Power control for wireless communications associated with preempted resources
Systems, apparatuses, and methods are described for wireless communications. A wireless device may have different capabilities for preemption. A base station may use a signaling format to indicate a transmission power command and a preemption indicator. A wireless device may receive the signaling format and may determine, based on the transmission power command and the preemption indicator, whether to stop a transmission or to reduce a transmission power.
1. A method comprising:
receiving, by a wireless device, information comprising:
a plurality of power control commands; and
a set of uplink preemption indicators that is associated with a power control command of the plurality of the power control commands and that indicates which one or more uplink resources, of a set of uplink resources, are preempted; and
dropping, based on the power control command of the plurality of the power control commands, a scheduled uplink transmission via at least one preempted uplink resource, of the set of uplink resources, indicated by the set of uplink preemption indicators.
2. The method of claim 1 , wherein the information further comprises:
a second set of uplink preemption indicators that is associated with a second power control command of the plurality of the power control commands and that indicates which one or more uplink resources, of a second set of uplink resources, are preempted; and
wherein the method further comprises transmitting, based on the second power control command of the plurality of the power control commands, uplink data via at least one preempted uplink resource, of the second set of uplink resources, indicated by the second set of uplink preemption indicators.
3. The method of claim 1 , wherein the power control command, of the plurality of power control commands, is associated with dropping of scheduled uplink transmission associated with the at least one preempted uplink resource, of the set of uplink resources, indicated by the set of uplink preemption indicators, and
wherein a second power control command, of the plurality of power control commands, is associated with an adjusted transmission power for transmission of uplink data.
4. The method of claim 1 , further comprising:
determining the set of uplink resources from a plurality of sets of uplink resources, wherein each set of the plurality of sets of uplink resources is associated with one of the plurality of power control commands.
5. The method of claim 1 , wherein the receiving the information comprises receiving the information in at least one of:
downlink control information (DCI);
a radio resource control (RRC) message; or
a medium access control (MAC) control element (CE).
6. The method of claim 1 , wherein the set of uplink preemption indicators comprises a bit, for each uplink resource of the set of uplink resources, that indicates whether that uplink resource is preempted.
7. The method of claim 1 , further comprising:
receiving one or more configuration parameters comprising a second power control command indicating a power adjustment value; and
transmitting, based on the power adjustment value, uplink data via one or more uplink resources that are not preempted.
8. The method of claim 1 , wherein the power control command, of the plurality of power control commands, is associated with a first cell, and
wherein a second power control command, of the plurality of power control commands, is associated with a second cell that is different from the first cell.
9. The method of claim 1 , further comprising:
receiving one or more configuration parameters comprising a power control command associated with a power adjustment value; and
determining, based on the power adjustment value and a value of a second power control command of the plurality of power control commands, an uplink power for transmission of uplink data via at least one preempted uplink resource of a second set of uplink resources.
10. A method comprising:
receiving, by a wireless device, first information indicating:
a first power control command; and
a plurality of uplink radio resources for the wireless device;
receiving second information comprising:
a second power control command associated with one or more preempted resources; and
an uplink preemption indicator, associated with the one or more preempted resources, indicating a first uplink radio resource of the plurality of uplink radio resources that is not preempted; and
transmitting, based on the uplink preemption indicator indicating the first uplink radio resource that is not preempted and using a transmission power associated with the first power control command, a portion of uplink data via the first uplink radio resource.
11. The method of claim 10 , wherein the uplink preemption indicator indicates a second uplink radio resource of the plurality of uplink radio resources that is preempted.
12. The method of claim 11 , further comprising:
dropping, based on the uplink preemption indicator and based on the second power control command, a scheduled transmission of a second portion of the uplink data.
13. The method of claim 11 , further comprising:
determining, based on the second power control command and the uplink preemption indicator, an adjusted transmission power associated with transmission, via the second uplink radio resource, of a second portion of the uplink data; and
transmitting, using the adjusted transmission power and via the second uplink radio resource, the second portion of the uplink data.
14. The method of claim 10 , wherein the second power control command comprises:
a first transmission power control field associated with a first cell; and
a second transmission power control field associated with a second cell.
15. The method of claim 10 , wherein the receiving the second information comprises receiving the second information in at least one of:
downlink control information (DCI);
a radio resource control (RRC) message; or
a medium access control (MAC) control element (CE).
