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High-speed carrier ad hoc network data link end machine time synchronization method and system

A self-organizing network and time synchronization technology, applied in digital transmission systems, time division multiplexing systems, transmission systems, etc. The effect of slow convergence and robustness of solutions

Active Publication Date: 2021-07-09
中科南京移动通信与计算创新研究院
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Problems solved by technology

[0005] Purpose of the invention: To propose a high-speed carrier self-organizing network data link end-machine time synchronization method and system to solve the above-mentioned problems in the prior art and overcome the traditional master-slave fine synchronization robustness and poor anti-interference ability , also overcomes the problem of slow convergence speed of the traditional mutual synchronization

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  • High-speed carrier ad hoc network data link end machine time synchronization method and system

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Embodiment Construction

[0058] The present invention solves the problems of traditional master-slave synchronization robustness and poor anti-interference ability through a high-speed carrier self-organizing network data link end-machine time synchronization method and system, and also overcomes the slow convergence speed of traditional mutual synchronization The problem. In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0059] The applicant believes that in the process of hardware synchronization, using the GPS system as the clock source can quickly and efficiently achieve high-precision synchronization, but it has disadvantages such as high cost, lim...

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Abstract

The embodiment of the invention provides a high-speed carrier ad hoc network data link end machine time synchronization method and system, and the method comprises the steps: obtaining a main node through a competitive preferential mode after at least two nodes with clocks are powered on; using the main node as a reference clock source for coarse synchronization; enabling the main node to periodically send networking broadcast frames to the periphery; self-organizing the remaining nodes into a communication network according to the networking broadcast frame; enabling the reference clock source to broadcast a synchronous broadcast frame; enabling a node to be subjected to time synchronization to receive and analyze the synchronous broadcast frame; enabling the node to be subjected to time synchronization to adjust own absolute time according to the time delay in the analysis result to realize coarse synchronization; and finishing fine synchronization of time by adopting a mutual synchronization method according to the correction amount. According to the invention, the problems of poor robustness and interference resistance of traditional master-slave fine synchronization are solved, and the problem of slow convergence speed of traditional mutual synchronization is also overcome.

Description

technical field [0001] The invention relates to a high-speed carrier self-organizing network data link terminal time synchronization method and system, in particular to the technical field of signal and information processing. Background technique [0002] Time synchronization is also called clock synchronization. The purpose is to realize the synchronization of the local clocks of all nodes in the network. The whole process is to adjust the clocks of all nodes to align with the unified standard clock of the system. In a distributed non-centralized network, a global clock is maintained so that all time-related events in the entire system have a unified time reference point, the purpose is to ensure that all nodes send and receive messages logically correct in time Causal relationship. [0003] In the prior art, clock synchronization technologies in wireless ad-hoc networks are mainly divided into hardware synchronization and software synchronization. Among them, the hardwa...

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Application Information

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IPC IPC(8): H04L7/00H04J3/06
CPCH04L7/0012H04J3/0676Y02D30/70
Inventor 母洪强施渊籍周一青石晶林
Owner 中科南京移动通信与计算创新研究院
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