Signal transmission method and communication device

Abstract

A signal transmission method and a communication device are provided. The method includes the following: A first device receives a first reference signal at a target frequency domain location within a first bandwidth. The first reference signal is used for frequency offset estimation. The target frequency domain location includes one or more of the following: a first frequency domain location within a first frequency band within a first bandwidth, wherein the frequency of the first frequency band is higher than the frequency domains of other frequency bands within the first bandwidth; and a second frequency domain location within a second frequency band within a first bandwidth, wherein the frequency of the second frequency band is lower than the frequency domains of other frequency bands within the first bandwidth. In this application, the first reference signal is transmitted at the first frequency domain location and / or the second frequency domain location within the first bandwidth. Compared to frequency offset estimation methods based on multiple filters, the solution in the embodiments of this application does not excessively limit the number of filters in the first device, thus helping to expand the application scenarios of frequency offset estimation methods.

Claims

1. A signal transmission method, The first device includes receiving a first reference signal at a target frequency domain position within a first bandwidth, The first reference signal is used for frequency offset estimation. The aforementioned target frequency domain position is A first frequency domain position within a first frequency band within the first bandwidth, wherein the frequency of the first frequency band is higher than the frequency domain of other frequency bands within the first bandwidth other than the first frequency band, A second frequency domain position within a second frequency band within the first bandwidth, wherein the frequency of the second frequency band is lower than the frequency domain of other frequency bands within the first bandwidth other than the second frequency band, Including one or more of the following: A signal transmission method characterized by the following:

2. If the target frequency domain position includes a first frequency domain position and a second frequency domain position, The first frequency domain position and the second frequency domain position overlap in the time domain, or The first frequency domain position and the second frequency domain position are arranged alternately in the time domain. The method according to feature 1.

3. If the target frequency domain position includes the first frequency domain position, the first frequency domain position is located at a first frequency distance from the upper limit frequency of the first bandwidth, and / or If the target frequency domain position includes the second frequency domain position, the second frequency domain position is located at a second frequency distance from the lower limit frequency of the first bandwidth. The method according to 1 or 2, characterized by the above.

4. The first frequency distance and / or the second frequency distance are determined based on one or more parameters of the frequency offset performance of the first device and the frequency offset adjustment accuracy of the first device. The method according to any one of claims 1 to 3, characterized by the features described herein.

5. The frequency range of the first bandwidth is associated with one or more of the capabilities of the first device, the type of the first device, and the bandwidth range of the target signal received by the first device. The method according to any one of claims 1 to 4.

6. The frequency offset estimation is used by the first device to receive the target signal, and the first bandwidth is different from the bandwidth for transmitting the target signal. The method according to any one of claims 1 to 5, characterized by the features described herein.

7. The aforementioned method, The first device performs envelope detection on the first reference signal using a filter and obtains an output value corresponding to the first reference signal. The first device performs frequency offset estimation based on the output value corresponding to the first reference signal, Further including, The method according to any one of claims 1 to 6, characterized by the features described herein.

8. The method further includes the first device receiving a second reference signal in a second bandwidth, The second reference signal is used to identify a reference value, and the reference value is used for the frequency offset estimation. The method according to any one of claims 1 to 7, characterized by the features described herein.

9. The frequency domain position of the second reference signal is determined based on a third frequency distance, the third frequency distance being associated with one or more of the center frequency position of the second bandwidth, the upper frequency position of the second bandwidth, and the lower frequency position of the second bandwidth. The method according to feature 8.

10. The third frequency distance is, The frequency distance between the frequency domain position of the second reference signal and the center frequency position of the second bandwidth, The frequency distance between the frequency domain position of the second reference signal and the upper frequency position of the second bandwidth, and The frequency distance between the frequency domain position of the second reference signal and the lower frequency limit position of the second bandwidth, Including one or more of the following: The method according to feature 9.

11. The frequency domain position of the second reference signal is associated with the operating frequency band of the filter in the first device. The method according to any one of claims 8 to 10, characterized by the features described above.

12. The first device includes a plurality of filters, each of which is used to receive a second reference signal. The method according to 11, characterized by the features described above.

