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Cross-layer routing method and communication system based on MEO/LEO double-layer satellite network

A double-layer satellite network and satellite technology, which is applied to the routing field of satellite networks, can solve the problem of uneven distribution of satellite transmission loads, and achieve the effects of reducing network topology complexity, reducing complex pressure, and improving resource utilization.

Pending Publication Date: 2021-08-13
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to provide a cross-layer routing method and system based on the MEO / LEO double-layer satellite network, to overcome the problem of coordinated transmission of the existing satellite network, and to solve the problem of uneven distribution of satellite transmission load

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  • Cross-layer routing method and communication system based on MEO/LEO double-layer satellite network
  • Cross-layer routing method and communication system based on MEO/LEO double-layer satellite network
  • Cross-layer routing method and communication system based on MEO/LEO double-layer satellite network

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[0037] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0038] The technical solutions in the present invention will be described in more detail below in conjunction with specific embodiments.

[0039] Step S1: Establish a MEO / LEO two-tier satellite network system model, and perform initial load balancing presets based on the global business traffic model; establish a MEO / LEO two-tier satellite network topology, such as figure 1It can be seen from the coverage zone parameters and topological structure of the satellite constellation that low-orbit LEO s...

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Abstract

The invention provides a cross-layer routing method and system based on an MEO / LEO double-layer satellite network, and aims to overcome the problem of cooperative transmission of an existing satellite network and solve the problem of uneven distribution of satellite transmission loads. The method mainly comprises the following steps: 1, establishing an MEO / LEO double-layer satellite network system model, and carrying out initial load balancing presetting according to a global service flow model; 2, dividing the LEO layer satellites into a plurality of control domains according to the coverage domain of the MEO layer satellites on the LEO layer satellites, and selecting a manager MEO satellite from each control domain; 3, establishing a network time delay model, calculating a routing table by a manager MEO satellite, distributing the routing table to an LEO layer, and executing a cross-layer routing algorithm; 4, enabling the satellite to continuously detect the load condition of the node by taking the t period as the period, and performing data transmission operation according to the load balancing forwarding model to realize load balancing. According to the method, different advantages of the middle-layer orbit satellites and the low-layer orbit satellites can be brought into full play, and the network topology complexity and the LEO layer satellite calculation pressure are reduced.

Description

technical field [0001] The present invention relates to a satellite network routing method and system, in particular to a cross-layer routing method and system based on MEO / LEO double-layer satellite network. Background technique [0002] The space-ground integrated information network (referred to as "space-ground network") is a broadband large-capacity network infrastructure formed by the fusion of satellite networks and terrestrial networks. The ground network refers to the earth's surface network composed of ground station network, mobile communication network and Internet. The satellite network consists of various types of spacecraft, including communication satellites (satellites with different orbits and communication tasks), information acquisition satellites (SRA, meteorology and earth observation), navigation satellites (Beidou, GPS), etc. For the huge potential of the satellite communication system, people hope that the space-ground integrated information transmi...

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Application Information

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IPC IPC(8): H04W28/08H04W40/02H04W84/06
CPCH04W28/08H04W40/02H04W84/06
Inventor 唐飞龙俞锦浩朱燕民俞嘉地陈龙刘嘉成
Owner SHANGHAI JIAO TONG UNIV
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