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Event-triggered satellite routing load balancing method

A load-balancing and event-triggered technology, applied in the field of communication, can solve the problems of large satellite storage space, unable to handle network congestion and pressure well, and achieve the effect of balancing network load, improving the network's ability to cope with congestion, and saving storage space

Active Publication Date: 2021-04-02
XIDIAN UNIV
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

However, the disadvantage of this method is that since the satellite needs to store the routing table in all time slices, it will put a greater pressure on the storage space on the satellite.
The disadvantage of this method is that when the network congestion is serious, because the satellite stores the forwarded data in the public queue and waits for a long time, it cannot handle the network congestion well.

Method used

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  • Event-triggered satellite routing load balancing method
  • Event-triggered satellite routing load balancing method
  • Event-triggered satellite routing load balancing method

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Embodiment Construction

[0048] specific implementation plan

[0049] The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings.

[0050] Refer to attached figure 1 , the satellite network used in the embodiment of the present invention adopts a near-polar-orbit constellation as a scenario. Satellites on both sides of the reverse slot do not establish connections, and all satellites in the orbit where satellite a is located and all satellites in the orbit where satellite b is located do not establish inter-orbit connections. When the two adjacent satellites in the orbit move to the polar circle with a latitude greater than 70°, the two adjacent satellites in the orbit will break the inter-orbit connection. For example, when the c star and d star are both in the polar circle, the orbit The inter-orbit link is broken, and when one of the satellites leaves the polar circle, the inter-orbit connection is re-established, such as the ...

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Abstract

The invention discloses an event-triggered satellite routing load balancing method. The specific implementation steps are as follows: when the satellite routes the received data packets, firstly perceive the change of the on-off state of the inter-satellite link in the whole network pre-saved by the satellite , to trigger the update of the routing table, and generate the routing table with the shortest and second shortest paths; When the heavy load is not available, the overload link information is flooded to the whole network, triggering other satellites in the whole network to update the route; finally, the next hop is determined for the data packets received by the satellite through the detour next hop strategy. The invention effectively saves the storage space, and can balance the network load according to the change of the link state, and deal with the overloaded link in time.

Description

technical field [0001] The invention belongs to the technical field of communication, and further relates to a load balancing method suitable for inter-satellite routing in the technical field of low-orbit satellite communication network. The invention can effectively balance the load of the satellite network and deal with the congestion in time when the satellite routes the received data packets. Background technique [0002] The backbone nodes in the low-orbit LEO satellite network are all low-orbit high-speed moving satellites, and the network topology is in a state of continuous and high-speed change. Due to the extremely complex space environment in which the satellite network is located, the size, data processing and storage capabilities of on-board equipment are limited. On the other hand, due to the uneven distribution of users in global regions, the dense population near the equator has a greater demand, while the polar regions and ocean regions have less demand fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/803H04L12/707H04L12/721H04B7/185H04L45/24
Inventor 张奭张悦张冰齐晓鑫薛晨岚邱智亮
Owner XIDIAN UNIV
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