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Space-ground integrated hybrid routing method

A hybrid routing and world-based technology, applied in digital transmission systems, data exchange networks, electrical components, etc., can solve problems such as inability to automatically respond to link failures, inability to dynamically adapt to changes in network topology traffic, and integration of nodes to avoid The effect of longer routing time, avoiding network congestion, and expanding the prediction range

Active Publication Date: 2019-11-26
WUHAN UNIV
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Problems solved by technology

Therefore, they cannot dynamically adapt the network topology to adapt to changes in traffic, cannot automatically respond to link failures, and cannot integrate newly joined nodes in the network, which are essential features in future 5G dense deployments

Method used

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Embodiment Construction

[0045] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with examples. It should be understood that the specific examples described here are only used to explain the present invention, not to limit the present invention.

[0046] Such as figure 1 As shown, the embodiment of the present invention provides a space-ground integrated hybrid routing method, including the following steps:

[0047] Step 1. Calculate the link distance L between satellites in the orbit plane and the time-varying link distance D between satellites in the orbit, respectively, according to the orbital parameters of the satellites and the knowledge of spherical space geometry ij , to establish a time-varying two-way Manhattan satellite network model.

[0048] The time-varying two-way Manhattan satellite network model refers to the time-varying weighting process on the Manhattan net...

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Abstract

The invention provides a space-ground integrated hybrid routing method, which comprises the following steps of: calculating a link distance between satellites in an orbital plane and establishing a time-varying bidirectional Manhattan satellite network model based on a time-varying link distance between the satellites in the orbital plane; counting queue time delay between each satellite and a neighbor satellite node and queue time delay of a satellite-ground link between each satellite and a ground node; calculating a time interval which does not affect the network routing performance, and predicting link transmission time delay and queue time delay of the neighbor node and the next neighbor node in the time interval; calculating link time delay of satellite network routing according to asatellite routing algorithm based on predicted secondary neighbors; when the source terminal communicates with the destination terminal, predicting the queue delay of each link on the ground route based on a minimum mean square error prediction mechanism; under a 5G-satellite integrated architecture, selecting an upper satellite 5G-satellite node and a lower satellite 5G-satellite node with optimal paths by taking minimization of link total time delay of space-ground integrated hybrid routing as a target, and obtaining a set of space-ground integrated hybrid routing.

Description

technical field [0001] The invention relates to the technical field of space-ground integration, including a hybrid routing method of space-ground integration. Background technique [0002] 5G pursues ubiquitous coverage, ensuring uninterrupted traffic services from dense urban scenes to sparsely populated areas or in between. High-capacity dense cells combined with fiber optic backhaul provide the best performance in the hottest parts of the city. However, as users move away from urban centers, fiber deployment becomes scarce and expensive, so satellite technology will play a major role. In fact, satellite communications are considered the most affordable technology to meet 5G coverage requirements. [0003] To improve efficiency, 5G moves from a fixed solution that can adapt to different service needs to a flexible solution. However, today's 6 GHz wireless backhaul networks consist of fixed topologies designed through spectrum planning. Their ability to handle failure ...

Claims

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Application Information

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IPC IPC(8): H04L12/751H04L12/707H04B7/185H04L12/24H04L45/02H04L45/24
CPCH04L45/02H04L45/24H04L45/22H04B7/18521H04B7/18513H04L41/145
Inventor 李德识徐慧慧刘鸣柳黄威徐婵
Owner WUHAN UNIV
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