13. The time-domain positions of the second reference signals received by each of the aforementioned filters overlap in the time domain, or The time-domain positions of the second reference signal received by each of the aforementioned filters are arranged alternately in the time domain. The method according to 12, characterized by the features described above.

14. The second bandwidth is different from the first bandwidth, or the second bandwidth is the same as the first bandwidth. The method according to any one of claims 8 to 13, characterized by the features described above.

15. The frequency domain position of the first reference signal is associated with the operating frequency band of the filter in the first device. The method according to any one of claims 1 to 14, characterized by the features described herein.

16. A signal transmission method, The second device includes transmitting a first reference signal at a target frequency domain position within a first bandwidth, The first reference signal is used for frequency offset estimation. The aforementioned target frequency domain position is A first frequency domain position within a first frequency band within the first bandwidth, wherein the frequency of the first frequency band is higher than the frequency domain of other frequency bands within the first bandwidth other than the first frequency band, A second frequency domain position within a second frequency band within the first bandwidth, wherein the frequency of the second frequency band is lower than the frequency domain of other frequency bands within the first bandwidth other than the second frequency band, Including one or more of the following: A signal transmission method characterized by the following:

17. If the target frequency domain position includes a first frequency domain position and a second frequency domain position, The first frequency domain position and the second frequency domain position overlap in the time domain, or The first frequency domain position and the second frequency domain position are arranged alternately in the time domain. The method according to 16, characterized by...

18. If the target frequency domain position includes the first frequency domain position, the first frequency domain position is located at a first frequency distance from the upper limit frequency of the first bandwidth, and / or If the target frequency domain position includes the second frequency domain position, the second frequency domain position is located at a second frequency distance from the lower limit frequency of the first bandwidth. The method according to 16 or 17, characterized by the features described herein.

19. The first frequency distance and / or the second frequency distance are determined based on one or more parameters of the frequency offset performance of the first device and the frequency offset adjustment accuracy of the first device. The method according to any one of claims 16 to 18, characterized by the features described herein.

20. The frequency range of the first bandwidth is associated with one or more of the capabilities of the first device, the type of the first device, and the bandwidth range of the target signal received by the first device. The method according to any one of claims 16 to 19, characterized by...

21. The frequency offset estimation is used by the first device to receive the target signal, and the first bandwidth is different from the bandwidth for transmitting the target signal. The method according to any one of claims 16 to 20, characterized by...

22. The method further includes the second device transmitting a second reference signal in a second bandwidth, The second reference signal is used to identify a reference value, and the reference value is used for the frequency offset estimation. The method according to any one of claims 16 to 21, characterized by...

23. The frequency domain position of the second reference signal is determined based on a third frequency distance, the third frequency distance being associated with one or more of the center frequency position of the second bandwidth, the upper frequency position of the second bandwidth, and the lower frequency position of the second bandwidth. The method according to the feature of 22.

24. The third frequency distance is, The frequency distance between the frequency domain position of the second reference signal and the center frequency position of the second bandwidth, The frequency distance between the frequency domain position of the second reference signal and the upper frequency position of the second bandwidth, and The frequency distance between the frequency domain position of the second reference signal and the lower frequency limit position of the second bandwidth, Including one or more of the following: The method according to the feature of 23.

25. The frequency domain position of the second reference signal is associated with the operating frequency band of the filter in the first device. The method according to any one of claims 22 to 24, characterized by...

26. The first device includes a plurality of filters, each of which is used to receive a second reference signal. The method according to the present invention of the present invention.

27. The time-domain positions of the second reference signals received by each of the aforementioned filters overlap in the time domain, or The time-domain positions of the second reference signal received by each of the aforementioned filters are arranged alternately in the time domain. The method according to the feature of 26.

28. The second bandwidth is different from the first bandwidth, or the second bandwidth is the same as the first bandwidth. The method according to any one of claims 22 to 27, characterized by the features described herein.

29. The frequency domain position of the first reference signal is associated with the operating frequency band of the filter in the first device. The method according to any one of claims 16 to 28, characterized by...

