CN-116261905-B - Method and device for aligning and determining downlink control information size

Abstract

The disclosure relates to the technical field of communication, in particular to a downlink control information size alignment and determination method and device, wherein the downlink control information size alignment method comprises the steps of receiving first downlink control information used for scheduling a plurality of cells, and determining the size alignment of traditional downlink control information in each cell scheduled by the first downlink control information, wherein in at least one first cell corresponding to the first downlink control information, the total number of the sizes of the first downlink control information and the sizes of the aligned traditional downlink control information is smaller than or equal to a first threshold value. According to the method and the device for detecting the DCI in the first cell, the total number of DCI sizes in at least one first cell is guaranteed not to be too large, and further complexity of blind detection of the DCI by the terminal is avoided. And avoiding the problem that when the network device schedules a plurality of cells through one MC-DCI, the MC-DCI which needs to be transmitted on different cells has different sizes.

Inventors

• WANG LEI

Assignees

• 北京小米移动软件有限公司

Dates

Publication Date

20260505

Application Date

20230203

Claims (20)

1. 1. A method for determining downlink control information size alignment, the method being performed by a terminal, the method comprising: receiving first downlink control information for scheduling a plurality of cells; Determining a reference cell in at least one first cell corresponding to the first downlink control information; Determining that legacy downlink control information and the first downlink control information are involved in alignment in the reference cell, and determining that legacy downlink control information is involved in alignment in a second cell in the at least one first cell, wherein the second cell is a cell other than the reference cell in the first cell.
2. 2. The method of claim 1, wherein the first downlink control information comprises at least one of: first downlink control information for scheduling downlink transmission; and the first downlink control information is used for scheduling uplink transmission.
3. 3. The method of claim 2, wherein the at least one first cell comprises at least one of: the cell set corresponding to the first downlink control information for scheduling downlink transmission comprises cells; The cell set corresponding to the first downlink control information for scheduling uplink transmission comprises cells; the cell set corresponding to the first downlink control information for scheduling uplink transmission and the cells contained in the cell set corresponding to the first downlink control information for scheduling uplink transmission.
4. 4. A method according to any of claims 1 to 3, characterized in that the reference cell comprises at least one of: a cell with the smallest cell index in the at least one first cell; a cell with the largest cell index in the at least one first cell; A cell of the at least one first cell having a minimum number of sizes configured with legacy downlink control information; A cell for calculating blind detection resources in the at least one first cell; and the at least one first cell is configured with a cell of which the first downlink control information corresponds to a search space.
5. 5. The method of claim 4, wherein the blind-check resources comprise at least one of: Blind checking BD resources; control channel element CCE.
6. 6. A method according to any of claims 1 to 3, wherein legacy downlink control information in each cell of the first downlink control information schedule meets a preset condition, wherein the preset condition comprises: the number of the traditional downlink control information scrambled by the cell radio network temporary identifier C-RNTI is smaller than or equal to the first number; The number of legacy downlink control information scrambled by an RNTI other than the C-RNTI is less than or equal to the second number.
7. 7. The method of claim 6, wherein the first number is 3 or 4 and the second number is 1.
8. 8. A method for downlink control information size alignment, performed by a network device, the method comprising: Determining a reference cell in at least one first cell corresponding to first downlink control information for scheduling a plurality of cells, wherein the conventional downlink control information and the first downlink control information participate in alignment in the reference cell, and the conventional downlink control information participates in alignment in a second cell in the at least one first cell, the second cell being a cell other than the reference cell in the first cells; and sending the first downlink control information to a terminal.
9. 9. The method of claim 8, wherein the first downlink control information comprises at least one of: first downlink control information for scheduling downlink transmission; and the first downlink control information is used for scheduling uplink transmission.
10. 10. The method of claim 9, wherein the at least one first cell comprises at least one of: the cell set corresponding to the first downlink control information for scheduling downlink transmission comprises cells; The cell set corresponding to the first downlink control information for scheduling uplink transmission comprises cells; the cell set corresponding to the first downlink control information for scheduling uplink transmission and the cells contained in the cell set corresponding to the first downlink control information for scheduling uplink transmission.
11. 11. The method according to any of claims 8 to 10, wherein the reference cell comprises at least one of: a cell with the smallest cell index in the at least one first cell; a cell with the largest cell index in the at least one first cell; A cell of the at least one first cell having a minimum number of sizes configured with legacy downlink control information; A cell for calculating blind detection resources in the at least one first cell; and the at least one first cell is configured with a cell of which the first downlink control information corresponds to a search space.
12. 12. The method of claim 11, wherein the blind-check resources comprise at least one of: Blind checking BD resources; control channel element CCE.
13. 13. The method according to any of claims 8 to 10, wherein legacy downlink control information in each cell of the first downlink control information schedule meets a preset condition, wherein the preset condition comprises: the number of the traditional downlink control information scrambled by the cell radio network temporary identifier C-RNTI is smaller than or equal to the first number; The number of legacy downlink control information scrambled by an RNTI other than the C-RNTI is less than or equal to the second number.
14. 14. The method of claim 13, wherein the first number is 3 or 4 and the second number is 1.
15. 15. A downlink control information size alignment determining apparatus, the apparatus comprising: A receiving module configured to receive first downlink control information for scheduling a plurality of cells; The processing module is configured to determine a reference cell in at least one first cell corresponding to the first downlink control information, determine that the conventional downlink control information and the first downlink control information participate in alignment in the reference cell, and determine that the conventional downlink control information participates in alignment in a second cell in the at least one first cell, wherein the second cell is a cell other than the reference cell in the first cells.
16. 16. The apparatus of claim 15, wherein the first downlink control information comprises at least one of: first downlink control information for scheduling downlink transmission; and the first downlink control information is used for scheduling uplink transmission.
17. 17. The apparatus of claim 16, wherein the at least one first cell comprises at least one of: the cell set corresponding to the first downlink control information for scheduling downlink transmission comprises cells; The cell set corresponding to the first downlink control information for scheduling uplink transmission comprises cells; the cell set corresponding to the first downlink control information for scheduling uplink transmission and the cells contained in the cell set corresponding to the first downlink control information for scheduling uplink transmission.
18. 18. The apparatus according to any of claims 15 to 17, wherein the reference cell comprises at least one of: a cell with the smallest cell index in the at least one first cell; a cell with the largest cell index in the at least one first cell; A cell of the at least one first cell having a minimum number of sizes configured with legacy downlink control information; A cell for calculating blind detection resources in the at least one first cell; and the at least one first cell is configured with a cell of which the first downlink control information corresponds to a search space.
19. 19. The apparatus of claim 18, wherein the blind detection resources comprise at least one of: Blind checking BD resources; control channel element CCE.
20. 20. The apparatus according to any one of claims 15 to 17, wherein legacy downlink control information in each cell of the first downlink control information schedule satisfies a preset condition, wherein the preset condition comprises: the number of the traditional downlink control information scrambled by the cell radio network temporary identifier C-RNTI is smaller than or equal to the first number; The number of legacy downlink control information scrambled by an RNTI other than the C-RNTI is less than or equal to the second number.

