Channel state information-reference signal transmission method and device

1. A channel state information reference signal (CSI-RS) transmission method, comprising:

determining, by a first communication node, CSI-RS indication information;

transmitting, by the first communication node, the CSI-RS indication information to a second communication node;

transmitting or receiving, by the first communication node, a CSI-RS according to the CSI-RS indication information;

wherein the CSI-RS indication information comprises a number of ports for a CSI-RS resource and information of at least one component;

wherein the ports for the CSI-RS resource are used for transmitting the CSI-RS, and the CSI-RS resource is used for carrying the CSI-RS; the component is used for constituting the CSI-RS resource, and the component is a set of resource elements (REs) having relative positional relations;

wherein the information of the component comprises a component pattern, the component pattern indicates that the ports are multiplexed on the component in a following manner: the ports are multiplexed on the component in a code division multiplexing manner, wherein a length of the code division multiplexing is equal to a number of REs comprised on the component.

2. The method according to claim 1 , wherein the component pattern indicates relative positions between the at least one component.

3. The method according to claim 1 , wherein the information of the component further comprises a position of one of the at least one component, and relative positions between the at least one component.

4. The method according to claim 3 , wherein the CSI-RS indication information is configured in a following signaling manner:

configuring the CSI-RS indication information by a radio resource control (RRC) signaling, and indicating one of following information by a downlink control information (DCI) signaling or a media access control control element (MAC CE) signaling:

not transmitting the CSI-RS, or transmitting the CSI-RS in a zero power manner;

an updated position of the component or an updated position of the CSI-RS resource;

transmitting the CSI-RS normally.

5. The method according to claim 1 , wherein in response to transmitting the CSI-RS and a phase tracking reference signal on a same RE, the CSI-RS is transmitted in a zero power manner on the RE corresponding to the CSI-RS, or the CSI-RS is not transmitted on the RE; or

in response to transmitting the CSI-RS and a data demodulation reference signal on a same RE, the CSI-RS is transmitted in the zero power manner on the RE corresponding to the CSI-RS, or the CSI-RS is not transmitted on the RE.

6. The method according to claim 1 , wherein the CSI-RS further has a quasi-co-location attribute, and the quasi-co-location attribute has two of following candidate types:

type 1: ports in a CSI-RS resource are quasi-co-location;

type 2: ports in a component are quasi-co-location;

type 3: ports in a code division multiplexing group are quasi-co-location;

type 4: ports in a CSI-RS resource set are quasi-co-location; and

type 5: ports in a CSI-RS resource are not quasi-co-location;

wherein the quasi-co-location ports are considered to transmit the CSI-RS at a same position.

7. A channel state information reference signal (CSI-RS) transmission method, comprising:

receiving, by a second communication node, CSI-RS indication information transmitted by a first communication node; and

transmitting or receiving, by the second communication node, a CSI-RS according to the received CSI-RS indication information,

wherein the CSI-RS indication information comprises a number of ports for a CSI-RS resource and information of at least one component;

wherein the ports for the CSI-RS resource are used for transmitting the CSI-RS, and the CSI-RS resource is used for carrying the CSI-RS; the component is used for constituting the CSI-RS resource, and the component is a set of resource elements (REs) having relative positional relations;

wherein the information of the component comprises a component pattern, the component pattern indicates that the ports are multiplexed on the component in a following manner: the ports are multiplexed on the component in a code division multiplexing manner, wherein a length of the code division multiplexing is equal to a number of REs comprised on the component.

8. The method according to claim 7 , wherein the component pattern indicates relative positions between the at least one component.

9. The method according to claim 7 , wherein the information of the component further comprises a position of one of the at least one component, and relative positions between the at least one component.

10. The method according to claim 7 , wherein in response to transmitting the CSI-RS and a phase tracking reference signal on a same RE, the CSI-RS is transmitted in a zero power manner on the RE corresponding to the CSI-RS, or the CSI-RS is not transmitted on the RE; or

in response to transmitting the CSI-RS and a data demodulation reference signal on a same RE, the CSI-RS is transmitted in the zero power manner on the RE corresponding to the CSI-RS, or the CSI-RS is not transmitted on the RE.

11. The method according to claim 7 , wherein the CSI-RS further has a quasi-co-location attribute, and the quasi-co-location attribute has two of following candidate types:

type 1: ports in a CSI-RS resource are quasi-co-location;

type 2: ports in a component are quasi-co-location;

type 3: ports in a code division multiplexing group are quasi-co-location;

type 4: ports in a CSI-RS resource set are quasi-co-location; and

type 5: ports in a CSI-RS resource are not quasi-co-location;

wherein the quasi-co-location ports are considered to transmit the CSI-RS at a same position.

12. A channel state information reference signal (CSI-RS) transmission device, configured in a first communication node and comprising:

a processor; and

a memory for storing instructions executable by the process,

wherein the processor, when executing the instructions, is configured to:

determine CSI-RS indication information;

transmit the CSI-RS indication information to a second communication node; and

transmit or receive a CSI-RS according to the CSI-RS indication information;

wherein the CSI-RS indication information comprises a number of ports for a CSI-RS resource and information of at least one component;

where the ports for the CSI-RS resource are used for transmitting the CSI-RS, and the CSI-RS resource is used for carrying the CSI-RS; the component is used for constituting the CSI-RS resource, and the component is a set of resource elements (REs) having relative positional relations;

wherein the information of the component comprises a component pattern, the component pattern indicates that the ports are multiplexed on the component in a following manner: the ports are multiplexed on the component in a code division multiplexing manner, wherein a length of the code division multiplexing is equal to a number of REs comprised on the component.

13. The device according to claim 12 , wherein the component pattern indicates relative positions between the at least one component.

14. The device method according to claim 12 , wherein the information of the component further comprises a position of one of the at least one component, and relative positions between the at least one component.

15. The device method according to claim 12 , wherein in response to transmitting the CSI-RS and a phase tracking reference signal on a same RE, the CSI-RS is transmitted in a zero power manner on the RE corresponding to the CSI-RS, or the CSI-RS is not transmitted on the RE; or

in response to transmitting the CSI-RS and a data demodulation reference signal on a same RE, the CSI-RS is transmitted in the zero power manner on the RE corresponding to the CSI-RS, or the CSI-RS is not transmitted on the RE.

16. The device according to claim 12 , wherein the CSI-RS further has a quasi-co-location attribute, and the quasi-co-location attribute has two of following candidate types:

type 1: ports in a CSI-RS resource are quasi-co-location;

type 2: ports in a component are quasi-co-location;

type 3: ports in a code division multiplexing group are quasi-co-location;

type 4: ports in a CSI-RS resource set are quasi-co-location; and

type 5: ports in a CSI-RS resource are not quasi-co-location;

wherein the quasi-co-location ports are considered to transmit the CSI-RS at a same position.

17. A channel state information reference signal (CSI-RS) transmission device, configured in a second communication node and comprising:

a processor; and

a memory for storing instructions executable by the process, wherein the processor, when executing the instructions, is configured to implement the method of claim 7 .