Method and apparatus for transmitting CSI-RS and data using partial muting of CSI-RS

摘要

A method and apparatus for transmitting Channel State Information Reference Symbol (CSI-RS) and data with partial muting of the CSI-RS are proposed. The method includes determining a CSI-RS pattern to be used among CSI-RS pattern candidates, determining a muting pattern for muting some resource elements constituting CSI-RS pattern candidates except for the determined CSI-RS pattern, mapping data symbols and CSI-RS to resource elements in a resource grid with rate patching in consideration of the CSI-RS pattern and muting pattern, and transmitting the data symbols and CSI-RS to a terminal.

主权项

1. A method for transmitting a channel state information reference signal (CSI-RS) by a base station, the method comprising:
selecting a CSI-RS pattern including a first set of resource elements (REs); selecting a muting pattern including a second set of REs; transmitting an indicator indicating the muting pattern among a plurality of predefined muting patterns and period information applied to the muting pattern via higher layer signaling; mapping data symbols and the CSI-RS to REs based on the CSI-RS pattern and the muting pattern; and transmitting the data symbols and the CSI-RS to a user equipment (UE), wherein the data symbols are mapped to REs that are not included in the CSI-RS pattern and the muting pattern, wherein the muting pattern is selected among the plurality of predefined muting patterns and the plurality of predefined muting patterns are included in a set of CSI-RS pattern candidates, and wherein the indicator comprises a plurality of bits corresponding to the plurality of predefined muting patterns.