Method and system for achieving long file transfer on basis of short message communication function of Beidou first-generation satellite

A communication function, a technology for file transmission, applied in transmission systems, radio transmission systems, error prevention/detection using return channels, etc., can solve problems such as loss of short messages, inability to transmit long messages, etc.

Inactive Publication Date: 2018-07-20
深圳市首欣通达科技有限公司
View PDF5 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current Beidou short message system can only transmit more than 70 bytes of content at a time, and cannot transmit long messages, documents, audio, video and other files. Moreover, the current Beidou short ...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] This embodiment provides a system for transmitting long files based on the short-message communication function of Beidou first-generation satellites, which includes a sending end and a receiving end.

[0036] The sending end includes a file splitting module, a data packet packaging module, a data packet sending module, a retransmission request processing module and a temporary storage module.

[0037] The file splitting module is suitable for splitting the file to be sent into several content segments smaller than a preset length. In this embodiment, the length of the content segment is smaller than 60 bytes.

[0038] The data packet packaging module is suitable for adding a preset data frame header to each content segment to form a data packet. The preset data frame header contains information on the total number of packets and the current packet number. Of course, it can also include The header features identification fields such as "$DATA" and length information for...

Embodiment 2

[0050] This embodiment provides a method for transmitting long files based on the short message communication function of Beidou first-generation satellites, including the following steps:

[0051] a. The sending end splits the file to be sent into several content segments smaller than the preset length. In this embodiment, the length of the content segment is less than 60 bytes. Add a preset data frame header to each content segment to form a data packet. The preset data frame header contains information on the total number of packets and the current packet number. Of course, it can also include a header feature identification field for indicating that the content is valid, such as "$DATA" and length information for the total length from the frame header to the end of the content. Preferably, the length of the data packet does not exceed 78 bytes.

[0052] b. All the data packets to be sent are formed into a queue of data packets to be sent.

[0053] c. Forward the queue of...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a method and system which are used for achieving long file transfer on the basis of a short message communication function of a Beidou first-generation satellite and achievedthrough the steps that a to-be-sent file is split into a plurality of content segments with the length less than a preset length, the content segments are added with preset data frame heads to form data packets, then the data packets are forwarded to a receiver through the satellite, and after receiving all the data packets, the receiver conducts packet splicing processing and generates a file. According to the method and system, by means of splitting and integration of the file, texts, voice and video files can be transferred through a Beidou short message system.

Description

technical field [0001] The invention relates to the technical field of satellite-based communication, in particular to a method and system for transmitting long files based on the short-message communication function of Beidou first-generation satellites. Background technique [0002] "Beidou-1" is an all-weather, regional satellite positioning system that uses geosynchronous satellites to provide users with fast positioning, short digital message communication and timing services. In the case of mobile communication interruption, the Beidou short message system can be used to transmit short digital messages, which are widely used in disaster relief, marine, forest fire prevention and other fields. However, the current Beidou short message system can only transmit more than 70 bytes of content at a time, and cannot transmit long messages, documents, audio, video and other files. Moreover, the current Beidou short message system is limited by the power of the transmitting equ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H04L1/18H04L29/06H04L29/08H04B7/185
CPCH04B7/18513H04L1/18H04L63/0428H04L67/06H04L67/565
Inventor 邓友强
Owner 深圳市首欣通达科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap