number s2 is less than or equal to the predetermined number; Condition 4: The UE is configured with CA or DC, the UE supports URLLC services, the CA capability or DC capability of the UE supports a maximum of a predetermined number of downlink service cells, the number of downlink service cells configured by the UE to support URLLC services is h1, the number of downlink service cells configured by the UE that do not support URLLC services is h2, and h1×(1+alpha)+h2 is less than or equal to the predetermined number or h1×alpha_1+h2 is less than or equal to the predetermined number, where alpha and alpha_1 are preset factors respectively.

[0033] Optionally, when CA or DC is configured on the UE, the UE supports URLLC services, the number of downlink serving cells supported by the CA capability or DC capability of the UE is greater than a predetermined number, and the PDCCH detection capability of the UE includes Downlink service cells, is greater than or equal to the predetermined number, and the UE is configured In the case of a downlink service cell, the detection number limiting unit is used to: determine the maximum detection number by at least one of the following methods, and limit the corresponding detection number according to the determination result: Method 1: According to the first corresponding relationship and the second corresponding relationship, determine the maximum detection number of PDCCHs of different sizes in each time slot of each downlink service cell, and the maximum detection number of non-overlapping CCEs in each time slot of each downlink service cell; Method 2: According to the third corresponding relationship and the fourth corresponding relationship, determine the maximum detection number of PDCCHs of different sizes in each time slot of each downlink service cell, and the maximum detection number of non-overlapping CCEs in each time slot of each downlink service cell; Method 3: According to the first corresponding relationship and the second corresponding relationship, determine the maximum detection number of PDCCHs of different sizes in each time slot of each downlink service cell supporting URLLC service, and the maximum detection number of non-overlapping CCEs in each time slot of each downlink service cell supporting URLLC service, and according to the third corresponding relationship and the fourth corresponding relationship, determine the maximum detection number of PDCCHs of different sizes in each time slot of each downlink service cell that does not support URLLC service, and the maximum detection number of non-overlapping CCEs in each time slot of each downlink service cell that does not support URLLC service. Method 4: According to the first correspondence and the third correspondence, determine the maximum number of detections of PDCCHs of different sizes in each time slot of each downlink service cell that does not introduce URLLC services and the downlink service cell that introduces URLLC services, and according to the second correspondence and the fourth correspondence, determine the maximum number of detections of non-overlapping CCEs in each time slot of each downlink service cell that does not introduce URLLC services and the downlink service cell that introduces URLLC services; Method 5: Prioritize the downlink service cell that supports URLLC services among the PDCCH detection capabilities of the UE based on a predetermined weighting factor α Method six: preferentially allocating a part of the capacity corresponding to the number of downlink service cells supporting URLLC service weighted by the weighting factor a1 among the UE's PDCCH detection capability based on a predetermined weighting factor a1 to the downlink service cell supporting URLLC service, and allocating the capacity of the UE's PDCCH detection capability except the said part to the remaining downlink service cells. Method six: preferentially allocating a part of the capacity corresponding to the number of downlink service cells supporting URLLC service weighted by the weighting factor a1 among the UE's PDCCH detection capability based on a predetermined weighting factor a1 to the downlink service cell supporting URLLC service, and evenly allocating the capacity of the UE's PDCCH detection capability except the said part to each downlink service cell.

[0034] According to another exemplary embodiment of the present disclosure, a system including at least one computing device and at least one storage device storing instructions is provided, wherein when the instructions are executed by the at least one computing device, the at least one computing device is prompted to perform the method described above.

[0035] According to another exemplary embodiment of the present disclosure, a computer-readable storage medium storing instructions is provided, wherein when the instructions are executed by at least one computing device, the at least one computing device is prompted to perform the method as described above.

[0036] Based on the method and device disclosed in the present invention, the UE can reduce the number of detections corresponding to the DCI format, and receive the DCI according to the reduced number of detections corresponding to the DCI format. More specifically, the UE can reduce the number of detected DCI formats by changing the number of bits of at least one DCI format to eliminate the number of detections corresponding to the DCI format removed by changing the number of bits, and / or limit the number of detections of the PDCCH and the number of detections of non-overlapping CCEs. Since the number of detections is reduced, the complexity of the DCI reception process (i.e., the DCI detection process) can be reduced, and the impact on enhanced mobile broadband (Enhanced Mobile Broadband, eMBB) data transmission can be reduced while ensuring that URLLC data transmission is not affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The above and other objects and features of the exemplary embodiments of the present disclosure will become more apparent through the following description in conjunction with the accompanying drawings which exemplarily illustrate the embodiments, in which:

[0038] Figure 1 A flowchart showing a method for receiving DCI according to an exemplary embodiment of the present disclosure is shown;

[0039] Figure 2 A block diagram of a device for receiving DCI according to an exemplary embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0040] Reference will now be made in detail to the embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like parts throughout. The embodiments will be described below with reference to the drawings in order to explain the present disclosure.

[0041] The UE may simultaneously send or receive uplink data or downlink data of different priorities in the same serving cell, or the UE may simultaneously send or receive uplink data or downlink data of different priorities in different serving cells, for example, simultaneously sending or receiving eMBB data and URLLC data, wherein the reliability of URLLC data transmission is higher than the reliability of eMBB data transmission. The PDSCH (or PUSCH) transmitting different types of data may be distinguished by DCI formats with different numbers of bits, or by cyclic redundancy checks (CRCs) encrypted with different radio network temporary identification values ​​(Radio Network Temporary Indicator, RNTI) (for example, cell radio network temporary identification value (Cell-RNTI, C-RNTI)).

[0042] In the present disclosure, considering that DCI formats with different numbers of bits can be used to distinguish PDSCH (or PUSCH), and the increase in the number of DCI formats with different numbers of bits will increase the number of detections corresponding to the newly added DCI formats, thereby increasing the complexity of the UE receiving (also understood as monitoring) DCI process, therefore, the complexity can be reduced by reducing the number of DCI formats with different numbers of bits detected (or to be detected). Specifically, the number of bits of two DCI formats with different numbers of bits can be made the same by increasing or decreasing the number of bits of the DCI format, thereby reducing the number of DCI formats with different numbers of bits, for example, by increasing or decreasing the number of bits of the DCI format to make the number of bits of DCI format 0-0 for scheduling PUSCH the same as the number of bits of DCI format 1-0 for scheduling PDSCH.

[0043] In addition, the detection of DCI in the PDCCH may include: tentatively demodulating and decoding the CSS and USS of the transmitted PDCCH, and checking the CRC scrambled by the RNTI to find the DCI in the PDCCH scheduled by the base station. Since the process of detecting DCI involves the detection of PDCCH and the detection of control channel elements (Control Channel Element, CCE), the complexity of the DCI reception process can be reduced by reducing the number of detections of PDCCH and CCE.

[0044] On this basis, the present disclosure provides a method for receiving DCI, such as Figure 1 As shown, the method may include steps 110 to 130 .

[0045] In step 110, the UE determines the number of detections corresponding to the DCI detection capability of the UE and the number of detections corresponding to the DCI format; in step 120, the UE reduces the number of detections corresponding to the DCI format, wherein the reduced number of detections corresponding to the DCI format is less than or equal to the number of detections corresponding to the DCI detection capability; in step 130, the UE receives the DCI according to the reduced number of detections corresponding to the DCI format.

[0046] As an example, the number of detections corresponding to the DCI detection capability of the UE and / or the number of detections corresponding to the DCI format may be determined by a protocol or by the configuration of the base station. Step 120 may reduce the number of detections corresponding to the DCI format, thereby reducing the complexity of DCI reception.

[0047] As an example, step 120 may include: reducing the number of DCI formats with different numbers of bits detected by changing the number of bits of at least one DCI format, so as to eliminate the number of detections corresponding to the DCI format removed by changing the number of bits from the total number of detections required. Here, the number of bits of the DCI format represents the number of bits required for the DCI having the DCI format, or the number of bits configured for the DCI. After executing step 110, the DCI may be detected according to a conventional DCI detection method or step 120. In the step of limiting the number of detections, the number of detections of the PDCCH and the number of detections of non-overlapping CCEs may be reduced. Before the step of limiting the number of detections, the number of DCI formats with different numbers of bits (including the number of bits of the DCI format) may be determined according to the conventional method, or the number of DCI formats with different numbers of bits may be determined according to the step of reducing the number of DCI formats with different numbers of bits detected.

[0048] As an example, the step of reducing the number of detected DCI formats having different numbers of bits may include: determining a priority of the DCI formats; and reducing the number of bits of the DCI formats according to the determined priority.

