Uplink transmission method, device, and storage medium
Example uplink transmission methods and apparatus are described. One example method includes determining a spatial relation for uplink transmission of a first cell by a terminal device by using a first resource in a second cell. The terminal device performs uplink transmission in the first cell based on the spatial relation for uplink transmission of the first cell.
1. A method for determining a spatial relation for uplink transmission, comprising:
determining a spatial relation for uplink transmission of a first cell by using a first resource in a second cell, wherein the determining a spatial relation for uplink transmission of a first cell by using a first resource in a second cell comprises one of the following:
when the spatial relation for uplink transmission is not configured in the first cell, determining the spatial relation for uplink transmission of the first cell by using the first resource in the second cell;
when the spatial relation for uplink transmission is not configured in the first cell, no CORESET is configured in the first cell, and no TCI-state that is used for transmission of a PDSCH is activated in a downlink bandwidth part currently activated in the first cell, determining the spatial relation for uplink transmission of the first cell by using the first resource in the second cell; or
when the spatial relation for uplink transmission and a reference signal resource for road loss measurement are not configured in the first cell, no control-resource set is configured in the first cell, and no TCI-state that is used for transmission of the PDSCH is activated in the first cell, determining the spatial relation for uplink transmission of the first cell by using the first resource in the second cell; and
performing uplink transmission in the first cell based on the spatial relation for uplink transmission of the first cell.
2. The method according to claim 1 , wherein the second cell comprises one of the following:
a primary cell corresponding to the first cell;
a scheduling cell of the first cell; or
a cell in cells that meet a first condition.
3. The method according to claim 1 , wherein the second cell comprises one of the following:
a primary cell corresponding to the first cell, wherein a frequency of the primary cell corresponding to the first cell belongs to a frequency range 2;
a scheduling cell of the first cell, wherein a frequency of the scheduling cell of the first cell belongs to the frequency range 2; or
a cell in cells that meet a first condition, wherein at least one of the frequency of the primary cell corresponding to the first cell or the frequency of the scheduling cell of the first cell belongs to the frequency range 1.
4. The method according to claim 2 , wherein the cells that meet the first condition comprise one of the following:
a cell in a cell group to which the first cell belongs;
in the cell group to which the first cell belongs, a cell that is configured with a control-resource set;
in the cell group to which the first cell belongs, a cell that uses a frequency range 2;
in the cell group to which the first cell belongs, a cell that is configured with the control-resource set and uses the frequency range 2;
a cell in a frequency band to which the first cell belongs;
in the frequency band to which the first cell belongs, a cell that is configured with a control-resource set;
in the frequency band to which the first cell belongs, a cell that uses the frequency range 2;
in the frequency band to which the first cell belongs, a cell that is configured with the control-resource set and uses the frequency range 2;
a cell in a frequency band list to which the first cell belongs;
in the frequency band list to which the first cell belongs, a cell that is configured with a control-resource set;
in the frequency band list to which the first cell belongs, a cell that uses the frequency range 2; or
in the frequency band list to which the first cell belongs, a cell that is configured with the control-resource set and uses the frequency range 2.
5. The method according to claim 2 , wherein the second cell comprises one of the following:
in the cells that meet the first condition, a cell with a minimum or maximum index; or
in the cells that meet the first condition, a cell whose frequency is the closest to a frequency of the first cell, wherein:
if in the cells that meet the first condition, there are a plurality of cells whose frequencies are the closest to the frequency of the first cell, the second cell comprises the cell with the minimum or maximum index in the cells that meet the first condition and whose frequencies are the closest to the frequency of the first cell.
6. The method according to claim 1 , wherein the first resource in the second cell comprises one of the following:
in a bandwidth part currently activated in the second cell, a reference signal resource that is used to indicate quasi-co-location information of a physical downlink control channel and that is in a control-resource set with a minimum index in one or more control-resource sets that are obtained through monitoring last time;
in the bandwidth part currently activated in the second cell, a reference signal resource in a transmission configuration indication state (TCI-state) with a minimum index in TCI-states that are used for transmission of a physical downlink shared channel (PDSCH);
when an initial access process is performed in the second cell, a resource in a used synchronization signal and broadcast channel measurement resource block (SSB);
a resource in a spatial relation for uplink transmission of the second cell; or
a reference signal resource for road loss measurement of the second cell.
7. The method according to claim 1 , wherein the uplink transmission comprises one of the following:
uplink transmission of a physical uplink control channel (PUCCH);
uplink transmission of a physical uplink shared channel (PUSCH); or
uplink transmission of a sounding reference signal (SRS).
8. The method according to claim 1 , wherein a spatial domain reception filter of the first resource comprises a spatial domain transmission filter for the uplink transmission.
9. An electronic device, comprising:
at least one processor; and
one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to:
determine a spatial relation for uplink transmission of a first cell by using a first resource in a second cell, wherein the second cell is selected based on that a frequency of the second cell meets a predetermined condition, wherein determining the spatial relation for uplink transmission of the first cell by using the first resource in the second cell comprises one of the following:
when the spatial relation for uplink transmission is not configured in the first cell, determining the spatial relation for uplink transmission of the first cell by using the first resource in the second cell;
when the spatial relation for uplink transmission is not configured in the first cell, no CORESET is configured in the first cell, and no TCI-state that is used for transmission of a PDSCH is activated in a downlink bandwidth part currently activated in the first cell, determining the spatial relation for uplink transmission of the first cell by using the first resource in the second cell; or
when the spatial relation for uplink transmission and a reference signal resource for road loss measurement are not configured in the first cell, no control-resource set is configured in the first cell, and no TCI-state that is used for transmission of the PDSCH is activated in the first cell, determining the spatial relation for uplink transmission of the first cell by using the first resource in the second cell; and
perform uplink transmission in the first cell based on the spatial relation for uplink transmission of the first cell.
