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Data transmission method based on multi-source, multi-path cooperative transmission control protocol

A data transmission method and coordinated transmission technology, applied in the field of wireless network communication, can solve the problems of increased waiting time, inability to handle, difficult to popularize and apply, etc., and achieve the effects of reducing transmission delay, improving utilization rate, and improving data transmission efficiency.

Active Publication Date: 2019-12-13
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] (1) Developers need to modify the application layer interface, which has poor compatibility with many current network applications and is difficult to promote and apply;
[0008] (2) Due to the large difference between the format of SCTP packets and the TCP protocol, traditional network firewalls, NAT and other network intermediate devices cannot process or even discard them, resulting in the failure of SCTP packets to pass through, such as NAT or firewalls, which will block SCTP packets
[0011] (1) In the actual situation, the number of IP interfaces available to user terminal equipment (such as smart phones) is mostly 2, which limits the further improvement of network utilization and the further reduction of delay
[0012] (2) Due to the inheritance of the single buffer mechanism of the TCP protocol, that is, no matter the sender or the receiver has only one buffer, when MPTCP multi-path transmission, too many paths will easily cause the buffer to be too large and out of order, consume CPU computing resources, increase waiting time

Method used

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  • Data transmission method based on multi-source, multi-path cooperative transmission control protocol
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  • Data transmission method based on multi-source, multi-path cooperative transmission control protocol

Examples

Experimental program
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Effect test

Embodiment 1

[0101] The processing flow of a data transmission method based on a multi-source, multi-path coordinated transmission control protocol provided in this embodiment is as follows: Figure 15 As shown, the following processing steps are included:

[0102] Step S10, establishing an MPTCP connection between the terminal and the source.

[0103] The terminal initiates an MPTCP handshake to the source through a wireless communication network or a wired communication network, and an MPTCP connection between the terminal and the source is established through a three-way handshake process, and a version number is exchanged between the terminal and the source. The source refers to the end that can provide data, and the server is a kind of source.

[0104] Step S20, establishing an MS-MPTCP connection between the sub-source device and the terminal.

[0105] One or more sub-source devices are set on the access terminal side. The sub-source devices have multiple IP addresses and are conne...

Embodiment 2

[0121] Carrier-side future 5G network architecture

[0122]Due to the suddenness of network usage, the utilization rate of network equipment on the carrier side is not high, but the user bandwidth cannot be effectively improved. This is because due to the single IP address binding of the TCP protocol, the single path limits the improvement of network utilization rate. . In the future, the wireless communication rate of 5G terminals can reach more than 20Gbps, which puts huge demands on the operator-side network, and the bottleneck of MPTCP for further expansion of network utilization lies in the limited number of IPs of terminal devices, the limitation of network card receiving capacity, and the limitation of CPU memory, etc. , the mobile phone usually can only have a sim (Subscriber Identification Module) card through a single operator to access the Internet, that is to say, it has an IP. Using the present invention can increase the IP by adding sub-source equipment, so that ...

Embodiment 3

[0132] large file upload

[0133] In some scenarios, there are high requirements for uploading large files, and it is necessary to transmit as fast as possible and free the terminal. In this scenario, multi-source cooperative MPTCP can be used to solve this problem. The terminal can transmit data to the nearest sub-source device. This kind of short-distance transmission bandwidth is large and stable, and there is no congestion interference, and then the sub-source can confirm the data with the source one by one. The terminal does not need to wait for the data to be transmitted through the long route network, but only needs to transmit the data to the nearest sub-source device, and the sub-source device completes this time-consuming task, thereby liberating the terminal as soon as possible.

[0134] Specific implementation steps:

[0135] 1. The sub-source device can be a switch or a router, or a general source of x86 architecture, which supports MS-MPTCP.

[0136] 2. Upgrade...

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Abstract

The invention provides a data transmission method based on a multi-source and multi-path coordinated transmission control protocol. The method mainly includes: establishing an MS-MPTCP connection between the sub-source device and the terminal, establishing an MS-MPTCP connection between the sub-source device and the source; the source uses the MS-MPTCP connection to communicate with the sub-source device through multiple paths For data communication, the sub-source device uses the MS-MPTCP connection to communicate with the terminal. The present invention can also increase the bandwidth as much as possible through multi-paths when the available IP interfaces of the terminal are few, thereby improving the utilization rate of network bandwidth, reducing the transmission delay of data, and providing data transmission between the source and the terminal. transmission efficiency. The source can push the buffer cache data to the sub-source device, and the terminal can also obtain data from the sub-source device, so as to alleviate the problem of source memory consumption and waiting time increase caused by the buffer cache data being too large and packet out-of-order when multi-path transmission of large amounts of data . The sub-source can obtain and control the congestion window of the access terminal, so as to implement congestion control more accurately.

Description

technical field [0001] The invention relates to the technical field of wireless network communication, in particular to a data transmission method based on a multi-source and multi-path coordinated transmission control protocol. Background technique [0002] The Internet mainly relies on two protocols, namely the IP (Internet Protocol, Internet Protocol) protocol and the TCP (Transmission Control Protocol, Transmission Control Protocol) protocol. The IP protocol provides an unreliable message exchange service between end-to-end, and the TCP protocol is a transport layer protocol that provides reliable message exchange based on IP and realizes the reliable exchange of Internet data, laying the foundation for our current use The communication protocol foundation of the vast Internet. TCP has been continuously improved since it was proposed. [0003] In recent years, with the intelligentization and modernization of user equipment, equipment usually has multiple network interf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L12/801
CPCH04L47/12H04L47/193H04L69/14H04L69/163
Inventor 权伟崔恩放张宏科苏伟刘刚刘亚娜赵允
Owner BEIJING JIAOTONG UNIV