[0049] As an example, the number of bits of a DCI format with a low priority is changed before the number of bits of a DCI format with a high priority, and when the number of bits of a certain number (one or more) of DCI formats is changed and the number of detected DCI formats with different bit numbers reaches a predetermined number, the changing of the number of bits of the DCI format is stopped.

[0050] As an example, the priority of the DCI format is determined according to the service type (eg, transmission data type) of the PDSCH and PUSCH scheduled by the DCI having the DCI format.

[0051] As an example, the priority of the DCI format to which the DCI in the PDCCH scheduling URLLC data transmission belongs is higher than the priority of the DCI format to which the DCI in the PDCCH scheduling eMBB data transmission belongs.

[0052] Specifically, the UE may determine the DCI format detected by the UE (ie, the DCI format to which the DCI detected by the UE belongs) and the number of bits of the DCI format according to the priority of the DCI format to which the DCI carried in the PDCCH that schedules the PDSCH and PUSCH belongs.

[0053] Here, the DCI format priority can be determined according to the service type of the PDSCH and PUSCH scheduled by the DCI, and the service type of the PDSCH and PUSCH can be determined according to the data type transmitted by the PDSCH and PUSCH (for example, URLLC data or eMBB data). In the embodiments of the present disclosure, the priority of the DCI format is determined according to the service type only for illustrative purposes, which is not intended to limit the scope of protection of the present disclosure, that is, it is not excluded that other factors may cause DCI formats with different numbers of bits to have different priorities, that is, it is feasible to determine the priority of the DCI format according to other factors, such as configuring the priority of the DCI format through high-level signaling.

[0054] Here, the priority of the DCI format may represent the priority of the DCI format whose bit number does not change, that is, when it is necessary to reduce the number of DCI formats with different bit numbers by increasing or decreasing the number of bits of the DCI format, the number of bits of the DCI format with a low priority is changed first, and the number of bits of the DCI format with a high priority is changed later. For example, the DCI format to which the DCI in the PDCCH for scheduling URLLC data transmission belongs has a high priority, and the DCI format to which the DCI in the PDCCH for scheduling eMBB data transmission belongs has a low priority.

[0055] After reducing the number of DCI formats with different numbers of bits detected, the number of DCI formats with different numbers of bits detected can be determined, and the number of detections corresponding to each DCI format can be determined; after limiting the number of detections of PDCCH and the number of detections of non-overlapping CCEs, the number of detections of PDCCH and the number of detections of non-overlapping CCEs can be determined. In this case, DCI can be received according to the determined number of detections (for example, the number of DCI formats with different numbers of bits and / or the determined number of detections of PDCCH and the number of detections of non-overlapping CCEs), that is, step 130 is executed. The technical solution of adjusting the DCI format and the number of detections disclosed in the present invention is further described in detail below through preferred embodiments.

[0056] Embodiment 1

[0057] In this embodiment, the base station configures multiple DCI formats that need to be detected for each UE (for example, DCI format based on CSS (referred to as CSS DCI format) 0-0, DCI format 1-0 of CSS, DCI format 2-0 of CSS, DCI format 2-1 of CSS, DCI format 2-2 of CSS, DCI format 2-3 of CSS, DCI format based on USS (referred to as USS DCI format) 0-0, DCI format 1-0 of USS, DCI format 0-1 of USS, DCI format 1-1 of USS, newly added DCI format 0-x (used for scheduling PUSCH for introducing URLLC data transmission), newly added DCI format 1-x (used for scheduling PDSCH for introducing URLLC data transmission)), and determines the total number of bits of each DCI format according to the number of bits required (or configured) for each information field in each DCI format (the total number of bits of different DCI formats may be different).

[0058] At present, for the New Radio (NR) system, the maximum number of different DCI formats (different DCI formats have different numbers of bits) detected by the UE in each serving cell is 4, and the maximum number of DCI formats with different numbers of bits scrambled by C-RNTI detected by the UE in each serving cell is 3. When the serving cell introduces URLLC service transmission, the detection capability of the serving cell can be enhanced. For example, the maximum number of different DCI formats detected by the UE in each serving cell that introduces URLLC service transmission is N, and the maximum number of different DCI formats scrambled by C-RNTI detected by the UE in each serving cell that introduces URLLC service transmission is M, where N and M are positive integers, and N and M can be configured by high-level signaling or determined in a protocol preset manner, where N≥4 and M≥3.

[0059] For the NR system, the number of bits of the DCI format may be changed (also referred to as aligning the number of bits of some DCI formats) by at least one of the following items:

[0060] 1. Make the number of bits of DCI format 0-0 of CSS and the number of bits of DCI format 1-0 of CSS the same by increasing or decreasing the number of bits of DCI format;

[0061] 2. Make the number of bits of DCI format 0-0 of USS and the number of bits of DCI format 1-0 of CSS the same by increasing or decreasing the number of bits of DCI format;

[0062] 3. If the number of bits of the DCI format 0-1 of the USS is the same as the number of bits of the DCI format 0-0 of the USS or the number of bits of the DCI format 1-0, then 1 bit is added to the number of bits of the DCI format 0-1 of the USS so that the number of bits of the DCI format 0-1 of the USS is different from the number of bits of the DCI format 0-0 of the USS or the number of bits of the DCI format 1-0, so as to distinguish the DCI format 0-1 of the USS from the DCI format 0-0 of the USS or the DCI format 1-0 of the USS, wherein the value of the added 1 bit is "0" or other feasible values;

[0063] 4. If the number of bits of the DCI format 1-1 of the USS is the same as the number of bits of the DCI format 0-0 of the USS or the number of bits of the DCI format 1-0, then one bit is added to the number of bits of the DCI format 1-1 of the USS so that the number of bits of the DCI format 1-1 of the USS is different from the number of bits of the DCI format 0-0 of the USS or the number of bits of the DCI format 1-0, so as to distinguish the DCI format 1-1 of the USS from the DCI format 0-0 of the USS or the DCI format 1-0 of the USS, and the value of the added one bit is "0" or other feasible values;

[0064] Among them, if the number of different DCI formats detected by the UE in each service cell is less than or equal to 4, and the number of different DCI formats scrambled with C-RNTI detected by the UE in each service cell is less than or equal to 3, the bit alignment processing of the DCI format is completed, or it is called the completion of the bit alignment processing of the DCI format.

[0065] If the above processing (1 to 4) still cannot make the number of different DCI formats detected by the UE in each serving cell less than or equal to 4, and the number of different DCI formats scrambled with C-RNTI detected by the UE in each serving cell is less than or equal to 3, the number of different DCI formats detected can be reduced by making the number of bits of DCI format 0-0 of USS or the number of bits of DCI format 1-0 of USS the same as the number of bits of DCI format 0-0 of CSS or the number of bits of DCI format 1-0 of CSS.

[0066] The above describes the DCI detection or reception processing (i.e., the bit alignment processing of the DCI format) for the service cell that does not introduce URLLC service transmission. For the service cell that introduces URLLC service transmission, the corresponding processing can be performed to ensure that: the maximum number of different DCI formats detected by the UE in each service cell is N, and the maximum number of different DCI formats encrypted with C-RNTI detected by the UE in each service cell is M, where N≥4 and M≥3.

[0067] The corresponding processing may include at least one of the following items:

[0068] 1. Make the number of bits of DCI format 0-0 of CSS and the number of bits of DCI format 1-0 of CSS the same by increasing or decreasing the number of bits of DCI format;

[0069] 2. Make the number of bits of DCI format 0-0 of USS and the number of bits of DCI format 1-0 of CSS the same by increasing or decreasing the number of bits of DCI format;

[0070] 3. If the number of bits of the DCI format 0-1 of USS is the same as the number of bits of the DCI format 0-0 of USS or the number of bits of the DCI format 1-0 of USS, then 1 bit is added to the number of bits of the DCI format 0-1 of USS to make the number of bits of the DCI format 0-1 of USS different from the number of bits of the DCI format 0-0 of USS or the number of bits of the DCI format 1-0 of USS, so as to distinguish the DCI format 0-1 of USS from the DCI format 0-0 of USS or the DCI format 1-0 of USS, and the value of the added 1 bit is "0" or other feasible values;

[0071] 4. If the number of bits of the DCI format 1-1 of the USS is the same as the number of bits of the DCI format 0-0 of the USS or the number of bits of the DCI format 1-0 of the USS, then one bit is added to the number of bits of the DCI format 1-1 of the USS so that the number of bits of the DCI format 1-1 of the USS is different from the number of bits of the DCI format 0-0 of the USS or the number of bits of the DCI format 1-0 of the USS, so as to distinguish the DCI format 1-1 of the USS from the DCI format 0-0 of the USS or the DCI format 1-0 of the USS, and the value of the added one bit is "0" or other feasible values;

[0072] Among them, if the maximum number of different DCI formats detected by the UE in each service cell is less than or equal to M, and the maximum number of different DCI formats encrypted with C-RNTI detected by the UE in each service cell is less than or equal to N, then the corresponding processing is executed, or it is called completing the processing.

