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US 12,671,461 B2Granted
Signal transmission method and apparatus
AssigneeHuawei Technologies Co., Ltd.
InventorsHuang Huang, Qianli Ma
Life of this patent
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Abstract
Example signal transmission methods and apparatus are described. In an example method, a transmit end performs linear frequency modulation on Z data signals within frequency domain resources corresponding to K subcarriers to obtain a first signal. A frequency occupied by the first signal is within a frequency range of the frequency domain resources corresponding to the K subcarriers. A frequency occupied by each of data signals obtained through linear frequency modulation changes linearly with time.
Claims20
A method for transmitting signals, comprising:
- performing, by a transmit end, linear frequency modulation on Z data signals within frequency domain resources corresponding to K subcarriers to obtain a first signal, wherein the first signal comprises a cyclic prefix signal, the cyclic prefix signal is a signal generated based on the Z data signals and cyclic prefix time, a frequency occupied by the first signal is within a frequency range of the frequency domain resources corresponding to the K subcarriers, and a frequency occupied by each of Z data signals obtained through linear frequency modulation changes linearly with time, and wherein:
- a zth data signal in the Z data signals corresponds to Mz time segments, and slopes of linear changes of the Mz time segments are the same;
- when Mz>1, a start frequency of an Mzth time segment is a lowest frequency in the frequency range, and an end frequency of an (Mz−1)th time segment is a highest frequency in the frequency range;
- or
- when Mz>1, a start frequency of an Mzth time segment is a highest frequency in the frequency range, and an end frequency of an (Mz−1)th segment is a lowest frequency in the frequency range;
- and
- each of K, Mz, and Z is an integer greater than or equal to 1, and z ranges from 1 to Z.
4 more elements
A method for transmitting signals, comprising:
- obtaining, by a receive end, a first signal on K subcarriers, wherein the first signal comprises a cyclic prefix signal, the cyclic prefix signal is a signal generated based on Z data signals and cyclic prefix time, a frequency occupied by the first signal is within a frequency range of frequency domain resources corresponding to the K subcarriers, and each of K and Z is an integer greater than or equal to 1;
- and
- demodulating, by the receive end, the first signal by using the frequency range of the frequency domain resources corresponding to the K subcarriers as a sampling rate to obtain a data signal.
A communication apparatus, comprising:
- at least one processor, and one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to:
- perform linear frequency modulation on Z data signals within frequency domain resources corresponding to K subcarriers, to obtain a first signal, wherein the first signal comprises a cyclic prefix signal, the cyclic prefix signal is a signal generated based on the Z data signals and cyclic prefix time, a frequency occupied by the first signal is within a frequency range of the frequency domain resources corresponding to the K subcarriers, and a frequency occupied by each of Z data signals obtained through linear frequency modulation changes linearly with time, and wherein:
- a zth data signal in the Z data signals corresponds to Mz time segments, and slopes of linear changes of the Mz time segments are the same;
- when Mz>1, a start frequency of an Mzth time segment is a lowest frequency in the frequency range, and an end frequency of an (Mz−1)th time segment is a highest frequency in the frequency range;
- or
- when Mz>1, a start frequency of an Mzth time segment is a highest frequency in the frequency range, and an end frequency of an (Mz−1)th segment is a lowest frequency in the frequency range;
- and
- each of K, Mz, and Z is an integer greater than or equal to 1, and z ranges from 1 to Z.
5 more elements
A communication apparatus, comprising:
- at least one processor, and one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to:
- obtain a first signal on K subcarriers, wherein the first signal comprises a cyclic prefix signal, the cyclic prefix signal is a signal generated based on Z data signals and cyclic prefix time, a frequency occupied by the first signal is within a frequency range of frequency domain resources corresponding to the K subcarriers, and each of K and Z is an integer greater than or equal to 1;
- and
- demodulate the first signal by using the frequency range of the frequency domain resources corresponding to the K subcarriers as a sampling rate to obtain a data signal.
1 more element
Dependencies are inferred from the claim text.