30. A communication device, The aforementioned communication device is a first device and includes a receiving unit, The receiving unit is configured to receive a first reference signal at a target frequency domain position within a first bandwidth. The first reference signal is used for frequency offset estimation. The aforementioned target frequency domain position is A first frequency domain position within a first frequency band within the first bandwidth, wherein the frequency of the first frequency band is higher than the frequency domain of other frequency bands within the first bandwidth other than the first frequency band, A second frequency domain position within a second frequency band within the first bandwidth, wherein the frequency of the second frequency band is lower than the frequency domain of other frequency bands within the first bandwidth other than the second frequency band, Including one or more of the following: A communication device characterized by the following features.

31. If the target frequency domain position includes a first frequency domain position and a second frequency domain position, The first frequency domain position and the second frequency domain position overlap in the time domain, or The first frequency domain position and the second frequency domain position are arranged alternately in the time domain. The communication device according to claim 30.

32. If the target frequency domain position includes the first frequency domain position, the first frequency domain position is located at a first frequency distance from the upper limit frequency of the first bandwidth, and / or If the target frequency domain position includes the second frequency domain position, the second frequency domain position is located at a second frequency distance from the lower limit frequency of the first bandwidth. The communication device according to claim 30 or 31, characterized in that it is a communication device.

33. The first frequency distance and / or the second frequency distance are determined based on one or more parameters of the frequency offset performance of the first device and the frequency offset adjustment accuracy of the first device. A communication device according to any one of claims 30 to 32, characterized by the features described herein.

34. The frequency range of the first bandwidth is associated with one or more of the capabilities of the first device, the type of the first device, and the bandwidth range of the target signal received by the first device. A communication device according to any one of claims 30 to 33, characterized by the features described herein.

35. The frequency offset estimation is used by the first device to receive the target signal, and the first bandwidth is different from the bandwidth for transmitting the target signal. A communication device according to any one of claims 30 to 34, characterized by the features described herein.

36. The aforementioned communication device further comprises a processing unit, The processing unit is configured to perform envelope detection on the first reference signal using a filter and to obtain an output value corresponding to the first reference signal. The processing unit is configured to perform frequency offset estimation based on the output value corresponding to the first reference signal. A communication device according to any one of claims 30 to 35, characterized by the features described herein.

37. The receiving unit is configured to receive a second reference signal in a second bandwidth, The second reference signal is used to identify a reference value, and the reference value is used for the frequency offset estimation. A communication device according to any one of claims 30 to 36, characterized by the features described herein.

38. The frequency domain position of the second reference signal is determined based on a third frequency distance, the third frequency distance being associated with one or more of the center frequency position of the second bandwidth, the upper frequency position of the second bandwidth, and the lower frequency position of the second bandwidth. The communication device according to feature 37.

39. The third frequency distance is, The frequency distance between the frequency domain position of the second reference signal and the center frequency position of the second bandwidth, The frequency distance between the frequency domain position of the second reference signal and the upper frequency position of the second bandwidth, and The frequency distance between the frequency domain position of the second reference signal and the lower frequency limit position of the second bandwidth, Including one or more of the following: The communication device according to claim 38, characterized by the features described above.

40. The frequency domain position of the second reference signal is associated with the operating frequency band of the filter in the first device. A communication device according to any one of claims 37 to 39, characterized by the features described herein.

41. The first device includes a plurality of filters, each of which is used to receive a second reference signal. The communication device according to feature 40.

42. The time-domain positions of the second reference signals received by each of the aforementioned filters overlap in the time domain, or The time-domain positions of the second reference signal received by each of the aforementioned filters are arranged alternately in the time domain. The communication device according to feature 41.

43. The second bandwidth is different from the first bandwidth, or the second bandwidth is the same as the first bandwidth. A communication device according to any one of claims 37 to 42.

44. The frequency domain position of the first reference signal is associated with the operating frequency band of the filter in the first device. A communication device according to any one of claims 30 to 43.

45. A communication device, The aforementioned communication device is a second device, comprising a transmitting unit, The transmitting unit is configured to transmit a first reference signal at a target frequency domain position within a first bandwidth. The first reference signal is used for frequency offset estimation. The aforementioned target frequency domain position is A first frequency domain position within a first frequency band within the first bandwidth, wherein the frequency of the first frequency band is higher than the frequency domain of other frequency bands within the first bandwidth other than the first frequency band, A second frequency domain position within a second frequency band within the first bandwidth, wherein the frequency of the second frequency band is lower than the frequency domain of other frequency bands within the first bandwidth other than the second frequency band, Including one or more of the following: A communication device characterized by the following features.

