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Space-ground integrated network dynamic and static hybrid routing method

A hybrid routing, dynamic and static technology, applied in the field of satellite measurement and control network communication protocols, can solve the problems of out-of-order arrival of TCP connection data, out-of-order data packets, etc., and achieve the effect of reducing processing overhead, solving computing resources, and reducing resource consumption.

Active Publication Date: 2019-11-22
10TH RES INST OF CETC
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Multi-path routing can make full use of network bandwidth and improve network throughput, but multi-path routing will cause out-of-order arrival of TCP connection data
In addition, the star-to-ground switching in the low-orbit satellite network will also cause data packet disorder

Method used

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  • Space-ground integrated network dynamic and static hybrid routing method

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Embodiment Construction

[0013] refer to figure 1 . According to the present invention, when entering the static routing stage, the gateway station sends the satellite-based node movement trajectory information to the ground operation and maintenance management and control center, initiates a routing request, and obtains the satellite-based node movement trajectory information; the operation and maintenance management and control center adopts a time-virtualized routing algorithm, Carry out time slice division, construct virtual topology map, create original routing table, merge and simplify the same routing table, and add routing table to each satellite-based node; satellite-based node responds to routing requests, accepts routing requests, and performs routing requests in business data When the packet arrives, use the existing routing table for routing; enter the dynamic routing stage, after the on-star node accepts the task, build the task route according to the static routing table, obtain the on-...

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Abstract

The invention discloses a space-ground integrated network dynamic-static hybrid routing method, and aims to provide a dynamic-static integrated hybrid routing method which adapts to the characteristics of continuous dynamic change of space-ground integrated network topology, limited on-satellite load capacity of nodes, long inter-satellite link transmission time delay, unbalanced distribution of carried data flow and the like. According to the technical scheme, the method comprises the steps that a static route sends motion trail information of a satellite-based node to a ground operation andmaintenance management and control center, a routing request is initiated, and the motion trail information of the satellite-based node is obtained; the operation and maintenance management and control center performs time slice division, virtual topological graph construction and original routing table creation by adopting a time virtualization routing algorithm; and after the satellite-based node responds to the routing request and accepts the task, a task route is constructed according to the static routing table, an on-satellite load task is obtained, whether the sending of the data packetsucceeds or not is judged, if the packet sending fails, the route is dynamically reconstructed by adopting a DSR routing algorithm, and if the sending of the data packet succeeds, the transmission ofthe data packet is finished.

Description

technical field [0001] The invention relates to the technical field of satellite measurement and control network communication protocols, in particular to a dynamic and static hybrid routing method that can be used in a space-ground integrated network to meet the data service transmission of high and low orbit satellite nodes. Background technique [0002] Due to the limitations of the ground network and the inability of the traditional network to achieve true global coverage, combined with the small delay of the ground network and the wide coverage of the satellite network, an air-space-ground integrated hybrid network combining the ground network and the space network is formed. The air-space-ground integrated network is interconnected by physical transmission technologies such as wireless networks. The backbone nodes and links are relatively fixed, the transmission delay is short, and the changes in time and space of the links are small. [0003] The end-to-end data trans...

Claims

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Application Information

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IPC IPC(8): H04L12/721H04L12/751H04L12/741H04L12/707H04L12/705H04L12/703H04B7/185H04L45/02H04L45/18H04L45/24H04L45/28H04L45/74
CPCH04L45/14H04L45/02H04L45/745H04L45/24H04L45/18H04L45/28H04L45/22H04B7/18521H04B7/18513
Inventor 李望刘田李婷陶孙杰
Owner 10TH RES INST OF CETC
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