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A qos-based method for analyzing the reliability of satellite network end-to-end communication

A technology of satellite network and analysis method, which is applied in the field of reliability analysis of satellite network transmission, and can solve the problem of failure to consider multi-path simultaneous transmission network reliability, single-path transmission end-to-end reliability inconsistency, reliability reduction, etc. problem, achieve good application prospects, improve reliability, and shorten end-to-end delay

Active Publication Date: 2021-08-10
DALIAN UNIV
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  • Application Information

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Problems solved by technology

Scholars at home and abroad do not consider the reliability of multi-path simultaneous transmission networks when studying end-to-end reliability, and only consider the end-to-end reliability of single-path transmission, which is not in line with the actual situation and leads to a decrease in reliability

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  • A qos-based method for analyzing the reliability of satellite network end-to-end communication
  • A qos-based method for analyzing the reliability of satellite network end-to-end communication
  • A qos-based method for analyzing the reliability of satellite network end-to-end communication

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Embodiment Construction

[0067] Embodiments of the present invention are as follows:

[0068] Divide the satellite operation period T into n time slices [t 0 =0,t 1 ],[t 1 ,t 2 ],[t 2 ,t 3 ],…,[t n-1 ,t n =T]. In each time slice, it is assumed that the topology remains unchanged, and the switching of links and the change of network topology are only at the time point t 0 ,t 1 ,t 2 …t n-1 occurs at the moment, the satellite network topology within a time slice is as follows figure 2 shown.

[0069] Each link follows a statistically independent failure probability. The status of each link and its corresponding bandwidth and link reliability are shown in Table 1. The state probability distribution, transmission time and packet loss rate of each edge are shown in Table 2. The QoS requirements of each service are shown in Table 3.

[0070] Table 1 Each link status and its corresponding bandwidth

[0071]

[0072] Table 2 Link state data

[0073]

[0074] Table 3 QoS requirements of e...

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Abstract

The invention discloses a QoS-based satellite network end-end communication reliability analysis method, comprising the following steps: analyzing service types and related indicators; analyzing link multi-states; establishing a QoS-based satellite network end-end communication reliability analysis Method; analysis of multipath transport end-to-end reliability. The present invention divides the link into multiple states, and different link states correspond to different link bandwidths and link reliability. On this basis, the network is analyzed to make it closer to the actual situation of satellite network links. The present invention fully considers the differences in network end-end reliability due to differences in QoS indicators caused by differences in service types, and divides services into three types. Different service types provide different QoS value ranges, which can better analyze transmission End‑end reliability of satellite networks for different services. Compared with single-path transmission, the present invention shortens end-to-end time delay, and improves reliability when files increase.

Description

technical field [0001] The invention relates to a reliability analysis technology for satellite network transmission, in particular to a reliability analysis method for satellite network end-to-end communication that comprehensively considers QoS (Quality of Service) indicators of various services. Background technique [0002] With the gradual improvement of the performance and business requirements of satellite communication systems, the system composition is becoming more and more complex, and the network behavior is also developing towards the direction of complexity. At the same time, because a considerable part of satellite communication business involves national security issues, the research on the reliability of its communication is particularly important. Early research on network reliability mainly started from the network topology to study the connectivity of the network, and did not consider the ability of the network to meet user needs. At present, most of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/185H04L12/26
CPCH04B7/18519H04B7/18521H04L43/0829H04L43/0852H04L43/0894
Inventor 蔡睿妍魏德宾石怀峰潘成胜潘芸
Owner DALIAN UNIV