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

A double-layer satellite network and segmented transmission technology, which is applied in the field of satellite communication, can solve problems such as high packet loss rate and long delay in information transmission, and achieve the effects of reducing packet loss rate, saving calculation amount, and improving accuracy

Active Publication Date: 2017-08-25
XIDIAN UNIV
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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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  • Double-layer satellite network routing method based on packet data pre-storage and segmented transmission
  • Double-layer satellite network routing method based on packet data pre-storage and segmented transmission
  • Double-layer satellite network routing method based on packet data pre-storage and segmented transmission

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[0033] Below in conjunction with accompanying drawing and specific embodiment, the present invention is described in further detail:

[0034] refer to figure 1 , a two-layer satellite network routing method based on packet data pre-storage and segmented transmission, comprising the following steps:

[0035]Step 1, the satellite network ground control center obtains group pre-stored data: the satellite network ground control center divides the low-level satellites into groups, and stores the obtained grouping data of each low-level satellite node at different times in each low-level satellite node, and at the same time Store the obtained management authority data of each high-level satellite node at different times in each high-level satellite node;

[0036] The ground control center of the satellite network adopts the switching strategy with the longest duration to divide the low-level satellites into groups, so as to obtain the pre-stored data in groups. The switching strate...

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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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/185H04L12/715
CPCH04B7/18521H04B7/18584H04L45/04
Inventor 刘彦明陈欢欢李小平王俊杰包云智
Owner XIDIAN UNIV
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