IP Library › Granted Patent US 11,671,925
Granted Patent B2
US 11,671,925 · App. 17/683,121 · Granted Jun 6, 2023

Power control parameters for multi-TRP PUSCH repetition

Inventors: Yitao Chen (San Diego, CA); Mostafa Khoshnevisan (San Diego, CA); Fang Yuan (Beijing, CN); Tao Luo (San Diego, CA)
Assignee: QUALCOMM Incorporated
H04W52/325H04L5/0048H04W52/242H04W72/1289
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Quick Facts
Patent No.
US 11,671,925
App. No.
17/683,121
Granted
Jun 6, 2023
Kind
B2
Abstract

Certain aspects of the present disclosure provide techniques for communicating using power control parameters for multiple transmitter receiver point (mTRP) physical uplink shared channel (PUSCH) repetition. A method that may be performed by a user equipment (UE) includes receiving a sounding reference signal (SRS) configuration indicating at least a first SRS resource set and at least a second SRS resource set, receiving downlink control information (DCI) scheduling a first set of one or more PUSCH repetitions to a first TRP and a second set of one or more PUSCH repetitions to a second TRP, and transmitting the first and second sets of PUSCH repetitions using at least one of a first set of default power control parameters or a second set of default power control parameters.

Claims (88)

1. A user equipment (UE) configured for wireless communication, comprising:

a memory comprising computer-executable instructions; and

one or more processors configured to execute the computer-executable instructions and cause the UE to:

receive a sounding reference signal (SRS) configuration indicating at least a first SRS resource set associated with a first SRS resource indicator (SRI) physical uplink shared channel (PUSCH) power control information element with an identifier (ID) equal to zero and at least a second SRS resource set associated with a second SRI PUSCH power control information element with an ID equal to zero;

receive downlink control information (DCI) scheduling a first set of one or more PUSCH repetitions to a first transmitter receiver point (TRP) and a second set of one or more PUSCH repetitions to a second TRP; and

transmit the first and second sets of PUSCH repetitions using at least one of a first set of default power control parameters determined based on a mapping to the first SRI PUSCH power control information element with the ID equal to zero or a second set of default power control parameters determined based on a mapping to the second SRI PUSCH power control information element with the ID equal to zero.

2. The UE of claim 1 , wherein the one or more processors are further configured to cause the UE to decide, based on a field in the DCI, whether to use:

the first set of default power control parameters;

the second set of default power control parameters; or

both the first and second sets of default power control parameters.

3. The UE of claim 2 , wherein the field in the DCI indicates a dynamic switch in an order of which TRPs are targeted by which PUSCH repetition.

4. The UE of claim 1 , wherein the first and second sets of default power control parameters comprise one or more of: a first parameter for controlling received power level, a second parameter for partial path loss compensation, a third parameter indicating a reference signal (RS) resource index for measuring path loss, and a closed loop index.

5. The UE of claim 1 , wherein:

at least one of the SRS resource sets is configured with a single SRS resource; and

the DCI lacks an SRI field.

6. The UE of claim 5 , wherein the one or more processors are further configured to cause the UE to receive a medium access control (MAC) control element (MAC-CE) indicating an update to a path loss reference signal associated with at least one of the first SRI PUSCH power control information element with the ID equal to zero or the second SRI PUSCH power control information element with the ID equal to zero.

7. The UE of claim 5 , wherein:

when a value of a first open loop power control (OLPC) parameter set indication field is set to a certain value, a first value for a first parameter for controlling received power level in the first set of default power control parameters is assumed; and

when a value of a second OLPC parameter set indication field is set to a certain value, a second value for a second parameter for controlling received power level in the second set of default power control parameters is assumed.

8. The UE of claim 1 , wherein at least one of:

the UE is not provided with an SRI PUSCH power control setting; or

the DCI lacks an SRI field.

9. The UE of claim 8 , wherein:

the first set of default power control parameters comprises a first parameter for controlling received power level and a first parameter for partial path loss compensation from a set of parameters mapped to a highest set ID; and

the second set of default power control parameters comprises a second parameter for controlling received power level and a second parameter for partial path loss compensation from the set of parameters mapped to a second highest set ID.

10. The UE of claim 8 , wherein, when the UE is enabled with a default beam for path loss for SRS and is not provided a PUSCH path loss reference RS:

the first set of default power control parameters comprises a parameter indicating a reference signal (RS) resource index for measuring path loss associated with a first RS resource index used for the first SRS resource set; and

the second set of default power control parameters comprises a parameter indicating an RS resource index for measuring path loss associated with a second RS resource index used for the second SRS resource set.

11. The UE of claim 8 , wherein, when the UE is not configured with two PUSCH power control adjustment states, both the first and second sets of default power control parameters include a closed loop index of zero.

12. The UE of claim 8 , wherein, when the UE is configured with two PUSCH power control adjustment states, the first set of default power control parameters include a closed loop index of zero and the second set of default power control parameters includes a closed loop index of one.