16. A wireless device comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the wireless device to:
receive information comprising:
a plurality of power control commands; and
a set of uplink preemption indicators that is associated with a power control command of the plurality of the power control commands and that indicates which one or more uplink resources, of a set of uplink resources, are preempted; and
drop, based on the power control command of the plurality of the power control commands, a scheduled uplink transmission via at least one preempted uplink resource, of the set of uplink resources, indicated by the set of uplink preemption indicators.
17. The wireless device of claim 16 , wherein the information further comprises:
a second set of uplink preemption indicators that is associated with a second power control command of the plurality of the power control commands and that indicates which one or more uplink resources, of a second set of uplink resources, are preempted; and
wherein the instructions, when executed by the one or more processors, cause the wireless device to transmit, based on the second power control command of the plurality of the power control commands, uplink data via at least one preempted uplink resource, of the second set of uplink resources, indicated by the second set of uplink preemption indicators.
18. The wireless device of claim 16 , wherein the power control command, of the plurality of power control commands, is associated with dropping of scheduled uplink transmission associated with the at least one preempted uplink resource, of the set of uplink resources, indicated by the set of uplink preemption indicators, and
wherein a second power control command, of the plurality of power control commands, is associated with an adjusted transmission power for transmission of uplink data.
19. The wireless device of claim 16 , wherein the instructions, when executed by the one or more processors, cause the wireless device to:
determine the set of uplink resources from a plurality of sets of uplink resources, and
wherein each set of the plurality of sets of uplink resources is associated with one of the plurality of power control commands.
20. The wireless device of claim 16 , wherein the instructions, when executed by the one or more processors, cause the wireless device to receive the information by receiving the information in at least one of:
downlink control information (DCI);
a radio resource control (RRC) message; or
a medium access control (MAC) control element (CE).
21. The wireless device of claim 16 , wherein the set of uplink preemption indicators comprises a bit, for each uplink resource of the set of uplink resources, that indicates whether that uplink resource is preempted.
22. The wireless device of claim 16 , wherein the instructions, when executed by the one or more processors, cause the wireless device to:
receive one or more configuration parameters comprising a second power control command indicating a power adjustment value; and
transmit, based on the power adjustment value, uplink data via one or more uplink resources that are not preempted.
23. The wireless device of claim 16 , wherein the power control command, of the plurality of power control commands, is associated with a first cell, and
wherein a second power control command, of the plurality of power control commands, is associated with a second cell that is different from the first cell.
24. The wireless device of claim 16 , wherein the instructions, when executed by the one or more processors, cause the wireless device to:
receive one or more configuration parameters comprising a power control command associated with a power adjustment value; and
determine, based on the power adjustment value and a value of a second power control command of the plurality of power control commands, an uplink power for transmission of uplink data via at least one preempted uplink resource of a second set of uplink resources.
25. A wireless device comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the wireless device to:
receive first information indicating:
a first power control command; and
a plurality of uplink radio resources for the wireless device;
receive second information comprising:
a second power control command associated with one or more preempted resources; and
an uplink preemption indicator, associated with the one or more preempted resources, indicating a first uplink radio resource of the plurality of uplink radio resources that is not preempted; and
transmit, based on the uplink preemption indicator indicating the first uplink radio resource that is not preempted and using a transmission power associated with the first power control command, a portion of uplink data via the first uplink radio resource.
26. The wireless device of claim 25 , wherein the uplink preemption indicator indicates a second uplink radio resource of the plurality of uplink radio resources that is preempted.
27. The wireless device of claim 26 , wherein the instructions, when executed by the one or more processors, cause the wireless device to:
drop, based on the uplink preemption indicator and based on the second power control command, a scheduled transmission of a second portion of the uplink data.
28. The wireless device of claim 26 , wherein the instructions, when executed by the one or more processors, cause the wireless device to:
determine, based on the second power control command and the uplink preemption indicator, an adjusted transmission power associated with transmission, via the second uplink radio resource, of a second portion of the uplink data; and
transmit, using the adjusted transmission power and via the second uplink radio resource, the second portion of the uplink data.
29. The wireless device of claim 25 , wherein the second power control command comprises:
a first transmission power control field associated with a first cell; and
a second transmission power control field associated with a second cell.
30. The wireless device of claim 25 , wherein the instructions, when executed by the one or more processors, cause the wireless device to receive the second information by receiving the second information in at least one of:
downlink control information (DCI);
a radio resource control (RRC) message; or
a medium access control (MAC) control element (CE).