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CN-122002565-A - Communication method and communication device

CN122002565ACN 122002565 ACN122002565 ACN 122002565ACN-122002565-A

Abstract

The present application relates to the field of wireless communications technologies, and in particular, to a communication method and a communication device. The first station sends the long training field according to the long training sequence, and the second station receives the long training field and carries out channel estimation based on the long training field and the long training sequence. The long training sequence satisfies that the sum of elements of the difference sequence corresponding to any DRU is less than or equal to 5, so that LTF transmitted based on any DRU has lower PAPR. The application can support IEEE protocols such as IEEE802.11be/Wi-Fi 7/EHT protocol, IEEE802.11 bn/UHR/Wi-Fi 8 protocol, IEEE 802.15/UWB protocol, IEEE802.11 bf/sensing protocol, millimeter wave MMW protocol and the like. The application can also support star flash/SPARK LINK/nearlink standard protocol.

Inventors

  • GONG BO
  • GAN MING

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260508
Application Date
20241108

Claims (20)

  1. 1. A method of communication, comprising: determining a long training sequence, the long training sequence satisfying: y i is the ratio of the sequence value corresponding to the ith subcarrier in the subcarriers with index less than 0 in the 106-tone DRU to the sequence value corresponding to the ith subcarrier in the subcarriers with index greater than 0 in the 106-tone DRU; and transmitting a long training field, wherein the long training field is determined according to the long training sequence.
  2. 2. The method of claim 1, wherein the long training sequence further satisfies: x i is the ratio of the sequence value corresponding to the ith subcarrier in the subcarriers with index less than 0 in the 52-tone DRU to the sequence value corresponding to the ith subcarrier in the subcarriers with index greater than 0 in the 52-tone DRU.
  3. 3. The method according to claim 1 or 2, characterized in that the long training sequence further satisfies: z i is the ratio of the sequence value corresponding to the ith subcarrier in the subcarriers with index less than 0 in the 26-tone DRU to the sequence value corresponding to the ith subcarrier in the subcarriers with index greater than 0 in the 26-tone DRU.
  4. 4. A method according to any of claims 1-3, wherein the 106-tone DRU has a subcarrier range of [ -120:9: -12,6:9:114, -116:9: -8,10:9:118, -118:9: -10,8:9:116, -114:9: -6,12:9:120, -3,3];, or The subcarrier range of the 106-tone DRU is [ -119:9: -11,7:9:115, -115:9: -7,11:9:119, -117:9: -9,9:9:117, -113:9: -5,4:9:112, -2,2].
