WO2022127505A1 - 一种协议数据单元ppdu的传输方法和装置 - Google Patents
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Definitions
- the working channel of the SST site does not include the main 20MHz channel, and the channel occupied by the transmission of the CTS should include the main 20MHz channel. That is to say, the station SST cannot complete RTS/CTS or MU-RTS/CTS channel protection.
- the AP can indicate the channel for replying to the CTS frame for the SST STA through the first bit sequence in the MU-RTS frame.
- the value of the second bit sequence is set to 1 or a reserved state to distinguish it from the STA whose working channel includes the main 20MHz channel.
- the AP can indicate the channel for replying to the CTS frame for the SST STA through the indication information, and the SST STA can also reserve the channel through the MU-RTS/CTS mechanism to reduce the interference when sending and receiving data.
- the AP can indicate the channel of the reply CTS frame for multiple STAs through multiple MU-RTS frames, and the AP can instruct the first MU-RTS frame and the second MU-RTS frame to use the same scrambling code initialization value, which can avoid Collision of different CTS frames.
- the first transmission rate of each RTS frame may be the same.
- the first transmission rate of each RTS frame may be used to determine the same second transmission rate.
- the second sending rate is the primary rate at which the second device sends the CTS frame.
- the frame length of each RTS frame is the same.
- the primary 20MHz channel may be channel 1.
- a 40MHz channel including the main 20MHz channel can be called the main 40HMz channel
- an 80MHz channel including the main 20MHz channel can be the main 80MHz channel
- a 160MHz channel including the main 20MHz channel can be called the main 160MHz channel.
- the working channel of the SST STA cannot include the main 20MHz channel, so the working channel of the SST STA does not include the main 20MHz channel, the main 40HMz channel, the main 80MHz channel and the main 160MHz channel. Since the current communication channel between the AP and the STA can support a maximum bandwidth of 320MHz, the 320MHz bandwidth is taken as an example to further illustrate the working channel of the SST STA.
- AP1 schedules STA102 to work on an 80MHz secondary channel.
- the 80 MHz secondary channel may be any of channel 5-channel 8, channel 9-channel 12, and channel 13-channel 16.
- An anchor channel may be determined for the STA 102 for it. Assume that STA102 is scheduled to work on channel 5-channel 8 with a bandwidth of 80MHz. Then the target channel of the STA 102 can be any one of channel 5 - channel 8 (channel 5 shown in FIG. 2 ).
- the target channel can be called the anchor 20MHz channel, including a 40MHz channel of the anchor 20MHz (eg, channel 5-channel 6), and can be called the anchor 40MHz channel, including an 80MHz channel of the anchor 20MHz channel (eg, channel 5-channel 8) Can be called the anchor 80MHz channel.
- the target channel may also be called a temporary main 20MHz channel, a negotiated 20MHz channel, etc., which is different from the main 20MHz channel, and the name of the target channel is not limited in this application.
- MU-RTS is a trigger frame (trigger frame), and the trigger frame may include one or more user information (user info) fields.
- the user info field may be as shown in FIG. 4 .
- the association identifier (association identifier, AID) 12 is used to identify the target STA, and the resource unit allocation (resource unit allocation, RU Allocation) field can be used to allocate the channel for sending the CTS frame to the target STA.
- the bit sequence B0-B7 may be included in the RU Allocation field. Therefore, the AP can allocate the channel for sending the CTS frame to the SST STA through the RU Allocation field in the MU-RTS frame.
- the indication information may include bit sequences B0-B7.
- B1-B7 may be referred to as the first bit sequence, and are used to indicate the first channel for sending the CTS frame.
- B0 may be referred to as the second bit sequence, and may be used to indicate the working channel of the SST STA. It should be understood that since the SST STA can know its own working channel, the value of B0 may be 1, or may be in a reserved state.
- all the MU-RTS frames may use the same scrambling code initialization value.
- the AP sends MU-RTS1 over channel 1-channel 4, MU-RTS2 over channel 5-channel 8, and MU-RTS3 over channel 9-channel 16.
- the scrambling code initialization values of MU-RTS1, MU-RTS2 and MU-RTS3 may all be the same.
- some bits in the scrambler sequence field of at least one MU-RTS frame in MU-RTS1 and MU-RTS2 do not indicate that the MU-RTS frame is carried
- the bandwidth of the PPDU For example, the B5B6 bit in the scrambler sequence field of MU-RTS1 can indicate the bandwidth of PPDU1, then the B5B6 bit in the scrambler sequence field of MU-RTS2 can be the same as the B5B6 bit of MU-RTS1, but does not indicate the bandwidth of PPDU2.
- the frame lengths of the at least two RTS frames are the same.
- the AP sends RTS1 and RTS2 on at least two channels
- the AP uses 13 time-domain symbols when sending RTS1
- the AP also uses 13 time-domain symbols when sending RTS2.
- at least one RTS frame is used to indicate the channel on which the SST STA sends the CTS frame.
- Embodiments of the present application further provide a computer-readable storage medium, including instructions, which, when executed on a computer, cause the computer to execute the method performed by the AP or the STA in FIG. 5 or FIG. 9 .
