Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Data transmission method and device

A data transmission method and data packet technology, which are applied in the field of data transmission methods and devices, can solve problems such as playback freezes, low throughput, and poor user experience, so as to improve throughput, improve retransmission efficiency, and reduce TCP layer load. The effect of transmission

Pending Publication Date: 2022-01-11
ALIBABA GRP HLDG LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will lead to low throughput of devices connected to the AP (such as smart speakers), causing playback freezes, and, for some voice transmission services that require high interactivity, lead to extremely poor user experience

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Data transmission method and device
  • Data transmission method and device
  • Data transmission method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] refer to figure 1 , Embodiment 1 of the present invention provides a data transmission method. The method includes:

[0030] S101. Acquire a first modulation and coding strategy MCS index value and a first maximum number of retransmissions corresponding to the first MCS index value.

[0031] Specifically, the first MCS index value is acquired from the multi-level rate table, and the first MCS index value acquired for the first time is the highest-order MCS index value. The multi-level rate table includes a plurality of successively lowered MCS index values, and each MCS index value corresponds to a different transmission rate. As the MCS order represented by the index value decreases, the transmission rate also decreases. Preferably, the MCS index value of the multi-level rate table is selected from the MCS rate table defined in the 802.11n or 802.11ac or 802.11.ax specification. Taking 802.11n as an example, the transmission parameters corresponding to each index va...

Embodiment 2

[0041] refer to figure 2 , Embodiment 2 of the present invention provides a data transmission method, the method comprising:

[0042] S201. Acquire a first MCS index value from a multi-level rate table, and acquire a first maximum number of retransmissions corresponding to the first MCS index value from a multi-level rate retransmission times table. Of course, it is also possible to add a column for the maximum number of retransmissions in the multi-stage rate table, and obtain the first maximum retransmission corresponding to the first MCS index value from the multi-stage rate table while obtaining the first MCS index value. number of passes.

[0043] Specifically, the MCS index value of the multi-level rate table of the present invention is selected from the MCS rate table defined in the 802.11n or 802.11ac or 802.11.ax specification.

[0044] Taking the 802.11n protocol specification as an example, the MCS index supported by the MCS rate table ranges from 0 to 15, where ...

Embodiment 3

[0057] refer to Figure 4 , Embodiment 3 of the present invention provides a data transmission device 400, the device includes:

[0058] An acquisition module, which acquires a first modulation and coding strategy MCS index value and a first maximum number of retransmissions corresponding to the first MCS index value; wherein, the first MCS index value is an MCS index value in a multi-level rate table , the multi-level rate table includes a plurality of sequentially reduced MCS index values, and the transmission rate represented by the plurality of MCS index values ​​decreases sequentially; wherein, the maximum number of retransmissions corresponding to the plurality of MCS index values ​​increases with the The index value is reduced and increased; the sending module transmits the data packet with the transmission parameter corresponding to the first MCS index value; wherein, when the number of consecutive retransmissions is greater than the first maximum number of retransmiss...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a data transmission method. The data transmission method comprises the following steps: collecting a first modulation and coding strategy (MCS) index value and a first maximum retransmission frequency corresponding to the first MCS index value; wherein the first MCS index value is an MCS index value in a multi-order rate table, the multi-order rate table comprises a plurality of MCS index values which are sequentially reduced in order, and transmission rates represented by the plurality of MCS index values are sequentially reduced; wherein the maximum retransmission times corresponding to the plurality of MCS index values are increased along with order reduction of the index values; transmitting the data packet according to a transmission parameter corresponding to the first MCS index value; wherein when the number of continuous retransmission times is greater than the first maximum number of retransmission times, the first MCS index value is reduced by one order. The method can be applied to a strong interference environment of a wireless local area network, and the user experience is improved by improving the retransmission efficiency of the MAC layer, reducing the retransmission of the TCP layer, improving the throughput of wireless transmission and further reducing application layer behaviors such as playing lagging.

Description

technical field [0001] The invention relates to the technical field of wireless data transmission, in particular to a data transmission method and device. Background technique [0002] 802.11n is the fourth-generation wifi technical specification. In the 802.11n era, since the physical rate depends on multiple factors such as modulation method, coding rate, number of spatial streams, and whether 40MHz is bound or not, the combination of these factors affecting throughput will produce There are a lot of physics rates to choose from. [0003] The configuration of the 802.11n radio rate is realized through the MCS index value. The MCS modulation code table is a representation form proposed by 802.11n to characterize the communication rate of WLAN. The MCS regards the factors affecting the communication rate concerned as the columns of the table, and uses the MCS index as the rows to form a rate table. For AP, MCS generally supports a range of 0-15. [0004] In a strong inte...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04L1/00H04L1/18
CPCH04L1/0002H04L1/0009H04L1/1848H04L1/188
Inventor 罗继列
Owner ALIBABA GRP HLDG LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com