Transmission configuration indicator state mode switching
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a transmission configuration indicator (TCI) state to use for communications with a network entity after switching between TCI modes (e.g., a joint TCI state mode and a separate TCI states mode for uplink transmission and downlink reception). A UE may autonomously switch between the TCI modes based on a trigger event, and may send an indication to a network entity of the trigger event prior to communicating. A UE may identify a TCI configuration with unconfigured power control parameters. The UE may determine a common power control configuration for communicating with a network entity based on applying a rule to the TCI configuration to determine the power control parameters.
1. A method for wireless communications at a user equipment (UE), comprising:
identifying a transmission configuration indicator configuration having unconfigured power control parameters in a list of power control parameters and being associated with a transmission configuration indicator mode, the list of power control parameters including a single power control configuration, the transmission configuration indicator mode supporting at least one of a joint transmission configuration indicator state for an uplink transmission and a downlink reception and separate transmission configuration indicator states for the uplink transmission and the downlink reception;
applying, prior to receiving an indication of an association between transmission configuration indicator configurations and power control parameters, a rule to determine a common power control configuration based at least in part on the identifying, wherein the rule is applied to the transmission configuration indicator configuration to determine one or more power control parameters of the unconfigured power control parameters; and
communicating based at least in part on the common power control configuration.
2. The method of claim 1 , wherein the single power control configuration is not associated with a transmission configuration indicator state identifier.
3. The method of claim 1 , wherein the one or more power control parameters comprise a network entity received power per resource block, a fractional power control factor, closed loop index, a pathloss reference signal, or any combination thereof.
4. The method of claim 1 , further comprising:
determining one or more transmission configuration indicator states corresponding to a channel or a reference signal based at least in part on applying the common power control configuration to the one or more transmission configuration indicator states according to the rule.
5. The method of claim 4 , wherein the rule specifies the common power control configuration comprises the single power control configuration.
6. The method of claim 4 , further comprising:
determining the single power control configuration corresponds to the common power control configuration; and
applying the common power control configuration to a set of transmission configuration indicator states having the unconfigured power control parameters.
7. The method of claim 1 , further comprising:
determining a capability of the UE to support beam misalignment.
8. The method of claim 7 , further comprising:
transmitting a message comprising capability information corresponding to the capability of the UE to support the beam misalignment.
9. The method of claim 7 , further comprising:
determining a quasi-colocation relationship between a downlink reference signal and at least one power control parameter of the one or more power control parameters based at least in part on the capability of the UE to support the beam misalignment, wherein the beam misalignment is between the downlink reference signal and the at least one power control parameter, and wherein the communicating is based at least in part on determining the quasi-colocation relationship.
10. The method of claim 1 , further comprising:
receiving signaling activating the transmission configuration indicator mode.
11. The method of claim 1 , further comprising:
transmitting a message comprising capability information corresponding to a capability of the UE to support the transmission configuration indicator mode.
12. The method of claim 1 , further comprising:
receiving the indication of the association between the transmission configuration indicator configurations and the power control parameters; and
updating the list of power control parameters based at least in part on the association.
13. A user equipment (UE), comprising:
one or more memories storing processor-executable code; and
one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the UE to:
identify a transmission configuration indicator configuration having unconfigured power control parameters in a list of power control parameters and being associated with a transmission configuration indicator mode, the list of power control parameters including a single power control configuration, the transmission configuration indicator mode supporting at least one of a joint transmission configuration indicator state for an uplink transmission and a downlink reception and separate transmission configuration indicator states for the uplink transmission and the downlink reception;
apply, prior to receiving an indication of an association between transmission configuration indicator configurations and power control parameters, a rule to determine a common power control configuration based at least in part on the identifying, wherein the rule is applied to the transmission configuration indicator configuration to determine one or more power control parameters of the unconfigured power control parameters; and
communicate based at least in part on the common power control configuration.
14. The UE of claim 13 , wherein the single power control configuration is not associated with a transmission configuration indicator state identifier.
