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Spatial network routing method based on load awareness flow dynamic adaptation

A space network and traffic dynamic technology, applied in the field of space network, can solve the problems of different sensitivity of performance parameters, lack of scalability, difficulty in adapting to network topology maintenance methods, etc., and achieve the effect of avoiding jitter and efficient and reliable transmission

Active Publication Date: 2017-01-04
BEIJING INST OF SPACECRAFT SYST ENG
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Problems solved by technology

With the continuous expansion of network scale and the emergence of random space network nodes, this completely static network topology maintenance method will be difficult to adapt
[0007] (2) The evaluation of network performance by this method is to use the two parameters of business average arrival rate and propagation delay to obtain the load evaluation value of the node through comprehensive calculation, which is not scalable
In different space network application scenarios, the sensitivity to different performance parameters of network nodes is different, resulting in different evaluation methods for network node load performance, and it is difficult for this method to adapt to different application scenarios. objective evaluation of performance

Method used

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  • Spatial network routing method based on load awareness flow dynamic adaptation
  • Spatial network routing method based on load awareness flow dynamic adaptation
  • Spatial network routing method based on load awareness flow dynamic adaptation

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Embodiment

[0068] figure 1 The line-of-sight range of the three GEO satellites can be divided into three areas, namely AREA1, AREA3 and AREA5. AREA2 is the intersection range of G1 and G2 line-of-sight, and AREA2 is the cross-line range of G2 and G3 line-of-sight. Since the relative position of the GEO satellite node is fixed, the low-orbit LEO satellite node can calculate the information of the GEO satellite line-of-sight area and the duration information of the line-of-sight based on its own time and space position information.

[0069] When a low-orbit access satellite node enters AREA1, it will send a connection request Request to G1. The Request data content includes (node ​​ID information, the maximum length of the data to be transmitted), the node ID information is the unique identifier of the LEO satellite node in the space-based information network, and cannot be repeated; the maximum length of the data to be transmitted is in the subsequent connection process The maximum lengt...

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Abstract

The invention provides a spatial network routing method based on load awareness flow dynamic adaptation, and aims to ensure efficient and reliable transmission of data and stable running of a spatial network. The method comprises a dynamic access process of an access node and a load awareness process of a backbone node. Dynamic access control of a lightweight access node is realized by an access user identity authentication mechanism, and an overlapping region is covered with the backbone node. During data transmission in a current region, network access of a next region and continuous switching of data transmission are finished, so that jittering in a data transmission process is avoided. A node load and flow awareness mechanism is used, and a backbone node comprehensive flow processing capability value is obtained through fusion calculation and transmitted to the access node. The access node adaptively and dynamically adjusts a data transmission rate according to the value, so that efficient and reliable transmission of data and stable running of the spatial network are ensured.

Description

technical field [0001] The invention belongs to the technical field of space network, in particular to a space network routing method based on dynamic self-adaptation of load-aware flow. Background technique [0002] The space network uses advanced inter-satellite network technology to connect different types of spacecraft, low-altitude aircraft, and facilities of space management agencies on the ground, and then integrates with the ground Internet network to form an independent information acquisition system. The spatial information network with functions of integration, distribution, processing, transmission and application has more powerful processing capabilities and more direct processing methods. Space network has many advantages such as global coverage and simple access. It is widely used in resource detection, weather forecasting, emergency rescue, environment and disaster monitoring and other fields. It is considered by many researchers to be an important part of th...

Claims

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Application Information

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IPC IPC(8): H04L12/825H04W48/06
CPCH04L47/25H04W48/06
Inventor 阎冬郭坚汪路元何熊文顾明
Owner BEIJING INST OF SPACECRAFT SYST ENG
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