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KR-20260068136-A - SPATIAL REUSE METHOD AND APPARATUS, DEVICE, AND MEDIUM

KR20260068136AKR 20260068136 AKR20260068136 AKR 20260068136AKR-20260068136-A

Abstract

A method, apparatus, device, and medium for spatial reuse are provided. In this method, a first spatial reuse device receives part or all of a PSRR PPDU transmitted by a second spatial reuse device on a first frequency band. The first frequency band includes one or more subbands having the same bandwidth. The first spatial reuse device determines a reference transmit power for transmitting a PSRR PPDU on a second frequency band based on the value of a spatial reuse parameter (SRP) at the bandwidth granularity and the received power level (RPL) of the PSRR PPDU at the bandwidth granularity. The second frequency band includes one or more subbands having a bandwidth. The second frequency band and the first frequency band overlap at least partially. The RPL of the PSRR PPDU at the bandwidth granularity is determined based on: one or more subbands within the first frequency band occupied by part or all of the PSRR PPDU received by the first spatial reuse device; or one or more of unpunctured subbands in the first frequency band or the second frequency band. This reduces interference with the reception of space-recycling devices and improves system efficiency.

Inventors

  • 위, 젠
  • 리, 윈보
  • 간, 밍

Assignees

  • 후아웨이 테크놀러지 컴퍼니 리미티드

Dates

Publication Date
20260513
Application Date
20220225
Priority Date
20210401

Claims (18)

  1. As a method of space reuse, A step of receiving, by a first spatial reuse device, part or all of a Parameterized Spatial Reuse Reception (PSRR) physical layer protocol data unit (PPDU) transmitted by a second spatial reuse device on a first frequency band - said first frequency band includes one or more 20 MHz subbands -; and A step of determining a reference transmit power for transmitting a Parameterized Spatial Reuse Transmission (PSRT) PPDU in a second frequency band based on the value of a spatial reuse parameter (SRP) at a granularity of 20 MHz and the received power level (RPL) of the PSRR PPDU at a granularity of 20 MHz by the first spatial reuse device. Includes, The second frequency band includes one or more 20 MHz subbands, and the second frequency band and the first frequency band overlap at least partially, and A method in which the RPL at the above 20 MHz particle size is determined based on the bandwidth of a non-punctured subband in one or more 20 MHz subbands occupied by part or all of the PSRR PPDU received by the first space reuse device within the first frequency band.
  2. In paragraph 1, A method in which the RPL at the above 20 MHz particle size is determined based on the overlapping subband between the one or more 20 MHz subbands and the second frequency band, which are occupied by part or all of the PSRR PPDU received by the first space reuse device within the first frequency band.
  3. In paragraph 1, The above RPL at the above 20 MHz particle size is, A method determined based on the bandwidth of an unpunctured subband in an overlapping subband between one or more 20 MHz subbands and a second frequency band, which is occupied by part or all of the PSRR PPDU received by the first space reuse device within the first frequency band.
  4. In paragraph 1, A method in which the above reference transmission power is further determined based on the bandwidth of an unpunctured subband in the second frequency band.
  5. In paragraph 1, A method in which the above reference transmission power is further determined based on the bandwidth of an unpunctured subband in an overlapping subband between the one or more 20 MHz subbands and the second frequency band, which are occupied by part or all of the PSRR PPDU received by the first space reuse device within the first frequency band.
  6. In paragraph 1, By the above-mentioned first space reuse device, Puncture instruction information included in the preamble of the received PSRR PPDU above; Puncture instruction information included in the above PSRR PPDU - the above PSRR PPDU is a non-high throughput duplicate PPDU - ; or Puncture instruction information included in a management frame of the Basic Service Set (BSS) where the second space reuse device is located - said management frame includes at least one of a beacon frame, an association response frame, a probe response frame, a neighbor report frame, or a reduced neighbor report frame - Step of determining an unpunctured subband in the first frequency band based on at least one of the above. A method that additionally includes
  7. In paragraph 1, The above-mentioned first space reuse device determines to puncture the above-mentioned PSRT PPDU, and the method is, A method further comprising the step of adjusting the reference transmission power based on an offset by the first space reuse device.
  8. A method according to claim 1, wherein the first frequency band includes a plurality of subbands, and the value of the SRP at the 20 MHz particle size is the smallest value among the plurality of values of the SRP for the plurality of subbands.
  9. As a communication device, A receiving module configured to receive part or all of a parameterized space reuse reception (PSRR) physical layer protocol data unit (PPDU) transmitted by a second space reuse device on a first frequency band - said first frequency band includes one or more 20 MHz subbands - ; and A first determination module configured to determine a reference transmit power for transmitting a parameterized spatial reuse transmit (PSRT) PPDU on a second frequency band, based on the value of the spatial reuse parameter (SRP) at a 20 MHz particle size and the receive power level (RPL) of the PSRR PPDU at a 20 MHz particle size. Includes, The second frequency band includes one or more 20 MHz subbands, and the second frequency band and the first frequency band overlap at least partially, and A communication device in which the RPL at the above 20 MHz particle size is determined based on the bandwidth of an unpunctured subband in one or more 20 MHz subbands occupied by part or all of the PSRR PPDU received by the first space reuse device within the first frequency band.
  10. In Paragraph 9, A communication device in which the RPL at the above 20 MHz particle size is determined based on the overlapping subband between the one or more 20 MHz subbands and the second frequency band, which are occupied by part or all of the PSRR PPDU received by the first space reuse device within the first frequency band.
  11. In Paragraph 9, The above RPL at the above 20 MHz particle size is, A communication device determined based on the bandwidth of an unpunctured subband in an overlapping subband between one or more 20 MHz subbands and a second frequency band, which is occupied by part or all of the PSRR PPDU received by the first space reuse device within the first frequency band.
  12. In Paragraph 9, A communication device in which the above reference transmission power is further determined based on the bandwidth of an unpunctured subband in the above second frequency band.
  13. In Paragraph 9, A communication device in which the above reference transmission power is further determined based on the bandwidth of an unpunctured subband in the overlapping subband between the one or more 20 MHz subbands and the second frequency band, which are occupied by part or all of the PSRR PPDU received by the first space reuse device within the first frequency band.
  14. In Paragraph 9, Puncture instruction information included in the preamble of the received PSRR PPDU above; Puncture instruction information included in the above PSRR PPDU - the above PSRR PPDU is a non-high throughput duplicate PPDU - ; or Puncture instruction information included in a management frame of the Basic Service Set (BSS) where the second space reuse device is located - said management frame includes at least one of a beacon frame, an association response frame, a probe response frame, a neighbor report frame, or a reduced neighbor report frame - A second determination module configured to determine an unpunctured subband in the first frequency band based on at least one of the following. A communication device that additionally includes
  15. In Paragraph 9, A third decision module configured to decide to puncture the above PSRT PPDU; and A control module configured to adjust the reference transmission power based on an offset A communication device that additionally includes
  16. In Paragraph 9, A communication device wherein the first frequency band comprises a plurality of subbands, and the value of the SRP at the 20 MHz particle size is the smallest value among the plurality of values of the SRP for the plurality of subbands.
  17. As a communication device, processor A communication device comprising, wherein the processor is coupled to a memory, the memory stores instructions, and when the instructions are executed by the processor, the method according to claim 1 is performed.
  18. A computer-readable storage medium, wherein the computer-readable storage medium stores a program, and when at least a part of the program is executed by a processor in the device, the device is able to perform the method according to claim 1.