10. The electronic device according to claim 9 , wherein the second cell comprises one of the following:
a primary cell corresponding to the first cell;
a scheduling cell of the first cell; or
a cell in cells that meet a first condition.
11. The electronic device according to claim 9 , wherein the second cell comprises one of the following:
a primary cell corresponding to the first cell, wherein a frequency of the primary cell corresponding to the first cell belongs to a frequency range 2;
a scheduling cell of the first cell, wherein a frequency of the scheduling cell of the first cell belongs to the frequency range 2; or
a cell in cells that meet a first condition, wherein at least one of the frequency of the primary cell corresponding to the first cell or the frequency of the scheduling cell of the first cell belongs to the frequency range 1.
12. The electronic device according to claim 10 , wherein the cells that meet the first condition comprise one of the following:
a cell in a cell group to which the first cell belongs;
in the cell group to which the first cell belongs, a cell that is configured with a control-resource set;
in the cell group to which the first cell belongs, a cell that uses a frequency range 2;
in the cell group to which the first cell belongs, a cell that is configured with the control-resource set and uses the frequency range 2;
a cell in a frequency band to which the first cell belongs;
in the frequency band to which the first cell belongs, a cell that is configured with a control-resource set;
in the frequency band to which the first cell belongs, a cell that uses the frequency range 2;
in the frequency band to which the first cell belongs, a cell that is configured with the control-resource set and uses the frequency range 2;
a cell in a frequency band list to which the first cell belongs;
in the frequency band list to which the first cell belongs, a cell that is configured with a control-resource set;
in the frequency band list to which the first cell belongs, a cell that uses the frequency range 2; or
in the frequency band list to which the first cell belongs, a cell that is configured with the control-resource set and uses the frequency range 2.
13. The electronic device according to claim 10 , wherein the second cell comprises one of the following:
in the cells that meet the first condition, a cell with a minimum or maximum index; or
in the cells that meet the first condition, a cell whose frequency is the closest to a frequency of the first cell, wherein:
if in the cells that meet the first condition, there are a plurality of cells whose frequencies are the closest to the frequency of the first cell, the second cell comprises the cell with the minimum or maximum index in the cells that meet the first condition and whose frequencies are the closest to the frequency of the first cell.
14. The electronic device according to claim 9 , wherein the first resource in the second cell comprises one of the following:
in a bandwidth part currently activated in the second cell, a reference signal resource that is used to indicate quasi-co-location information of a physical downlink control channel and that is in a control-resource set with a minimum index in one or more control-resource sets that are obtained through monitoring last time;
in the bandwidth part currently activated in the second cell, a reference signal resource in a transmission configuration indication state (TCI-state) with a minimum index in TCI-states that are used for transmission of a physical downlink shared channel (PDSCH);
when an initial access process is performed in the second cell, a resource in a used synchronization signal and broadcast channel measurement resource block (SSB);
a resource in a spatial relation for uplink transmission of the second cell; or
a reference signal resource for road loss measurement of the second cell.
15. The electronic device according to claim 9 , wherein the uplink transmission comprises one of the following:
uplink transmission of a physical uplink control channel (PUCCH);
uplink transmission of a physical uplink shared channel (PUSCH); or
uplink transmission of a sounding reference signal (SRS).
16. The electronic device according to claim 9 , wherein a spatial domain reception filter of the first resource comprises a spatial domain transmission filter for the uplink transmission.
17. A non-transitory computer-readable storage medium, the non-transitory computer-readable storage medium storing programming instructions for execution by at least one processor to:
determine a spatial relation for uplink transmission of a first cell by using a first resource in a second cell, wherein the second cell is selected based on that a frequency of the second cell meets a predetermined condition, wherein determining the spatial relation for uplink transmission of the first cell by using the first resource in the second cell comprises one of the following:
when the spatial relation for uplink transmission is not configured in the first cell, determining the spatial relation for uplink transmission of the first cell by using the first resource in the second cell;
when the spatial relation for uplink transmission is not configured in the first cell, no CORESET is configured in the first cell, and no TCI-state that is used for transmission of a PDSCH is activated in a downlink bandwidth part currently activated in the first cell, determining the spatial relation for uplink transmission of the first cell by using the first resource in the second cell; or
when the spatial relation for uplink transmission and a reference signal resource for road loss measurement are not configured in the first cell, no control-resource set is configured in the first cell, and no TCI-state that is used for transmission of the PDSCH is activated in the first cell, determining the spatial relation for uplink transmission of the first cell by using the first resource in the second cell; and
perform uplink transmission in the first cell based on the spatial relation for uplink transmission of the first cell.
18. The non-transitory computer-readable storage medium according to claim 17 , wherein the second cell comprises one of the following:
a primary cell corresponding to the first cell;
a scheduling cell of the first cell; or
a cell in cells that meet a first condition.
19. The non-transitory computer-readable storage medium according to claim 18 , wherein the second cell comprises one of the following:
a primary cell corresponding to the first cell, wherein a frequency of the primary cell corresponding to the first cell belongs to a frequency range 2;
a scheduling cell of the first cell, wherein a frequency of the scheduling cell of the first cell belongs to the frequency range 2; or
a cell in cells that meet a first condition, wherein at least one of the frequency of the primary cell corresponding to the first cell or the frequency of the scheduling cell of the first cell belongs to the frequency range 1.