  5. 5. The method of claim 2, wherein the subcarrier range of the 52-tone DRU is [ -120:9: -12,6:9:114, -116:9: -8,10:9:118] The subcarrier range of the 52-tone DRU is [ -118:9: -10,8:9:116, -114:9: -6,12:9:120] The subcarrier range of the 52-tone DRU is [ -119:9: -11,7:9:115, -115:9: -7,11:9:119] The subcarrier range of the 52-tone DRU is [ -117:9: -9,9:9:117, -113:9: -5,4:9:112].
  6. 6. The method according to any one of claims 1-5, wherein the long training sequence is: [0 0 0 0 0 0 0 0-1-1 1 1-1-1 1 1-1 1 1-1 1-1 1-1-1 1 1 1 1 1-1-1 1 1-1 1-1 1-1-1 1 1-1 1 1-1-1-1 11 1-1-1-1-1-1 1 1-1 1 1-1 1-1-1 1-1 1 1 1-1-1 1-1 1 1-1 1 1 1-1-1-1 1-1-1-1-1 1-1 1-1 1-1-1 1-1-1 1 1 1 1-1 1-1 1 1-1 1-1-1-1 1 1 1 1-1 1 1-1-1 1-1-1-1-1-1 0 0 0 1-1 1 1 1-1-1-1-1 1-1 1 1-1 1-1 1-1 1 -1-1-1-1 1-1 1 1 1 1 1-1-1-1-1-1 1 1 1 1-1 1 1 1 1-1 1-1-1-1 1 1-1 1 1-1 1-1 1-1-1 1 1-1-1 1-1-1 1-1 1 1 1 1 1-1 1-1-1-1-1-1 1 1-1 1-1 1-1 1 1 1-1-1-1 1-1 1-1-1-1-1-1-1-1 1 1 1-1 1 1-1-1-1-1 1-1 1 11 0 0 0 0 0 0 0].
  7. 7. a method of communication, comprising: Receiving a long training field; and carrying out channel estimation according to the long training field and the long training sequence, wherein the long training sequence meets the following conditions: y i is the ratio of the sequence value corresponding to the ith subcarrier in the subcarriers with index less than 0 in the 106-tone DRU to the sequence value corresponding to the ith subcarrier in the subcarriers with index greater than 0 in the 106-tone DRU.
  8. 8. The method of claim 7, wherein the long training sequence further satisfies: x i is the ratio of the sequence value corresponding to the ith subcarrier in the subcarriers with index less than 0 in the 52-tone DRU to the sequence value corresponding to the ith subcarrier in the subcarriers with index greater than 0 in the 52-tone DRU.
  9. 9. The method according to claim 7 or 8, wherein the long training sequence further satisfies: z i is the ratio of the sequence value corresponding to the ith subcarrier in the subcarriers with index less than 0 in the 26-tone DRU to the sequence value corresponding to the ith subcarrier in the subcarriers with index greater than 0 in the 26-tone DRU.
  10. 10. The method of any of claims 7-9, wherein the 106-tone DRU has a subcarrier range of [ -120:9: -12,6:9:114, -116:9: -8,10:9:118, -118:9: -10,8:9:116, -114:9: -6,12:9:120, -3,3];, or The subcarrier range of the 106-tone DRU is [ -119:9: -11,7:9:115, -115:9: -7,11:9:119, -117:9: -9,9:9:117, -113:9: -5,4:9:112, -2,2].
  11. 11. The method of claim 8, wherein the subcarrier range of the 52-tone DRU is [ -120:9: -12,6:9:114, -116:9: -8,10:9:118] The subcarrier range of the 52-tone DRU is [ -118:9: -10,8:9:116, -114:9: -6,12:9:120] The subcarrier range of the 52-tone DRU is [ -119:9: -11,7:9:115, -115:9: -7,11:9:119] The subcarrier range of the 52-tone DRU is [ -117:9: -9,9:9:117, -113:9: -5,4:9:112].
