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Multipath TCP (transmission control protocol) message scheduling method

A transmission protocol and scheduling method technology, applied in transmission systems, digital transmission systems, electrical components, etc., can solve problems such as the impact of the overall throughput of the bottleneck link, and achieve the effect of improving stability and robustness

Active Publication Date: 2012-10-31
TSINGHUA UNIV
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a multi-path TCP transmission protocol message scheduling method to solve the transmission problem caused by the difference between multi-paths and the impact of the bottleneck link caused by the poor sub-flow on the overall throughput

Method used

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  • Multipath TCP (transmission control protocol) message scheduling method
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  • Multipath TCP (transmission control protocol) message scheduling method

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Embodiment

[0028] refer to figure 1 , shows a flow chart of a multipath TCP transmission protocol message scheduling method of the present invention, the method specifically includes:

[0029] Step S101, after the sub-flow connection is established, link information of each sub-flow is collected in real time; the link information includes packet loss rate, actual transmission delay and current congestion window;

[0030] Step S102, calculating the theoretical transmission delay of each sub-stream, sorting the packet loss rate and theoretical transmission delay of all sub-streams;

[0031] Step S103, scheduling packets according to the theoretical transmission delay, packet loss rate and congestion window of each subflow.

[0032] Concrete step S103 comprises the following steps:

[0033] A. Sort the sub-flows according to the theoretical transmission delay and packet loss rate of the sub-flows, and determine the packet scheduling priority of the sub-flows;

[0034] B. Determine the nu...

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Abstract

The invention provides a multipath TCP (transmission control protocol) message scheduling method. The bottleneck sub-flow problem in multipath is solved by reasonably scheduling messages of sub-flows according to difference of the packet loss rate of the sub-flows and time delay. Joint transmission of all sub-flows is realized, network bandwidth is fully used, and network capacity and stability and robustness in transmission are effectively improved.

Description

technical field [0001] The invention relates to the technical field of multipath reliable transmission, in particular to a multipath TCP transmission protocol message scheduling method. Background technique [0002] Traditional TCP is a connection-oriented reliable transport protocol. Its congestion control ensures the friendliness between TCP streams. However, this congestion mechanism believes that packet loss is caused by network congestion. In the case of high packet loss rate and delay In a wireless network, the transmission performance of traditional TCP will be severely degraded due to large packet loss and delay, which cannot meet the transmission requirements of end-to-end users. [0003] The IETF proposed a multipath TCP transmission protocol (Multipath TCP) in 2010. Multipath TCP is an extension of traditional TCP. It improves the throughput of the communication terminal by increasing the number of paths (that is, the number of subflows), divides the received dat...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L29/06H04L47/31H04L47/56
Inventor 崔勇潘广进王弘毅
Owner TSINGHUA UNIV
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