[0073] For the service cells that introduce URLLC service transmission, if the above processing (1 to 4) still cannot make the maximum number of different DCI formats detected by the UE in each service cell less than or equal to M, and the maximum number of different DCI formats encrypted with C-RNTI detected by the UE in each service cell is less than or equal to N, then at least one of the following steps a to f can be performed.

[0074] As an example, steps a to f may be performed in order, and this order may be preset by the protocol or configured by high-level signaling, for example, the order is: b→c→d→e→f→a. In the process of performing the steps in this order, if the above conditions are met after a certain step is performed (i.e., the maximum number of different DCI formats detected by the UE in each serving cell is M, and the maximum number of different DCI formats scrambled with C-RNTI detected by the UE in each serving cell is N), the subsequent steps are no longer performed.

[0075] The reason for setting the order of step a to be executed last is as follows: the number of bits of DCI format 0-x or the number of bits of DCI format 1-x of step a (DCI format 0-x or DCI format 1-x can schedule PDSCH or PUSCH for URLLC data transmission), URLLC services have high requirements for latency and reliability, therefore, it is best not to reduce the number of DCI formats by changing the number of bits of the following DCI formats, the DCI belonging to the said DCI format is used to schedule PDSCH or PUSCH, and the PDSCH or PUSCH is used for URLLC data transmission, such DCI can be referred to as DCI for scheduling URLLC data transmission. In the process of changing the number of bits of the DCI format based on priority, setting the priority of DCI format 0-x or 1-x to which the DCI for scheduling URLLC data transmission belongs to as the highest is also based on the above reasons.

[0076] Step a, by increasing or decreasing the number of bits of the DCI format 0-x of the USS or the number of bits of the DCI format 1-x of the USS, so that the number of bits of the DCI format 0-x of the USS is the same as the number of bits of the DCI format 1-x of the USS, this step may affect the UE's reception performance for the DCI used to schedule URLLC data transmission, thereby affecting the UE's performance of transmitting URLLC data;

[0077] Step b, by increasing or decreasing the number of bits of DCI format 0-1 of USS, the number of bits of DCI format 0-1 of USS is made the same as the number of bits of DCI format 0-x of USS or the number of bits of DCI format 1-x of USS. This step can reduce the number of different DCI formats detected by UE, but may affect the performance of UE transmitting eMBB data;

[0078] Step c, by increasing or decreasing the number of bits of DCI format 1-1 of the USS, the number of bits of DCI format 1-1 of the USS is made the same as the number of bits of DCI format 0-x of the USS or the number of bits of DCI format 1-x of the USS. This step can reduce the number of different DCI formats detected by the UE, but may affect the performance of the UE in transmitting eMBB data;

[0079] Step d: If the difference between the number of bits of DCI format 0-1 of USS and the number of bits of DCI format 0-x of USS or the number of bits of DCI format 1-x of USS is less than or equal to the threshold value L (L can be configured by high-layer signaling, or preset by protocol, or calculated based on specific parameters, or obtained by other feasible methods, which is not limited by the present disclosure), then by increasing or decreasing the number of bits of DCI format 0-1 of USS, the number of bits of DCI format 0-1 of USS is made the same as the number of bits of DCI format 0-x of USS or the number of bits of DCI format 1-x of USS. This step can reduce the number of different DCI formats detected by UE, but may affect the UE to transmit eMBB data performance; in addition, if the difference between the number of bits of DCI format 0-1 of USS and the number of bits of DCI format 0-x of USS or the number of bits of DCI format 1-x of USS is greater than the threshold value L, the UE stops detecting DCI format 0-1 of USS (for example, stops changing the number of bits of DCI format 0-1 of USS), because if the number of bits of DCI format 0-1 of USS is made the same as the number of bits of DCI format 0-x of USS or the number of bits of DCI format 1-x of USS by reducing the number of bits of DCI format 0-1 of USS, it may cause DCI format 0-1 of USS to be unable to work (for example, cannot be used to schedule PUSCH or PDSCH);

[0080] Step e: if the difference between the number of bits of DCI format 1-1 of USS and the number of bits of DCI format 0-x of USS or the number of bits of DCI format 1-x of USS is less than or equal to the threshold value L, then the number of bits of DCI format 1-1 of USS is increased or decreased to make the number of bits of DCI format 1-1 of USS the same as the number of bits of DCI format 0-x of USS or the number of bits of DCI format 1-x of USS. This step can reduce the number of different DCI formats detected by UE, but may affect the UE's transmission of eMBB data. performance; in addition, if the difference between the number of bits of DCI format 1-1 of USS and the number of bits of DCI format 0-x of USS or the number of bits of DCI format 1-x of USS is greater than the threshold value L, the UE stops detecting DCI format 1-1 of USS, because if the number of bits of DCI format 1-1 of USS is made the same as the number of bits of DCI format 0-x of USS or the number of bits of DCI format 1-x of USS by reducing the number of bits of DCI format 1-1 of USS, DCI format 0-1 of USS cannot work;

[0081] Step f: increasing or decreasing the number of bits of DCI format 0-1 of USS or the number of bits of DCI format 1-1 of USS so that the number of bits of DCI format 0-1 of USS is the same as the number of bits of DCI format 1-1 of USS.

[0082] In this embodiment, the complexity of DCI blind detection is reduced by reducing the number of different DCI formats (different DCI formats have different numbers of bits) detected by the UE in each serving cell, especially ensuring that after adding the DCI format for URLLC data transmission, the complexity of DCI blind detection does not exceed the complexity supported by the UE. In addition, the number of blind detections for at least one DCI format can be reduced (the number of blind detections or the number of blind detections of the DCI format indicates the number of blind detections (or detections) of the DCI having the DCI format), so that the total DCI blind detection complexity of the UE does not exceed the complexity supported by the UE, and the number of blind detections of at least one DCI format can be reduced according to the priority described above, for example, first reducing the number of blind detections of DCI in a DCI format that is not used for URLLC data transmission, and then reducing the number of blind detections of DCI in a DCI format used for URLLC data transmission (i.e., the number of DCI blind detections of such DCI, the DCI is used to schedule PUSCH or PDSCH, and the PUSCH or PDSCH is used for URLLC data transmission), and the priority of the DCI format can be configured through high-level signaling.

[0083] As an example, the priority for reducing the number of blind detections of a DCI format is determined based on the service type of PDSCH and / or PUSCH, and / or the number of blind detections of a low-priority DCI format is reduced before the number of blind detections of a high-priority DCI format, and when the complexity of DCI blind detection reaches a predetermined level after reducing the number of blind detections of the DCI format, the reduction of the number of blind detections of the DCI format is stopped, and / or the priority of the DCI format to which the DCI for scheduling PUSCH or PDSCH for URLLC data transmission belongs is higher than the priority of the DCI format to which the DCI for scheduling PUSCH or PDSCH for eMBB data transmission belongs.

[0084] Embodiment 2

[0085] In order to ensure that the DCI blind detection complexity of the UE is not too large (for example, to ensure that the DCI blind detection complexity is lower than the maximum DCI blind detection complexity supported by the UE), the number of PDCCH detections of each UE can be limited. For a serving cell, the maximum number of times a UE detects PDCCHs of different sizes in each time slot is related to the subcarrier spatial configuration (μ) of the PDCCH. Specifically, for each serving cell, the maximum number of times a UE detects PDCCHs of different sizes in each time slot is The corresponding relationship with the subcarrier space configuration (μ) of the PDCCH is shown in Table 1.

[0086] Table 1

[0087]

[0088] In addition, the maximum number of times that the UE detects non-overlapping CCEs can also be limited. For a serving cell, the maximum number of times that the UE detects non-overlapping CCEs in each time slot is related to the subcarrier space configuration (μ) of the PDCCH. Specifically, for each serving cell, the maximum number of times that non-overlapping CCEs are detected in each time slot is The corresponding relationship with the subcarrier space configuration (μ) of the PDCCH is shown in Table 2.

[0089] Table 2

[0090]

[0091] The above maximum number of times the UE detects PDCCH and the maximum number of times the UE detects non-overlapping CCEs are determined when one serving cell is configured for the UE.