  12. 12. The method according to any of claims 7-11, wherein the long training sequence is: [0 0 0 0 0 0 0 0-1-1 1 1-1-1 1 1-1 1 1-1 1-1 1-1-1 1 1 1 1 1-1-1 1 1-1 1-1 1-1-1 1 1-1 1 1-1-1-1 11 1-1-1-1-1-1 1 1-1 1 1-1 1-1-1 1-1 1 1 1-1-1 1-1 1 1-1 1 1 1-1-1-1 1-1-1-1-1 1-1 1-1 1-1-1 1-1-1 1 1 1 1-1 1-1 1 1-1 1-1-1-1 1 1 1 1-1 1 1-1-1 1-1-1-1-1-1 0 0 0 1-1 1 1 1-1-1-1-1 1-1 1 1-1 1-1 1-1 1 -1-1-1-1 1-1 1 1 1 1 1-1-1-1-1-1 1 1 1 1-1 1 1 1 1-1 1-1-1-1 1 1-1 1 1-1 1-1 1-1-1 1 1-1-1 1-1-1 1-1 1 1 1 1 1-1 1-1-1-1-1-1 1 1-1 1-1 1-1 1 1 1-1-1-1 1-1 1-1-1-1-1-1-1-1 1 1 1-1 1 1-1-1-1-1 1-1 1 11 0 0 0 0 0 0 0].
  13. 13. a method of communication, comprising: Determining a long training sequence, wherein the long training sequence is ：[0 0 0 0 0 0 0 0-1-1 1 1-1-1 1 1-1 1 1-1 1-1 1-1-1 1 1 1 1 1-1-1 1 1-1 1-1 1-1-1 1 1-1 1 1-1-1-1 1 1 1-1-1-1-1-1 1 1-1 1 1-1 1-1-1 1-1 1 1 1-1-1 1-1 1 1-1 1 1 1-1-1-1 1-1-1-1-1 1-1 1-1 1-1-1 1-1-1 1 1 1 1-1 1-1 1 1-1 1-1-1-1 1 1 1 1-1 1 1-1-1 1-1-1-1-1-1 0 0 0 1-1 1 1 1-1-1-1-1 1-1 1 1-1 1-1 1-1 1-1-1-1-1 1-1 1 1 1 1 1-1-1-1-1-1 1 1 1 1-1 1 1 1 1-1 1-1-1-1 1 1-1 1 1-1 1-1 1-1-1 1 1-1-1 1-1-1 1-1 1 1 1 1 1-1 1-1-1-1-1-1 1 1-1 1-1 1-1 1 1 1-1-1-1 1-1 1-1-1-1-1-1-1-1 1 1 1-1 1 1-1-1-1-1 1-1 1 1 1 0 0 0 0 0 0 0]; And transmitting a long training field, wherein the long training field is determined according to the long training sequence.
  14. 14. A method of communication, comprising: Receiving a long training field; Performing channel estimation according to the long training field and the long training sequence, wherein the long training sequence is that ：[0 0 0 0 0 0 0 0-1-1 1 1-1-1 11-1 1 1-1 1-1 1-1-1 1 1 1 1 1-1-1 1 1-1 1-1 1-1-1 1 1-1 1 1-1-1-1 1 1 1-1-1-1-1-1 1 1-1 1 1-1 1-1-1 1-1 1 1 1-1-1 1-1 1 1-1 1 1 1-1-1-1 1-1-1-1-1 1-1 1-1 1-1-1 1-1-1 1 1 1 1-1 1-1 1 1-1 1-1-1-1 1 1 11-1 1 1-1-1 1-1-1-1-1-1 0 0 0 1-1 1 1 1-1-1-1-1 1-1 1 1-1 1-1 1-1 1-1-1-1-1 1-1 1 1 1 1 1-1-1-1-1-1 1 1 1 1-1 1 1 1 1-1 1-1-1-1 1 1-1 1 1-1 1-1 1-1-1 1 1-1-1 1-1-1 1-1 1 1 1 1 1-1 1-1-1-1-1-1 1 1-1 1-1 1-1 1 1 1-1-1-1 1-1 1-1-1-1-1-1-1-1 1 1 1-1 1 1-1-1-1-1 1-1 1 1 1 0 0 0 0 0 0 0].
  15. 15. A communication device comprising means for performing the method of any of claims 1-14.
  16. 16. A communication device comprising at least one processor configured to cause the communication device to implement the method of any one of claims 1-14.
  17. 17. A chip comprising logic circuitry and an interface, the logic circuitry and the interface being coupled, the logic circuitry to cause the chip to implement the method of any of claims 1-14.
  18. 18. A computer readable storage medium for storing a computer program which, when executed by a computer, is adapted to carry out the method of any one of claims 1 to 14.
  19. 19. A computer program product, characterized in that the computer program product, when executed by a computer, is adapted to carry out the method according to any one of claims 1-14.
  20. 20. A communication system comprising a first station for performing the method of any of claims 1-6 and a second station for performing the method of any of claims 7-12, or the first station for performing the method of claim 13 and the second station for performing the method of claim 14.

