Multi-point data communication method based on Beidou short message and system thereof

A Beidou short message and data communication technology, which is applied in the field of multipoint data communication methods and systems based on Beidou short messages, can solve the problems of not providing communication channels, restrictions, and that data packets cannot be unpacked and grouped. To achieve the effect of good communication reliability and promotion ability, and improve reliability

Pending Publication Date: 2021-11-19
北京星网船电科技有限公司
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Problems solved by technology

However, the device only sends short messages, regardless of whether the receiver has received the short messages, and cannot unpack and group data packets exceeding 72 bytes, and the short messages of seventeen cards arrive There is no sequence of time, and the order of sending short messages of each card is also random
Therefore, the device only provides a communication channel, but does not provide a reliable and effective communication channel, which has great limitations in actual use

Method used

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  • Multi-point data communication method based on Beidou short message and system thereof
  • Multi-point data communication method based on Beidou short message and system thereof
  • Multi-point data communication method based on Beidou short message and system thereof

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Embodiment Construction

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0034] see Figure 1-2 , the embodiment of the present invention provides a multi-point data communication system based on Beidou short message, including a plurality of Beidou multi-card devices with data connection, any Beidou multi-card device as a communication point, any of the communication points includes:

[0035] Management layer 1 is used for timeout management and response message sending and receiving processing for data packets to be sent or recei...

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Abstract

The invention discloses a multi-point data communication method based on Beidou short messages and a system thereof, and the method comprises the steps: enabling a transmitting end of any communication point to split a data packet into one or more short messages according to the length of the data packet in a to-be-transmitted data cache region, and adding an identifier to the short message, enabling the sending end to send the short messages obtained by splitting the data packet to a specified communication point in sequence according to a preset sending interval; enabling the receiving end of the specified communication point to send a response message to the sending end after completely receiving one data packet; after receiving the response message, enabling the sending end to clear the data packet in a to-be-sent data cache region; and if the sending end does not receive the response message and the sending is overtime, re-sending the corresponding data packet. According to the invention, correct transmission of the long data packet is ensured; and the problem of crosstalk between data packets caused by a spatial multipath effect is solved, and the communication reliability is relatively good.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a method and system for multipoint data communication based on Beidou short messages. Background technique [0002] At present, with the development of unmanned technology, various unmanned equipment such as unmanned ships and unmanned vehicles have been put into use one after another. In the case of limited coverage area of ​​general communication equipment, it is urgent to build a set that can transmit long distances and cover a wide range. , Economical, reliable and stable wireless communication system. [0003] The Beidou satellite navigation system is a satellite navigation system with independent intellectual property rights in my country. Its two-way short-message communication function can provide highly reliable communication channels for various users all-weather and all-time within the service range. In the vast unmanned areas that cannot be covered by other mean...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/029H04W76/25H04W84/06
Inventor 郑志成刘言李自强吕波余华军于加华
Owner 北京星网船电科技有限公司
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