Patent ID: 9300502
Filing Date: 2016-03-29
CPC Classification: H04B,H04L

Claim Text:
1. A method for supporting coordinated precoding in a wireless access system, comprising: transmitting, by a user equipment (UE), a measurement result of a plurality of interference signals transmitted from a plurality of contiguous base stations (BSs) to a base station (BS); receiving, by the user equipment (UE), quasi-orthogonal CDM (Q-CDM) code information decided by the base station (BS) and the plurality of contiguous base stations (BSs) from the base station (BS) so as to remove some of the plurality of interference signals; transmitting, by the user equipment (UE), channel state information (CSI) to the base station (BS) on the basis of the Q-CDM code; and receiving, by the user equipment (UE), downlink data to which the coordinated precoding is applied, from the base station (BS), wherein an interference signal having a higher intensity than a predetermined threshold value from among the plurality of interference signals is removed through the Q-CDM code, and an interference signal having a lower intensity than a predetermined threshold value from among the plurality of interference signals is removed through null precoding.