[0092] When the UE is configured with carrier aggregation (CA) or dual connectivity (DC), the UE's CA capability or DC capability supports a maximum of a predetermined number (e.g., 4) of downlink serving cells, and the UE is configured with a number of downlink serving cells less than or equal to the predetermined number, the maximum number of detections of PDCCHs of different sizes by the UE in each time slot of each downlink serving cell Maximum number of detections of non-overlapping CCEs Determined according to the subcarrier space configuration μ of each downlink serving cell, that is, according to the subcarrier space configuration μ and the subcarrier space configuration μ of each downlink serving cell respectively given in Table 1 and Table 2 above and The predetermined correspondence is determined.

[0093] When CA or DC is configured on the UE, and the CA capability or DC capability of the UE supports more than a predetermined number (e.g., 4) of downlink serving cells, the UE indicates, through a parameter (e.g., pdcch-BlindDetectionCA), that the UE is capable of detecting PDCCH. Downlink serving cells ( is greater than or equal to the predetermined number, for example, 4), and the UE is configured In the case of a downlink serving cell with a subcarrier space configured as μ, the UE The sum of the maximum number of detections of PDCCHs of different sizes in each time slot of a serving cell is The maximum number of non-overlapping CCE detections by the UE in each time slot of a serving cell with subcarrier space configuration of μ is in, Indicates the number of downlink serving cells configured by the UE, and the subcarrier space configuration of these downlink serving cells is μ, It represents the number of downlink serving cells configured by the UE when the subcarrier space configuration value μ=j.

[0094] The above describes that each service cell is configured with only one downlink bandwidth part (Bandwidth Part, BWP), or each service cell is configured with multiple downlink BWPs, but there is only one downlink activated BWP at the same time, and the above μ is the subcarrier space configuration of the downlink activated BWP.

[0095] In each service cell where URLLC service transmission is introduced, in order to meet the requirements of URLLC service for latency and reliability, the maximum number of detections of PDCCHs of different sizes (i.e., DCI formats with different numbers of bits) and the maximum number of detections of non-overlapping CCEs by the UE in each time slot may be increased. For example, the maximum number of detections of PDCCHs of different sizes by the UE in each time slot is shown in Table 3, and the maximum number of detections of non-overlapping CCEs by the UE in each time slot is shown in Table 4.

[0096] The maximum number of PDCCH detections by the UE and the maximum number of non-overlapping CCE detections by the UE shown in Table 3 and Table 4 are determined when the UE is configured with a serving cell and the serving cell introduces the transmission of URLLC services.

[0097] Table 3

[0098]

[0099] Table 4

[0100]

[0101] When the UE is configured with CA or DC, and when the number of downlink service cells configured by the UE meets certain conditions, the operation of determining the maximum number of detection times of PDCCHs of different sizes by the UE in each time slot and the maximum number of detection times of non-overlapping CCEs by the UE in each time slot may include at least one of the following methods, so that the maximum number of detection times for PDCCHs and the maximum number of detection times for non-overlapping CCEs may be limited according to the determination result.

[0102] In an exemplary embodiment of the present disclosure, the above Tables 1 to 4 may represent first to fourth corresponding relationships, respectively.

[0103] Method 1:

[0104] When the UE is configured with CA or DC, the UE supports the detection of PDCCH for introducing URLLC service transmission (that is, PDCCH can introduce or support URLLC service transmission, and the UE supports the detection of such PDCCH), the CA capability or DC capability of the UE supports a maximum of a predetermined number (for example, s, where the s value is configured by high-level signaling or preset by the protocol, or calculated by the number of cells supporting URLLC service transmission) of downlink service cells, and the UE is configured with less than or equal to the predetermined number of downlink service cells, the maximum number of detections of PDCCHs of different sizes by the UE in each time slot of each downlink service cell Maximum number of detections of non-overlapping CCEs The subcarrier space configuration μ of each downlink serving cell and the introduction of the URLLC service by each serving cell are determined respectively, that is, for cells without introducing URLLC services, the subcarrier space configuration μ and the subcarrier space configuration μ of each downlink serving cell respectively given in Table 1 and Table 2 are determined respectively. and The predetermined corresponding relationship is determined as follows: and For the cell introducing URLLC service, the subcarrier space configuration μ and and The predetermined corresponding relationship is determined as follows: and

[0105] Method 2:

[0106] When the UE is configured with CA or DC, the UE supports detection of PDCCH for introducing URLLC service transmission, the CA capability or DC capability of the UE supports a predetermined number (for example, s) of downlink service cells at most, the number of service cells configured by the UE to support URLLC service transmission is less than s1 (s1 is less than or equal to s), and the number of service cells configured by the UE is less than or equal to the predetermined number, the maximum number of detections of PDCCHs of different sizes by the UE in each time slot of each downlink service cell Maximum number of detections of non-overlapping CCEs The subcarrier space configuration μ of each downlink serving cell and the introduction of the URLLC service by the serving cell are respectively determined, that is, for a cell that does not introduce the URLLC service, the subcarrier space configuration μ of each downlink serving cell given in Table 1 and Table 2 are respectively determined. and The predetermined corresponding relationship is determined as follows: and For the cell introducing URLLC service, the subcarrier space configuration μ and and The predetermined corresponding relationship is determined as follows: and

[0107] Method 3:

[0108] When the UE is configured with CA or DC, the UE supports the detection of PDCCH for the introduction of URLLC service transmission, the CA capability or DC capability of the UE supports a maximum of a predetermined number (for example, s) of downlink service cells, the number of service cells configured by the UE to support URLLC service transmission is less than s1 (s1 is less than or equal to s), and the number of service cells configured by the UE that do not introduce URLLC service transmission is less than or equal to s2 (s2 is less than or equal to s), the maximum number of detections of PDCCHs of different sizes by the UE in each time slot of each downlink service cell Maximum number of detections of non-overlapping CCEs The determination is made according to the subcarrier space configuration μ of each downlink serving cell and whether the serving cell introduces URLLC services. That is, for cells that do not introduce URLLC services, the subcarrier space configuration μ and the subcarrier space configuration μ of each downlink serving cell are respectively given in Tables 1 and 2 above. and The predetermined corresponding relationship is determined as follows: and For the cell introducing URLLC service, the subcarrier space configuration μ and and The predetermined corresponding relationship is determined as follows: and

[0109] Method 4:

[0110] When CA or DC is configured for the UE, the UE supports detection of PDCCH for introducing URLLC service transmission, the CA capability or DC capability of the UE supports a maximum of a predetermined number (for example, s) of downlink service cells, the number of service cells configured for the UE supporting URLLC service transmission is h1, and the number of service cells configured for the UE without introducing URLLC service transmission is h2, and when h1*(1+alpha)+h2 (alpha is a factor, alpha can be configured through high-level signaling, or preset through a protocol, or obtained through calculation based on parameters, or obtained through other methods, which are not limited here) is less than or equal to the predetermined number (for example, s) of downlink service cells, or when h1*alpha_1+h2 (alpha_1 is a factor, alpha_1 can be configured through high-level signaling, or preset through a protocol, or obtained through calculation based on parameters, or obtained through other methods, which are not limited here) is less than or equal to the predetermined number (for example, s) of downlink service cells, the maximum number of detections of PDCCHs of different sizes by the UE in each time slot of each downlink service cell Maximum number of detections of non-overlapping CCEs The determination is made according to the subcarrier space configuration μ of each downlink serving cell and whether the serving cell introduces URLLC services. That is, for cells that do not introduce URLLC services, the subcarrier space configuration μ and the subcarrier space configuration μ of each downlink serving cell are respectively given in Tables 1 and 2 above. and The predetermined corresponding relationship is determined as follows: and For the cell introducing URLLC service, the subcarrier space configuration μ and and The predetermined corresponding relationship is determined as follows: and

[0111] When the UE is configured with CA or DC, and the number of downlink service cells configured by the UE does not meet certain conditions (the certain conditions include any one of the conditions described above, for example, the condition is: the CA capability or DC capability of the UE supports a maximum of a predetermined number (for example, s, where the s value is configured by high-level signaling or preset by the protocol, or calculated by introducing the number of cells for PDCCH used for URLLC service transmission) of downlink service cells, and the UE is configured with downlink service cells greater than the predetermined number), determining the maximum number of times the UE detects PDCCHs of different sizes in each time slot and the maximum number of times the UE detects non-overlapping CCEs in each time slot includes at least one of the following methods.

