Method for setting downlink transmission power in wireless access system, and apparatus therefor

摘要

Disclosed are a method for setting downlink transmission power in a wireless access system supporting an environment in which an amount of uplink resources and an amount of downlink resources dynamically change, and an apparatus therefore. Specifically, the method comprises the steps of: classifying resources to be used for downlink transmission into a plurality of sets; setting downlink transmission power to be different for each of the plurality of classified sets; and transmitting a downlink signal by using the set downlink transmission power.

主权项

1. A method for configuring downlink transmit power by a base station (BS) in a wireless access system supporting an environment in which the amount of uplink (UL) resources and the amount of downlink (DL) resources are dynamically changed, the method comprising:
classifying a resource region to be used for downlink transmission into a plurality of resource sets to discriminate a first resource set or a second resource set, wherein the first resource set includes a downlink subframe configured on an uplink-downlink configuration of the BS, and the second resource set includes uplink subframes which are reconfigured as downlink subframes according to an amount of traffic; measuring an interference with a neighbor cell at each of the plurality of resource sets; configuring different downlink transmit (Tx) powers for the each of the plurality of resource sets, according to whether the neighbor cell performs an uplink transmission or a downlink transmission, wherein downlink transmit (Tx) power for the first resource set is configured to be proportional to a power level of a common reference signal (CRS) transmitted from a neighbor base station (BS), and wherein downlink transmit (Tx) power for the second resource set is configured by assigning an offset to the downlink transmit (Tx) power of the first resource set; and transmitting, to a user equipment (UE) a downlink signal at the configured downlink transmit (Tx) power.