Patent ID: 9526077
Filing Date: 2016-12-20
CPC Classification: H04W

Claim Text:
1. A method of a terminal for transmitting a power headroom (PH) report in a mobile communication system supporting carrier aggregation, the method comprising: determining a first maximum transmission power for a first serving cell of multiple activated serving cells based on uplink transmission of at least one other serving cell if the first serving cell transmits a physical uplink shared channel (PUSCH); determining a second maximum transmission power for the first serving cell of the multiple activated serving cells without consideration of uplink transmission of the at least one other serving cell if the first serving cell does not transmit the PUSCH; calculating a PH for the first serving cell based on the first maximum transmission power or the second maximum transmission power; and transmitting, to a base station, an extended PH report (PHR) including respective calculated PHs of the multiple activated serving cells on one of the multiple activated serving cells.