Multi-path congestion control method for space-ground integrated intelligent network
An intelligent network and congestion control technology, applied in network topology, network traffic/resource management, electrical components, etc. Bit rate and network service differences and other issues, to achieve accurate judgment, good application prospects, improve throughput and bandwidth utilization
Inactive Publication Date: 2021-11-05
DALIAN UNIV
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Problems solved by technology
Research on the congestion control mechanism of space-ground integrated intelligent network is limited, and these methods cannot adapt to the characteristics of satellite network node mobility, high bit error rate and network service diversity
Therefore, new technologies are needed to address the large service variability and high bit error rates in satellite networks
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[0072] The present invention will be further described below in conjunction with accompanying drawing. Such as Figure 1-3 As shown, the specific steps of the congestion control method of the present invention are as follows:
[0073] Step1: According to the satellite position, calculate the propagation delay in the satellite network every Δt seconds, and estimate the round-trip delay of the network.
[0074] Step2: Periodically detect the bottleneck bandwidth in the link, calculate the deliveryRate of each subflow according to the sending rate and confirmation rate, and finally determine the bottleneck bandwidth of the link.
[0075] Step3: Judge the network congestion status according to the calculated link bottleneck bandwidth and round-trip delay. Smooth the round-trip delay and judge SRTT propt >RTT min Whether the conditions of (1-λ)% and deliverRate
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The invention discloses a multi-path congestion control method for a space-ground integrated intelligent network, which comprises the following steps of: establishing a congestion state judgment method, and judging a network congestion state by adopting round-trip time (RTT) and bottleneck bandwidth estimation; and establishing an improved congestion control method. Aiming at the high bit error rate and the high delay characteristic of the space-ground integrated intelligent network, a scheme based on RTT and bandwidth estimation is improved by referring to a BBR congestion control mechanism, and a calculation method based on bottleneck bandwidth and propagation delay is refined, so that the judgment on the network congestion state is more accurate. On the basis of mechanism research on MPTCP multi-path congestion control, an improved LIA algorithm is provided, aiming at different QoS requirements, under the condition that network utility is maximized, the congestion window reduction proportion is adjusted in a self-adaptive mode, and the throughput and the bandwidth utilization rate are improved. The space-ground integrated intelligent network congestion control mechanism provided by the invention has a good application prospect.
Description
technical field [0001] The present invention relates to a space-ground integrated intelligent network, in particular to a space-ground integrated intelligent network multi-path congestion control method (AMPTCP-RB, Adaptive MPTCP based on RTT and Bottleneck Bandwidth). Background technique [0002] In the space-ground integrated intelligent network, the highly dynamic topology of the space satellite network makes the nodes mobile. At the same time, the space-ground integrated network needs to provide diversified network services for various services, which leads to great differences in the services of different links and causes business problems. Quality of service (QoS, quality of service) is difficult to guarantee; in addition, the high bit error rate in the satellite network communication environment leads to the loss of most packet data, making the traditional ground network TCP congestion control scheme inapplicable in the space-ground integrated intelligent network. Th...
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IPC IPC(8): H04W28/02H04W40/12H04W84/06
Inventor 杨力潘成胜魏德宾李瑛琳戚耀文
Owner DALIAN UNIV
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