Power headroom reporting

摘要

The disclosure relates to a method for a method for a user equipment configured in carrier aggregation mode to assist an e Node B in estimating the total available output power for each component carrier. The method comprises reporting from the user equipment to the e Node B at least one of RF architecture information of the user equipment, and at least one power parameter value. The disclosure also relates to the corresponding e Node B, user equipment, computer program and storage medium.

主权项

1. A method employed by an e Node B for estimating the total available output power for each of a plurality of component carriers when the e Node B is communicating with a user equipment (UE) configured in carrier aggregation mode, the method comprising:
receiving, by the e Node B, a power headroom report and power reduction for a first component carrier among the plurality of component carriers; estimating total available output power of the first component carrier based on the power headroom report and power reduction; and making a scheduling decision based on the total available output power of the first component carrier, wherein the power reduction is a function of a Maximum Power Reduction (MPR) or an Additional-Maximum Power Reduction (A-MPR) additional possible power scaling applied based on the RF architecture of the UE, wherein the power headroom report contains a total aggregated power for all component carriers and a value of power reduction is a first value when the same power amplifier is associated with the first component carrier and a second component carrier based on the RF architecture of the UE, and wherein the power headroom report contains an available power for the first component carrier and a value of power reduction is a second value when the first power amplifier is associated with only the first component carrier and the second power amplifier is associated with only the second component carrier based on the RF architecture of the UE.