Uplink transmission power configuration method and apparatus for mobile communication system

摘要

A method and an apparatus for configuring uplink transmission power and apparatus in a mobile communication system supporting downlink and uplink carrier aggregation are provided. The method includes determining a per-terminal maximum transmission power and per-serving cell maximum transmission powers based on ΔTC,c as a value for allowing an adjustment of additional transmission power for multiple serving cells, Maximum Power Reductionc (MPRc) as a value determined according to an amount of transmission resources allocated to the terminal, and Additive-MPRc (A-MPRc) as a value determined according to local characteristics and frequency band characteristics, determining per-serving cell uplink transmission powers by restricting required transmission powers for respective serving cells to the corresponding per-serving cell maximum transmission powers, comparing a sum of the per-serving cell uplink transmission powers with the per-terminal maximum transmission power, and adjusting the per-serving cell uplink transmission powers according to comparison result.

主权项

1. A method of a terminal supporting carrier aggregation, the method comprising:
receiving uplink scheduling information for performing uplink transmission in at least two serving cells from a base station; identifying a first uplink maximum transmission power for a first serving cell among the at least two serving cells; identifying a second uplink maximum transmission power for a second serving cell among the at least two serving cells; identifying a third uplink maximum transmission power for the terminal; and identifying a transmission power based on the first uplink maximum transmission power, the second uplink maximum transmission power, and the third uplink maximum transmission power, wherein the at least two serving cells are carrier aggregated for the terminal.