Description

Method and device for aligning and determining downlink control information size Technical Field The present disclosure relates to the field of communication technologies, and in particular, to a downlink control information size alignment determination method, a downlink control information size alignment determination device, a downlink control information size alignment system, a communication device, and a computer readable storage medium. Background In the related art, scheduling one downlink control information (Downlink Control Information, DCI) in a cell allows scheduling data of only one cell, such as scheduling a Physical Uplink shared channel (Physical Uplink SHARED CHANNEL, PUSCH), a Physical downlink shared channel (Physical Downlink SHARED CHANNEL, PDSCH). With the gradual fragmentation of the frequency resource, the need for scheduling multiple cell data at the same time will gradually increase. Disclosure of Invention The embodiments of the present disclosure provide a downlink control information size alignment determination method, a downlink control information size alignment determination device, a downlink control information size alignment system, a communication device, and a computer-readable storage medium, so as to solve the technical problems in the related art. According to a first aspect of the embodiments of the present disclosure, a downlink control information size alignment determining method is provided and executed by a terminal, the method includes receiving first downlink control information for scheduling a plurality of cells, determining size alignment of legacy downlink control information in each cell scheduled by the first downlink control information, wherein in at least one first cell corresponding to the first downlink control information, a total number of sizes of the first downlink control information and the aligned legacy downlink control information is less than or equal to a first threshold. According to a second aspect of the embodiments of the present disclosure, a downlink control information size alignment determining method is provided, which is performed by a terminal, and includes receiving first downlink control information for scheduling a plurality of cells, determining a reference cell in at least one first cell corresponding to the first downlink control information, determining a size alignment of legacy downlink control information and the first downlink control information in the reference cell, and determining a legacy downlink control information alignment in a second cell in the at least one first cell, wherein the second cell is a cell other than the reference cell in the first cell. According to a third aspect of the embodiments of the present disclosure, a downlink control information size alignment method is provided and executed by a network device, where the method includes aligning sizes of legacy downlink control information in each cell used for scheduling first downlink control information of a plurality of cells, where in at least one first cell corresponding to the first downlink control information, a total number of sizes of the first downlink control information and the aligned legacy downlink control information is less than or equal to a first threshold, and sending the first downlink control information to a terminal. According to a fourth aspect of the embodiments of the present disclosure, a downlink control information size alignment method is provided, which is performed by a network device, and includes determining a reference cell in at least one first cell corresponding to first downlink control information for scheduling a plurality of cells, aligning a size of legacy downlink control information and first downlink control information in the reference cell, and aligning a size of legacy downlink control information in a second cell in the at least one first cell, wherein the second cell is a cell other than the reference cell in the first cells, and transmitting the first downlink control information to a terminal. According to a fifth aspect of the embodiments of the present disclosure, there is provided a downlink control information size alignment determining apparatus, including a receiving module configured to receive first downlink control information for scheduling a plurality of cells, and a processing module configured to determine size alignment of legacy downlink control information in each cell scheduled by the first downlink control information, wherein, in at least one first cell corresponding to the first downlink control information, a total number of sizes of the first downlink control information and the aligned legacy downlink control information is less than or equal to a first threshold. According to a sixth aspect of the embodiments of the present disclosure, there is provided a downlink control information size alignment determining apparatus, including a receiving module configured to rece