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CN-122001539-A - Communication method and device

CN122001539ACN 122001539 ACN122001539 ACN 122001539ACN-122001539-A

Abstract

The application provides a communication method and a communication device, and the method can be applied to support an IEEE protocol, such as an 802.11be/Wi-Fi 7/Wi-Fi 8 protocol, an IEEE 802.11Integrated mmWave protocol, an IEEE 802.11 bf/sensing protocol, an UWB protocol or a star flash protocol. The method may be applied to a scenario in which an ELR PPDU is transmitted. The method comprises the steps of generating a first PPDU, wherein a first sequence carried in the first PPDU is used for indicating the BSS color of the first PPDU and the transmission direction of the first PPDU, and sending the first PPDU, so that a receiving end can determine whether to discard the first PPDU or continuously analyze the first PPDU according to the BSS color of the first PPDU and the transmission direction of the first PPDU by detecting the first sequence in the first PPDU, and power consumption can be saved.

Inventors

  • GONG BO
  • GAN MING

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260508
Application Date
20241106

Claims (18)

  1. 1. A method of communication, comprising: Generating a first physical layer protocol data unit (PPDU), wherein the first PPDU comprises a first field, and the first field carries a first sequence which is used for indicating a Basic Service Set (BSS) color of the first PPDU and a transmission direction of the first PPDU; And transmitting the first PPDU.
  2. 2. The method of claim 1, wherein the first sequence is any one of a set of sequences, the set of sequences comprising a plurality of second sequences indicating an uplink transmission and one BSS color and a plurality of third sequences indicating a downlink transmission and one BSS color.
  3. 3. The method of claim 2, wherein the elements of the second sequence and the third sequence at the same position are opposite to each other.
  4. 4. A method according to any of claims 1 to 3, wherein the first PPDU further comprises a second field indicating a transmission direction of the first PPDU, the second field being subsequent to the first field.
  5. 5. The method of any of claims 1-4, wherein the first PPDU is an enhanced long range transmission ELRPPDU.
  6. 6. A method of communication, comprising: Receiving a first physical layer protocol data unit (PPDU), wherein the first PPDU comprises a first field, and the first field carries a first sequence which is used for indicating a Basic Service Set (BSS) color of the first PPDU and a transmission direction of the first PPDU; And performing sequence detection on the first sequence in the first PPDU.
  7. 7. The method of claim 6, wherein sequence detecting the first sequence in the first PPDU comprises: And performing sequence detection on the first sequence in the first PPDU based on the target sequence to determine a subsequent processing mode of the first PPDU.
  8. 8. The method of claim 7, wherein the sequence detection is performed on the first sequence in the first PPDU based on a target sequence to determine a subsequent processing manner of the first PPDU, specifically: Correlating the target sequence with the first sequence to obtain a correlation value; If the correlation value is greater than or equal to a threshold value, continuing to process the first PPDU; And if the correlation value is smaller than the threshold value, discarding the first PPDU.
  9. 9. The method of claim 7 or 8, wherein the target sequence is any one of a set of sequences, the set of sequences comprising a plurality of second sequences indicating an uplink transmission and one BSS color and a plurality of third sequences indicating a downlink transmission and one BSS color.
  10. 10. The method of claim 9, wherein elements of the second sequence and the third sequence at the same position are opposite numbers to each other.
  11. 11. The method of any of claims 6 to 10, wherein the first PPDU further comprises a second field indicating a transmission direction of the first PPDU, the second field being subsequent to the first field.
  12. 12. The method of any of claims 6 to 11, wherein the first PPDU is an enhanced long range transmission ELR PPDU.
  13. 13. A communication device comprising means for performing the method of any of claims 1-5 or means for performing the method of any of claims 6-12.
  14. 14. A communication device comprising a processor coupled to a memory for storing a computer program or instructions for executing the computer program or instructions in the memory, causing the communication device to perform the method of any one of claims 1 to 5, or causing the communication device to perform the method of any one of claims 6 to 12.
  15. 15. A computer readable storage medium, characterized in that the computer readable storage medium has stored thereon a computer program or instructions, which when run on a computer, cause the computer to perform the method of any of claims 1 to 12.
  16. 16. A chip system comprising a communication interface for signal transceiving of the chip system and a processor for invoking and running a computer program from memory to cause a communication device on which the chip system is mounted to perform the method of any of claims 1 to 12.
  17. 17. A computer program product, characterized in that the computer program product, when run on a computer, causes the computer to perform the method of any of claims 1 to 12.
  18. 18. A communication system comprising a first communication device for performing the method according to any of claims 1 to 5 and a second communication device for performing the method according to any of claims 6 to 12.

