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CN-122001415-A - Signal transmission method, communication device, storage medium, and program product

CN122001415ACN 122001415 ACN122001415 ACN 122001415ACN-122001415-A

Abstract

The application provides a signal transmission method, a communication device, a storage medium and a program product, wherein the method comprises the steps of receiving first configuration information, wherein the first configuration information is used for configuring the relation between the bandwidth of a first signal and the bandwidth of a second signal, the bandwidth of the first signal is larger than the bandwidth of the second signal, and the first signal is generated by the first communication device through transformation precoding; and transmitting a second signal based on the first configuration information. The equivalent amount of data is transmitted using less bandwidth, which helps to improve spectral efficiency. In addition, the first signal is generated through transformation precoding, which is beneficial to guaranteeing the coverage of the signal.

Inventors

  • PENG ZHONGCHONG
  • YUAN SHITONG
  • LIU FENGWEI

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260508
Application Date
20241104

Claims (20)

  1. 1. A signal transmission method for use with a first communication device, the method comprising: Receiving first configuration information, wherein the first configuration information is used for configuring the relation between the bandwidth of a first signal and the bandwidth of a second signal, the bandwidth of the first signal is larger than the bandwidth of the second signal, and the first signal is generated by the first communication device through transformation precoding; and transmitting the second signal based on the first configuration information.
  2. 2. The method of claim 1, wherein the relationship of the bandwidth of the first signal and the bandwidth of the second signal comprises any one of: The method comprises the steps of filtering a bandwidth of a signal to be filtered, comparing the bandwidth of the signal to the bandwidth of the first signal, comparing the bandwidth of the signal to be filtered to the bandwidth of the first signal, comparing the bandwidth of the signal to the bandwidth of the first signal, or comparing the bandwidth of the signal to be filtered to the bandwidth of the second signal, wherein the filtered signal is a signal except the second signal in the first signal.
  3. 3. The method of claim 1 or 2, wherein the first configuration information is further used to configure at least one of a scheduling bandwidth, a transmission bandwidth, a modulation and coding scheme MCS, a filter type, or a filter tap coefficient.
  4. 4. The method of claim 3, wherein the scheduling bandwidth is a bandwidth allocated for the first communication device and the transmission bandwidth is a bandwidth used when transmitting the second signal.
  5. 5. The method of claim 3 or 4, wherein the scheduling bandwidth and the transmission bandwidth are characterized by a number of physical resource blocks, PRBs, or a transport block size, TBS.
  6. 6. The method of any one of claims 3 to 5, wherein the MCS is based on an MCS index indication, the MCS index being one of a first correspondence, the first correspondence being used to indicate a correspondence of a plurality of MCS indexes, a plurality of code rates, and a plurality of spectrum efficiencies in a pi/2-binary phase shift keying BPSK modulation scheme, wherein the plurality of code rates include at least one of a code rate corresponding to the first signal and a code rate corresponding to the second signal, and the plurality of spectrum efficiencies include at least one of a spectrum efficiency corresponding to the first signal and a spectrum efficiency corresponding to the second signal.
  7. 7. The method of claim 6, wherein the method further comprises: First indication information is received, wherein the first indication information is used for indicating the first communication device to determine the MCS based on the first corresponding relation.
  8. 8. The method of any of claims 3 to 7, wherein the filter type and filter tap coefficients are based on a filter index indication, the filter index being one of a second correspondence indicating a correspondence of at least one filter index, at least one filter type, and at least one filter tap coefficient.
  9. 9. The method of any one of claims 1 to 8, wherein the method further comprises: And transmitting capability information indicating at least one of first information indicating a relationship between a bandwidth of the first signal supported by the first communication device and a bandwidth of the second signal, a supported maximum scheduling bandwidth, a supported maximum transmission bandwidth, a supported spectral efficiency interval, or a supported filter frequency range.
  10. 10. The method of any one of claims 1 to 9, wherein the method further comprises: and receiving fourth indication information, wherein the fourth indication information is used for indicating the first communication device to transmit signals in a first transmission mode, and the first transmission mode is a mode that the bandwidth of the second signal is smaller than that of the first signal.
  11. 11. A signal transmission method for use with a second communication device, the method comprising: Transmitting first configuration information, wherein the first configuration information is used for configuring the relation between the bandwidth of a first signal and the bandwidth of a second signal, the bandwidth of the first signal is larger than the bandwidth of the second signal, and the first signal is generated by a first communication device through transformation precoding; And receiving a second signal based on the first configuration information.
  12. 12. The method of claim 11, wherein the relationship of the bandwidth of the first signal and the bandwidth of the second signal comprises any one of: The method comprises the steps of filtering a bandwidth of a signal to be filtered, comparing the bandwidth of the signal to the bandwidth of the first signal, comparing the bandwidth of the signal to be filtered to the bandwidth of the first signal, comparing the bandwidth of the signal to the bandwidth of the first signal, or comparing the bandwidth of the signal to be filtered to the bandwidth of the second signal, wherein the filtered signal is a signal except the second signal in the first signal.
  13. 13. The method of claim 11 or 12, wherein the first configuration information is further used to configure at least one of a scheduling bandwidth, a transmission bandwidth, a modulation and coding scheme MCS, a filter type, or a filter tap coefficient.
  14. 14. The method of claim 13, wherein the scheduling bandwidth is a bandwidth allocated for the first communication device, and wherein the transmission bandwidth is a bandwidth used when transmitting the second signal.
  15. 15. The method of claim 13 or 14, wherein the scheduling bandwidth and the transmission bandwidth are characterized by a number of physical resource blocks, PRBs, or a transport block size, TBS.
  16. 16. The method of any one of claims 13 to 15, wherein the MCS is based on an MCS index indication, the MCS index being one of a first correspondence, the first correspondence being used to indicate a correspondence of a plurality of MCS indexes, a plurality of code rates, and a plurality of spectrum efficiencies in a pi/2-binary phase shift keying BPSK modulation scheme, wherein the plurality of code rates include at least one of a code rate corresponding to the first signal and a code rate corresponding to the second signal, and the plurality of spectrum efficiencies include at least one of a spectrum efficiency corresponding to the first signal and a spectrum efficiency corresponding to the second signal.
  17. 17. The method of claim 16, wherein the method further comprises: and sending first indication information, wherein the first indication information is used for indicating the first communication device to determine the MCS based on the first correspondence.
  18. 18. The method of any of claims 13 to 17, wherein the filter type and filter tap coefficients are indicated based on a filter index, the filter index being one of a second correspondence indicating a correspondence of at least one filter index, at least one filter type, and at least one filter tap coefficient.
  19. 19. The method of any one of claims 11 to 18, wherein the method further comprises: Capability information is received indicating at least one of first information indicating a relationship between a bandwidth of the first signal supported by the first communication device and a bandwidth of the second signal, a supported maximum scheduling bandwidth, a supported spectral efficiency interval, or a supported filter frequency range.
  20. 20. The method of any one of claims 11 to 19, wherein the method further comprises: And transmitting fourth indication information, wherein the fourth indication information is used for indicating the first communication device to transmit signals in a first transmission mode, and the first transmission mode is a mode that the bandwidth of the second signal is smaller than that of the first signal.

