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Synchronous comparison, selection and following technical method based on VoIP ground-air voice communication

A voice communication and comparison technology, applied in the transmission system, electrical components, etc., can solve the problems of aggravating the workload and work pressure of maintenance personnel, improve bandwidth utilization and transmission capacity, improve frequency utilization, and ensure wireless channels quality effect

Active Publication Date: 2020-11-20
CHENGDUSCEON TECH
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Problems solved by technology

Therefore, in actual work, it is necessary for monitoring and maintenance personnel to continuously summarize, debug, and repeatedly set parameters according to actual needs in order to find the most ideal working state of the comparator and make the comparator truly play its important role, which undoubtedly increases maintenance. Staff workload and work pressure

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  • Synchronous comparison, selection and following technical method based on VoIP ground-air voice communication
  • Synchronous comparison, selection and following technical method based on VoIP ground-air voice communication
  • Synchronous comparison, selection and following technical method based on VoIP ground-air voice communication

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Embodiment Construction

[0049] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation of the present invention will now be described with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0050] A method for synchronous selection and follow-up based on VoIP ground-air voice communication, comprising the following steps:

[0051] S1. Use the SIP protocol to establish a SIP communication connection between the control seat and the radio gateway or VoIP station, so that the wireless channel enters the monitoring or commanding mode, and selects the comparison method in the SDP;

[0052] S2. The control seat and the radio gateway or VoIP station exchange RTP messages, use the additional function block extended by the RTP header field to detect the ground-air voice delay, and use the voice delay detection result to perform synchronous ...

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Abstract

The invention discloses a synchronous comparison, selection and following method based on VoIP ground-air voice communication, which is based on a soft switch technology of an SIP and adopts a distributed architecture to control each VHF station. When the same-frequency different-address stations receive voice data to ground sent by pilots, the control seats start a comparison and selection function and select voice with a good effect optimally, a manual selection mode and an automatic selection mode are adopted for transmission after comparison and selection, a channel with the best voice quality is selected preferentially for transmission, and therefore the ground-air voice communication quality is guaranteed. By means of the method, it is possible to obtain a, the control seats are directly communicated with the very high frequency stations; the comparison and selection operation is completed at the control seat end through cooperation of the control seat and the VHF station, no central switching node exists, normal work of other parts of the system is not affected by a single-point fault, a manual selection mode and an automatic selection mode are provided for transmission after comparison and selection, the time range is set, and the wireless channel quality is ensured while the system is more flexible.

Description

technical field [0001] The invention relates to the technical field of IP network voice communication, in particular to a method for synchronous selection and follow-up based on VoIP ground-air voice communication. Background technique [0002] In the air traffic control system, controllers and pilots transmit flight-related instruction messages through ground-air voice communication. At present, ground-air voice communication mainly adopts VHF communication. In order to solve the line-of-sight propagation limitation and terrain influence of VHF communication, improve the reliability of ground-air voice communication, and ensure flight safety, stations with the same frequency and different locations are usually used. Effectively cover the entire communication field. At the same time, with the rapid development of the civil aviation transportation industry, the current number of flights is increasing rapidly, and the demand for the number of VHF stations is also increasing. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06
CPCH04L65/80H04L65/1069H04L65/1066H04L65/1083H04L65/4061H04L65/1104H04L65/65Y02D30/70
Inventor 彭毅李娟胡皓
Owner CHENGDUSCEON TECH
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