13. A user equipment (UE) configured for wireless communication, comprising: a memory comprising computer-executable instructions; and one or more processors configured to execute the computer-executable instructions and cause the UE to:

receive a sounding reference signal (SRS) configuration indicating at least a first SRS resource set and at least a second SRS resource set;

receive downlink control information (DCI) scheduling a first set of one or more physical uplink shared channel (PUSCH) repetitions to a first transmitter receiver point (TRP) and a second set of one or more PUSCH repetitions to a second TRP; and

transmit the first and second sets of PUSCH repetitions using at least one of a first set of default power control parameters or a second set of default power control parameters, wherein:

at least one of: the UE is not provided with an SRI PUSCH power control setting or the DCI lacks an SRS resource indicator (SRI) field;

the first set of default power control parameters comprises a first parameter for controlling received power level and a first parameter for partial path loss compensation from a set of parameters; and

the second set of default power control parameters comprises a second parameter for controlling received power level and a second parameter for partial path loss compensation from the set of parameters.

14. A user equipment (UE) configured for wireless communication, comprising: a memory comprising computer-executable instructions; and one or more processors configured to execute the computer-executable instructions and cause the UE to:

receive a sounding reference signal (SRS) configuration indicating at least a first SRS resource set and at least a second SRS resource set;

receive downlink control information (DCI) scheduling a first set of one or more physical uplink shared channel (PUSCH) repetitions to a first transmitter receiver point (TRP) and a second set of one or more PUSCH repetitions to a second TRP; and

transmit the first and second sets of PUSCH repetitions using at least one of a first set of default power control parameters or a second set of default power control parameters, wherein:

at least one of: the UE is not provided with an SRI PUSCH power control setting or the DCI lacks an SRS resource indicator (SRI) field;

the first set of default power control parameters comprises a parameter indicating a reference signal (RS) resource index for measuring path loss associated with a first RS resource index determined based on a PUSCH path loss reference RS ID value of zero; and

the second set of default power control parameters comprises a parameter indicating a RS resource index for measuring path loss associated with a second RS resource index determined based on a PUSCH path loss reference RS ID value of one.

15. A network entity configured for wireless communication, comprising:

a memory comprising computer-executable instructions; and

one or more processors configured to execute the computer-executable instructions and cause the network entity to:

transmit a sounding reference signal (SRS) configuration indicating at least a first SRS resource set associated with a first SRS resource indicator (SRI) physical uplink shared channel (PUSCH) power control information element with an identifier (ID) equal to zero and at least a second SRS resource set associated with a second SRI PUSCH power control information element with an ID equal to zero for a user equipment (UE);

transmit downlink control information (DCI) scheduling a first set of one or more PUSCH repetitions to a first transmitter receiver point (TRP) and a second set of one or more PUSCH repetitions to a second TRP; and

process at least one of the first set of PUSCH repetitions based on a first set of default power control parameters determined based on a mapping to the first SRI PUSCH power control information element with the ID equal to zero or the second set of PUSCH repetitions based on a second set of default power control parameters determined based on a mapping to the second SRI PUSCH power control information element with the ID equal to zero.

16. The network entity of claim 15 , wherein the one or more processors are further configured to cause the network entity to provide, in a field in the DCI, an indication of a dynamic switch in an order of which TRPs are targeted by which PUSCH repetition and an indication of whether to use:

the first set of default power control parameters;

the second set of default power control parameters; or

both the first and second sets of default power control parameters.

17. The network entity of claim 15 , wherein the first and second sets of default power control parameters comprise one or more of: a first parameter for controlling received power level, a second parameter for partial path loss compensation, a third parameter indicating a reference signal (RS) resource index for measuring path loss, and a closed loop index.

18. The network entity of claim 15 , wherein:

at least one of the SRS resource sets is configured with a single SRS resource; and

the DCI lacks an SRI field.

19. The network entity of claim 15 , wherein at least one of:

the UE is not provided with an SRI PUSCH power control setting; or

the DCI lacks an SRI field.

20. The network entity of claim 19 , wherein, when a default beam for path loss for SRS is configured and a PUSCH path loss reference RS is not provided for the UE:

the first set of default power control parameters comprises a parameter indicating a reference signal (RS) resource index for measuring path loss associated with a first RS resource index used for the first SRS resource set; and

the second set of default power control parameters comprises a parameter indicating an RS resource index for measuring path loss associated with a second RS resource index used for the second SRS resource set.

21. The network entity of claim 19 , wherein, when two PUSCH power control adjustment states are not configured for the UE, both the first and second sets of default power control parameters include a closed loop index of zero.

22. The network entity of claim 19 , wherein, when two PUSCH power control adjustment states are configured for the UE, the first set of default power control parameters include a closed loop index of zero and the second set of default power control parameters includes a closed loop index of one.