15. The UE of claim 13 , wherein the one or more power control parameters comprise a network entity received power per resource block, a fractional power control factor, closed loop index, a pathloss reference signal, or any combination thereof.
16. The UE of claim 13 , wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:
determine one or more transmission configuration indicator states corresponding to a channel or a reference signal based at least in part on applying the common power control configuration to the one or more transmission configuration indicator states according to the rule.
17. The UE of claim 16 , wherein the rule specifies the common power control configuration comprises the single power control configuration.
18. The UE of claim 16 , wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:
determine the single power control configuration corresponds to the common power control configuration; and
apply the common power control configuration to a set of transmission configuration indicator states having the unconfigured power control parameters.
19. The UE of claim 13 , wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:
determine a capability of the UE to support beam misalignment.
20. The UE of claim 19 , wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:
transmit a message comprising capability information corresponding to the capability of the UE to support the beam misalignment.
21. The UE of claim 19 , wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:
determine a quasi-colocation relationship between a downlink reference signal and at least one power control parameter of the one or more power control parameters based at least in part on the capability of the UE to support the beam misalignment, wherein the beam misalignment is between the downlink reference signal and the at least one power control parameter, and wherein the communicating is based at least in part on determining the quasi-colocation relationship.
22. The UE of claim 13 , wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:
receive signaling activating the transmission configuration indicator mode.
23. The UE of claim 13 , wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:
transmit a message comprising capability information corresponding to a capability of the UE to support the transmission configuration indicator mode.
24. A non-transitory computer-readable medium storing code for wireless communications, the code comprising instructions executable by one or more processors to:
identify a transmission configuration indicator configuration having unconfigured power control parameters in a list of power control parameters and being associated with a transmission configuration indicator mode, the list of power control parameters including a single power control configuration, the transmission configuration indicator mode supporting at least one of a joint transmission configuration indicator state for an uplink transmission and a downlink reception and separate transmission configuration indicator states for the uplink transmission and the downlink reception;
apply, prior to receiving an indication of an association between transmission configuration indicator configurations and power control parameters, a rule to determine determining a common power control configuration based at least in part on the identifying, wherein the rule is applied to the transmission configuration indicator configuration to determine one or more power control parameters of the unconfigured power control parameters; and
communicate based at least in part on the common power control configuration.
25. The non-transitory computer-readable medium of claim 24 , wherein the single power control configuration is not associated with a transmission configuration indicator state identifier.
26. The non-transitory computer-readable medium of claim 24 , wherein the one or more power control parameters comprise a network entity received power per resource block, a fractional power control factor, closed loop index, a pathloss reference signal, or any combination thereof.
27. The non-transitory computer-readable medium of claim 24 , wherein the instructions are further executable by the one or more processors to:
determine one or more transmission configuration indicator states corresponding to a channel or a reference signal based at least in part on applying the common power control configuration to the one or more transmission configuration indicator states according to the rule.
28. The non-transitory computer-readable medium of claim 27 , wherein the rule specifies the common power control configuration comprises the single power control configuration.
29. The non-transitory computer-readable medium of claim 27 , wherein the instructions are further executable by the one or more processors to:
determine the single power control configuration corresponds to the common power control configuration; and
apply the common power control configuration to a set of transmission configuration indicator states having the unconfigured power control parameters.
30. A user equipment (UE) for wireless communications, comprising:
processing circuitry associated with one or more memory devices and configured to cause the UE to:
identify a transmission configuration indicator configuration having unconfigured power control parameters in a list of power control parameters and being associated with a transmission configuration indicator mode, the list of power control parameters including a single power control configuration, the transmission configuration indicator mode supporting at least one of a joint transmission configuration indicator state for an uplink transmission and a downlink reception and separate transmission configuration indicator states for the uplink transmission and the downlink reception;
apply, prior to receiving an indication of an association between transmission configuration indicator configurations and power control parameters, a rule to determine a common power control configuration based at least in part on the identifying, wherein the rule is applied to the transmission configuration indicator configuration to determine one or more power control parameters of the unconfigured power control parameters; and
communicate based at least in part on the common power control configuration.