Patent ID: 9288771
Filing Date: 2016-03-15
CPC Classification: H04J,H04L,H04W

Claim Text:
1. A method for transmitting a power headroom report (PHR) by a user equipment (UE) in a communication system supporting a plurality of carriers, the method comprising: transmitting, to the eNode B, a power headroom report (PHR) related to the plurality of carriers configured for the UE, wherein the power headroom report (PHR) comprises a first type power headroom (PH) and a second type power headroom (PH), wherein while the first type power headroom (PH) is calculated for a power headroom report (PHR) related to a primary carrier and a non-primary carrier, the second type power headroom (PH) is calculated for a power headroom report (PHR) related to the primary carrier other than the non-primary carrier, wherein the first type power headroom (PH) is calculated for a physical uplink shared channel (PUSCH) transmission, wherein the second type power headroom (PH) is calculated for a simultaneous transmission of a physical uplink control channel (PUCCH) and the PUSCH, wherein the power headroom report (PHR) further comprises information indicating at least one carrier index related to the first type power headroom (PH), wherein a maximum UE output power is configured per carrier, the second type power headroom (PH) is calculated based on a maximum UE output power for the primary carrier, and wherein the power headroom report (PHR) is transmitted as a type of MAC Control Element.