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Data transmission method and system and storage medium

A data transmission method and data packet technology, applied in the field of systems and storage media, and data transmission methods, can solve the problems of reducing the sending rate of data packets, reducing the efficiency of data transmission, and being indistinguishable from sources, etc.

Pending Publication Date: 2022-04-08
PURPLE MOUNTAIN LAB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] The current TCP algorithm (Reno, NewReno, Westwood, Cubic) will misunderstand the packet loss caused by the air interface as the packet loss caused by network congestion, and the packet loss caused by the air interface and the packet loss caused by network congestion are indistinguishable for the source.
When packet loss occurs due to the air interface, the congestion control logic adjusts the congestion control window and the slow start threshold to reduce the data packet sending rate, thereby reducing the efficiency of data transmission

Method used

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  • Data transmission method and system and storage medium
  • Data transmission method and system and storage medium
  • Data transmission method and system and storage medium

Examples

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example 1

[0066] The method described in this embodiment is used during data transmission between the base station and the mobile phone. Assume that the mobile phone downloads files through the FTP protocol or the edge computing device downloads and updates firmware through the air interface. At this time, the mobile phone or edge computing device is the destination of data transmission, and the firmware server and FTP server are the sources. The source and destination have established a TCP connection through a three-way handshake. Source IP address: 172.171.6.10, destination IP address: 9.171.6.11, source port 4500, destination port: 20100.

[0067] Such as Figure 4 As shown, the source end sends a data packet with a sequence number of 1000 and a length of 100 to the destination end.

[0068] After the data packet arrives at the base station, the base station forwards it to the destination end. Due to channel mutations and other reasons, the bit error rate increases, making it imp...

example 2

[0083] The method described in this embodiment is used inside the mobile device. Such as cameras, radars, etc., send detected image video data and radar data to edge computing devices through mobile modules.

[0084] Such as Figure 5 As shown, the source end sends a data segment with a sequence number of 1000 and a length of 100 to the base station.

[0085] The data packet is forwarded by the baseband processing unit to the base station, but the forwarding fails. After the baseband processing unit obtains the message information (sequence number 1000, length 100, source and destination IP address and port number), the message loss option is constructed, and the option is inserted into the TCP header of the destination ACK message or processed by the baseband The newly constructed TCP ACK message of the unit.

[0086] The TCP options are as follows: the option type value is 32, the option length is 6, the length is 100, and the sequence number is 1000. This function can b...

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Abstract

The invention discloses a data transmission method and device and a storage medium, and the method comprises the steps: a source end and a destination end carry out TCP data transmission through forwarding equipment, and the forwarding equipment and the destination end are directly or indirectly connected through an air interface; when the forwarding device detects that the air interface fails to forward the data packet, the ACK data packet is sent to the source end; and the source end records the serial number and the length of the data packet failed in air interface forwarding, and associates the serial number and the length with the corresponding TCP data stream to form an air interface forwarding failure data list. According to the method provided by the invention, after the air interface is subjected to packet loss, the forwarding equipment sends the serial number and the length of the lost data packet to the source end, and the source end does not process according to the lost packet and does not adjust a congestion window and a slow start threshold value when receiving a repeated confirmation number subsequently, so that the data sending performance is not reduced.

Description

technical field [0001] The present invention relates to a data transmission method, system and storage medium, belonging to the field of data transmission technology, especially in the field of data transmission using 4G, 5G and other air interfaces, such as air interface data transmission and mobile broadband data transmission in the field of edge computing. Background technique [0002] 5G technology promotes the development of all walks of life in society, such as the Internet of Vehicles, smart mines, etc., making the industry more intelligent and efficient. Many technologies are involved behind these transformations, such as AI model optimization and data transmission. In the field of mobile broadband, the download and live broadcast of high-definition video also involves the transmission of data over the air interface. [0003] There are two commonly used technologies for data transmission in the transport layer: one is UDP User Datagram Protocol (User Datagram Protoc...

Claims

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Application Information

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IPC IPC(8): H04W28/02H04L47/12H04L47/10H04L47/193
Inventor 陈国海马海波黄永明尤肖虎
Owner PURPLE MOUNTAIN LAB
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