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Network coding based multipath routing method of double-layer satellite network

A double-layer satellite network and network coding technology, applied in the field of satellite network communication, can solve problems such as difficulty in meeting information service requirements, high probability of network congestion, accumulation of node delay, etc., to improve throughput and reliability, and compensate for high time The effect of changing gender and improving network performance

Active Publication Date: 2018-12-07
EAST CHINA NORMAL UNIVERSITY
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Problems solved by technology

[0004] The topology of the satellite network determines the number of inter-satellite links and the transmission path of data packets in the satellite network. At present, the single-layer satellite network composed of satellite nodes on a single orbit has a high probability of network blocking, poor invulnerability, and node Time delay accumulation and other factors have made it difficult to meet the growing demand for information services

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  • Network coding based multipath routing method of double-layer satellite network
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Embodiment Construction

[0055] 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.

[0056] The invention discloses a network coding-based double-layer satellite network multi-path routing method, which is characterized in that it comprises the following steps:

[0057] Step 1: Construct a satellite network topology with a double-layer satellite constellation, establish an inter-satellite link based on the characteristics of medium and low earth orbits, and determine the satellite network structure according to the relationship between the number of satellites and the capacity of the satellite network.

[0058] Specifically include the following steps:

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Abstract

The invention discloses a network coding based multipath routing method of a double-layer satellite network. The method comprises that a satellite network topology including double-layer satellite constellation is constructed, and a satellite network structure is determined according to relation between the number of satellites and the capacity of the satellite network; a network route is set according to the real-time sate of the satellite network, availability weights of an inter-satellite link and satellite nodes along the way are calculated between a source end node and a target end node,and a local network routing state in response to a routing request is obtained according to the availability weights; performance of the satellite communication network is optimized by combining network coding with multipath routing, and an effective link satisfying a service demand is established in the network; and according to a congestion condition of the satellite network as well as the availability weights of the satellite nodes and links therebetween, the throughput of the satellite network is improved. Thus, ground users can be covered widely via the MEO / LED double-layer satellite network topology structure, and the data transmission performance of the satellite network is improved.

Description

technical field [0001] The invention relates to the field of satellite network communication, in particular to a network coding-based double-layer satellite network multipath routing method. Background technique [0002] The satellite communication network provides diversified data transmission services for users scattered around the world, and it has great potential in the field of global communication services. The satellite communication network not only has good global coverage, but also can provide efficient and real-time data communication services. Therefore, the application of satellite communication network is of great significance to areas with inaccessible and harsh geographical environments. [0003] Based on the broad application prospects of satellite communication networks, the network routing algorithm designed for satellite communication networks with high performance and quality of service is an important topic in the field of satellite network communicatio...

Claims

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Application Information

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IPC IPC(8): H04L12/709H04L1/00H04B7/185H04L45/243
CPCH04B7/18521H04B7/18584H04B7/18586H04L1/0076H04L45/24
Inventor 徐文超姜萌杨艳琴杨虹刘彦博庞雨欣宁晓爽
Owner EAST CHINA NORMAL UNIVERSITY
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