rdss communication transmission control method and system

Abstract

The present invention discloses a RDSS communication transmission control method and system, wherein the method includes the following steps: S10: the commander sends the Nth control frame to all subordinate terminals in a broadcast mode; S20: each subordinate terminal receives the Nth control frame control frame; S30: each subordinate terminal reads the value of the corresponding data bit in the communication flag area in the Nth control frame; S40: if the subordinate terminal reads the corresponding data in the communication flag area in the Nth control frame When the value of the bit is B, then the subordinate terminal sends the previous data frame to the commander; S50: the commander judges or reads the receiving status of the data frame sent by each subordinate terminal; S60: if the commander fails to receive the new In the data frame or the last data frame, the command plane sets the value of the data bit corresponding to the subordinate terminal to which the new data frame or the last data frame belongs to if it fails to receive the new data frame or the previous data frame in the communication flag area in the N+1th control frame. b. On the premise of saving Beidou communication channel resources, the reliability of RDSS communication is improved.

Description

technical field [0001] The invention relates to the field of satellite communication, in particular to an RDSS communication transmission control method and system. Background technique [0002] The Beidou satellite navigation system is a global satellite navigation system independently developed by China. It consists of three parts: the space segment, the ground segment and the user segment. , timing service, and short-message communication capability. It has preliminary regional navigation, positioning and timing capabilities, with a positioning accuracy of 10 meters, a velocity measurement accuracy of 0.2 m / s, and a timing accuracy of 10 nanoseconds. [0003] The Beidou short message function can be regarded as the "short message" that people usually use. Through the Beidou two-way communication function, the two-way briefing digital communication between users can be realized. At present, the Beidou card can support the message communication, among which the three-level ...

AI Technical Summary

Problems solved by technology

[0004] In the existing technology, in order to determine whether the Beidou RDSS communication is reliable, the method of retransmitting data is usually used to improve the reliability of the Beidou RDSS communication, but this will cause problems such as multiple transmissions, repeated transmissions, missing transmissions, etc., and repeated The way of sending data can neither guarantee the reliability of communication, but also occupy too much Beidou RDSS communication resources or bandwidth

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