Method and device for transmitting and receiving feedback signal in wireless communication system
A method, provided by the present disclosure, of transmitting a reference signal by a base station in a wireless communication system using a plurality of antenna ports including mapping wireless resources, for transmitting a reference signal, to a plurality of antenna ports for transmitting the reference signal; and using the wireless resources and transmitting the reference signal to a terminal through the mapped antenna ports. The mapping to the antenna ports is executed on the basis of a combination of a first mapping pattern between the wireless resources and the antenna ports and a second mapping pattern between the wireless resources and the antenna ports.
1. A method performed by a base station in a wireless communication system, the method comprising:
transmitting, to a user equipment (UE), a higher layer signaling including information associated with a number of a plurality of antenna ports and information associated with a code division multiplexing (CDM) type, the information associated with the CDM type defines a CDM value and a CDM pattern;
configuring a plurality of resources for a channel state information reference signal (CSI-RS) based on the CDM type and the number of the plurality of antenna ports; and
transmitting, to the UE, the CSI-RS through the plurality of resources using the plurality of antenna ports.
2. The method of claim 1 ,
wherein the CDM type indicates one of a CDM-2 or a CDM-4.
3. The method of claim 2 ,
wherein the CDM-2 is related to orthogonal codes of 2 bits and the CDM-4 is related to orthogonal codes of 4 bits.
4. The method of claim 2 ,
wherein the plurality of the resources are configured by aggregating resources for the CDM-2 or the CDM-4, and
wherein the information associated with the CDM type consists of 2 bits.
5. The method of claim 1 ,
wherein indexes of the plurality of the antenna ports are determined based on a number of antenna ports for a CSI-RS configuration, and
wherein the plurality of resources are mapped to the plurality of the antenna ports based on the CDM type.
6. A method performed by a user equipment (UE) in a wireless communication system, the method comprising:
receiving, from a base station, a higher layer signaling including information associated with a number of a plurality of antenna ports and information associated with a code division multiplexing (CDM) type;
identifying a plurality of resources for a channel state information reference signal (CSI-RS) based on the CDM type and the number of the plurality of antenna ports; and
receiving, from the base station, the CSI-RS through the plurality of resources associated with the plurality of antenna ports,
wherein CDM values and CDM pattern are defined based on the CDM type.
7. The method of claim 6 ,
wherein the CDM type indicates one of a CDM-2 or a CDM-4.
8. The method of claim 7 ,
wherein the CDM-2 is related to orthogonal codes of 2 bits and the CDM-4 is related to orthogonal codes of 4 bits.
9. The method of claim 7 ,
wherein the plurality of the resources are configured by aggregating resources for the CDM-2 or the CDM-4, and
wherein the information associated with the CDM type consists of 2 bits.
10. The method of claim 6 ,
wherein indexes of the plurality of the antenna ports are determined based on a number of antenna ports for a CSI-RS configuration, and
wherein the plurality of resources are mapped to the plurality of the antenna ports based on the CDM type.
11. A base station in a wireless communication system, the base station comprising:
a transceiver; and at least one processor configured to:
transmit, to a user equipment via the transceiver, a higher layer signaling including information associated with a number of a plurality of antenna ports and information associated with a code division multiplexing (CDM) type;
configure a plurality of resources for a channel state information reference signal (CSI-RS) based on the CDM type and the number of the plurality of antenna ports; and
transmit, to the UE, the CSI-RS through the plurality of resources associated with the plurality of antenna ports, wherein CDM values and CDM pattern are defined based on the CDM type.
12. The base station of claim 11 ,
wherein the CDM type indicates one of a CDM-2 or a CDM-4.
13. The base station of claim 12 ,
wherein the CDM-2 is related to orthogonal codes of 2 bits and the CDM-4 is related to orthogonal codes of 4 bits.
14. The base station of claim 12 ,
wherein the plurality of the resources are configured by aggregating resources for the CDM-2 or the CDM-4, and
wherein the information associated with the CDM type consists of 2 bits.
15. The base station of claim 11 ,
wherein indexes of the plurality of the antenna ports are determined based on a number of antenna ports for a CSI-RS configuration, and
wherein the plurality of resources are mapped to the plurality of the antenna ports based on the CDM type.
16. A user equipment (UE) in a wireless communication system, the UE comprising:
a transceiver; and
at least one processor configured to:
receive, from a base station via the transceiver, a higher layer signaling including information associated with a number of a plurality of antenna ports and information associated with a code division multiplexing (CDM) type;
identify a plurality of resources for a channel state information reference signal (CSI-RS) based on the CDM type and the number of the plurality of antenna ports; and
receive, from the base station via the transceiver, the CSI-RS through the plurality of resources associated with the plurality of antenna ports,
wherein CDM values and CDM pattern are defined based on the CDM type.
17. The UE of claim 16 ,
wherein the CDM type indicates one of a CDM-2 or a CDM-4.
18. The UE of claim 16 ,
wherein the CDM-2 is related to orthogonal codes of 2 bits and the CDM-4 is related to orthogonal codes of 4 bits.
19. The UE of claim 17 ,
wherein the plurality of the resources are configured by aggregating resources for the CDM-2 or the CDM-4, and
wherein the information associated with the CDM type consists of 2 bits.
20. The UE of claim 16 ,
wherein indexes of the plurality of the antenna ports are determined based on a number of antenna ports for a CSI-RS configuration, and
wherein the plurality of resources are mapped to the plurality of the antenna ports based on the CDM type.