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NGEO satellite routing algorithm based on fuzzy theory

A technology of fuzzy theory and fuzzy processing, which is applied in the field of satellite network routing, can solve the problems of accurately describing the congestion of satellite nodes, singleness evaluation standards, low throughput and packet loss rate, etc., so as to avoid singleness and unsatisfactory load Balance, optimize the bypass method, and achieve the effect of load balancing

Inactive Publication Date: 2015-12-02
BEIJING INST OF SPACECRAFT SYST ENG
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Problems solved by technology

[0006] To sum up, the existing NGEO (Non-Geostationary Orbit) satellite network routing mechanism, its singleness evaluation standard, cannot accurately describe the congestion situation of satellite nodes, and at the same time, many routing algorithms cannot meet the requirements of load balancing. Provide efficient, dynamic, load-balanced routing technology in inter-satellite communication, reduce end-to-end delay, higher throughput and lower packet loss rate, which is the realization of seamless access technology through the global satellite system and the Internet in the future pressing issues

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  • NGEO satellite routing algorithm based on fuzzy theory
  • NGEO satellite routing algorithm based on fuzzy theory
  • NGEO satellite routing algorithm based on fuzzy theory

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Embodiment Construction

[0036] Embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings:

[0037] A NGEO satellite routing algorithm based on fuzzy theory, which is applied to NGEO (non-geostationary orbit) satellite network with nodes moving at high speed. The NGEO satellite network model is an iridium-like network, and its LEO iridium satellite constellation consists of 6 orbits, with 11 satellites on each orbit and an orbital inclination of 90 degrees. image 3 The case of inter-satellite links is given. In this constellation, each satellite has four inter-satellite links (ISL), including links in two orbital planes and inter-orbital links. Usually, a ground station terminal can be located in different satellite coverage areas, and can communicate with several satellites at the same time. However, in general, the ground station chooses the satellite with the largest remaining coverage time as its manager. In addition, this type of c...

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Abstract

The invention relates to an NGEO satellite routing algorithm based on fuzzy theory, characterized by comprising: employing a fuzzy theory method to calculate an FSCI according to satellite node information; calculating the determine index of a routing algorithm, and finding a DSP according to a DSP routing algorithm; in case of satellite congestion, a satellite notifying adjacent satellites of FSCI signaling information; after the satellites receiving the FSCI signaling information, detouring according to the detouring strategy of an improved ELB algorithm and priorities of different packages. The NGEO satellite routing algorithm has a reasonable design, uses the fuzzy theory to obtain the FSCI and the detouring strategy, is simple to compute, meanwhile well distributes flow, and realizes satellite constellation load balancing. Compared with a traditional DSP (Dijkstra DSP algorithm) and an ELB (displaying load balancing) routing algorithm, the NGEO satellite routing algorithm has remarkably improved performance indexes.

Description

technical field [0001] The invention belongs to the technical field of satellite network routing, in particular to an NGEO satellite routing algorithm based on fuzzy theory. Background technique [0002] With the vigorous development of wireless communication technology and the Internet, the network has become an essential infrastructure for people to obtain and exchange information in their daily lives, and people increasingly need infrastructure that provides Internet access services at any place and any time. Building a global Internet environment with seamless access is an inevitable trend of future network development, and it is also a very important link in the military strategic deployment of major countries in the world. Because 70% of the earth's surface is ocean, it is impossible to establish ground cellular mobile communication, and satellite communication has always been valued by people in the process of communication development due to its inherent advantages s...

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Application Information

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IPC IPC(8): H04L12/721H04L12/803
CPCH04L45/12H04L47/122H04L47/125
Inventor 李超何善宝李振东吴阳璞姜竹青刘崇华顾亚楠
Owner BEIJING INST OF SPACECRAFT SYST ENG
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