Description

SPATIAL REUSE METHOD AND APPARATUS, DEVICE, AND MEDIUM The present disclosure relates to the field of wireless local area networks, and more specifically, to a method, apparatus, and medium for spatial reuse. Wireless Local Area Network (WLAN) standards have been developed over several generations, including 802.11a/b/g, 802.11n, 802.11ac, 802.11ax, and the currently debated 802.11be. The 802.11n standard is referred to as High Throughput (HT), the 802.11ac standard as Very High Throughput (VHT), the 802.11ax standard as High Efficiency (HE), and the 802.11be standard as Extremely High Throughput (EHT). 802.11ax WLAN devices, such as access points and stations, support only half-duplex transmission. In other words, on the same spectrum bandwidth or channel, only one device can transmit information, while other devices can only receive signals and cannot transmit them. This avoids interference with the current transmitting device. However, as the density of WLAN devices increases, it is becoming increasingly common for basic service sets (BSS) to overlap with other BSSs. In other words, overlapping BSSs (OBSS) are becoming more common. When conventional methods are used, transmission efficiency is very low. In this case, 802.11ax proposes a spatial reuse method. Through adaptive adjustment of transmission power, devices within an overlapping basic service set can perform transmissions simultaneously. This improves transmission efficiency. However, the 802.11ax spatial reuse method has drawbacks, such as significant interference between devices and low system efficiency. The present disclosure provides a space reuse solution. A first aspect of the present disclosure provides a spatial reuse method. In this method, a first spatial reuse device receives part or all of a PSRR PPDU transmitted by a second spatial reuse device on a first frequency band. The first frequency band includes one or more subbands having the same bandwidth. The first spatial reuse device determines a reference transmit power for transmitting a PSRT PPDU on a second frequency band based on the value of a spatial reuse parameter (SRP) at the bandwidth granularity and the received power level (RPL) of the PSRR PPDU at the bandwidth granularity. The second frequency band includes one or more subbands having the bandwidth, and the second frequency band and the first frequency band overlap at least partially. The RPL of the PSRR PPDU at the bandwidth granularity is: one or more subbands within the first frequency band occupied by part or all of the PSRR PPDU received by the first spatial reuse device; Or it is determined based on one or more of the unpunctured subbands in the first frequency band or the second frequency band. In some implementations, the reference transmit power is determined over the entire second frequency band. In some implementations, the RPL in the bandwidth granularity is determined based on an overlapping subband between one or more subbands within the first frequency band and the second frequency band, which are occupied by part or all of the PSRR PPDU received by the first space reuse device. In some implementations, the RPL in the bandwidth granularity is determined based on one of: the bandwidth of an unpunctured subband in one or more subbands within a first frequency band occupied by part or all of the PSRR PPDU received by the first space reuse device; or the bandwidth of an unpunctured subband in an overlapping subband between one or more subbands within a first frequency band occupied by part or all of the PSRR PPDU received by the first space reuse device and a second frequency band. In some implementations, the reference transmit power is determined based on: the bandwidth of an unpunctured subband in a second frequency band; or the bandwidth of an unpunctured subband in an overlapping subband between one or more subbands in a first frequency band and a second frequency band that is occupied by part or all of the PSRR PPDU received by the first space reuse device. In some implementations, the first spatial reuse device determines an unpunctured subband in the first frequency band based on at least one of: puncturing instruction information contained in a preamble in a received PSRR PPDU; puncturing instruction information contained in a PSRR PPDU - the PSRR PPDU is a non-high throughput duplicate PPDU -; or puncturing instruction information contained in a management frame of the basic service set (BSS) where the second spatial reuse device is located - the management frame includes at least one of a beacon frame, an association response frame, a probe response frame, a neighbor report frame, or a reduced neighbor report frame -. In some implementations, the first space reuse device determines to puncture the PSRT PPDU. The first space reuse device adjusts the reference transmit power based on a predetermined offset. In some implementations, the value of SRP in the bandwidth grain size is adjusted by a second