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 means of a base station in a wireless communication system using a plurality of antenna ports comprises the steps of: 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 step of mapping to the antenna ports is characterized by being 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 radio communication system, the method comprising:
transmitting, to a user equipment (UE), a higher layer signaling including information indicating a code division multiplexing (CDM) type;
configuring a plurality of resources for a channel state information reference signal (CSI-RS) based on the CDM type; and
transmitting, to the UE, the CSI-RS through the plurality of resources using a plurality of antenna ports,
wherein the CDM type defines CDM values and CDM pattern.
2. The method of claim 1 ,
wherein the higher layer signaling includes information on a number of the plurality of antenna ports,
wherein the CDM type includes a CDM-2 or a CDM-4, and
wherein the CDM-2 is related to orthogonal codes of 2 bits and the CDM-4 is related to orthogonal codes of 4 bits.
3. The method of claim 1 , wherein the CDM type includes a CDM-2 or a CDM-4, and
wherein four resource elements in one resource block are used for one antenna port, in case that the CDM type is the CDM-4.
4. The method of claim 1 , wherein the CDM type includes a CDM-2 or a CDM-4, and
wherein the plurality of the resources are configured by aggregating resources for the CDM-2 or the CDM-4.
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 radio communication system, the method comprising:
receiving, from a base station, a higher layer signaling including information indicating 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
receiving, from the base station, the CSI-RS through the plurality of resources using a plurality of antenna ports,
wherein the CDM type defines CDM values and CDM pattern.
7. The method of claim 6 ,
wherein the higher layer signaling includes information on a number of the plurality of antenna ports,
wherein the CDM type includes a CDM-2 or a CDM-4, and
wherein the CDM- 2 is related to orthogonal codes of 2 bits and the CDM-4 is related to orthogonal codes of 4 bits.
8. The method of claim 6 , wherein the CDM type includes a CDM-2 or a CDM-4, and
wherein four resource elements in one resource block are used for one antenna port, in case that the CDM type is the CDM-4.
9. The method of claim 6 , wherein the CDM type includes a CDM-2 or a CDM-4, and wherein the plurality of the resources are configured by aggregating resources for the CDM-2 or the CDM-4.
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 radio 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 indicating 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
transmit, to the UE, the CSI-RS through the plurality of resources using a plurality of antenna ports,
wherein the CDM type defines CDM values and CDM pattern.
12. The base station of claim 11 , wherein the higher layer signaling includes information on a number of the plurality of antenna ports,
wherein the CDM type includes a CDM-2 or a CDM-4, and
wherein the CDM-2 is related to orthogonal codes of 2 bits and the CDM-4 is related to orthogonal codes of 4 bits.
13. The base station of claim 11 , wherein the CDM type includes a CDM-2 or a CDM-4, and
wherein four resource elements in one resource block are used for one antenna port, in case that the CDM type is the CDM-4.
14. The base station of claim 11 , wherein the CDM type includes a CDM-2 or a CDM-4, and
wherein the plurality of the resources are configured by aggregating resources for the CDM-2 or the CDM-4.
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 indexes of the plurality of the antenna 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 radio 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 indicating 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
receive, from the base station via the transceiver, the CSI-RS through the plurality of resources using a plurality of antenna ports,
wherein the CDM type defines CDM values and CDM pattern.
17. The UE of claim 16 , wherein the higher layer signaling includes information on a number of the plurality of antenna ports,
wherein the CDM type includes a CDM-2 or a CDM-4, and
wherein the CDM-2 is related to orthogonal codes of 2 bits and the CDM-4 is related to orthogonal codes of 4 bits.
18. The UE of claim 16 , wherein the CDM type includes a CDM-2 or a CDM-4, and
wherein four resource elements in one resource block are used for one antenna port, in case that the CDM type is the CDM-4.
19. The UE of claim 16 , wherein the CDM type includes a CDM-2 or a CDM-4, and
wherein the plurality of the resources are configured by aggregating resources for the CDM-2 or the CDM-4.
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.