Method and device for transmitting reference signals

1. A method for transmitting reference signals performed by a terminal, time-frequency resources for the terminal being divided into multiple groups of time-frequency resources, the method comprising:

selecting a reference signal port for each group of time-frequency resources from candidate reference signal ports; and

transmitting reference signals by using the reference signal port corresponding to each group of time-frequency resources in one transmission;

wherein the candidate reference signal ports constitute one or more sets of candidate reference signal ports;

wherein the selecting a reference signal port for each group of time-frequency resources from candidate reference signal ports includes:

selecting a reference signal port for a first group of time-frequency resources from a first set of candidate reference signal ports; and

determining, from the first set of candidate reference signal ports, reference signal ports for other groups of time-frequency resources of the multiple groups of time-frequency resources, according to the selected reference signal port for the first group of time-frequency resources and a reference signal port offset parameter.

2. The method of claim 1 , wherein the time-frequency resources for the terminal being divided into multiple groups of time-frequency resources including:

physical resource blocks for the terminal being divided into multiple groups of physical resource blocks according to time-frequency resource division parameters.

3. The method of claim 1 , wherein the time-frequency resources for the terminal being divided into multiple groups of time-frequency resources including:

reference signal symbols for the terminal being divided into multiple groups of reference signal symbols according to time-frequency resource division parameters.

4. The method of claim 1 , wherein when the candidate reference signal ports constitute multiple sets of candidate reference signal ports,

the multiple sets of candidate reference signal ports correspond to the multiple groups of time-frequency resources,

the selecting a reference signal port for each group of time-frequency resources from candidate reference signal ports includes:

selecting a reference signal port for each group of time-frequency resources from each set of candidate reference signal ports, respectively.

5. The method of claim 1 , wherein each set of candidate reference signal ports in the one or more sets of candidate reference signal ports includes at least reference signal ports corresponding to first-subtype reference signals of the reference signals.

6. The method of claim 1 , further comprising:

determining a reference signal power parameter for each group of time-frequency resources;

wherein the transmitting reference signals by using the reference signal port corresponding to each group of time-frequency resources includes:

transmitting the reference signals by using the reference signal port corresponding to each group of time-frequency resources and with a transmission power indicated by the reference signal power parameter corresponding to each group of time-frequency resources.

7. A terminal, time-frequency resources for the terminal being divided into multiple groups of time-frequency resources, the terminal comprising:

a processor configured to select a reference signal port for each group of time-frequency resources from candidate reference signal ports; and

a transmitter configured to transmit reference signals by using the reference signal port corresponding to each group of time-frequency resources in one transmission;

wherein the candidate reference signal ports constitute one or more sets of candidate reference signal ports; and

wherein the processor selects a reference signal port for a first group of time-frequency resources from a first set of candidate reference signal ports, and determines, from the first set of candidate reference signal ports, reference signal ports for other groups of time-frequency resources of the multiple groups of time-frequency resources according to the selected reference signal port for the first group of time-frequency resources and a reference signal port offset parameter.

8. The terminal of claim 7 , wherein

the processor further determines a reference signal power parameter for each group of time-frequency resources;

wherein the transmitter is further configured to transmit the reference signals by using the reference signal port corresponding to each group of time-frequency resources and with a transmission power indicated by the reference signal power parameter corresponding to each group of time-frequency resources.

9. The terminal of claim 7 , wherein the processor divides physical resource blocks for the terminal into multiple groups of physical resource blocks according to time-frequency resource division parameters.

10. The terminal of claim 7 , wherein the processor divides reference signal symbols for the terminal into multiple groups of reference signal symbols according to time-frequency resource division parameters.

11. The terminal of claim 7 , wherein when the candidate reference signal ports constitute multiple sets of candidate reference signal ports,

the multiple sets of candidate reference signal ports correspond to the multiple groups of time-frequency resources,

the processor selects a reference signal port for each group of time-frequency resources from each set of candidate reference signal ports, respectively.

12. The terminal of claim 7 , wherein each set of candidate reference signal ports in the one or more sets of candidate reference signal ports includes at least reference signal ports corresponding to first-subtype reference signals of the reference signals.