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Abstract
Description
Claims (18)
- 一种协议数据单元PPDU的传输方法,其特征在于,包括:第一设备发送第一数据单元,所述第一数据单元至少包括第二数据单元和第三数据单元;所述第二数据单元用于承载第一多用户请求发送MU-RTS帧,所述第三数据单元用于承载第二MU-RTS帧;所述第一MU-RTS帧和所述第二MU-RTS帧使用相同的扰码初始化数值。
- 根据权利要求1所述的方法,其特征在于,所述第一MU-RTS帧用于指示第二设备发送清除发送CTS帧的第一信道;所述第二MU-RTS帧用于指示第三设备发送CTS帧的第二信道;在所述第一信道的带宽和所述第二信道的带宽部分或全部重叠时,所述第一MU-RTS帧和所述第二MU-RTS帧使用相同的扰码初始化数值。
- 根据权利要求1所述的方法,其特征在于,所述第一数据单元包括多个数据单元;所述多个数据单元中的每一个数据单元用于承载一个MU-RTS帧,所有MU-RTS帧的扰码初始化数值全部相同;所述第二数据单元和所述第三数据单元是所述多个数据单元中的其中两个。
- 根据权利要求1-3任一项所述的方法,其特征在于,所述第一MU-RTS帧和所述第二MU-RTS帧包括第一比特序列,所述第一比特序列用于指示所述第一数据单元的带宽;或者所述第一MU-RTS帧包括第二比特序列,所述第二比特序列用于指示所述第二数据单元的带宽;所述第二MU-RTS帧包括第三比特序列,所述第三比特序列用于指示所述第三数据单元的带宽。
- 一种请求发送RTS帧的传输方法,其特征在于,包括:第一设备在至少两个信道上分别发送请求发送RTS帧;所述第一设备在所述至少两个信道上接收帧长相同的清除发送CTS帧。
- 根据权利要求5所述的方法,其特征在于,每一个所述RTS帧的帧长相同。
- 根据权利要求5所述的方法,其特征在于,每一个所述RTS帧的第一发送速率相同;或者每一个所述RTS帧的第一发送速率用于确定出相同的第二发送速率;所述第二发送速率是第二设备发送所述CTS帧的主速率。
- 一种清除发送CTS帧的传输方法,其特征在于,包括:第二设备接收请求发送RTS帧;所述第二设备以第二发送速率发送清除发送CTS帧;所述第二发送速率的取值是固定速率;或者所述第二设备以第三发送速率发送CTS帧;其中,采用所述第三发送速率发送CTS帧的帧长与采用固定速率发送CTS帧的帧长相同。
- 一种协议数据单元PPDU的传输装置,其特征在于,包括:处理单元和通信单元;所述处理单元,生成第一数据单元,所述第一数据单元至少包括第二数据单元和第三数据单元;所述第二数据单元用于承载第一多用户请求发送MU-RTS帧,所述第三数据单元用于承载第二MU-RTS帧;所述第一MU-RTS帧和所述第二MU-RTS帧使用相同的扰码初始化数值;所述通信单元,用于发送所述第一数据单元。
- 根据权利要求9所述的装置,其特征在于,所述第一MU-RTS帧用于指示第二设备发送清除发送CTS帧的第一信道;所述第二MU-RTS帧用于指示第三设备发送CTS帧的第二信道;在所述第一信道的带宽和所述第二信道的带宽部分或全部重叠时,所述第一MU-RTS帧和所述第二MU-RTS帧使用相同的扰码初始化数值。
- 根据权利要求9所述的装置,其特征在于,所述第一数据单元包括多个数据单元;所述多个数据单元中的每一个数据单元用于承载一个MU-RTS帧,所有MU-RTS帧的扰码初始化数值全部相同;所述第二数据单元和所述第三数据单元是所述多个数据单元中的其中两个。
- 根据权利要求9-11任一项所述的装置,其特征在于,所述第一MU-RTS帧和所述第二MU-RTS帧包括第一比特序列,所述第一比特序列用于指示所述第一数据单元的带宽;或者所述第一MU-RTS帧包括第二比特序列,所述第二比特序列用于指示所述第二数据单元的带宽,所述第二MU-RTS帧包括第三比特序列,所述第三比特序列用于指示所述第三数据单元的带宽。
- 一种请求发送RTS帧的传输装置,其特征在于,包括:处理单元和通信单元;所述处理单元,用于生成多个请求发送RTS帧;所述通信单元,用于在至少两个信道上分别发送RTS帧;所述通信单元,还用于在所述至少两个信道上接收帧长相同的清除发送CTS帧。
- 根据权利要求13所述的装置,其特征在于,每一个所述RTS帧的帧长相同。
- 根据权利要求13所述的装置,其特征在于,每一个所述RTS帧的第一发送速率相同;或者每一个所述RTS帧的第一发送速率用于确定出相同的第二发送速率;所述第二发送速率是第二设备发送所述CTS帧的主速率。
- 一种清除发送CTS帧的传输装置,其特征在于,包括:处理单元和通信单元;所述通信单元,用于接收请求发送RTS帧;所述处理单元,用于生成清除发送CTS帧;所述通信单元,还用于以第二发送速率发送清除发送CTS帧;所述第二发送速率的取值是固定速率;或者所述通信单元,还用于以第三发送速率发送CTS帧;其中,采用所述第三发送速率发送CTS帧的帧长与采用固定速率发送CTS帧的帧长相同。
- 一种电子设备,其特征在于,所述装置包括处理器和存储器,所述存储器,用于存储计算机程序或指令;所述处理器,用于执行存储器中的计算机程序或指令,使得权利要求1-4中任一项所述的方法被执行或者使得权利要求5-7任一项所述的方法被执行或者使得权利要求8所述的方法被执行。
- 一种计算机可读存储介质,其特征在于,所述计算机可读存储介质存储有计算机可执行指令,所述计算机可执行指令在被计算机调用时,使所述计算机执行如权利要求1-4任一项所述的方法或者执行如权利要求5-7任一项所述的方法或者执行如权利要求8所述的方法。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
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CA3192380A CA3192380A1 (en) | 2020-12-18 | 2021-11-18 | Protocol data unit ppdu transmission method and apparatus |
KR1020237010213A KR20230056046A (ko) | 2020-12-18 | 2021-11-18 | 프로토콜 데이터 유닛 ppdu 전송 방법 및 장치 |
