A method, device and equipment for improving clock synchronization accuracy

A clock synchronization and equipment technology, applied in the field of communication, can solve the problem of low clock synchronization accuracy

Active Publication Date: 2019-06-18
ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The object of the present invention is to provide a method, device, equipment and a computer-readable storage medium for improving clock synchronization accuracy to solve the problem of low clock synchronization accuracy

Method used

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  • A method, device and equipment for improving clock synchronization accuracy
  • A method, device and equipment for improving clock synchronization accuracy
  • A method, device and equipment for improving clock synchronization accuracy

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Experimental program
Comparison scheme
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Embodiment 1 Embodiment approach ， application ，，。， approach Embodiment 2

[0066] The implementation provided in Embodiment 1 implements clock synchronization by adjusting clock time. In practical applications, the cause of clock out-of-synchronization may be a difference in clock frequency in addition to clock time. Accordingly, the present application provides the second embodiment of the method for improving clock synchronization accuracy, see image 3 , embodiment two specifically includes:

[0067] Step 31: Determine whether the hardware interface of the slave device monitors the event message.

[0068] Step 32: If the hardware interface receives the event message, generate a first hardware time stamp.

[0069] Step 33: Obtain the second hardware time stamp generated by the master device in response to the event message.

[0070] Step 34: Calculate the transmission between the master device and the slave device according to the first hardware time stamp, the second hardware time stamp and the transmission time between the master device and the...

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PUM

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Abstract

The invention discloses a method for improving the clock synchronization precision. The method comprises the steps that whether or not an event message is monitored from a hardware interface of equipment is judged, if the event message is received, a first hardware timestamp is generated, and due to the fact that the delay of a physical layer for message transmission is very short, the precision of the hardware timestamp is very high; a second hardware timestamp generated for responding the event message by the main equipment is acquired, and the transmission delay between the main equipment and the slave equipment is calculated by means of the first hardware timestamp, the second hardware timestamp and the transmission time between the main equipment and the slave equipment, wherein it isobvious that the precision of the transmission delay calculated according to the timestamps with the high precision is also high; and the clock time of the slave equipment is adjusted according to the transmission delay, clock synchronization is completed, and the purpose of improving the clock synchronization precision is achieved. The invention further provides a device and equipment for improving the clock synchronization precision and a computer readable storage medium. The device, the equipment and the computer readable storage medium have the effect corresponding to that of the method.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method, device, equipment and a computer-readable storage medium for improving clock synchronization accuracy. Background technique [0002] With the advent of the digital age, distributed networks are increasingly widely used. A distributed network is formed by the interconnection of systems distributed in different locations. Most systems use local oscillators to maintain their own concept of time. Many applications require two independent devices to work in a synchronous manner. [0003] If all devices are interconnected by a communication network such as Ethernet, the devices can exchange time messages over the network and dynamically adjust their respective slave clocks relative to the master clock. [0004] In the prior art, a clock synchronization protocol - Network Time Protocol NTP, is that each device adjusts its clock according to the time information it obtains fr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J3/06
CPCH04J3/0661H04J3/0676
Inventor 杨子庆
Owner ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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