Description

Communication method and communication device Technical Field The present application relates to the field of communications technologies, and in particular, to a communication method and a communication device. Background The European telecommunication standards institute (european telecommunications standards institute, ETSI) promulgates regulations on the 6GHz spectrum, which limits the maximum power transmitted to 23dBm (decibel-milliwatts, decibel-mW) and the maximum power spectral density to 10dBm/MHz (decibel-milliwatts/megahertz). The federal communications commission also promulgates regulations for the 6GHz spectrum, defining a low power in-house (LPI) mode of communication, imposing severe restrictions on the maximum power and maximum frequency spectral density transmitted. For an Access Point (AP), the maximum power it limits to transmitting is 30dBm and the maximum power spectral density is 5dBm/MHz. For Stations (STAs), the maximum power that it limits to transmitting is 24dBm, and the maximum power spectral density is-1 dBm/MHz. The transmit power of the device is limited by both the maximum power and the maximum power spectral density, i.e., the transmit power cannot exceed the maximum power value, and the transmit power spectral density (power SPECTRAL DENSITY, PSD) cannot exceed the maximum power spectral density. The maximum power spectral density is more severely limited than the maximum power, and the maximum power allowed to be transmitted is typically more limited by the power spectral density. For a station, when the bandwidth is 320MHz, the transmit power of the station reaches the limit of the specified maximum power. At bandwidths less than 320MHz, the station can only transmit with lower power (here, lower than the specified maximum power) because of the limitation of the maximum power spectral density. As a result of the limited power spectral density, distributed resource unit (distributed resource unit, DRU) techniques are proposed to boost the transmit power. The basic idea of DRU is to scatter continuous subcarriers in one Resource Unit (RU) to a wider bandwidth, so as to reduce the number of subcarriers existing in 1MHz, thereby implementing an increase in the transmission power of each subcarrier, and further increasing the total transmission power. A long training field (long TRAINING FIELD, LTF) is used for channel estimation. The LTF sequences are designed for each bandwidth to indicate the values carried on each subcarrier during LTF transmission. When transmitting a data (data) field based on a DRU, a station transmits an LTF based on the DRU. However, the current LTF sequence is designed for a sub-carrier contiguous RU (referred to as a regular RU), and using the LTF sequence designed for the regular RU for DRUs may result in a peak-to-average power ratio (peak to average power ratio, PAPR) of LTFs based on DRU transmission being too high. Disclosure of Invention The embodiment of the application provides a communication method and a communication device, which can reduce the PAPR of LTF based on DRU transmission. In a first aspect, an embodiment of the present application provides a communication method, where the method may be applied to a first site, or a chip or a functional module in the first site, etc. The first station may include a WLAN device such as an IoT device or the like. The method comprises the following steps: Determining a long training sequence, wherein the long training sequence meets the following conditions: And the yi is the ratio of the sequence value corresponding to the ith subcarrier in the subcarriers with the indexes smaller than 0 in the 106-tone DRU to the sequence value corresponding to the ith subcarrier in the subcarriers with the indexes larger than 0 in the 106-tone DRU, and the long training field is sent and is determined according to the long training sequence. The ith subcarrier of the subcarriers with index less than 0 in the 106-tone DRU and the ith subcarrier of the subcarriers with index greater than 0 in the 106-tone DRU are regarded as a subcarrier pair. For a subcarrier pair, when the sequence values corresponding to two contained subcarriers are the same, the energy of the time domain waveform of the subcarrier pair is mainly concentrated on the even number of sample points. When the sequence values corresponding to the two subcarriers included in the subcarrier pair are opposite, the energy of the time domain waveform of the subcarrier pair is mainly concentrated on the odd-numbered sampling points. Therefore, in the 106-tone DRU, the smaller the number difference between the subcarrier pairs with the same sequence value corresponding to the two subcarriers and the subcarrier pairs with opposite sequence values corresponding to the two subcarriers is, the closer the energy carried on the odd-numbered sampling points and the energy carried on the even-numbered sampling points are in the time domain waveform of the 106