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An intelligent autonomous time calibration method and system for a satellite wireless communication network

A technology of wireless communication network and self-calibration, which is applied in the field of space communication, can solve the problems of undiscovered wireless communication time-calibration method application research, round-trip time delay asymmetry, time delay fluctuation, etc., to achieve a wide range of applications and realize time synchronization , to avoid the effect of frequent intervention

Active Publication Date: 2022-04-12
BEIJING INST OF CONTROL ENG
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Problems solved by technology

However, in a wireless communication system, due to the large communication delay, large fluctuations in delay, and asymmetric round-trip delay, it is impossible to achieve clock synchronization through the above method
At present, there is no method to solve the wireless time adjustment from the application layer, and there is no research on the application of related wireless communication time adjustment methods on satellites.

Method used

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  • An intelligent autonomous time calibration method and system for a satellite wireless communication network
  • An intelligent autonomous time calibration method and system for a satellite wireless communication network
  • An intelligent autonomous time calibration method and system for a satellite wireless communication network

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Embodiment Construction

[0043] The present invention will be further explained and illustrated below in conjunction with the accompanying drawings and specific embodiments.

[0044] Such as figure 1 As shown, the satellite wireless communication network consists of a main device and multiple sub-devices. The information exchange between devices is only through wireless communication. Both the main device and the sub-devices have separate timing clocks, but the time scales of all devices are different (that is, time out of sync). Such as figure 2 As shown, the present invention proposes an intelligent autonomous time calibration method, through which the master device corrects the time of each sub-device, and realizes the time synchronization between the master device and each sub-device. The method includes three steps: 1) testing the characteristic value of the time delay of the wireless link, 2) self-optimizing the time delay through a certain algorithm, and 3) completing the time correction thr...

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Abstract

The invention discloses an intelligent and autonomous time calibration method and system for a satellite wireless communication network, belonging to the technical field of space communication. The invention is aimed at the satellite wireless communication network design, and can adapt to the wireless communication characteristics of large wireless delay, asymmetric communication delay, and large delay fluctuation. The timing accuracy of the communication network avoids the frequent intervention of the ground flight control through the completely autonomous algorithm on the star.

Description

technical field [0001] The invention relates to an intelligent autonomous time correction method and system for a satellite wireless communication network, belonging to the technical field of space communication. Background technique [0002] With the maturity of wireless technology, wireless communication has begun to be applied to aerospace and other military fields. In these fields, there are high requirements for data synchronization and reliability, and high requirements for operation autonomy. The traditional data acquisition interfaces on the satellite are RS422 serial port, 1553B bus, CAN bus and other wired communication interfaces. The wired communication interface is easy to clock synchronization. On the one hand, the time delay of wired communication is small and fixed, and the data transmission time can be predicted (on the order of microseconds). However, in a wireless communication system, due to the large communication delay, large fluctuations in delay, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/185H04W24/08H04W56/00
CPCH04B7/18519H04B7/18517H04W24/08H04W56/001
Inventor 郭朝礼郎燕张锦江王妍张迎发蔡彪蒋金哲冯帅牛剑
Owner BEIJING INST OF CONTROL ENG
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