Description

Communication method and device Technical Field The present application relates to the field of communications, and in particular, to a communication method and apparatus. Background Wireless local area networks (wireless local area network, WLANs) have evolved over many generations to date, including standards such as 802.11a/b/g, 802.11n, 802.11ac, 802.11ax, 802.11be, 802.11bn, etc., below 7GHz, and also including high frequency standards (45 GHz and beyond) such as 802.11ad, 802.11ay standards operating around 60GHz, and integrated millimeter wave (INTEGRATED MILLIMETER WAVE) standards that may be formed later. Among them, the 802.11n standard is called High Throughput (HT), the 802.11ac standard is called very high throughput (very high throughput, VHT), the 802.11ax standard is called high efficiency (HIGH EFFICIENT, HE), the 802.11be standard is called ultra high throughput (extremely high throughput, EHT), the 802.11bn standard is called ultra high reliability (ultra high reliability, UHR), the 802.11ad standard is called directional multi-gigabit (directional multi-gigabit, DMG), and the 802.11ay is called enhanced directional multi-gigabit (enhanced directional multigigabit, EDMG). In general, in many regulations, an Access Point (AP) may be allowed to transmit more power or higher power spectral density than a non-AP Station (STA), and thus the coverage of the AP is wider than the STA. For example, the federal communications commission in the united states promulgates regulations for the 6GHz spectrum, defining a low power in-house (LPI) mode of communication, imposing strict limits on the maximum power and maximum frequency spectral density transmitted. For an Access Point (AP), the maximum power it is limited to transmit is 36dBm and the maximum power spectral density is 5dBm/MHz (decibel-milliwatts/megahertz). For Stations (STAs), the maximum power it is limited to transmit is 24dBm, and the maximum power spectral density is-1 dBm/MHz. A relatively intuitive problem arises because the coverage of an AP is broader than that of an STA, which may be able to receive the weak signal of the AP but not transmit with the AP (because the uplink transmission range of the station is not covered enough). To this end, the 802.11bn standard proposes enhanced long range transmission (enhanced long range, ELR) physical layer protocol data units (PHYSICAL LAYER protocol data unit, PPDUs), which are used for long range transmission. The ELR-PPDU may include four parts of a legacy preamble (L-preamble), a high reliability preamble (ultra high reliability, UHR-preamble), a long range transmission preamble (enhanced long range-preamble), ELR-data, etc. Currently, the frame format design of ELR PPDUs is also under study. In designing the frame format of the ELR PPDU, consideration needs to be given to how to reduce the power consumption of the receiving end to parse the ELR PPDU. Disclosure of Invention The embodiment of the application provides a communication method and a communication device, which can reduce the power consumption of a PPDU received by a receiving end in analysis. In a first aspect, an embodiment of the present application provides a communication method applied to a first communication device, where the method is implemented by the first communication device or a component on the side of the first communication device (for example, a chip or a processing system or a functional module in the first communication device), and the following description will be given by taking the embodiment of the first communication device as an example. The method includes the first communication device generating a first physical layer protocol data unit (PHYSICAL LAYER protocol data unit, PPDU), the first PPDU including a first field, the first field carrying a first sequence for indicating a Basic Service Set (BSS) color (color) of the first PPDU and a transmission direction of the first PPDU, or determining the BSS color of the first PPDU and the transmission direction of the first PPDU, and transmitting the first PPDU. The first sequence for indicating the BSS color of the first PPDU and the transmission direction of the first PPDU may be described as the first sequence for indicating the transmission direction of the first PPDU and the BSS color to which the transmitting end of the first PPDU belongs (associated), may be described as the first sequence for indicating the transmission direction of the first PPDU and the BSS color to which the destination receiving end of the first PPDU belongs (associated), and may be further described as the first sequence for identifying the BSS color and indicating the transmission direction of the first PPDU. The destination receiving terminal may be simply referred to as a destination terminal. The destination receiving end of a PPDU may refer to a receiving end that desires to receive and parse the PPDU. Optionally, the first PPDU contains an address of the destination