Wireless communication method and device

1. A wireless communication method used in a 5G system, comprising:

performing, by a network device, frequency domain resource allocation and/or bandwidth part configuration for a terminal device according to a reference point, wherein the reference point is used for performing frequency domain resource allocation and/or bandwidth part configuration for the terminal device;

wherein the reference point comprises a first reference point and a second reference point, the first reference point is used for performing the bandwidth part configuration for the terminal device, and the second reference point is used for performing the frequency domain resource allocation within the bandwidth part for the terminal device;

wherein the bandwidth part is configured according to the first reference point;

wherein the second reference point is determined according to the configured bandwidth part; and

wherein the frequency domain resource within the bandwidth part is allocated according to the second reference point.

2. The method of claim 1 , further comprising:

sending, by the network device, first information to the terminal device, wherein the first information indicates the first reference point.

3. The method of claim 2 , wherein the first information is carried in a system broadcast message, or a Radio Resource Control (RRC) dedicated signaling.

4. The method of claim 1 , further comprising:

sending, by the network device, a first part of a complete reference signal that is within a bandwidth range allocated for the terminal device, wherein the complete reference signal is determined according to the reference point, wherein a second part of the complete reference signal is outside the bandwidth range allocated for the terminal device.

5. The method of claim 1 , wherein performing, by the network device, frequency domain resource allocation and/or bandwidth part configuration for the terminal device according to the reference point comprises:

sending, by the network device, third information to the terminal device, where the third information indicates:

an offset between the bandwidth part configured for the terminal device and the reference point.

6. The method of claim 5 , wherein the offset between the bandwidth part and the reference point is an offset between a lowest frequency point of the bandwidth part and the reference point.

7. The method of claim 1 , wherein the first reference point is different from the second reference point.

8. A wireless communication method used in a 5G system, comprising:

determining, by a terminal device, a reference point for a network device to perform frequency domain resource allocation and/or bandwidth part configuration for the terminal device, according to the reference point;

wherein the reference point comprises a first reference point and a second reference point, the first reference point is used for performing the bandwidth part configuration for the terminal device, and the second reference point is used for performing the frequency domain resource allocation within the bandwidth part for the terminal device;

wherein the determining, by the terminal device, the reference point for the network device to perform frequency domain resource allocation and/or bandwidth part configuration for the terminal device, according to the reference point, comprises:

determining bandwidth part configuration performed for the terminal device by the network device according to the first reference point;

determining the second reference point according to the configured bandwidth part; and

determining the frequency domain resource allocation within the bandwidth part performed for the terminal device by the network device, according to the second reference point.

9. The method of claim 8 , further comprising:

receiving, by the terminal device, first information sent by the network device, wherein the first information indicates the first reference point.

10. The method of claim 9 , wherein the first information is carried in a system broadcast message, or a Radio Resource Control (RRC) dedicated signaling.

11. The method of claim 8 , further comprising:

receiving, by the terminal device, a first part of a complete reference signal that is within a bandwidth range allocated for the terminal device, wherein the complete reference signal is determined according to the reference point, wherein a second part of the complete reference signal is outside the bandwidth range allocated for the terminal device.

12. The method of claim 8 , further comprising:

receiving, by the terminal device, third information sent by the network device, where the third information indicates:

an offset between the bandwidth part configured for the terminal device and the reference point.

13. The method of claim 12 , wherein the offset between the bandwidth part and the reference point is an offset between a lowest frequency point of the bandwidth part and the reference point.

14. The method of claim 8 , wherein the first reference point is different from the second reference point.

15. A network device used in a 5G system, comprising:

a processor;

a memory; and

a transceiver,

wherein the processor, the memory and the transceiver communicate with each other through an internal connection, transmission control and/or data signals, such that the network device performs:

performing frequency domain resource allocation and/or bandwidth part configuration for a terminal device according to a reference point, where the reference point is used for performing frequency domain resource allocation and/or bandwidth part configuration for the terminal device;

wherein the reference point comprises a first reference point and a second reference point, the first reference point is used for performing the bandwidth part configuration for the terminal device, and the second reference point is used for performing the frequency domain resource allocation within the bandwidth part for the terminal device;

wherein the bandwidth part is configured according to the first reference point;

wherein the second reference point is determined according to the configured bandwidth part; and

wherein the frequency domain resource within the bandwidth part is allocated according to the second reference point.

16. The network device of claim 15 , wherein the network device further performs:

sending first information to the terminal device, wherein the first information indicates the first reference point.

17. The network device of claim 15 , wherein the network device further performs:

sending a first part of a complete reference signal that is within a bandwidth range allocated for the terminal device, wherein the complete reference signal is determined according to the reference point, wherein a second part of the complete reference signal is outside the bandwidth range allocated for the terminal device.

18. The network device of claim 15 , wherein the network device further performs:

sending third information to the terminal device, where the third information indicates:

an offset between the bandwidth part configured for the terminal device and the reference point, and

wherein the offset between the bandwidth part and the reference point is an offset between a lowest frequency point of the bandwidth part and the reference point.

19. The network device of claim 15 , wherein the first reference point is different from the second reference point.

20. A terminal device used in a 5G system, comprising:

a processor;

a memory; and

a transceiver,

wherein the processor, the memory and the transceiver communicate with each other through an internal connection, transmission control and/or data signals, such that the terminal device performs:

determining a reference point for a network device to perform frequency domain resource allocation and/or bandwidth part configuration for the terminal device, according to the reference point;

wherein the reference point comprises a first reference point and a second reference point, the first reference point is used for performing the bandwidth part configuration for the terminal device, and the second reference point is used for performing the frequency domain resource allocation within the bandwidth part for the terminal device;

wherein the determining the reference point for the network device to perform frequency domain resource allocation and/or bandwidth part configuration for the terminal device, according to the reference point, comprises:

determining bandwidth part configuration performed for the terminal device by the network device according to the first reference point;

determining the second reference point according to the configured bandwidth part; and

determining the frequency domain resource allocation within the bandwidth part performed for the terminal device by the network device, according to the second reference point.

21. The terminal device of claim 20 , wherein the terminal device further performs:

receiving, first information sent by the network device, wherein the first information indicates the first reference point.

22. The terminal device of claim 20 , wherein the terminal device further performs:

receiving, by the terminal device, a first part of a complete reference signal that is within a bandwidth range allocated for the terminal device, wherein the complete reference signal is determined according to the reference point, wherein a second part of the complete reference signal is outside the bandwidth range allocated for the terminal device.

23. The terminal device of claim 20 , wherein the terminal device further performs:

receiving third information sent by the network device, where the third information indicates:

an offset between the bandwidth part configured for the terminal device and the reference point, and

wherein the offset between the bandwidth part with respect to the reference point is an offset between a lowest frequency point of the bandwidth part and the reference point.

24. The terminal device of claim 20 , wherein the first reference point is different from the second reference point.