Method and system for predicting available bandwidth of end-to-end paths between Internet end nodes

A prediction method and end-node technology, applied in transmission systems, digital transmission systems, data exchange networks, etc., can solve problems such as limited export bandwidth and performance bottlenecks, and achieve the effects of high accuracy, low network intrusion, and reduced overhead.

Inactive Publication Date: 2011-12-07
中国人民解放军理工大学指挥自动化学院
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Problems solved by technology

On the edge network, due to limited resources such as bandwidth, for example, end users currently widely use Internet access methods such as DSL and Cable, resulting in performance bottlenecks in the last hop. [4]
In addition, the egress bandwidth between different ISP networks is usually limited, which is prone to performance bottlenecks

Method used

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  • Method and system for predicting available bandwidth of end-to-end paths between Internet end nodes
  • Method and system for predicting available bandwidth of end-to-end paths between Internet end nodes
  • Method and system for predicting available bandwidth of end-to-end paths between Internet end nodes

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Embodiment 1

[0075] This example gives the Figure 5 In such a network environment, the content of the present invention is used to realize the available bandwidth prediction service between network nodes.

[0076] Such as Figure 5 As shown, two edge networks respectively form independent prediction domains, which are called domain A and domain B respectively. One domain management server and two reference nodes are deployed in each prediction domain, and it is assumed that the connection between the edge network and the core network The incoming bandwidth is 1000Mbps, the access bandwidth of the reference node is 100Mbps, and the H A with H B The access bandwidths are 10Mbps and 5Mbps respectively. If the available bandwidth between nodes in the same prediction domain is determined by the access bandwidth of the node, then firstly through measurement and calculation can be obtained

[0077] avg{avb(H A , LL A )} = 10Mbps

[0078] avg{avb(LL A , LL B )}=100Mbps

[0079] avg{avb(...

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Abstract

The invention discloses a method and system for predicating available bandwidth of end-to-end route between nodes at Internet end. The method includes the steps of implementing performance predication domain division according to the connection relationship of different ISP affiliated networks, and arranging reference nodes and measurement management servers in each predication domain. The reference nodes in different predication domain mutually measure and reach the available bandwidths of each; common nodes and the reference nodes in the located domain thereof mutually measure to reach the available bandwidth of each; the measuring results are recorded by the measurement management servers in corresponding domain, and the available bandwidth of end-to-end route between nodes at Internet end is obtained through calculation. The invention takes the output available bandwidth and input available bandwidth of each node as two independent values to process when predicating available bandwidth. The invention is simple to be operated, has smaller network infestation, is convenient for automation, and has the advantages of being scientific, objective, simple and easy to be operated.

Description

technical field [0001] The invention belongs to the field of network data communication, and specifically proposes a method and a system for predicting the available bandwidth of end-to-end paths between arbitrary nodes in the Internet. Background technique [0002] The available bandwidth of the end-to-end path of the Internet has an important impact on the performance of distributed applications. At present, many large-scale distributed applications need to rely on this information for performance optimization. For example, in the IPTV application based on the P2P mode, the available bandwidth of the path to the peer node The level of video transmission will directly affect the quality of video transmission; based on CDN streaming media services, the optimal server can be selected according to network performance to provide services for users; in Skype and other VoIP systems that need to use relay nodes to bridge host nodes behind NAT / firewalls , the performance informatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L29/06H04L12/24
Inventor 邢长友陈鸣张国敏李杰
Owner 中国人民解放军理工大学指挥自动化学院
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