Power control and power headroom for component carrier

A method of wireless communication by a user equipment (UE), comprising:

• receiving a carrier aggregation configuration comprising a first carrier with a first transmission time interval (TTI) length, a second carrier with a second TTI length different from the first TTI length, and a power headroom reporting configuration;
• identifying a power level for the second carrier;
• and
• transmitting a power headroom report for the second carrier based at least in part on the identified power level and the power headroom reporting configuration.

A method of wireless communication by a base station, comprising:

• determining a carrier aggregation configuration for a wireless device comprising a first carrier with a first transmission time interval (TTI) length and second carrier with a second TTI length different from the first TTI length;
• determining a power control configuration for the wireless device based at least in part on the first carrier and the second carrier;
• determining a set of prioritization rules based at least in part on information in a transmission, information layer, signal type, or any combination thereof, wherein determining the power control configuration is based at least in part on the set of prioritization rules;
• and
• scheduling a transmission for the wireless device based at least in part on the set of prioritization rules.

A method of wireless communication by a base station, comprising:

• determining a carrier aggregation configuration comprising a first carrier with a first transmission time interval (TTI) length and second carrier with a second TTI length different from the first TTI length;
• configuring a wireless device with a power headroom reporting configuration comprising at least one first format based at least in part on a virtual power level, at least one second format based at least in part on an uplink (UL) grant, or both;
• and
• receiving a power headroom report based at least in part on the power headroom reporting configuration.

An apparatus for wireless communication, comprising:

• means for determining a carrier aggregation configuration comprising a first carrier with a first transmission time interval (TTI) length, a second carrier with a second TTI length different from the first TTI length, and a power control configuration;
• means for selecting a first transmission power level for the first carrier during a first TTI of the first TTI length;
• means for selecting a second transmission power level for the second carrier during a second TTI of the second TTI length, wherein the first TTI overlaps the second TTI and the second transmission power level is based at least in part on the power control configuration and the first transmission power level;
• means for transmitting on the first carrier based at least in part on the first transmission power level;
• and
• means for transmitting on the second carrier based at least in part on the second transmission power level.

An apparatus for wireless communication, comprising:

• means for determining a carrier aggregation configuration comprising a first carrier with a first transmission time interval (TTI) length, a second carrier with a second TTI length different from the first TTI length, and a power headroom reporting configuration;
• means for identifying a power level for the second carrier;
• and
• means for transmitting a power headroom report for the second carrier based at least in part on the identified power level and the power headroom reporting configuration.

An apparatus for wireless communication, comprising:

• means for determining a carrier aggregation configuration for a wireless device comprising a first carrier with a first transmission time interval (TTI) length and second carrier with a second TTI length different from the first TTI length;
• means for determining a power control configuration for the wireless device based at least in part on the first carrier and the second carrier;
• means for determining a set of prioritization rules based at least in part on information in a transmission, information layer, signal type, or any combination thereof, wherein determining the power control configuration is based at least in part on the set of prioritization rules;
• and
• means for scheduling a transmission for the wireless device based at least in part on the set of prioritization rules.

An apparatus for wireless communication, comprising:

• means for determining a carrier aggregation configuration comprising a first carrier with a first transmission time interval (TTI) length and second carrier with a second TTI length different from the first TTI length;
• means for configuring a wireless device with a power headroom reporting configuration comprising at least one first format based at least in part on a virtual power level, at least one second format based at least in part on an uplink (UL) grant, or both;
• and
• means for receiving a power headroom report based at least in part on the power headroom reporting configuration.

An apparatus for wireless communication, comprising:

• a processor;
• memory in electronic communication with the processor;
• and
• instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:
• receive a carrier aggregation configuration comprising a first carrier with a first transmission time interval (TTI) length, a second carrier with a second TTI length different from the first TTI length, and a power control configuration;
• select a first transmission power level for the first carrier during a first TTI of the first TTI length;
• select a second transmission power level for the second carrier during a second TTI of the second TTI length, wherein the first TTI overlaps the second TTI and the second transmission power level is based at least in part on the power control configuration and the first transmission power level;
• transmit on the first carrier based at least in part on the first transmission power level;
• and
• transmit on the second carrier based at least in part on the second transmission power level.

An apparatus for wireless communication, comprising:

• a processor;
• memory in electronic communication with the processor;
• and
• instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:
• receive a carrier aggregation configuration comprising a first carrier with a first transmission time interval (TTI) length, a second carrier with a second TTI length different from the first TTI length, and a power headroom reporting configuration;
• identify a power level for the second carrier;
• and
• transmit a power headroom report for the second carrier based at least in part on the identified power level and the power headroom reporting configuration.

An apparatus for wireless communication, comprising:

• a processor;
• memory in electronic communication with the processor;
• and
• instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:
• determine a carrier aggregation configuration for a wireless device comprising a first carrier with a first transmission time interval (TTI) length and second carrier with a second TTI length different from the first TTI length;
• determine a power control configuration for the wireless device based at least in part on the first carrier and the second carrier;
• determine a set of prioritization rules based at least in part on information in a transmission, information layer, signal type, or any combination thereof, wherein determining the power control configuration is based at least in part on the set of prioritization rules;
• and
• schedule a transmission for the wireless device based at least in part on the set of prioritization rules.

An apparatus for wireless communication, comprising:

• a processor;
• memory in electronic communication with the processor;
• and
• instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:
• determine a carrier aggregation configuration comprising a first carrier with a first transmission time interval (TTI) length and second carrier with a second TTI length different from the first TTI length;
• configure a wireless device with a power headroom reporting configuration comprising at least one first format based at least in part on a virtual power level, at least one second format based at least in part on an uplink (UL) grant, or both;
• and
• receive a power headroom report based at least in part on the power headroom reporting configuration.

A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable to:

• determine a carrier aggregation configuration comprising a first carrier with a first transmission time interval (TTI) length, a second carrier with a second TTI length different from the first TTI length, and a power control configuration;
• select a first transmission power level for the first carrier during a first TTI of the first TTI length;
• select a second transmission power level for the second carrier during a second TTI of the second TTI length, wherein the first TTI overlaps the second TTI and the second transmission power level is based at least in part on the power control configuration and the first transmission power level;
• transmit on the first carrier based at least in part on the first transmission power level;
• and
• transmit on the second carrier based at least in part on the second transmission power level.

A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable to:

• determine a carrier aggregation configuration comprising a first carrier with a first transmission time interval (TTI) length, a second carrier with a second TTI length different from the first TTI length, and a power headroom reporting configuration;
• identify a power level for the second carrier;
• and
• transmit a power headroom report for the second carrier based at least in part on the identified power level and the power headroom reporting configuration.

A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable to:

• determine a carrier aggregation configuration for a wireless device comprising a first carrier with a first transmission time interval (TTI) length and second carrier with a second TTI length different from the first TTI length;
• determine a power control configuration for the wireless device based at least in part on the first carrier and the second carrier;
• determine a set of prioritization rules based at least in part on information in a transmission, information layer, signal type, or any combination thereof, wherein determining the power control configuration is based at least in part on the set of prioritization rules;
• and
• schedule a transmission for the wireless device based at least in part on the set of prioritization rules.

A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable to:

• determine a carrier aggregation configuration comprising a first carrier with a first transmission time interval (TTI) length and second carrier with a second TTI length different from the first TTI length;
• configure a wireless device with a power headroom reporting configuration comprising at least one first format based at least in part on a virtual power level, at least one second format based at least in part on an uplink (UL) grant, or both;
• and
• receive a power headroom report based at least in part on the power headroom reporting configuration.