[0112] Method 1:

[0113] When CA or DC is configured on the UE, the UE supports detection of PDCCH for URLLC service transmission, the CA capability or DC capability of the UE supports more than a predetermined number (e.g., s) of downlink serving cells, and the PDCCH detection capability indicated to the UE by a parameter (e.g., pdcch-BlindDetectionCA) is Downlink serving cells ( is greater than or equal to the predetermined number, for example, s), and the UE is configured In the case of a downlink serving cell with a subcarrier space configured as μ, the UE The sum of the maximum number of detections of PDCCHs of different sizes in each time slot of a serving cell is Each subcarrier space is configured as μ. The maximum number of PDCCH detections of different sizes in each time slot of the serving cell is UE is configured with μ in subcarrier space The sum of the maximum number of detections of non-overlapping CCEs in each time slot of a serving cell is Each subcarrier space is configured as μ. The maximum number of non-overlapping CCE detections in each time slot of the serving cell is This method does not increase the number of PDCCH detections of different sizes in each time slot in the service cell that introduces URLLC service transmission and the maximum number of non-overlapping CCE detections in each time slot.

[0114] Method 2:

[0115] When CA or DC is configured on the UE and the UE supports PDCCH detection for URLLC service transmission, the UE's CA capability or DC capability supports more than a predetermined number (e.g., s) of downlink serving cells, the UE indicates the UE's ability to detect PDCCH through a parameter (e.g., pdcch-BlindDetectionCA). Downlink serving cells ( is greater than or equal to the predetermined number, for example, s), and the UE is configured In the case of a downlink serving cell with a subcarrier space configured as μ, the UE The sum of the maximum number of detections of PDCCHs of different sizes in each time slot of a serving cell is For the service cell that introduces PDCCH detection of URLLC service transmission, each subcarrier space is configured as μ. The maximum number of PDCCH detections with different sizes in each time slot of the service cell is For the service cell without PDCCH detection for URLLC service transmission, each subcarrier space is configured as μ. The maximum number of PDCCH detections with different sizes in each time slot of the service cell is UE is configured with μ in subcarrier space The sum of the maximum number of detections of non-overlapping CCEs in each time slot of a serving cell is For the service cell that introduces PDCCH detection of URLLC service transmission, each subcarrier space is configured as μ. The maximum number of detections of non-overlapping CCEs in each time slot of the service cell is For the service cell without PDCCH detection for URLLC service transmission, each subcarrier space is configured as μ. The maximum number of detections of non-overlapping CCEs in each time slot of the service cell is

[0116] Method 3:

[0117] When CA or DC is configured on the UE, the UE supports detection of PDCCH for introducing URLLC service transmission, the CA capability or DC capability of the UE supports more than a predetermined number (e.g., s) of downlink serving cells, and the UE indicates the UE's ability to detect PDCCH through a parameter (e.g., pdcch-BlindDetectionCA). Downlink serving cells ( is greater than or equal to the predetermined number, for example, s), and the UE is configured In the case of a downlink serving cell with a subcarrier space configured as μ, the UE The sum of the maximum number of detections of PDCCHs of different sizes in each time slot of a serving cell is related to the following: Whether there is a serving cell that needs to detect the PDCCH for URLLC service transmission among the serving cells, for example, for In the downlink service cell with the subcarrier space configuration of μ, no service cell for detecting the PDCCH used for URLLC service transmission is introduced, γ μ =1, for There is at least one service cell that introduces detection of the PDCCH used for URLLC service transmission in the downlink service cells with subcarrier space configuration of μ, γ μ ≥1. For the service cell that introduces PDCCH detection for URLLC service transmission, each subcarrier space is configured as μ. The maximum number of PDCCH detections of different sizes in each time slot of the service cell is For the service cell without PDCCH detection for URLLC service transmission, each subcarrier space is configured as μ. The maximum number of PDCCH detections with different sizes in each time slot of the service cell is Among them, γ μ The value is configured by high-level signaling or preset by the protocol, or is calculated by the number of cells detected for PDCCH used for URLLC service transmission.

[0118] UE is configured with μ in subcarrier space The sum of the maximum number of non-overlapping CCE detections in each time slot of the serving cells and the subcarrier space configuration of μ Whether there is a serving cell for detecting the PDCCH for URLLC service transmission in the serving cells, for example, for There is no service cell for detecting the PDCCH used for URLLC service transmission in the downlink service cell with the subcarrier space configuration of μ, β μ =1, for Among the downlink serving cells with subcarrier space configuration μ, there is at least one serving cell that detects the PDCCH for URLLC service transmission, β μ ≥1. For the service cell that introduces PDCCH detection of URLLC service transmission, each subcarrier space is configured as μ. The maximum number of detections of non-overlapping CCEs in each time slot of the service cell is For the service cell without PDCCH detection for URLLC service transmission, each subcarrier space is configured as μ. The maximum number of detections of non-overlapping CCEs in each time slot of the service cell is Among them, β μ The value is configured by high-level signaling or preset by the protocol, or is calculated by the number of cells detected for PDCCH used for URLLC service transmission.

[0119] Method 4:

[0120] When CA or DC is configured on the UE, the UE supports detection of PDCCH for introducing URLLC service transmission, the CA capability or DC capability of the UE supports more than a predetermined number (e.g., s) of downlink serving cells, and the UE indicates the UE's ability to detect PDCCH through a parameter (e.g., pdcch-BlindDetectionCA). Downlink serving cells ( is greater than or equal to the predetermined number, for example, s), and the UE is configured In the case of a downlink serving cell with a subcarrier space configured as μ, the UE The sum of the maximum number of detections of PDCCHs of different sizes in each time slot of a serving cell is related to the following: Whether there is a serving cell that needs to detect the PDCCH for URLLC service transmission among the serving cells, for example,

[0121] for The number of service cells introduced for detecting the PDCCH used for URLLC service transmission in the downlink service cell with the subcarrier space configuration of μ is for The number of service cells that do not introduce detection of PDCCH for URLLC service transmission in the downlink service cells with subcarrier space configuration of μ is γ μ ≥1. For the service cell that introduces PDCCH detection for URLLC service transmission, each subcarrier space is configured as μ. The maximum number of PDCCH detections of different sizes in each time slot of the service cell is For the service cell without PDCCH detection for URLLC service transmission, each subcarrier space is configured as μ. The maximum number of PDCCH detections with different sizes in each time slot of the service cell is Among them, γ μ The value is configured by higher-layer signaling or preset by the protocol.

[0122] UE is configured with μ in subcarrier space The sum of the maximum number of non-overlapping CCE detections in each time slot of the serving cells and the subcarrier space configuration of μ It is related to whether there is a service cell in the service cell that detects the PDCCH used for URLLC service transmission.

[0123] For example,

[0124]

[0125] for The number of service cells introduced for detecting the PDCCH used for URLLC service transmission in the downlink service cell with the subcarrier space configuration of μ is for The number of service cells that do not introduce detection of PDCCH for URLLC service transmission in the downlink service cells with subcarrier space configuration of μ is β μ ≥1.

[0126] For the service cell that introduces PDCCH detection of URLLC service transmission, each subcarrier space is configured as μ. The maximum number of detections of non-overlapping CCEs in each time slot of the service cell is For the service cell without PDCCH detection for URLLC service transmission, each subcarrier space is configured as μ. The maximum number of detections of non-overlapping CCEs in each time slot of the service cell is Among them, β μ The value is configured by higher-layer signaling or preset by the protocol.

[0127] Method 5:

[0128] When CA or DC is configured on the UE, the UE supports detection of PDCCH for introducing URLLC service transmission, the CA capability or DC capability of the UE supports more than a predetermined number (e.g., s) of downlink serving cells, and the UE indicates the UE's ability to detect PDCCH through a parameter (e.g., pdcch-BlindDetectionCA). downlink service cells, first, the maximum number of PDCCH detection times of the service cells for the detection of PDCCH for the introduction of URLLC service transmission is met, and the remaining UE PDCCH detection capabilities are reallocated to the service cells for the detection of PDCCH for the introduction of URLLC service transmission. For example, the UE PDCCH detection capability is downlink service cells, the number of service cells for detecting PDCCHs for URLLC service transmission is p_URLLC, and the UE detection capability of the service cells for detecting PDCCHs for URLLC service transmission is p_URLLC×α, where α is a weighting factor for detecting PDCCHs for URLLC service transmission, which can be preset by the protocol or configured by high-level signaling. The remaining UE detection capability of PDCCH is The remaining UE PDCCH detection capability is allocated to the service cell configured for UE PDCCH detection that does not introduce URLLC service transmission. By adopting this method, by setting an appropriate weighting factor α, the PDCCH detection capability can be preferentially allocated to PDCCH detection for high-priority service scheduling, thereby ensuring the transmission of high-priority services.

