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A Space Information Network Space Layer Controller Election Algorithm

A technology of space information network and controller, applied in the field of satellite communication

Active Publication Date: 2020-08-11
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
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Problems solved by technology

Traditional IP-based connectionless networks can only provide "best effort delivery" services, in order to meet the QoS requirements of multimedia business data transmission

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  • A Space Information Network Space Layer Controller Election Algorithm
  • A Space Information Network Space Layer Controller Election Algorithm
  • A Space Information Network Space Layer Controller Election Algorithm

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Embodiment Construction

[0032] The present invention is described in further detail now in conjunction with accompanying drawing.

[0033] 1. Layered Architecture of Spatial Information Network

[0034] The space information network is divided into three layers, from top to bottom is the space layer, the adjacent space layer, and the ground layer. The space layer is the single-layer LEO satellite constellation of the Iridium system, and its characteristic is that the network topology changes with time and the change presents a certain periodicity. Therefore, the controller node in this layer should be selected in combination with the change of the cycle. The adjacent space layer is high-altitude hot air balloons, airships and other equipment. Its characteristic is that the network topology also changes with time, but it is also uncertain. Various weather will affect its position. Its controller nodes need to monitor the general , and all communication nodes in this layer are also monitored by the c...

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Abstract

The invention discloses an election algorithm for a space layer controller of a space information network. First, each satellite node checks its own state, and releases its load degree value and the hop number information of other satellites; considering the load degree and the hop number comprehensively, the load degree is selected Light and one hop, two hops as many nodes as possible, determine the controller; publish the information of each regional controller satellite, notify to each controller node satellite, and then enter the next cycle; the controller in the previous cycle Node satellite numbers are put into several cache areas; satellites directly connected to controller node satellites are added to the cache area to which the controller satellite belongs. The invention divides the overall space information network into space layers, which are adjacent to the space layer and the ground layer, so as to ensure that the transmission of the controller between layers is minimized.

Description

technical field [0001] The invention belongs to the technical field of satellite communication, and relates to an election algorithm for a space layer controller of a space information network. Background technique [0002] Compared with the traditional ground information network, the spatial information network is a network with a large scale and complex structure. The topological structure of the space information network changes periodically. The network nodes in the space information network are composed of various aircrafts, and their spatial positions are not fixed, and the information links between the nodes in the network are not fixed. Spacecraft-type aircraft operate stably, have their own orbits, and their mutual links are also predictable, but near-space vehicles are indeed unstable, and unpredictable interruptions will occur. At the same time, the space information network contains different communication protocols. The connection-oriented spatial information ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24H04L12/751H04B7/185H04L45/02
CPCH04B7/18519H04L41/12H04L45/02
Inventor 孙力娟王池韩崇周剑王娟郭剑肖甫王汝传
Owner NANJING UNIV OF POSTS & TELECOMM
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