US 9,521,654 B2 · Method for estimating channel in wireless access system and apparatus for same

Abstract

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.

Claims12

Dependent claims

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.

1 more element

A user equipment performing channel estimation in a wireless access system having a macro cell and a pico cell coexisting therein, the user equipment comprising:

a RF (Radio Frequency) unit configured to transmit and receive radio signals;
and
a processor configured to:
determine whether or not a CRS (Cell-specific Reference Signal) being inserted in a subframe of the pico cell respective to a MBSFN ABS overlays with a CRS being inserted in a MBSFN ABS of the macro cell, in case the MBSFN (Multicast Broadcast Single Frequency Network) ABS (Almost Blank Subframe) is being transmitted from the macro cell;
perform 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
decode a channel received from a subframe of the pico cell by using the channel estimation value.

4 more elements

Dependencies are inferred from the claim text.

Method for estimating channel in wireless access system and apparatus for same

Life of this patent

Method for estimating channel in wireless access system and apparatus for same

Life of this patent

Abstract

Claims12