Method and apparatus for transmitting CSI-RS and data using partial muting of CSI-RS
AssigneeSamsung Electronics Co., Ltd.
InventorsSung Tae Kim, Youn Sun Kim, Jin-Kyu Han, Myung Hoon Yeon, Cheng Shan
Life of this patent
Estimating the term…
Abstract
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.
Claims12
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.
A method for receiving a channel state information reference signal (CSI-RS) by a user equipment (UE), the method comprising:
- receiving an indicator indicating a muting pattern among a plurality of predefined muting patterns and period information applied to the muting pattern via higher layer signaling;
- receiving data symbols and the CSI-RS mapped to resource elements (REs) from a base station;
- extracting the data symbols based on a CSI-RS pattern including a first set of REs and the muting pattern including a second set of REs;
- 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.
A base station for transmitting a channel state information reference signal (CSI-RS), the base station comprising:
- a transceiver transmitting and receiving signals to and from a user equipment (UE);
- and
- a controller controls to select a CSI-RS pattern including a first set of resource elements (REs), select a muting pattern including a second set of REs, to transmit 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, map data symbols and the CSI-RS to REs based on the CSI-RS pattern and the muting pattern, and transmit the data symbols and the CSI-RS to a user equipment (UE), and
- 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.
A user equipment apparatus for receiving a channel state information reference signal (CSI-RS), the apparatus comprising:
- a transceiver transmitting and receiving signals to and from a base station;
- and
- a controller controls to receive an indicator indicating a muting pattern among a plurality of predefined muting patterns and period information applied to the muting pattern via higher layer signaling, to receive data symbols and the CSI-RS mapped to resource elements (REs) from a base station, and extract the data symbols based on a CSI-RS pattern including a first set of REs and the muting pattern including a second set of REs, and
- 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.
Dependencies are inferred from the claim text.