Double-layer satellite network routing method based on packet data pre-storage and segmented transmission

Abstract

The invention provides a double-layer satellite network routing method based on packet data pre-storage and segmented transmission, and aims to solve the technical problems of large information transmission delay and high packet loss rate due to incapability of adapting to frequent change of satellite network topology in the prior art. The method comprises the following implementation steps that: a satellite network ground control center acquires packet pre-stored data; lower-layer satellite groups to which lower-layer satellite nodes belong are partitioned; the satellite nodes in a plurality of lower-layer satellite groups establish a lower-layer satellite node routing table; higher-layer satellite nodes acquire lower-layer satellite group information; the higher-layer satellite nodes establish a higher-layer satellite node routing table; a user transmits a service data packet to a lower-layer satellite to which the user accesses; the lower-layer satellite nodes perform routing forwarding on the service data packet; and the higher-layer satellite nodes perform routing forwarding on the service data packet. Through adoption of the double-layer satellite network routing method, the speed and accuracy of information transmission forwarding are increased, and meanwhile the satellite calculated amount is reduced. The double-layer satellite network routing method can be applied to a double-layer satellite network.

Description

technical field [0001] The invention belongs to the technical field of satellite communication, and relates to a routing method for a double-layer satellite network, in particular to a routing method for a double-layer satellite network based on packet data pre-storage and segmented transmission, which can be used in a double-layer satellite communication network. Background technique [0002] In the field of communication, satellite communication has the advantages of all-weather, near real-time, not limited by geographical environment, and not limited by geographical distance. Local two-way communication services, and can obtain and quickly transmit large-capacity information in a wide area or even globally. Therefore, satellite networks with inter-satellite links can provide large-capacity, high-quality, high-reliability and diversified communication services for major applications such as aerospace, navigation, ocean communications, and emergency rescue in the future. A...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, and propose a double-layer satellite network routing method based on packet data pre-storage and segmented transmission, which is used to solve the existing problems in the prior art due to the inability to adapt to satellite network topology frequently The technical problems of large information transmission delay and high packet loss rate caused by the change

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