Interaction between maximum power reduction and power scaling in wireless networks

摘要

Methods, apparatuses, and articles of manufacture are disclosed for adjusting a power level in connection with transmitting parallel uplink channels. In one aspect, a user equipment determines a power-limited condition in which a total transmit power of a group of power-controlled channels exceeds a maximum level in a transmission subframe. The user equipment may determine, in an iterative fashion, power backoff values by which to establish a configured maximum power level. The parallel uplink channels in the group may be prioritized and different backoff values may be used with channels having different priorities. The user equipment may thereafter adjust a transmit power of the power-controlled channels based on the configured maximum power level.

主权项

1. A method, comprising:
comparing a total transmit power of a plurality of power-controlled channels with a maximum power level, wherein the plurality of power-controlled channels comprise control channels and data channels configured for parallel control and data transmission in an uplink subframe; looking up an initial power backoff value to be subtracted from the maximum power level based at least in part on power-frequency profile parameters of the allocated control channels when the total transmit power exceeds the maximum power level; iterating the power backoff value and power-scaling until a change in the power backoff value is less than a predefined threshold, an iterated power backoff value being based at least in part on iterated power-scaling, and wherein iterating the power backoff value is based at least in part on a priority of channels in the plurality of power-controlled channels; and adjusting a transmit power of one or more channels in the plurality of power-controlled channels based on a result of iterating the power backoff value.