[0129] Method 6:

[0130] When CA or DC is configured on the UE, the UE supports detection of PDCCH for introducing URLLC service transmission, the CA capability or DC capability of the UE supports more than a predetermined number (e.g., s) of downlink serving cells, and the UE indicates the UE's ability to detect PDCCH through a parameter (e.g., pdcch-BlindDetectionCA). Downlink service cells, first, the service cells that meet the requirements of detecting PDCCH for URLLC service transmission have the capability of detecting PDCCH for scheduling URLLC service. The capability of detecting PDCCH for scheduling URLLC service allocated to each cell is a1. The remaining UE detection capability is allocated to the configured service cells. The capability of detecting PDCCH allocated to each cell is b1. The detection capability of PDCCH for URLLC service transmission is a1+b1, and the detection capability of PDCCH for service cells that do not introduce URLLC service transmission is b1. For example, the UE detection capability is downlink service cells, the number of service cells that introduce PDCCH detection for URLLC service transmission is p_URLLC, the number of service cells that do not introduce PDCCH detection for URLLC service transmission is p_non-URLLC, the PDCCH detection capability for scheduling URLLC services allocated to the detection of PDCCH for URLLC service transmission of each service cell is a1, the total PDCCH detection capability for scheduling URLLC services allocated to the detection of PDCCH for URLLC service transmission of all service cells is p_URLLC×a1, and the remaining UE detection capability of PDCCH is The remaining UE detection capability of PDCCH is distributed to the serving cells configured for the UE. The detection capability of PDCCH allocated to each cell is The service cell for detecting PDCCH for URLLC service transmission is allocated with the detection capability of PDCCH a1+b1, and the service cell for detecting PDCCH for URLLC service transmission is allocated with the maximum detection capability of PDCCH b1. By adopting this method, by setting the appropriate factor a1, the PDCCH detection capability can be preferentially allocated to the PDCCH detection for high-priority service scheduling, so as to ensure the transmission of high-priority services.

[0131] The formula used in the exemplary embodiments of the present disclosure is only for illustrative purposes and is not intended to limit the scope of protection of the present disclosure. Those skilled in the art may obtain corresponding results according to information such as cell configuration. For example, the formula may be changed to obtain the calculation result of the formula. For example, a formula different from the above formula may be used to calculate according to the cell configuration. wait.

[0132] According to an exemplary embodiment of the present disclosure, a device for receiving DCI is provided, such as Figure 2As shown, the device 200 may include: a detection number determination unit 210, which determines the detection number corresponding to the DCI detection capability of the UE and the detection number corresponding to the DCI format; a detection number adjustment unit 220, which reduces the detection number corresponding to the DCI format, wherein the reduced detection number corresponding to the DCI format is less than or equal to the detection number corresponding to the DCI detection capability; and a DCI receiving unit 230, which receives DCI according to the reduced detection number corresponding to the DCI format.

[0133] The detection times adjustment unit 220 may include a bit number changing unit and / or a detection times limiting unit. The bit number changing unit reduces the number of DCI formats with different bit numbers detected by changing the bit number of at least one DCI format to eliminate the detection times corresponding to the DCI format removed by changing the bit number, and the detection times limiting unit limits the detection times of the physical downlink control channel PDCCH and the detection times of the non-overlapping control channel elements CCE.

[0134] As an example, for a service cell introducing URLLC service transmission, the bit number changing unit reduces the number of detected DCI formats with different bit numbers by at least one of the following operations: making the number of bits of DCI format 0-0 of CSS and the number of bits of DCI format 1-0 of CSS the same by increasing or decreasing the number of bits of the DCI format; making the number of bits of DCI format 0-0 of USS and the number of bits of DCI format 1-0 of CSS the same by increasing or decreasing the number of bits of the DCI format; if the number of bits of DCI format 0-1 of USS is greater than the number of bits of DCI format 0-0 of USS or DCI format 1-0 of USS, If the number of bits of DCI format 0-1 of USS is the same as the number of bits of DCI format 0-0 of USS or the number of bits of DCI format 1-0 of USS, 1 bit is added to the number of bits of DCI format 0-1 of USS so that the number of bits of DCI format 0-1 of USS is different from the number of bits of DCI format 0-0 of USS or the number of bits of DCI format 1-0 of USS; if the number of bits of DCI format 1-1 of USS is the same as the number of bits of DCI format 0-0 of USS or the number of bits of DCI format 1-0 of USS, 1 bit is added to the number of bits of DCI format 1-1 of USS so that the number of bits of DCI format 1-1 of USS is different from the number of bits of DCI format 0-0 of USS or the number of bits of DCI format 1-0 of USS,

[0135] Among them, if the above operations make the number of DCI formats with different numbers of bits detected by the UE in each service cell less than or equal to M, and the number of DCI formats with different numbers of bits scrambled by C-RNTI detected by the UE in each service cell is less than or equal to N, then the step of reducing the number of DCI formats with different numbers of bits detected is completed, wherein N≥4 and M≥3.

[0136] As an example, for a service cell introducing URLLC service transmission, if the bit number changing unit does not make the number of DCI formats with different numbers of bits detected by the UE in each service cell less than or equal to M through the at least one operation, and the number of DCI formats with different numbers of bits scrambled with C-RNTI detected by the UE in each service cell is less than or equal to N, then the following steps are performed in the order of step b, step c, step d, step e, step f and step a until the number of DCI formats with different numbers of bits detected by the UE in each service cell is less than or equal to M, and the number of DCI formats with different numbers of bits scrambled with C-RNTI detected by the UE in each service cell is less than or equal to N, wherein N≥4, M≥3: step a, by increasing or decreasing the number of bits of DCI format 0-x of USS or the number of bits of DCI format 1-x of USS, so that the number of bits of DCI format 0-x of USS is the same as the number of bits of DCI format 1-x of USS; step b, by increasing or decreasing the number of bits of DCI format 0-1 of USS, so that the number of bits of DCI format 0-1 of USS is the same as the number of bits of DCI format 0-x of USS or the number of bits of DCI format 1-x of USS; step c, by increasing or decreasing the number of bits of DCI format 1-1 of USS, so that the number of bits of DCI format 1-1 of USS is the same as the number of bits of DCI format 0-1 of USS. -x or the number of bits of DCI format 1-x of USS is the same; step d, if the difference between the number of bits of DCI format 0-1 of USS and the number of bits of DCI format 0-x of USS or the number of bits of DCI format 1-x of USS is less than or equal to the threshold value, then by increasing or decreasing the number of bits of DCI format 0-1 of USS, the number of bits of DCI format 0-1 of USS is made the same as the number of bits of DCI format 0-x of USS or the number of bits of DCI format 1-x of USS; if the difference between the number of bits of DCI format 0-1 of USS and the number of bits of DCI format 0-x of USS or the number of bits of DCI format 1-x of USS is greater than the threshold value L, then the UE stops detecting Detect DCI format 0-1 of USS; step e, if the difference between the number of bits of DCI format 1-1 of USS and the number of bits of DCI format 0-x of USS or the number of bits of DCI format 1-x of USS is less than or equal to the threshold value, then increase or decrease the number of bits of DCI format 1-1 of USS so that the number of bits of DCI format 1-1 of USS is the same as the number of bits of DCI format 0-x of USS or the number of bits of DCI format 1-x of USS; if the difference between the number of bits of DCI format 1-1 of USS and the number of bits of DCI format 0-x of USS or the number of bits of DCI format 1-x of USS is greater than the threshold value, the UE stops detecting DCI format 1-1 of USS;Step f, by increasing or decreasing the number of bits of the DCI format 0-1 of the USS or the number of bits of the DCI format 1-1 of the USS, so that the number of bits of the DCI format 0-1 of the USS is the same as the number of bits of the DCI format 1-1 of the USS. ;

[0137] Optionally, the bit number changing unit may determine the priority of the DCI format and reduce the number of bits of the DCI format according to the determined priority.

[0138] Optionally, the number of bits of a DCI format with a low priority is changed before the number of bits of a DCI format with a high priority, and when the number of DCI formats detected after changing the number of bits of the DCI format reaches a predetermined number, the changing of the number of bits of the DCI format is stopped, and / or, the priority of the DCI format is determined according to the service type of PDSCH and PUSCH scheduled by the DCI with the DCI format, and / or, the priority of the DCI format to which the DCI scheduling PDSCH or PUSCH for URLLC data transmission belongs is higher than the priority of the DCI format to which the DCI scheduling PDSCH or PUSCH for eMBB data transmission belongs.