46. If the target frequency domain position includes a first frequency domain position and a second frequency domain position, The first frequency domain position and the second frequency domain position overlap in the time domain, or The first frequency domain position and the second frequency domain position are arranged alternately in the time domain. The communication device according to feature 45.

47. If the target frequency domain position includes the first frequency domain position, the first frequency domain position is located at a first frequency distance from the upper limit frequency of the first bandwidth, and / or If the target frequency domain position includes the second frequency domain position, the second frequency domain position is located at a second frequency distance from the lower limit frequency of the first bandwidth. The communication device according to feature 45 or 46.

48. The first frequency distance and / or the second frequency distance are determined based on one or more parameters of the frequency offset performance of the first device and the frequency offset adjustment accuracy of the first device. A communication device according to any one of claims 45 to 47, characterized by the features described herein.

49. The frequency range of the first bandwidth is associated with one or more of the capabilities of the first device, the type of the first device, and the bandwidth range of the target signal received by the first device. A communication device according to any one of claims 45 to 48, characterized by the features described above.

50. The frequency offset estimation is used by the first device to receive the target signal, and the first bandwidth is different from the bandwidth for transmitting the target signal. A communication device according to any one of claims 45 to 49.

51. The transmitting unit is configured to transmit a second reference signal in a second bandwidth, The second reference signal is used to identify a reference value, and the reference value is used for the frequency offset estimation. A communication device according to any one of claims 45 to 50, characterized by the features described above.

52. The frequency domain position of the second reference signal is determined based on a third frequency distance, the third frequency distance being associated with one or more of the center frequency position of the second bandwidth, the upper frequency position of the second bandwidth, and the lower frequency position of the second bandwidth. The communication device according to claim 51, characterized by the features described above.

53. The third frequency distance is, The frequency distance between the frequency domain position of the second reference signal and the center frequency position of the second bandwidth, The frequency distance between the frequency domain position of the second reference signal and the upper frequency position of the second bandwidth, and The frequency distance between the frequency domain position of the second reference signal and the lower frequency limit position of the second bandwidth, Including one or more of the following: The communication device according to claim 52.

54. The frequency domain position of the second reference signal is associated with the operating frequency band of the filter in the first device. A communication device according to any one of claims 51 to 53, characterized by the features described herein.

55. The first device includes a plurality of filters, each of which is used to receive a second reference signal. The communication device according to feature 54.

56. The time-domain positions of the second reference signals received by each of the aforementioned filters overlap in the time domain, or The time-domain positions of the second reference signal received by each of the aforementioned filters are arranged alternately in the time domain. The communication device according to claim 55, characterized by the features described above.

57. The second bandwidth is different from the first bandwidth, or the second bandwidth is the same as the first bandwidth. A communication device according to any one of claims 51 to 56, characterized by the features described herein.

58. The frequency domain position of the first reference signal is associated with the operating frequency band of the filter in the first device. A communication device according to any one of claims 45 to 57, characterized by the features described herein.

59. A communication device comprising a transceiver, memory, and a processor, The memory is configured to store a program, and the processor is configured to call the program in the memory and control the transceiver to receive or transmit a signal, causing the communication device to perform the method according to any one of claims 1 to 29. A communication device characterized by the following features.

60. A device equipped with a processor, The processor is configured to call a program from memory and cause the device to execute the method according to any one of claims 1 to 29. A device characterized by the following features.

61. A chip equipped with a processor, The processor is configured to call a program from memory and cause the device to which the chip is attached to execute the method according to any one of claims 1 to 29. A chip characterized by the following features.

62. A computer-readable storage medium, A program is stored in the computer-readable storage medium, and the program causes the computer to execute the method according to any one of claims 1 to 29. A computer-readable storage medium characterized by the following features.

63. A computer program product that includes a program, The program causes a computer to perform the method described in any one of claims 1 to 29. A computer program product characterized by the following features.

64. It is a computer program, The computer program causes the computer to perform the method described in any one of claims 1 to 29. A computer program characterized by the following features.

Images