Techniques and apparatuses for differential back-off for long term evolution advanced (LTE-A) uplink carrier aggregation (ULCA)

A wireless communication device, comprising:

• a memory;
• and
• one or more processors operatively coupled to the memory, the one or more processors configured to:
• determine a plurality of differential back-off values based at least in part on at least one of a set of parameter values relating to one or more of a plurality of uplink carriers associated with uplink carrier aggregation or any uplink grants associated with the plurality of uplink carriers,
• the plurality of differential back-off values relating to a specific absorption rate (SAR) back-off or a thermal back-off of the wireless communication device;
• and
• apply the plurality of differential back-off values to a respective plurality of transmit powers associated, respectively, with the plurality of uplink carriers.

A non-transitory computer-readable medium storing one or more instructions for wireless communication, the one or more instructions comprising:

• one or more instructions that, when executed by one or more processors of a wireless communication device, cause the one or more processors to:
• determine a plurality of differential back-off values based at least in part on at least one of a set of parameter values relating to one or more of a plurality of uplink carriers associated with uplink carrier aggregation or any uplink grants associated with the plurality of uplink carriers,
• the plurality of differential back-off values relating to a specific absorption rate (SAR) back-off or a thermal back-off of the wireless communication device;
• and
• apply the plurality of differential back-off values to a respective plurality of transmit powers associated, respectively, with the plurality of uplink carriers.

An apparatus for wireless communication, comprising:

• means for determining a plurality of differential back-off values based at least in part on at least one of a set of parameter values relating to one or more of a plurality of uplink carriers associated with uplink carrier aggregation or any uplink grants associated with the plurality of uplink carriers,
• the plurality of differential back-off values relating to a specific absorption rate (SAR) back-off or a thermal back-off of the apparatus;
• and
• means for applying the plurality of differential back-off values to a respective plurality of transmit powers associated, respectively, with the plurality of uplink carriers.