Reference signal sending method and apparatus

1. A reference signal receiving method, comprising:

determining a time-frequency resource used to carry a first reference signal, wherein the determined time-frequency resource is a dedicated time-frequency resource that is dedicated for carrying at least one second reference signal but is currently unused for the at least one second reference signal; and

obtaining the first reference signal by using the determined time-frequency resource, thereby using a formerly unused time-frequency resource for the at least one second reference signal for the first reference signal,

wherein before the determining the time-frequency resource used to carry the first reference signal, further comprising:

receiving a resource configuration indication, wherein the resource configuration indication indicates the time-frequency resource that carries the first reference signal, and the time-frequency resource is the dedicated time-frequency resource of the at least one second reference signal.

2. The method according to claim 1 , wherein before the determining the time-frequency resource used to carry the first reference signal, further comprising:

receiving a scheduling indication, wherein the scheduling indication indicates that the first reference signal is to be scheduled, and the time-frequency resource that carries the first reference signal is the dedicated time-frequency resource of the at least one second reference signal.

3. The method according to claim 1 , wherein the determined time-frequency resource is within a scheduling period of the first reference signal, and the second reference signal is not scheduled within the scheduling period.

4. The method according to claim 1 , wherein a type of the first reference signal is different from a type of the second reference signal.

5. The method according to claim 1 , wherein the first reference signal is a channel state information-reference signal (CSI-RS), and the second reference signal is a demodulation reference signal (DMRS).

6. A reference signal receiving apparatus, wherein the apparatus is deployed in a terminal, and the apparatus comprises:

a processor; and

a memory storing instructions that when executed configure the processor to perform a reference signal receiving method comprising:

receiving a resource configuration indication, wherein the resource configuration indication indicates a time-frequency resource that carries a first reference signal, and the time-frequency resource is a dedicated time-frequency resource of at least one second reference signal;

determining the time-frequency resource used to carry the first reference signal, wherein the determined time-frequency resource is the dedicated time-frequency resource that is dedicated for carrying the at least one second reference signal but is currently unused for the at least one second reference signal; and

obtaining the first reference signal by using the determined time-frequency resource, thereby using a formerly unused time-frequency resource for the at least one second reference signal for the first reference signal.

7. The apparatus according to claim 6 , wherein the reference signal receiving method further comprises receiving a scheduling indication, wherein the scheduling indication indicates that the first reference signal is to be scheduled, and the time-frequency resource that carries the first reference signal is the dedicated time-frequency resource of the at least one second reference signal.

8. The apparatus according to any one of claim 6 , wherein the determined time-frequency resource is within a scheduling period of the first reference signal, and the second reference signal is not scheduled within the scheduling period.

9. The apparatus according to any one of claim 6 , wherein a type of the first reference signal is different from a type of the second reference signal.

10. The apparatus according to any one of claim 6 , wherein the first reference signal is a channel state information-reference signal (CSI-RS), and the second reference signal is a demodulation reference signal (DMRS).

11. A terminal, wherein the terminal comprises a processor and a transceiver, wherein the processor is configured to:

receive a resource configuration indication by using the transceiver, wherein the resource configuration indication indicates a time-frequency resource that carries a first reference signal, and the time-frequency resource is a dedicated time-frequency resource of at least one second reference signal;

determine the time-frequency resource used to carry the first reference signal, wherein the determined time-frequency resource is t e dedicated time-frequency resource that is dedicated for carrying the at least one second reference signal but is currently unused for the at least one second reference signal; and

obtain the first reference signal by using the determined time-frequency resource, thereby using a formerly unused time-frequency resource for the at least one second reference signal for the first reference signal.

12. The terminal according to claim 11 , wherein the processor is further configured to:

receive a scheduling indication by using the transceiver, wherein the scheduling indication indicates that the first reference signal is to be scheduled, and the time-frequency resource that carries the first reference signal is the dedicated time-frequency resource of the at least one second reference signal.

13. The terminal according to any one of claim 11 , wherein the determined time-frequency resource is within a scheduling period of the first reference signal, and the second reference signal is not scheduled within the scheduling period.

14. The terminal according to any one of claim 11 , wherein a type of the first reference signal is different from a type of the second reference signal.

15. The terminal according to any one of claim 11 , wherein the first reference signal is a channel state information-reference signal (CSI-RS), and the second reference signal is a demodulation reference signal (DMRS).