23. A network entity configured for wireless communication, comprising: a memory comprising computer-executable instructions; and one or more processors configured to execute the computer-executable instructions and cause the network entity to:

transmit a sounding reference signal (SRS) configuration indicating at least a first SRS resource set and at least a second SRS resource set for a user equipment (UE);

transmit downlink control information (DCI) scheduling a first set of one or more physical uplink shared channel (PUSCH) repetitions to a first transmitter receiver point (TRP) and a second set of one or more PUSCH repetitions to a second TRP; and

process at least one of the first set of PUSCH repetitions based on a first set of default power control parameters or the second set of PUSCH repetitions based on a second set of default power control parameters, wherein:

at least one of: the UE is not provided with an SRI PUSCH power control setting or the DCI lacks an SRS resource indicator (SRI) field;

the first set of default power control parameters comprises a first parameter for controlling received power level and a second parameter for partial path loss compensation from a set of parameters; and

the second set of default power control parameters comprises a second parameter for controlling received power level and a second parameter for partial path loss compensation from the set of parameters.

24. A network entity configured for wireless communication, comprising: a memory comprising computer-executable instructions; and one or more processors configured to execute the computer-executable instructions and cause the network entity to:

transmit a sounding reference signal (SRS) configuration indicating at least a first SRS resource set and at least a second SRS resource set for a user equipment (UE);

transmit downlink control information (DCI) scheduling a first set of one or more physical uplink shared channel (PUSCH) repetitions to a first transmitter receiver point (TRP) and a second set of one or more PUSCH repetitions to a second TRP; and

process at least one of the first set of PUSCH repetitions based on a first set of default power control parameters or the second set of PUSCH repetitions based on a second set of default power control parameters, wherein:

at least one of: the UE is not provided with an SRI PUSCH power control setting or the DCI lacks an SRS resource indicator (SRI) field;

the first set of default power control parameters comprises a parameter indicating a reference signal (RS) resource index for measuring path loss associated with a first RS resource index based on a PUSCH path loss reference RS ID value of zero; and

the second set of default power control parameters comprises a parameter indicating a RS resource index for measuring path loss associated with a second RS resource index based on a PUSCH path loss reference RS ID value of one.

25. A method for wireless communications by a user equipment (UE), comprising:

receiving a sounding reference signal (SRS) configuration indicating at least a first SRS resource set associated with a first SRS resource indicator (SRI) physical uplink shared channel (PUSCH) power control information element with an identifier (ID) equal to zero and at least a second SRS resource set associated with a second SRI PUSCH power control information element with an ID equal to zero;

receiving downlink control information (DCI) scheduling a first set of one or more PUSCH repetitions to a first transmitter receiver point (TRP) and a second set of one or more PUSCH repetitions to a second TRP; and

transmitting the first and second sets of PUSCH repetitions using at least one of a first set of default power control parameters determined based on a mapping to the first SRI PUSCH power control information element with the ID equal to zero or a second set of default power control parameters determined based on a mapping to the second SRI PUSCH power control information element with the ID equal to zero.

26. A method for wireless communications by a network entity, comprising:

transmitting a sounding reference signal (SRS) configuration indicating at least a first SRS resource set associated with a first SRS resource indicator (SRI) physical uplink shared channel (PUSCH) power control information element with an identifier (ID) equal to zero and at least a second SRS resource set associated with a second SRI PUSCH power control information element with an ID equal to zero for a user equipment (UE);

transmitting downlink control information (DCI) scheduling a first set of one or more PUSCH repetitions to a first transmitter receiver point (TRP) and a second set of one or more PUSCH repetitions to a second TRP; and

processing at least one of the first set of PUSCH repetitions based on a first set of default power control parameters determined based on a mapping to the first SRI PUSCH power control information element with the ID equal to zero or the second set of PUSCH repetitions based on a second set of default power control parameters determined based on a mapping to the second SRI PUSCH power control information element with the ID equal to zero.

Assignments (2)
CORRECTIVE ASSIGNMENT TO CORRECT THE REPLACING SIGNATURE PAGES FOR INVENTORS 1 AND 3 CORRECTING THE SIGNATURE DATE FOR INVENTOR 3 PREVIOUSLY RECORDED AT REEL: 059198 FRAME: 0811. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Recorded Mar 1, 2023
From: CHEN, YITAO; KHOSHNEVISAN, MOSTAFA; YUAN, FANG; LUO, TAO
To: QUALCOMM INCORPORATED
Reel/Frame 062899/0795 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 8, 2022
From: CHEN, YITAO; KHOSHNEVISAN, MOSTAFA; YUAN, FANG; LUO, TAO
To: QUALCOMM INCORPORATED
Reel/Frame 059198/0811 →
Continuity (2)
Continuation PCTCN2021093043 · May 11, 2021
Related Publication 20220369243A1 · Nov 17, 2022
Cited By (3)
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