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Method and device for transmitting protocol data unit (PPDU)

A technology of protocol data unit and data unit, which is applied in the field of communication, and can solve problems such as inability to complete RTS/CTS or MU-RTS/CTS channel protection, working channels not including the main 20MHz channel, etc.

Pending Publication Date: 2022-06-21
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the working channel of the SST site does not include the main 20MHz channel, and the channel occupied by the CTS transmission must include the main 20MHz
That is to say, the station SST cannot complete RTS / CTS or MU-RTS / CTS channel protection

Method used

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  • Method and device for transmitting protocol data unit (PPDU)
  • Method and device for transmitting protocol data unit (PPDU)
  • Method and device for transmitting protocol data unit (PPDU)

Examples

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Embodiment Construction

[0063] Currently, the basic framework commonly used in wireless access standards is that one AP accesses the Internet and associates multiple sites. Uplink and downlink communication is possible between the AP and the associated station. The communication channel between the AP and multiple associated stations can support a maximum bandwidth of 320MHz, and each associated station can communicate with the AP on a designated channel.

[0064] Since hidden nodes are ubiquitous in wireless local area networks, RTS / CTS interaction can be used to reserve channels for STAs. The principle is that when the AP wants to send a message to the STA, it can first send an RTS frame. Other APs and STAs around the AP can keep silent after receiving the RTS frame. The STA may send the CTS frame after receiving the RTS frame. APs and STAs around the STA can also keep silent after receiving the CTS frame. Until the transmission opportunity (TXOP) duration indicated by the length (Duration) fie...

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PUM

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Abstract

The invention provides a transmission method and device of a protocol data unit (PPDU), relates to the technical field of communication, and is used for indicating a channel for sending a CTS frame for an STA. In the method, a first device may send a first data unit. The first data unit may include at least a second data unit and a third data unit. Wherein the second data unit is used for bearing the first MU-RTS frame, and the third data unit is used for bearing the second MU-RTS frame. Wherein the first MU-RTS frame and the second MU-RTS frame use the same scrambling code initialization value. Based on the above scheme, the AP can indicate the channel for replying the CTS frame for the plurality of STAs through the plurality of MU-RTS frames, the AP can indicate the first MU-RTS frame and the second MU-RTS frame to use the same scrambling code initialization value, and the conflict of different CTS frames can be avoided.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular, to a method and apparatus for transmitting a protocol data unit PPDU. Background technique [0002] At present, the basic framework commonly used in wireless access standards is that a wireless access point (AP) accesses the Internet through wired or wireless means, and the AP is associated with multiple sites, and the AP is connected with multiple associated sites. Up and down communication is possible. The communication channel between the AP and multiple associated stations can support a maximum bandwidth of 320MHz, and each associated station can communicate with the AP on a designated channel. [0003] Since hidden nodes are ubiquitous in wireless local area networks, a request to send (RTS) / clear to send (clear to send, CTS) interaction method can be used to reserve channels for associated stations. The RTS frame and the CTS frame may be sent in a non...

Claims

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Application Information

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IPC IPC(8): H04W28/06H04W28/20H04W28/22H04W28/26
CPCH04W28/065H04W28/26H04W28/20H04W28/22Y02D30/70H04W74/0816H04L5/0044H04L5/0037H04L5/0094H04W72/0453H04W72/0457H04L5/005H04L27/2617H04W84/12H04W88/08H04W74/0866
Inventor 李云波淦明于健郭宇宸李伊青黄国刚
Owner HUAWEI TECH CO LTD
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