Power headroom report method and apparatus for mobile communication system supporting carrier aggregation

摘要

A Power Headroom Report (PHR) method and apparatus for a mobile communication system supporting carrier aggregation are provided. The method for transmitting PHR of a terminal in a mobile communication system includes configuring, when a PHR is triggered for at least one activated serving cell, an extended PHR for the at least one activated serving cell, the PHR being triggered when a change of a downlink path loss in the at least one activated serving cell is greater than a predetermined threshold value, and transmitting the extended PHR.

主权项

1. A method for obtaining power headroom information of a terminal in a mobile communication system, the method comprising:
receiving information for a path loss reference of at least one cell; triggering a power headroom report (PHR) if a path loss is changed more than a threshold for at least one activated cell which is used as the path loss reference; and obtaining power headroom information for each activated serving cell based on if there is an uplink resource allocated for new transmission.