Method and apparatus for determining and transmitting parameter of reference signal, terminal device and base station
The embodiments of the present disclosure disclose a method for determining a parameter of a reference signal, a method for transmitting a parameter of a reference signal, a terminal device and a base station. The determination method includes: obtaining a parameter of a first type of reference signal by a first signaling; and determining a parameter of a second type of reference signal according to the obtained parameter of the first type of reference signal, and the first type of reference signal and/or the second type of reference signal include at least one of: reference signal for data demodulation, reference signal for phase noise compensation, reference signal for Doppler shift compensation, or extended reference signal for data demodulation.
1. A method for wireless communication, comprising:
determining, by a network apparatus, a first parameter associated with a demodulation reference signal;
determining, by the network apparatus, according to the first parameter, a second parameter associated with a second reference signal; and
selectively receiving or transmitting, based on the demodulation reference signal, the second reference signal according to the second parameter,
wherein the second parameter is used by the network apparatus to generate a sequence of the second reference signal, and
wherein the sequence of the second reference signal in a frequency-domain location is determined based on a sequence of the demodulation reference signal at the same frequency-domain location.
2. The method of claim 1 , wherein the network apparatus is a terminal device, and the method comprising:
receiving, by the terminal device, a Radio Resource Control (RRC) message from a base station, the RRC message indicating a location of a transmission resource block for the second reference signal in a sub-band that comprises multiple transmission blocks.
3. The method of claim 1 , wherein the network apparatus is a base station, and the method comprising:
transmitting, by the base station, a Radio Resource Control (RRC) message to a terminal, the RRC message indicating a location of a transmission resource block for the second reference signal in a sub-band that comprises multiple transmission blocks.
4. The method of claim 1 , wherein the sequence of the second reference signal is a replicate of the sequence of the demodulation reference signal at the same frequency-domain location.
5. The method of claim 1 , wherein the first parameter indicates a port number of the demodulation reference signal, and the second parameter indicates a transmission resource used by the second reference signal.
6. The method of claim 5 , wherein the network apparatus is a terminal device, and the method further comprising:
receiving, by the terminal device, a Radio Resource Control (RRC) message from a base station, the RRC message including a third parameter associated with the second reference signal for determining the second parameter.
7. The method of claim 5 , wherein the network apparatus is a base station, and the method further comprising:
transmitting, by the base station, a Radio Resource Control (RRC) message to a terminal, the RRC message including a third parameter associated with the second reference signal for determining the second parameter.
8. The method of claim 1 , wherein the second reference signal is not received or transmitted in case a time domain orthogonal sequence of the demodulation reference signal is applied.
9. A method for wireless communication, comprising:
determining, by a network apparatus, a first parameter associated with a demodulation reference signal;
determining, by the network apparatus, according to the first parameter, a second parameter associated with a second reference signal; and
selectively receiving or transmitting, based on the demodulation reference signal, the second reference signal according to the second parameter,
wherein the second parameter indicates a number of ports of the second reference signal, and wherein the first parameter indicates L 1 ports of the demodulation reference signal, the method further comprising:
determining L 2 groups of ports based on the L 1 ports, wherein each group of ports corresponds to a same port of the second reference signal, L 1 and L 2 each being a positive integer.
10. The method of claim 9 , wherein the second parameter is used by the network apparatus to generate a sequence of the second reference signal.
11. The method of claim 10 , wherein the network apparatus is a terminal device, and wherein the determining of the first parameter comprises:
receiving, by the terminal device, a Radio Resource Control message that includes the first parameter for generating a sequence of the demodulation reference signal.
12. The method of claim 10 , wherein the network apparatus is a base station, and wherein the determining of the first parameter comprises:
transmitting, by the base station, a Radio Resource Control message that includes the first parameter for generating a sequence of the demodulation reference signal.
13. The method of claim 9 , wherein the determining of the second parameter comprises:
determining a port association between the demodulation reference signal and the second reference signal; and
determining the second parameter based on the first parameter and the port association.
14. The method of claim 9 , wherein the second reference signal is not received or transmitted in case a time domain orthogonal sequence of the demodulation reference signal is applied.
15. A wireless communication device, comprising:
a processor, and
a memory including executable instructions, the instruction upon execution by the processor causing the processor to:
determine a first parameter associated with a demodulation reference signal;
determine, according to the first parameter, a second parameter associated with a second reference signal; and
selectively receive or transmit, based on the demodulation reference signal, the second reference signal according to the second parameter, wherein the second parameter is used to generate a sequence of the second reference signal, and
wherein the sequence of the second reference signal in a frequency-domain location is determined based on a sequence of the demodulation reference signal at the same frequency-domain location.
16. The device of claim 15 , wherein the instruction upon execution by the processor causing the processor to:
receive a Radio Resource Control (RRC) message from a base station, the RRC message indicating a location of a transmission resource block for the second reference signal in a sub-band that comprises multiple transmission blocks.
17. The device of claim 15 , wherein the instruction upon execution by the processor causing the processor to:
transmit a Radio Resource Control (RRC) message to a terminal, the RRC message indicating a location of a transmission resource block for the second reference signal in a sub-band that comprises multiple transmission blocks.
18. The device of claim 15 , wherein the sequence of the second reference signal is a replicate of the sequence of the demodulation reference signal at the same frequency-domain location.
19. The device of claim 15 , wherein the first parameter indicates a port number of the demodulation reference signal, and the second parameter indicates a transmission resource used by the second reference signal.
20. The device of claim 19 , wherein the instruction upon execution by the processor causing the processor to:
receive a Radio Resource Control (RRC) message from a base station, the RRC message including a third parameter associated with the second reference signal for determining the second parameter.
21. The device of claim 19 , wherein the instruction upon execution by the processor causing the processor to:
transmit a Radio Resource Control (RRC) message to a terminal, the RRC message including a third parameter associated with the second reference signal for determining the second parameter.
22. The device of claim 15 , wherein the second reference signal is not received or transmitted in case a time domain orthogonal sequence of the demodulation reference signal is applied.
23. A wireless communication device, comprising:
a processor, and
a memory including executable instructions, the instruction upon execution by the processor causing the processor to:
determine a first parameter associated with a demodulation reference signal;
determine, according to the first parameter, a second parameter associated with a second reference signal; and
selectively receive or transmit, based on the demodulation reference signal, the second reference signal according to the second parameter,
wherein the second parameter indicates a number of ports of the second reference signal, wherein the first parameter indicates L 1 ports of the demodulation reference signal, and wherein the instruction upon execution by the processor causing the processor to:
determining L 2 groups of ports based on the L 1 ports, wherein each group of ports corresponds to a same port of the second reference signal, L 1 and L 2 being a positive integer.
24. The device of claim 23 , wherein the second parameter is used to generate a sequence of the second reference signal.
25. The device of claim 24 , wherein the instruction upon execution by the processor causing the processor to:
receive a Radio Resource Control message that includes the first parameter for generating a sequence of the demodulation reference signal.
26. The device of claim 24 , wherein the instruction upon execution by the processor causing the processor to:
transmit a Radio Resource Control message that includes the first parameter for generating a sequence of the demodulation reference signal.
27. The device of claim 23 , wherein the instruction upon execution by the processor causing the processor to:
determine a port association between the demodulation reference signal and the second reference signal; and
determine the second parameter based on the first parameter and the port association.
28. The device of claim 23 , wherein the second reference signal is not received or transmitted in case a time domain orthogonal sequence of the demodulation reference signal is applied.