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Satellite network end-to-end communication reliability analysis method based on QoS

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, reliability reduction, end-to-end reliability of single-path transmission, etc. question

Active Publication Date: 2020-01-31
DALIAN UNIV
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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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  • Satellite network end-to-end communication reliability analysis method based on QoS
  • Satellite network end-to-end communication reliability analysis method based on QoS
  • Satellite network end-to-end communication reliability analysis method based on QoS

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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 structure remains unchanged, and the switching of links and the change of network topology are only at time point t 0 ,t 1 ,t 2 ...t n-1 occurs at any time, the satellite network topology within a time slice is as follows figure 2 shown.

[0069] Each link follows a statistically independent failure probability. The state 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. Table 3 shows the QoS requirements of each service.

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

[0071]

[0072] Table 2 link state data

[0073]

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

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Abstract

The invention discloses a satellite network end-to-end communication reliability analysis method based on QoS. The method comprises the following steps: analyzing a service type and related indexes; analyzing multiple states of the link; establishing a satellite network end-end communication reliability analysis method based on QoS; and analyzing the multi-path transmission end-end reliability. According to the invention, a link is divided into a plurality of states, and different link states correspond to link bandwidths and link reliability of different sizes. On this basis, the network is analyzed to be closer to the actual situation of a satellite network link. According to the method, the difference of network end-end reliability caused by QoS index difference due to service type difference is fully considered, the services are divided into three types, different QoS value ranges are provided for different service types, and the satellite network end-end reliability for transmitting different services can be better analyzed. Compared with single-path transmission, the method has the advantages that the end-to-end delay is shortened, and the reliability is improved when the file is increased.

Description

technical field [0001] The invention relates to a reliability analysis technology for satellite network transmission, in particular to a satellite network end-to-end communication reliability analysis method which comprehensively considers various service QoS (Quality of Service) indicators. Background technique [0002] With the gradual improvement of people's performance and business requirements for satellite communication systems, the system composition is becoming more and more complex, and the network behavior is also developing in the direction of complexity. At the same time, because a considerable part of the satellite communication business involves national security issues, the reliability research of its communication is particularly important. Early studies on network reliability were mainly based on network topology to study network connectivity, without considering the network's ability to fulfill user needs. At present, most of the end-to-end reliability alg...

Claims

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Application Information

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Patent Type & Authority Applications(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