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Downlink multi-user data transmission method and device, storage medium and terminal

A data transmission method and data transmission technology, which are applied in the field of terminals, storage media, downlink multi-user data transmission methods and devices, can solve problems affecting the transmission efficiency of downlink multi-user data transmission, reduce the probability of using downlink multi-user transmission, and affect Wi- Fi performance and other issues to achieve the effect of increasing the probability of transmission, reducing the probability of channel parameter expiration, and increasing the probability of use

Active Publication Date: 2021-08-06
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, there are many defects in the existing processing mechanism for downlink multi-user data transmission. It is very likely that such a situation will occur: the interval between downlink multi-user data transmission and NDP-based channel detection process is too long, resulting in the execution of NDP-based channel detection. The channel parameters obtained during the process expire and become invalid, which reduces the probability of using downlink multi-user transmission, seriously affects the transmission efficiency of downlink multi-user data transmission, and then affects Wi-Fi performance

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  • Downlink multi-user data transmission method and device, storage medium and terminal
  • Downlink multi-user data transmission method and device, storage medium and terminal
  • Downlink multi-user data transmission method and device, storage medium and terminal

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Embodiment Construction

[0030] As can be described above, since NDP-based channel probe processes performed between AP and multiple STAs is a comparative time-spent process, and the AP is extremely likely to appear when performing a process mechanism for decrecting multi-user data transmission. Such a situation: downlink multi-user data transmission and NDP-based channel detection process is too long, resulting in an expiration expiration of channel parameters obtained when performing NDP-based channel detection processes, reducing the cost of using multi-user transmission, seriously affects downlink Transfer efficiency of multi-user data transmission, which affects Wi-Fi performance.

[0031] Specifically, the process mechanism for the existing multi-user data transmission mainly includes the following two types:

[0032] First, the AP is based on traditional enhanced distributed channel access (EDCA) mechanism to compete (hereinafter referred to as existing solutions):

[0033] First, the AP executes t...

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Abstract

A downlink multi-user data transmission method and device, a storage medium, and a terminal, the method comprising: in response to successful channel competition, performing an NDP-based channel detection process; according to a preset TxOP duration, or, according to the channel detection process Determine whether to start the downlink multi-user data transmission according to the busy / idle state of the channel within the first period after the end. The solution provided by the present invention can increase the use probability of downlink multi-user transmission, and improve the success rate of downlink multi-user data transmission, thereby improving the efficiency of downlink multi-user transmission and improving Wi-Fi performance.

Description

Technical field [0001] The present invention relates to the field of communication technologies, and in particular, to a downlink multi-user data transmission method and device, a storage medium, and a terminal. Background technique [0002] In the 802.11ac, referred to as Wi-Fidelity, referred to as a Very Highrthroughput, a VHT) standard protocol, introducing a multi-user transfer based on wireless multi-entering technology (DownLink Multiple User " Multiple Input Multiple Output, DL MU-MIMO technology. Specifically, this technique can be based on MIMO to allocate data transfer to different users to different spatial flow, thereby implementing multiple users simultaneously transmitting, improving Wi-Fi performance. [0003] To achieve DL MU-MIMO (hereinafter referred to as a downlink multi-user data transmission), an access point (AP) is required to perform NDP-based channels with multiple mobile stations (STATION, refermstrist STA, or Site). The detection process (NDP Sounding...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/08H04W74/08
CPCH04W74/08H04W24/08H04B7/0452H04W74/0816H04W74/0808
Inventor 徐彦超余慶華赵育仁
Owner SPREADTRUM COMM (SHANGHAI) CO LTD