Search

KR-102961934-B1 - Method and device, device, and media for space reuse

KR102961934B1KR 102961934 B1KR102961934 B1KR 102961934B1KR-102961934-B1

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
20260508
Application Date
20220225
Priority Date
20210401

Claims (20)

  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 subbands having the same bandwidth - ; and A step of determining a reference transmit power for transmitting a Parameterized Spatial Reuse Transmission (PSRT) PPDU on a second frequency band based on the value of a spatial reuse parameter (SRP) at the particle size of the bandwidth and the received power level (RPL) of the PSRR PPDU at the particle size of the bandwidth by the first spatial reuse device. Includes, A method wherein the second frequency band comprises one or more subbands having the bandwidth, and the second frequency band and the first frequency band overlap at least partially on an overlapping subband between the second frequency band and one or more subbands within the first frequency band that are occupied by part or all of the PSRR PPDU received by the first space reuse device.
  2. As a method of space reuse, A method comprising the step of receiving a parameterized spatial reuse transmission (PSRT) physical layer protocol data unit (PPDU) on a second frequency band from a first spatial reuse device by a communication device, wherein the second frequency band comprises one or more subbands having the same bandwidth; wherein the reference transmission power of the PSRT PPDU is determined based on the value of a spatial reuse parameter (SRP) at the granularity of the bandwidth and the reception power level (RPL) of a parameterized spatial reuse reception (PSRR) PPDU at the granularity of the bandwidth; wherein the PSRR PPDU is received by the first spatial reuse device on a first frequency band, wherein the first frequency band comprises one or more subbands having the same bandwidth, and the second frequency band and the first frequency band overlap at least partially on an overlapping subband between the second frequency band and one or more subbands within the first frequency band that are occupied by part or all of the PSRR PPDU received by the first spatial reuse device.
  3. A method according to claim 1 or 2, wherein the RPL in the particle size of the bandwidth is determined based on the overlapping subband.
  4. In claim 1 or 2, the RPL at the particle size of the bandwidth is: Bandwidth of an unpunctured subband in one or more subbands within the first frequency band occupied by part or all of the PSRR PPDU received by the first space reuse device; or A method determined based on one of the bandwidths of the unpunctured subbands in the above-mentioned overlapping subbands.
  5. A method according to claim 1 or 2, wherein the reference transmission power is further determined based on the bandwidth of an unpunctured subband in the second frequency band.
  6. A method according to claim 1 or 2, wherein the reference transmission power is further determined based on the bandwidth of an unpunctured subband in an overlapping subband between the one or more subbands in the first frequency band and the second frequency band, which is occupied by part or all of the PSRR PPDU received by the first space reuse device.
  7. 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 A method further comprising the step of determining an unpunctured subband in the first frequency band based on at least one of puncturing instruction information included in a management frame of a basic service set (BSS) where the second space 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.
  8. In claim 1, the first space reuse device determines to puncture the 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.
  9. A method according to claim 1 or 2, wherein the first frequency band includes a plurality of subbands, and the value of the SRP at the particle size of the bandwidth is the smallest value among the plurality of values of the SRP for the plurality of subbands.
  10. As a method of space reuse, A step of transmitting part or all of a Parameterized Spatial Reuse Reception (PSRR) physical layer protocol data unit (PPDU) on the first frequency band by a second spatial reuse device It includes, wherein the first frequency band includes one or more subbands having the same bandwidth, and the trigger frame carried in the PSRR PPDU includes the value of the spatial reuse parameter (SRP) at the particle size of the bandwidth, The above method is, With respect to the subband to be punctured in the first frequency band by the second space reuse device, the SRP performs the following operations: An operation to adjust the value of the SRP based on a predetermined offset; and An operation to set the value of the SRP to a first value in order to instruct another space-reusing device that the transmission of the PPDU on the subband to be punctured is prohibited; or An operation of setting the value of the SRP to a second value to indicate to another space-reusing device that transmission on the subband to be punctured is allowed. Step of deciding through one of them A method that additionally includes
  11. delete
  12. As a communication device, A receiving module configured to receive 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 subbands having the same bandwidth - ; and A first determination module configured to determine a reference transmit power for transmitting a Parameterized Spatial Reuse Transmission (PSRT) PPDU on a second frequency band, based on the value of a spatial reuse parameter (SRP) at the particle size of the above bandwidth and the received power level (RPL) of the PSRR PPDU at the particle size of the above bandwidth. Includes, A communication device wherein the second frequency band comprises one or more subbands having the bandwidth, and the second frequency band and the first frequency band overlap at least partially on an overlapping subband between the second frequency band and one or more subbands within the first frequency band that are occupied by part or all of the PSRR PPDU received by the receiving module.
  13. As a communication device, A receiving module configured to receive a Parameterized Spatial Reuse Transmission (PSRT) physical layer protocol data unit (PPDU) on a second frequency band from a first spatial reuse device. Includes, A communication device comprising: the second frequency band including one or more subbands having the same bandwidth; the reference transmission power of the PSRT PPDU is determined based on the value of a spatial reuse parameter (SRP) at the grain size of the bandwidth and the reception power level (RPL) of a Parameterized Spatial Reuse Reception (PSRR) PPDU at the grain size of the bandwidth; the PSRR PDDU is received on a first frequency band by the first spatial reuse device, the first frequency band including one or more subbands having the bandwidth, and the second frequency band and the first frequency band overlap at least partially on an overlapping subband between the second frequency band and one or more subbands within the first frequency band that are occupied by part or all of the PSRR PPDU received by the first spatial reuse device.
  14. A communication device according to claim 12 or 13, wherein the RPL in the particle size of the bandwidth is determined based on the overlapping subband.
  15. In paragraph 12 or 13, the RPL at the particle size of the above bandwidth is: Bandwidth of an unpunctured subband in one or more subbands within the first frequency band occupied by part or all of the received PSRR PPDU; or A communication device determined based on one of the bandwidths of the unpunctured subbands in the above-mentioned overlapping subbands.
  16. A communication device according to claim 12 or 13, wherein the reference transmission power is further determined based on the bandwidth of an unpunctured subband in the second frequency band.
  17. A communication device according to claim 12 or 13, wherein the reference transmission power is further determined based on the bandwidth of an unpunctured subband in the overlapping subband between the one or more subbands in the first frequency band and the second frequency band occupied by part or all of the received PSRR PPDU.
  18. In Paragraph 12, 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 replica PPDU - ; or A communication device further comprising a second determination module configured to determine an unpunctured subband in the first frequency band based on at least one of puncturing instruction information included in a management frame of a basic service set (BSS) where the second space 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.
  19. In Paragraph 12, A third decision module configured to decide to puncture the above PSRT PPDU; and A communication device further comprising an adjustment module configured to adjust the reference transmission power based on an offset.
  20. A communication device according to claim 12 or 13, wherein the first frequency band comprises a plurality of subbands, and the value of the SRP in the particle size of the bandwidth is the smallest value among the plurality of values of the SRP for the plurality of subbands.

Description

Method and device, device, and media for space reuse 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 s