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Method for regulating network congestion

A technology of network congestion and adjustment method, applied in the field of Internet communication transmission, can solve problems such as network congestion

Inactive Publication Date: 2014-04-30
HENAN UNIV OF SCI & TECH
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Problems solved by technology

[0004] In order to solve the problem that the network congestion adjustment methods in the prior art have certain limitations and cannot solve the problem of network congestion well without affecting the throughput, the present invention provides an adjustment method for network congestion

Method used

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  • Method for regulating network congestion

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Embodiment Construction

[0046] A method for regulating network congestion, comprising the following steps:

[0047] 1) Obtain parameters representing network congestion through the network cognitive module, and use these parameters and the output transmission performance index TPI of the control module at the previous moment as element factors to jointly form factor set A:

[0048]

[0049] In the formula, i and i-1 represent the current moment and the previous moment respectively;

[0050] MDP is the mean jitter product, , where rtt is the round-trip time;

[0051] STT is the short-term throughput, ;

[0052] SOPD is smooth one-way transmission delay, , where ;

[0053] BER is the average bit error rate;

[0054] 2) Establish network packet loss factor set B:

[0055] B=(C,I,U)

[0056] In the formula, C represents network congestion, I represents external interference, and U represents uncertain factors;

[0057] 3) Set the relationship matrix between factor set A and factor se...

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Abstract

A method for regulating network congestion includes the steps of obtaining parameters representing the state of network congestion through a network cognitive module, forming a factor set A with the parameters serving as element factors, then, setting up a network packet loss factor set B, setting the relation matrix of the factor set A and the factor set B, obtaining a cwnd value at the next moment after the factor set A at a certain moment is mapped, and regulating a congestion window of a network sending end according to the cwnd value through a flow control module. Through the method, main factors which influence packet loss are distinguished under different network loads and different error rates, and regulation is conducted according to the main factors. Higher adaptability is achieved compared with a current main TCP, the network performance level can be judged under the condition that the loads are increased and the error rate is high, wireless error packet loss and congestion packet loss are distinguished according to the network performance level, the utilization rate and the handling capacity of links under the high load and high error rate network environment are greatly improved, and therefore transmission performance of the TCP in a heterogeneous network is improved.

Description

technical field [0001] The invention relates to the field of Internet communication transmission, in particular to a method for adjusting network congestion. Background technique [0002] The TCP protocol is the most popular, connection-oriented and reliable point-to-point protocol in wired networks. This protocol is generally applied in the network environment where the bandwidth-delay product is small (the buffer capacity of the bottleneck link is much larger than the bandwidth-delay product of the network) and the channel bit error rate is very low. For the interconnection of heterogeneous networks, due to the characteristics of long delay, high bit error rate, channel asymmetry, vertical switching and dynamic network topology, the transmission performance of TCP protocol is greatly weakened. The long delay affects the slow start algorithm of TCP, making it take a long time to achieve the optimal transmission rate, and requires a large sending window to fully utilize the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/823H04L47/32
Inventor 王辉李哲青范志辉张治学陈祥涛梁祖华李沛谕周毅
Owner HENAN UNIV OF SCI & TECH
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