[0139] Optionally, the device further includes: a blind detection number adjustment unit to reduce the blind detection number of each DCI format.

[0140] Optionally, the blind detection number adjustment unit is used to: reduce the number of blind detections of the DCI format based on priority, wherein the priority for reducing the number of blind detections of the DCI format is determined based on the service type of PDSCH and / or PUSCH, and / or, the number of blind detections of a low priority DCI format is reduced before the number of blind detections of a high priority DCI format, and when the complexity of DCI blind detection reaches a predetermined level after reducing the number of blind detections of the DCI format, stop reducing the number of blind detections of the DCI format, and / or, the priority of the DCI format to which the DCI for scheduling PUSCH or PDSCH for URLLC data transmission belongs is higher than the priority of the DCI format to which the DCI for scheduling PUSCH or PDSCH for eMBB data transmission belongs.

[0141] Optionally, the detection time limiting unit is used to: when the UE is configured with a service cell, or when the UE is configured with CA or DC, and the maximum number of service cells supported by the CA capability or DC capability of the UE is a predetermined number, and the predetermined number is greater than or equal to the number of service cells configured by the UE, determine a first correspondence between the subcarrier space configuration of the PDCCH and the maximum number of detections of the PDCCH in each time slot under each service cell configured by the UE, and a second correspondence between the subcarrier space configuration of the PDCCH and the maximum number of detections of non-overlapping CCEs in each time slot under each service cell configured by the UE, and limit the number of detections of the PDCCH and the number of detections of non-overlapping CCEs according to the determined result.

[0142] Optionally, the detection number limiting unit is used to: when the UE is configured with CA or DC, the maximum number of service cells supported by the CA capability or DC capability of the UE is a predetermined number, and the predetermined number is less than or equal to the number of downlink service cells indicated by the UE's detection capability for PDCCH And the UE is configured When there are downlink service cells, the number of downlink service cells indicated by the first corresponding relationship, the second corresponding relationship, and the detection capability And the number of downlink serving cells configured by the UE Determine if the UE is The sum of the maximum number of detections of PDCCHs of different sizes in each time slot in the downlink serving cell and the maximum number of detections of PDCCHs of different sizes in the downlink serving cell The maximum sum of the detection times of non-overlapping CCEs in each time slot of the downlink serving cells is determined, and the detection times of PDCCH and the detection times of non-overlapping CCEs are limited according to the determined result.

[0143] Optionally, the detection number limiting unit is used to: determine the third correspondence and the fourth correspondence according to the following method and limit the number of PDCCH detections and the number of non-overlapping CCE detections according to the determined correspondence: when the UE is configured with a service cell supporting URLLC services, determine the third correspondence between the maximum number of detections of PDCCHs of different sizes and the subcarrier space configuration of the PDCCH in each time slot under the service cell supporting the URLLC service, and determine the fourth correspondence between the maximum number of detections of non-overlapping CCEs and the subcarrier space configuration of the PDCCH in each time slot under the service cell supporting the URLLC service.

[0144] Optionally, the detection time limiting unit is used for: when at least one of the following conditions is met, for a service cell that does not support RULLC service, determining the maximum number of detections for PDCCHs of different sizes and the maximum number of detections for non-overlapping CCEs in each time slot in the service cell that does not support RULLC service according to the first correspondence and the second correspondence, and determining the maximum number of detections for PDCCHs of different sizes and the maximum number of detections for non-overlapping CCEs in each time slot in the service cell that supports RULLC service according to the third correspondence and the fourth correspondence: Condition 1: The UE is configured with CA or DC, the UE supports URLLC service, the CA capability or DC capability of the UE supports a maximum of a predetermined number of downlink service cells, and the number of service cells configured by the UE to support URLLC service is less than or equal to the predetermined number; Condition 2: The UE is configured with CA or DC, the UE supports URLLC service, the CA capability or DC capability of the UE supports a maximum of a predetermined number of downlink service cells, and the downlink service cells configured by the UE to support URLLC service The number of cells is less than the number s1, and the number s1 is less than or equal to the predetermined number; Condition 3: The UE is configured with CA or DC, the UE supports URLLC services, the CA capability or DC capability of the UE supports a maximum of a predetermined number of downlink service cells, the number of downlink service cells configured by the UE to support URLLC services is less than the number s1, and the number of downlink service cells configured by the UE that do not support URLLC services is less than the number or equal to the number s2, the number s1 is less than or equal to the predetermined number, and the number s2 is less than or equal to the predetermined number; Condition 4: The UE is configured with CA or DC, the UE supports URLLC services, the CA capability or DC capability of the UE supports a maximum of a predetermined number of downlink service cells, the number of downlink service cells configured by the UE to support URLLC services is h1, the number of downlink service cells configured by the UE that do not support URLLC services is h2, and h1×(1+alpha)+h2 is less than or equal to the predetermined number, or h1×alpha_1+h2 is less than or equal to the predetermined number, where alpha and alpha_1 are preset factors respectively.

[0145] Optionally, when CA or DC is configured on the UE, the UE supports URLLC services, the number of downlink serving cells supported by the CA capability or DC capability of the UE is greater than a predetermined number, and the PDCCH detection capability of the UE includes Downlink service cells, is greater than or equal to the predetermined number, and the UE is configured In the case of a downlink service cell, the detection number limiting unit 220 is used to: determine the maximum detection number by at least one of the following methods, and limit the corresponding detection number according to the determination result: Method 1: According to the first corresponding relationship and the second corresponding relationship, determine the maximum detection number of PDCCHs of different sizes in each time slot of each downlink service cell, and the maximum detection number of non-overlapping CCEs in each time slot of each downlink service cell; Method 2: According to the third corresponding relationship and the fourth corresponding relationship, determine the maximum detection number of PDCCHs of different sizes in each time slot of each downlink service cell, and the maximum detection number of non-overlapping CCEs in each time slot of each downlink service cell; Method 3: According to the first corresponding relationship and the second corresponding relationship, determine the maximum detection number of PDCCHs of different sizes in each time slot of each downlink service cell supporting URLLC service, and the maximum detection number of non-overlapping CCEs in each time slot of each downlink service cell supporting URLLC service, and according to the third corresponding relationship and the fourth corresponding relationship, determine the maximum detection number of PDCCHs of different sizes in each time slot of each downlink service cell that does not support URLLC service, and the maximum detection number of non-overlapping CCEs in each time slot of each downlink service cell that does not support URLLC service. Method 4: According to the first correspondence and the third correspondence, determine the maximum number of detections of PDCCHs of different sizes in each time slot of each downlink service cell that does not introduce URLLC services and the downlink service cell that introduces URLLC services, and according to the second correspondence and the fourth correspondence, determine the maximum number of detections of non-overlapping CCEs in each time slot of each downlink service cell that does not introduce URLLC services and the downlink service cell that introduces URLLC services; Method 5: Prioritize the downlink service cell that supports URLLC services among the PDCCH detection capabilities of the UE based on a predetermined weighting factor α A portion of the capabilities corresponding to the number of cells weighted by the weighting factor α is allocated to the downlink service cell supporting the URLLC service, and the capabilities of the UE's PDCCH detection capabilities except for the said portion are allocated to the remaining downlink service cells; Method six: Prioritize based on a predetermined weighting factor a1 to allocate a portion of the UE's PDCCH detection capabilities corresponding to the number of downlink service cells supporting the URLLC service weighted by the weighting factor a1 to the downlink service cell supporting the URLLC service, and allocate the capabilities of the UE's PDCCH detection capabilities except for the said portion on average to each downlink service cell.

[0146] According to another exemplary embodiment of the present disclosure, a computer-readable storage medium storing a computer program is provided, wherein when the computer program is executed by a processor, the method as described above is implemented.

[0147] According to another exemplary embodiment of the present disclosure, an electronic device is provided, wherein the electronic device comprises: a processor; and a memory storing a computer program, and when the computer program is executed by the processor, the method as described above is implemented.

[0148] Computer readable storage media is any data storage device that can store data read by a computer system. Examples of computer readable recording media include read-only memory, random access memory, read-only optical disks, magnetic tapes, floppy disks, optical data storage devices, and carrier waves (such as data transmission over the Internet via a wired or wireless transmission path).

[0149] In addition, it should be understood that the various units of the device (e.g., terminal, base station, etc.) according to the exemplary embodiments of the present disclosure may be implemented as hardware components and / or software components. Those skilled in the art may implement the various units, for example, using a field programmable gate array (FPGA) or an application specific integrated circuit (ASIC), according to the processing performed by the defined various units.

