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Satellite network message exchange method and system, and sending and receiving method and device

A technology of satellite network and message exchange, which is applied in the field of Ethernet message carrying of satellite channels, and can solve problems such as message leakage

Active Publication Date: 2020-01-03
四川安迪科技实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because of the characteristics of the frequency division system, the frequency spectrum and bandwidth for sending and receiving are in one-to-one correspondence, so the data sent by the central station can be received by all remote stations, which causes some messages to leak to non-destination stations, involving security issues

Method used

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  • Satellite network message exchange method and system, and sending and receiving method and device
  • Satellite network message exchange method and system, and sending and receiving method and device
  • Satellite network message exchange method and system, and sending and receiving method and device

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Embodiment Construction

[0069] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0070] The relevant technical means of this application are applied to such as figure 1 In the star satellite network topology shown. All satellite devices in the satellite network have a device ID, which is used to represent the device and is unique in the entire network.

[0071] By encapsulating the original Ethernet message / response message with two new fields: destination ID and source ID.

[0072] The original Ethernet frame message format is as follows:

[0073] Destination MAC address(6) Source MAC address(6) Message Type(4) data part CRC(4)

[0074] After the source and destination IDs are added, the format of the Ethernet frame is as follows:

[0075] Destination ID(2) source ID Destination MAC address(6) Source MAC address(6) Message Type(4) data part CRC(4)

[0076] Process of ID encapsulation and decap...

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Abstract

The invention provides a satellite network message exchange method and system and a sending and receiving method and device. The method includes: packaging the source ID field and the destination ID field into a message containing a source MAC and a destination MAC, and sending the packaged message through a satellite link, wherein the source ID is the ID of the satellite device sending the message, and the destination ID is the ID corresponding to the destination MAC of the message in the MAC-ID learning table of the satellite device sending the message or a preset default 0xffff; when a message is received, updating the source MAC and source ID information pairs in the message to an MAC-ID learning table of the message, and judging whether a destination ID in the message is an ID of themessage or a preset default 0xffff; if not, discarding the message, and if so, de-encapsulating the message. According to the invention, the device needing message information exchange can effectivelyperform message exchange and identification, effectively restricts and isolates the transmission of the Ethernet message between satellite devices, and improves the security of satellite communication.

Description

technical field [0001] The invention relates to the Ethernet message bearing technology of the satellite channel, in particular to a satellite network message exchange method and system, a sending and receiving method and a device. Background technique [0002] In the star satellite frequency division system network, both the remote station and the central station work in the switching mode. Both the central station and the remote station are devices that send and receive multiple times, and the central station is responsible for relaying data messages from satellites. [0003] in such as figure 1 In the shown satellite network topology, the communication between remote station 1 and remote station 2 needs to be implemented through a central station. Due to the characteristics of the frequency division system, the frequency spectrum and bandwidth for sending and receiving are in one-to-one correspondence, so all remote stations can receive the data sent by the central stat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/185H04L12/935H04L29/06H04L49/111
CPCH04B7/1851H04B7/18558H04L49/3009H04L63/12
Inventor 靳年鑫
Owner 四川安迪科技实业有限公司
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