Interference measurement method and apparatus

1. A method, comprising:

receiving, by a first functional entity of a third node from a first node, an interference measurement configuration message, wherein the interference measurement configuration message comprises interference measurement type indication information, and the interference measurement type indication information indicates to the first functional entity of the third node to perform interference measurement by using a receive beam of a second functional entity of the third node, and wherein an integrated access and backhaul (IAB) network comprises at least the first node, a second node, and the third node;

determining, by the first functional entity of the third node based on an interference measurement type indication comprised in the interference measurement configuration message, that the receive beam of the second functional entity of the third node is usable for detecting a reference signal;

receiving, by the first functional entity of the third node using the receive beam of the second functional entity of the third node, the reference signal from the second node, the reference signal usable for interference measurement; and

performing, by the first functional entity of the third node, the interference measurement,

wherein the first node is an upper-level node of the third node, and the second node is an interference source node of the third node.

2. The method according to claim 1 , wherein the interference measurement configuration message further comprises reference signal resource indication information of a second functional entity of the second node, and the reference signal resource indication information of the second functional entity of the second node comprises one or a combination of:

a reference signal resource identifier of the second functional entity of the second node;

transmit power of the reference signal of the second functional entity of the second node that is usable for interference measurement, and a time-frequency resource location to which the reference signal of the second functional entity of the second node that is usable for interference measurement is mapped; or

a transmission periodicity of the reference signal of the second functional entity of the second node that is usable for interference measurement.

3. The method according to claim 2 , further comprising:

determining, based on the reference signal resource indication information comprised in the interference measurement configuration message, a time-frequency resource indicated in the interference measurement configuration message; and

wherein receiving, by the first functional entity using the receive beam of the second functional entity, the reference signal usable for interference measurement, comprises:

receiving, by the first functional entity using the receive beam of the second functional entity and on the determined time-frequency resource, the reference signal usable for interference measurement.

4. The method according to claim 2 , wherein the reference signal resource identifier is a resource identifier of a channel state information-reference signal or a resource identifier of a sounding reference signal.

5. The method according to claim 1 , wherein receiving, by the first functional entity of the third node, the interference measurement configuration message comprises:

receiving, by the first functional entity of the third node from the first node, the interference measurement configuration message.

6. The method according to claim 1 , wherein the interference measurement configuration message is carried in a radio resource control protocol message or a media access control control element.

7. The method according to claim 1 , wherein the first functional entity of the third node is a mobile termination entity of the third node.

8. An apparatus, comprising:

a transceiver, configured to:

receive an interference measurement configuration message from a first node, wherein the interference measurement configuration message comprises interference measurement type indication information, and the interference measurement type indication information indicates to a first functional entity of a third node to perform interference measurement by using a receive beam of a second functional entity of the third node; and

a processor, configured to:

determine, based on an interference measurement type indication in the interference measurement configuration message, that the receive beam of the second functional entity of the third node is usable for detecting a reference signal;

indicate to the transceiver to receive, using the receive beam of the second functional entity of the third node, the reference signal usable for interference measurement; and

perform, by the first functional entity of the third node, the interference measurement,

wherein the transceiver is further configured to receive, using the receive beam of the second functional entity of the third node, the reference signal from a second node, the reference signal usable for interference measurement,

wherein the first node is an upper-level node of the third node, and the second node is an interference source node of the third node.

9. The apparatus according to claim 8 , wherein the interference measurement configuration message further comprises reference signal resource indication information of a second functional entity of the second node, and the reference signal resource indication information of the second functional entity of the second node comprises one or a combination of:

a reference signal resource identifier of the second functional entity of the second node;

transmit power of the reference signal of the second functional entity of the second node and that is usable for interference measurement, and a time-frequency resource location to which the reference signal of the second functional entity of the second node that is usable for interference measurement is mapped; or

a transmission periodicity of the reference signal of the second functional entity of the second node that is usable for interference measurement.

10. The apparatus according to claim 9 , wherein the processor is further configured to:

determine, based on the reference signal resource indication information in the interference measurement configuration message, a time-frequency resource indicated in the interference measurement configuration message; and

wherein the processor being configured to indicate to the transceiver to receive, using the receive beam of the second functional entity of the third node, the reference signal usable for interference measurement, comprises the processor being configured to:

indicate to the transceiver to receive, using the receive beam of the second functional entity of the third node and on the determined time-frequency resource, the reference signal usable for interference measurement.

11. The apparatus according to claim 9 , wherein the reference signal resource identifier is a resource identifier of a channel state information-reference signal or a resource identifier of a sounding reference signal.

12. The apparatus according to claim 8 , wherein the transceiver being configured to receive the interference measurement configuration message comprises the transceiver being configured to:

receive, from the first node in an integrated access and backhaul (IAB) network, the interference measurement configuration message.

13. The apparatus according to claim 8 , wherein the interference measurement configuration message is carried in a radio resource control protocol message or a media access control control element.

14. The apparatus according to claim 8 , wherein the apparatus is a mobile termination apparatus of an integrated access and backhaul (IAB) node.

15. A non-transitory computer-readable storage medium, comprising instructions, which when executed on a third node, cause the third node to:

receive an interference measurement configuration message from a first node, wherein the interference measurement configuration message comprises interference measurement type indication information, and the interference measurement type indication information indicates to a first functional entity of the third node to perform interference measurement using a receive beam of a second functional entity of the third node;

determine, based on an interference measurement type indication information in the interference measurement configuration message, that the receive beam of the second functional entity of the third node is usable for detecting a reference signal; and

receive, using the receive beam of the second functional entity of the third node, the reference signal from a second node, the reference signal usable for interference measurement; and

perform, by the first functional entity of the third node, the interference measurement,

wherein the first node is an upper-level node of the third node, and the second node is an interference source node of the third node.

16. The non-transitory computer-readable storage medium according to claim 15 , wherein the interference measurement configuration message further comprises reference signal resource indication information of a second functional entity of the second node, and the reference signal resource indication information of the second functional entity of the second node comprises at least one of:

a reference signal resource identifier of the second functional entity of the second node;

transmit power of the reference signal of the second functional entity of the second node that is usable for interference measurement, and a time-frequency resource location to which the reference signal of the second functional entity of the second node that is usable for interference measurement is mapped; or

a transmission periodicity of the reference signal of the second functional entity of the second node that is usable for interference measurement.

17. The non-transitory computer-readable storage medium according to claim 16 , wherein when the instructions are executed, the third node is further caused to:

determine, based on the reference signal resource indication information in the interference measurement configuration message, a time-frequency resource indicated in the interference measurement configuration message; and

wherein receiving, using the receive beam of the second functional entity of the third node, the reference signal usable for interference measurement, comprises:

receiving, using the receive beam of the second functional entity of the third node on the determined time-frequency resource, the reference signal usable for interference measurement.

18. The non-transitory computer-readable storage medium according to claim 16 , wherein the reference signal resource identifier is a resource identifier of a channel state information-reference signal or a resource identifier of a sounding reference signal.

19. The non-transitory computer-readable storage medium according to claim 15 , wherein when the instructions are executed, the third node being caused to receive the interference measurement configuration message comprises the third node being caused to:

receive, from the first node in an integrated access and backhaul (LAB) network, the interference measurement configuration message.

20. The non-transitory computer-readable storage medium according to claim 15 , wherein the interference measurement configuration message is carried in a radio resource control protocol message or a media access control control element.