Power efficient anchor carrier selection in lte advanced

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

• determining a first transmit power level associated with a first component carrier of a plurality of component carriers, the first component carrier being an anchor carrier for the plurality of component carriers in a downlink carrier aggregation mode;
• estimating a second transmit power level associated with a second component carrier of the plurality of component carriers;
• determining, based at least in part on the first transmit power level and the second transmit power level, a transmission current consumption relationship in the downlink carrier aggregation mode;
• determining, based at least in part on the determining the transmission current consumption relationship, to switch the anchor carrier from the first component carrier to the second component carrier in the downlink carrier aggregation mode;
• and
• modifying a measurement report, based at least in part on the determining to switch the anchor carrier, to satisfy a condition for switching the anchor carrier from the first component carrier to the second component carrier in the downlink carrier aggregation mode.

An apparatus for wireless communication, in a system comprising:

• a processor;
• memory in electronic communication with the processor;
• and
• one or more instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:
• determine a second component carrier of a plurality of component carriers in a downlink carrier aggregation mode satisfies throughput requirements associated with an uplink data transmission;
• determine, based at least in part on the throughput requirements being satisfied, a first transmit power level associated with a first component carrier of the plurality of component carriers, the first component carrier being an anchor carrier for the plurality of component carriers in the downlink carrier aggregation mode;
• estimate a second transmit power level associated with the second component carrier;
• determine, based at least in part on the first transmit power level and the second transmit power level, a transmission current consumption relationship;
• and
• determine, based at least in part on the transmission current consumption relationship, whether to switch the anchor carrier from the first component carrier to the second component carrier in the downlink carrier aggregation mode.