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Spatial information network end-to-end reliability evaluation method

A technology of spatial information network and reliability, applied in the field of end-to-end reliability evaluation of spatial information network, can solve the problems of inability to accurately calculate the end-to-end reliability of spatial information network, large transmission delay, and inability to adapt. Good application prospects and comprehensive effects of communication reliability indicators

Active Publication Date: 2021-07-09
DALIAN UNIV
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Problems solved by technology

The research on the reliability of space information network communication is limited. These methods cannot adapt to the special background environment where the node links of space information network are multi-state and the transmission delay is large. End-to-end reliability of information network

Method used

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  • Spatial information network end-to-end reliability evaluation method
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  • Spatial information network end-to-end reliability evaluation method

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Embodiment Construction

[0049] The present invention will be described below through specific examples.

[0050] In the space information network, the operating period of the satellite is constant, and the period T is divided into m time segments. In each time segment, assuming that the topology remains unchanged, the topology of the satellite network in a certain time segment is as follows: figure 1 As shown, the node set is V={v 1 ,v 2 ,v 3 ,v 4 ,v 5 ,v 6 ,v 7 ,v 8 ,v 9 ,v 10 ,v 11},v 1 is the source node, v 11 as the destination node.

[0051] Given link bandwidth (10, 7, 6, 5, 6, 5, 10, 3, 9, 8, 7, 6, 7, 8, 7, 10), the remaining bandwidth of each link, node (source node Except) the distribution of packet loss rate multi-state performance parameters is shown in Table 1 and Table 2.

[0052] Table 1 Distribution of remaining bandwidth performance parameters

[0053]

[0054]

[0055] Table 2 Distribution of packet loss rate performance parameters

[0056]

[0057]

[005...

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Abstract

The invention discloses an end-to-end reliability evaluation method for a spatial information network. In combination with the characteristics of multiple service types, large transmission delay, multi-state node link and the like of a low earth orbit satellite network, the influence of link residual bandwidth, multi-state node packet loss rate and delay on reliability is comprehensively considered by using a linear weight method, and different weights are given to bandwidth sensitive services, delay sensitive services and reliability sensitive services; and the communication reliability in different service background environments is calculated, so the information network communication reliability index is more comprehensive, and the method adapts to the special environment of the spatial information network. In a satellite network end-to-end reliability modeling process, multi-state division is performed on a satellite network communication reliability index, so a spatial information network communication reliability index is more comprehensive; the end-to-end communication reliability under different service background environments can be accurately calculated through the linear weight method according to different QoS requirements of different services. The method has a good application prospect.

Description

technical field [0001] The invention relates to a space information network reliability assessment technology, in particular to a space information network end-to-end reliability assessment method. Background technique [0002] The key to the reliability research of space information network communication is to establish an end-to-end reliability evaluation method. At present, there are not many researches on the end-to-end reliability evaluation method of space information network. With the improvement of people's service quality requirements, the reliability requirements It is getting higher and higher, and it is urgent to solve the problem of establishing the end-to-end reliability evaluation method of spatial information network. [0003] At present, the end-to-end communication network reliability assessment methods for terrestrial wireless networks include network cut set method, simple path method, state enumeration method, factor decomposition method and tolerance-ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/26H04L12/851H04B7/185
CPCH04L41/142H04L41/145H04L43/0829H04L43/0882H04L43/0811H04L47/24H04B7/18521Y02D30/70
Inventor 杨力蔡睿妍潘成胜戚耀文张容容
Owner DALIAN UNIV
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