MX2023004717A MX2023004717A (es) | 2020-12-18 | 2021-11-18 | Metodo y aparato de transmision de unidad de datos de protocolo ppdu. |
AU2021404523A AU2021404523B9 (en) | 2020-12-18 | 2021-11-18 | Protocol data unit ppdu transmission method and apparatus |
JP2023531015A JP2023550771A (ja) | 2020-12-18 | 2021-11-18 | プロトコルデータユニットppdu送信方法および装置 |
EP21905434.3A EP4199577A4 (en) | 2020-12-18 | 2021-11-18 | METHOD AND DEVICE FOR TRANSMITTING PROTOCOL DATA UNITS (PPDU) |
US18/331,185 US20230319889A1 (en) | 2020-12-18 | 2023-06-08 | Protocol data unit ppdu transmission method and apparatus |
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CN202011511846.3A CN114650564A (zh) | 2020-12-18 | 2020-12-18 | 一种协议数据单元ppdu的传输方法和装置 |
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WO2017075982A1 (zh) * | 2015-11-04 | 2017-05-11 | 华为技术有限公司 | 一种数据传输方法及装置 |
CN107645787A (zh) * | 2016-07-21 | 2018-01-30 | 中兴通讯股份有限公司 | 一种数据传输的保护方法及装置 |
US10701686B1 (en) * | 2015-06-15 | 2020-06-30 | Newracom, Inc. | Protection mechanism for multi-user transmission |
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CN108370298B (zh) * | 2015-10-12 | 2021-03-09 | 纽瑞科姆有限公司 | 用于无线传输的保护方法 |
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Patent Citations (3)
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US10701686B1 (en) * | 2015-06-15 | 2020-06-30 | Newracom, Inc. | Protection mechanism for multi-user transmission |
WO2017075982A1 (zh) * | 2015-11-04 | 2017-05-11 | 华为技术有限公司 | 一种数据传输方法及装置 |
CN107645787A (zh) * | 2016-07-21 | 2018-01-30 | 中兴通讯股份有限公司 | 一种数据传输的保护方法及装置 |
Non-Patent Citations (3)
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JARKKO KNECKT (APPLE): "MU-RTS to SST STAs", IEEE DRAFT; 11-20-1583-01-00BE-MU-RTS-TO-SST-STAS, IEEE-SA MENTOR, PISCATAWAY, NJ USA, vol. 802.11 EHT; 802.11be, no. 1, 19 November 2020 (2020-11-19), Piscataway, NJ USA , pages 1 - 18, XP068175246 * |
PO-KAI HUANG (INTEL): "MU-RTS/CTS for DL MU", IEEE DRAFT; 11-15-0867-01-00AX-MU-RTS-CTS-FOR-DL-MU, IEEE-SA MENTOR, PISCATAWAY, NJ USA, vol. 802.11ax, no. 1, 14 July 2015 (2015-07-14), Piscataway, NJ USA , pages 1 - 24, XP068157902 * |
See also references of EP4199577A4 * |
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MX2023004717A (es) | 2023-05-10 |
JP2023550771A (ja) | 2023-12-05 |
KR20230056046A (ko) | 2023-04-26 |
EP4199577A1 (en) | 2023-06-21 |
CN114650564A (zh) | 2022-06-21 |
EP4199577A4 (en) | 2024-01-24 |
AU2021404523B2 (en) | 2024-05-30 |
AU2021404523A1 (en) | 2023-04-06 |
US20230319889A1 (en) | 2023-10-05 |
AU2021404523B9 (en) | 2024-06-13 |
CA3192380A1 (en) | 2022-06-23 |
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