Patent ID: 9277513
Filing Date: 2016-03-01
CPC Classification: H04L,H04W

Claim Text:
1. A method for controlling downlink transmit power of a downlink signal transmitted from a base station (BS), the method comprising: transmitting, to a user equipment (UE) a power parameter for controlling transmit power of a physical downlink shared channel (PDSCH); and transmitting, to the UE, the PDSCH using the transmit power of the PDSCH, wherein the PDSCH is included in a first type carrier that needs synchronization, wherein the first type carrier is an additional carrier used with a legacy carrier and includes a channel state information reference signal (CSI-RS) and a demodulation reference signal (DMRS), and does not include a cell-specific reference signal (CRS), wherein the power parameter includes at least one of a PDSCH energy per resource element (EPRE), a CSI-RS EPRE and a DMRS EPRE, and wherein the power parameter is calculated based on an orthogonal frequency distribution multiplexing (OFDM) symbol having a reference signal including at least one of a CSI-RS and a DMRS and an OFDM symbol including no reference signal.