Terminal apparatus for controlling downlink transmission power and method for same

摘要

A terminal apparatus for controlling downlink signal transmission power and a method for same are disclosed. The present invention is a method and a terminal apparatus for transmitting downlink transmission power, a method for the base station controlling the downlink transmission power in a wireless communication system comprising the steps of: transmitting a physical downlink shared channel (PDSCH) to the terminal through a carrier comprising orthogonal frequency distribution multiplexing (OFDM) symbols which do not have a cell-specific reference signal (CRS); and transmitting an upper layer parameter for controlling the transmission power of the physical downlink shared channel (PDSCH), wherein the upper layer parameter comprises information on at least one of PDSCH energy per resource element (EPRE), channel state information reference signal (CSI-RS) EPRE, and demodulation reference signal (DM-RS) EPRE.

主权项

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.