[0150] In addition, the method according to the exemplary embodiment of the present disclosure can be implemented as a computer code in a computer-readable storage medium. Those skilled in the art can implement the computer code according to the description of the above method. When the computer code is executed in a computer, the above method of the present disclosure is implemented.

[0151] Although some exemplary embodiments of the present disclosure have been shown and described, it will be appreciated by those skilled in the art that modifications may be made to these embodiments without departing from the principles and spirit of the present disclosure, the scope of which is defined by the claims and their equivalents.

Claims

1. A method performed by a user equipment UE in a wireless communication system, the method include: Sending capability information associated with carrier aggregation to a base station, wherein the capability information includes first information, wherein the first information indicates a first maximum number of component carriers CC associated with physical downlink control channel PDCCH monitoring; receiving configuration information associated with a downlink control information (DCI) format from the base station; Performing a first step of DCI size alignment, wherein the first step comprises: aligning the size of DCI format 0-x for uplink scheduling with the size of DCI format 1-x for downlink scheduling when the total number of different DCI sizes configured to be monitored is greater than 4 or the total number of different DCI sizes with cell radio network temporary identification value C-RNTI configured to be monitored is greater than 3; and performing a second step of DCI size alignment, wherein the second step comprises: after the first step, when the total number of different DCI sizes configured to be monitored is greater than 4, or the total number of different DCI sizes with the C-RNTI configured to be monitored is greater than 3, aligning the size of DCI format 0-1 for uplink scheduling with the size of DCI format 1-1 for downlink scheduling, The DCI format 0-x is different from the DCI format 0-1, and the DCI format 1-x is different from the DCI format 1-1.

2. The method according to claim 1, in, The DCI formats 0-x are used for uplink scheduling associated with ultra-reliable low-latency communications URLLC, and The DCI format 1-x is used for downlink scheduling associated with the URLLC.

3. The method according to claim 1, in, The configuration information is received through high-layer signaling.

4. The method according to claim 1, in, After applying the first and second steps, the total number of different DCI sizes configured to be monitored is less than or equal to 4, and After applying the first step and the second step, the total number of different DCI sizes with the C-RNTI configured to be monitored is less than or equal to 3.

5. The method according to claim 1, in, The capability information further includes second information, wherein the second information indicates a second maximum number of PDCCH monitoring for the first downlink cell and a third maximum number of PDCCH monitoring for the second downlink cell, and Among them, the first downlink cell used for the UE supports ultra-reliable low-latency communication URLLC, and the second downlink cell used for the UE does not support the URLLC.

6. A method performed by a base station in a wireless communication system, the method include: receiving capability information associated with carrier aggregation from a user equipment UE, wherein the capability information includes first information, wherein the first information indicates a first maximum number of component carriers CC associated with physical downlink control channel PDCCH monitoring, Sending configuration information associated with a downlink control information DCI format to the UE, Sending DCI based on DCI size alignment to the UE, The first step of DCI size alignment is performed by the following operations: when the total number of different DCI sizes configured to be monitored is greater than 4, or the total number of different DCI sizes with a cell radio network temporary identification value C-RNTI configured to be monitored is greater than 3, aligning the size of DCI format 0-x for uplink scheduling with the size of DCI format 1-x for downlink scheduling; and The second step of DCI size alignment is performed by the following operations: after the first step, when the total number of different DCI sizes configured to be monitored is greater than 4, or the total number of different DCI sizes with the C-RNTI configured to be monitored is greater than 3, aligning the size of DCI format 0-1 for uplink scheduling and the size of DCI format 1-1 for downlink scheduling, and The DCI format 0-x is different from the DCI format 0-1, and the DCI format 1-x is different from the DCI format 1-1.

7. The method according to claim 6, in, The DCI formats 0-x are used for uplink scheduling associated with ultra-reliable low-latency communications URLLC, and The DCI format 1-x is used for downlink scheduling associated with the URLLC.

8. The method according to claim 6, in, The configuration information is sent through high-layer signaling.

9. The method according to claim 6, in, After applying the first and second steps, the total number of different DCI sizes configured to be monitored is less than or equal to 4, and After applying the first step and the second step, the total number of different DCI sizes with the C-RNTI configured to be monitored is less than or equal to 3.

10. The method according to claim 6, in, The capability information further includes second information, wherein the second information indicates a second maximum number of PDCCH monitoring for the first downlink cell and a third maximum number of PDCCH monitoring for the second downlink cell, and Among them, the first downlink cell used for the UE supports ultra-reliable low-latency communication URLLC, and the second downlink cell used for the UE does not support the URLLC.

11. A user equipment UE in a wireless communication system, include: Transceiver; as well as A processor is coupled to the transceiver and is configured to: Sending capability information associated with carrier aggregation to a base station, wherein the capability information includes first information, wherein the first information indicates a first maximum number of component carriers CC associated with physical downlink control channel PDCCH monitoring; receiving configuration information associated with a downlink control information (DCI) format from the base station; Performing a first step of DCI size alignment, wherein the first step comprises: aligning the size of DCI format 0-x for uplink scheduling with the size of DCI format 1-x for downlink scheduling when the total number of different DCI sizes configured to be monitored is greater than 4 or the total number of different DCI sizes with cell radio network temporary identification value C-RNTI configured to be monitored is greater than 3; and performing a second step of DCI size alignment, wherein the second step comprises: after the first step, when the total number of different DCI sizes configured to be monitored is greater than 4, or the total number of different DCI sizes with the C-RNTI configured to be monitored is greater than 3, aligning the size of DCI format 0-1 for uplink scheduling with the size of DCI format 1-1 for downlink scheduling, The DCI format 0-x is different from the DCI format 0-1, and the DCI format 1-x is different from the DCI format 1-1.

12. The UE according to claim 11, in, The DCI formats 0-x are used for uplink scheduling associated with ultra-reliable low-latency communications URLLC, and The DCI format 1-x is used for downlink scheduling associated with the URLLC.

13. The UE according to claim 11, in, The configuration information is received through high-layer signaling.

14. The UE according to claim 11, in, After applying the first and second steps, the total number of different DCI sizes configured to be monitored is less than or equal to 4, and After applying the first step and the second step, the total number of different DCI sizes with the C-RNTI configured to be monitored is less than or equal to 3.

15. The UE according to claim 11, in, The capability information further includes second information, wherein the second information indicates a second maximum number of PDCCH monitoring for the first downlink cell and a third maximum number of PDCCH monitoring for the second downlink cell, and Among them, the first downlink cell used for the UE supports ultra-reliable low-latency communication URLLC, and the second downlink cell used for the UE does not support the URLLC.

16. A base station in a wireless communication system, include: Transceiver; as well as A controller is coupled to the transceiver and is configured to: receiving capability information associated with carrier aggregation from a user equipment UE, wherein the capability information includes first information, wherein the first information indicates a first maximum number of component carriers CC associated with physical downlink control channel PDCCH monitoring, Sending configuration information associated with a downlink control information DCI format to the UE, and Sending DCI based on DCI size alignment to the UE, The first step of DCI size alignment is performed by the following operations: when the total number of different DCI sizes configured to be monitored is greater than 4, or the total number of different DCI sizes with a cell radio network temporary identification value C-RNTI configured to be monitored is greater than 3, aligning the size of DCI format 0-x for uplink scheduling with the size of DCI format 1-x for downlink scheduling; and The second step of DCI size alignment is performed by the following operations: after the first step, when the total number of different DCI sizes configured to be monitored is greater than 4, or the total number of different DCI sizes with the C-RNTI configured to be monitored is greater than 3, aligning the size of DCI format 0-1 for uplink scheduling and the size of DCI format 1-1 for downlink scheduling, and The DCI format 0-x is different from the DCI format 0-1, and the DCI format 1-x is different from the DCI format 1-1.

17. The base station according to claim 16, in, The DCI formats 0-x are used for uplink scheduling associated with ultra-reliable low-latency communications URLLC, and The DCI format 1-x is used for downlink scheduling associated with the URLLC.

18. The base station according to claim 16, in, The configuration information is sent through high-layer signaling.

19. The base station according to claim 16, in, After applying the first and second steps, the total number of different DCI sizes configured to be monitored is less than or equal to 4, and After applying the first step and the second step, the total number of different DCI sizes with the C-RNTI configured to be monitored is less than or equal to 3.

20. The base station according to claim 16, in, The capability information further includes second information, wherein the second information indicates a second maximum number of PDCCH monitoring for the first downlink cell and a third maximum number of PDCCH monitoring for the second downlink cell, and Among them, the first downlink cell used for the UE supports ultra-reliable low-latency communication URLLC, and the second downlink cell used for the UE does not support the URLLC.

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