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Double-layer topology routing method based on satellite communication network design

A technology of network design and satellite communication, which is applied in the field of satellite network communication, can solve problems such as inter-satellite link instability, network communication delay, increased delay jitter, etc., and achieve the effect of improving throughput and transmission efficiency

Inactive Publication Date: 2017-05-31
EAST CHINA NORMAL UNIV +1
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Problems solved by technology

One of the biggest challenges facing the satellite communication network is the time-varying network topology formed by the satellite’s own orbital operation. The time-varying nature of the satellite network topology directly leads to the instability of the inter-satellite link and the increase of network communication delay. Increased delay jitter

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  • Double-layer topology routing method based on satellite communication network design
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  • Double-layer topology routing method based on satellite communication network design

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Embodiment Construction

[0040] The present invention will be further described in detail in conjunction with the following specific embodiments and accompanying drawings. The process, conditions, experimental methods, etc. for implementing the present invention, except for the content specifically mentioned below, are common knowledge and common knowledge in this field, and the present invention has no special limitation content.

[0041] The core content of the present invention is to transmit the data service in the time-varying satellite network topology according to the characteristics of the GEO / LEO double-layer satellite network, combined with the geographical coverage of the geosynchronous orbit and the low propagation delay of the low orbit. By comprehensively considering the region, network performance and satellite attributes, the routing path that meets the business needs is obtained, and the performance of the satellite communication network is optimized.

[0042] The two-tier satellite net...

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Abstract

The invention discloses a double-layer topology routing method based on a satellite communication network design. The method comprises the steps of: constructing a double-layer satellite network constellation system, grouping satellites, calculating a routing path in a geosynchronous orbit and a low earth orbit, and assessing the performance of inter-satellite link routing via end-to-end delay and packet loss rate of data sent via the routing path; calculating a valid link and an availability weight of a satellite network according to the geographic position of a satellite node, the number of hops required by a source-to-destination calculation path and the congestion situation of the inter-satellite link; calculating the total cast for inter-satellite link data transmission in combination with the weight of a low earth orbit satellite initial calculation link and the availability weight of the source-to-destination satellite node; and screening a geosynchronous orbit satellite meeting the service requirement according to the business of low earth orbit satellites and the complexity of the routing path to participate in data transmission. The method can establish a valid path and balance the data transmission demand and the end-to-end delay, thereby optimizing the network performance.

Description

technical field [0001] The invention relates to the field of satellite network communication, in particular to a double-layer topology routing method based on satellite communication network design. Background technique [0002] Satellite networks are widely used in military, commercial and personal communications due to their global coverage and high data transmission efficiency. The use of satellite networks for data transmission can reduce the communication burden of ground nodes. Satellites have good on-board data processing and forwarding capabilities, and the use of inter-satellite links can complete fast and accurate transmission of data services. One of the biggest challenges facing the satellite communication network is the time-varying network topology formed by the satellite's own orbital operation. The time-varying nature of the satellite network topology directly leads to the instability of the inter-satellite link and the increase of network communication delay...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/02H04W40/12H04B7/185H04B7/19
CPCH04W40/02H04B7/18513H04B7/18519H04B7/18521H04B7/19H04W40/12
Inventor 姜萌徐文超杨艳琴徐咏明
Owner EAST CHINA NORMAL UNIV
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