METHOD FOR ESTIMATING CHANNEL IN WIRELESS ACCESS SYSTEM AND APPARATUS FOR SAME

摘要

Disclosed in the present invention are a method for estimating a channel in a wireless access system in which a macro cell and a pico cell coexist, and an apparatus for same. More specifically, the present invention comprises the steps of: determining whether a cell-specific reference signal (CRS) that is inserted into a subframe of a pico cell, which corresponds to a multicast broadcast signal frequency network (MBSFN) almost blank subframe (ABS), overlaps with a CRS that is inserted into an MBSFN ABS of the macro cell, when the MBSFN ABS is transmitted from the macro cell; estimating the channel by using a CRS from the pico cell that remains after excluding the CRS that overlaps with the CRS of the macro cell; and decoding the channel which is received from the subframe of the pico cell by using a channel estimation value.

主权项

1. A method of estimating a channel in a wireless access system having a macro cell and a pico cell coexisting therein, the method performed by a user equipment and comprising:
determining whether or not a CRS (Cell-specific Reference Signal) being inserted in a subframe of the pico cell respective to the MBSFN ABS overlays with a CRS being inserted in a MBSFN ABS of the macro cell, when a MBSFN (Multicast Broadcast Single Frequency Network) ABS (Almost Blank Subframe) is being transmitted from the macro cell; performing channel estimation by using remaining CRSs excluding the CRS overlaying with the CRS of the macro cell among the CRSs of the pico cell; and decoding a channel received from a subframe of the pico cell by using the channel estimation value.