Low-latency signaling and data wireless transmission method based on hierarchical redundancy mechanism
A technology of wireless transmission and redundant control, which is applied in the field of wireless data transmission and low-delay signaling, which can solve the problems of reducing the transmission delay of wireless signaling, large delay jitter, and insufficient reliability, so as to achieve the correct reception of information. Prolonged effect
Active Publication Date: 2020-04-10
XIDIAN UNIV
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[0006] The purpose of the present invention is to provide a low-delay signaling and data wireless transmission method based on a hierarchical redundancy mechanism, which solves the problem of large delay and jitter in the feedback retransmission technology, forward error correction technology and spread spectrum technology in the prior art. , long coding cycle and insufficient reliability, and reduce the transmission delay of wireless signaling as much as possible under the premise of ensuring reliability
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[0040] Step S1, the wireless device determines the target maximum transmission delay T and the target maximum packet loss rate P of wireless data, generates a set of error control methods, and traverses the error control of taking out N times of error control methods from the set of error control methods in the way of taking out and putting back Arrange the methods, arrange each error control method that does not repeat elements except the error-free control method to form a hierarchical redundancy control method set, and select the largest number of levels, the shortest hierarchical control delay, and packet loss from the hierarchical redundancy control method set. The hierarchical redundant control method with the lowest rate is used as the final hierarchical redundant control method;
[0041] Step S11, determine the target maximum transmission delay T and target maximum packet loss rate P of wireless data transmission; in this embodiment, the target maximum transmission dela...
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The invention discloses a wireless low-delay signal and data transmission method based on a hierarchical redundancy mechanism. By utilization of the real-time performance difference and the fault-tolerant capability difference of different error control technologies, the data processing time and the information sending time are reasonably arranged; multiple data messages having same effective information, progressively decreased real-time performances and progressively increased fault-tolerant capabilities are sent in a maximum allowable delay window; and the first correct receiving delay of data is reduced as much as possible. The wireless low-delay signal and data transmission method based on the hierarchical redundancy mechanism disclosed by the invention can be used for signal transmission in a high real-time system; and real-time signal data transmission from the microsecond delay to the millisecond delay can be realized.
Description
technical field [0001] The invention belongs to the technical field of wireless communication, and relates to a low-delay signaling and data wireless transmission method based on a hierarchical redundancy mechanism. Background technique [0002] In the electromechanical control system, the main control device needs to obtain the system status parameters in real time and issue control commands to fine-tune the controllable devices to ensure the stable operation of the system. Systems with high real-time requirements such as flight control put forward higher requirements for highly reliable and low-latency transmission of signaling data, requiring transmission delays of less than 10 milliseconds or even less than 5 milliseconds to ensure system stability. [0003] The wired cable transmission scheme has a stable channel environment and high reliability. However, the cable has disadvantages such as self-weight and distance correlation, easy entanglement, complicated layout, and...
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IPC IPC(8): H04L1/00H04L5/00
CPCH04L1/0041H04L5/0053
Inventor 权磊谢楷刘艳朱繁孙斌
Owner XIDIAN UNIV