Description

Signal transmission method, communication device, storage medium, and program product Technical Field Embodiments of the present application relate to the field of communications, and in particular, to a signal transmission method, a communication device, a storage medium, and a program product in the field of communications. Background Orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) is a multi-carrier modulation technique that is widely used in wireless communication systems. Carrying the signal with the OFDM waveform can improve the spectrum utilization, but the OFDM waveform has a higher peak-to-average power ratio (PAPR), resulting in more output back-off power of the Power Amplifier (PA), and thus lower transmit power, and thus smaller coverage. Whereas the orthogonal frequency division multiplexing (discrete fourier transform spreading OFDM, DFT-s-OFDM) waveform of the discrete fourier transform spread has a lower PAPR than the OFDM waveform by performing transform precoding (transform precoding) before subcarrier mapping of data, and thus can improve signal coverage. Based on the transform precoding, if a medium-low order modulation scheme, such as Binary PHASE SHIFT KEYING (BPSK) modulation, quadrature PHASE SHIFT KEYING (QPSK) modulation, or 16 quadrature amplitude modulation (16-quadrature amplitude modulation, 16-QAM) is used, the frequency spectrum efficiency may be low because the number of data bits represented by each symbol is small. Disclosure of Invention The application provides a signal transmission method, a communication device, a storage medium and a program product, which are used for improving the frequency spectrum efficiency on the basis of ensuring the coverage area. In a first aspect, the present application provides a signal transmission method, which may be performed by a first communication device. The first communication device may be a terminal device, or may be a circuit or a chip (such as a modem (modem) chip, also called a baseband (baseband) chip, or a system on chip (SoC) chip or a system in package (SYSTEMIN PACKAGE, SIP) chip that includes a modem core) and is applicable to the terminal device. The method comprises the steps of receiving first configuration information, wherein the first configuration information is used for configuring the relation between the bandwidth of a first signal and the bandwidth of a second signal, the bandwidth of the first signal is larger than the bandwidth of the second signal, the first signal is generated by a first communication device through transformation precoding, and the second signal is sent based on the first configuration information. It is understood that the second signal is included in the first signal, or the second signal is a part of the first signal. In the above signal transmission method, the first communication device may transmit a part of the generated first signal (i.e., the second signal) based on the relation between the configured bandwidth of the first signal and the bandwidth of the second signal, so that the second communication device recovers the first signal based on the second signal, that is, uses less bandwidth to transmit the equivalent data amount, which helps to improve the spectral efficiency. In addition, the first signal is generated through transformation precoding, which is beneficial to guaranteeing the coverage area of the signal, so that the signal transmission method is beneficial to improving the frequency spectrum efficiency while guaranteeing the coverage area. With reference to the first aspect, in some embodiments of the first aspect, the relationship between the bandwidth of the first signal and the bandwidth of the second signal includes any one of a ratio of the bandwidth of the filtered signal to the bandwidth of the first signal, a ratio of the bandwidth of the second signal to the bandwidth of the first signal, a ratio of half of the bandwidth of the filtered signal to the bandwidth of the first signal, a ratio of half of the bandwidth of the second signal to the bandwidth of the first signal, or a difference between the bandwidth of the first signal and the bandwidth of the second signal, wherein the filtered signal is a signal other than the second signal in the first signal. That is, the first configuration information may indicate (or configure) a relationship between the bandwidth of the first signal and the bandwidth of the second signal based on any one of the above items, so that the first communication device filters, based on the first configuration information, a part of signals in the first signal to obtain and send the second signal, so that an equivalent amount of data is transmitted using less bandwidth, which helps to improve the spectrum efficiency. In addition, a configuration mode of various relations between the bandwidths of the first signals and the bandwidths of the second signals is provided, and the configu