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Clock synchronizing method for NTP network and PTP network

A technology of clock synchronization and network time protocol, which is applied in the field of Internet communication, can solve problems such as inability to realize inter-network interconnection and clock synchronization, and achieve the effect of improving accuracy and saving costs

Inactive Publication Date: 2012-10-03
HARBIN INST OF TECH
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  • Description
  • Claims
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Problems solved by technology

[0006] The invention provides a clock synchronization method between an NTP network and a PTP network, which is used to solve the problem that the clock synchronization between the NTP network and the PTP network cannot be realized in the prior art, and the interconnection between the networks cannot be realized

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  • Clock synchronizing method for NTP network and PTP network
  • Clock synchronizing method for NTP network and PTP network
  • Clock synchronizing method for NTP network and PTP network

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Embodiment Construction

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0025] In order to solve the technical problems existing in the prior art, the embodiment of the present invention provides a method for clock synchronization between the NTP network and the PTP network. The method realizes clock synchronization between the NTP network and the PTP network, so that Some of them can communicate with PTP network under the current situation of NTP network, which achieves the effect of saving cost and improving accuracy.

[0026] T...

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Abstract

The invention discloses a clock synchronizing method for an NTP (Network Time Protocol) network and a PTP (Precision Time Protocol) network, which comprises the following steps: a PTP network side is configured as a master clock, an NTP network side is configured as a slave clock, and a message processing server is arranged between the master and slave clocks; a clock synchronizing message sent from the PTP network side is received by the message processing server, converted into message with an NTP message format, and finally transmitted to the NTP network side; and after response message sent from the NTP network and for the clock synchronizing message, the response message is converted into delay request message with a PTP message format, and the delay request message is transmitted to the PTP network side. The method achieves the clock synchronizing of the NTP network and the PTP network, enables the most conventional NTP network can be communicated with the PTP network, and obtains technical effects including cost conversation and precision improvement.

Description

technical field [0001] The invention relates to the technical field of Internet communication, in particular to a clock synchronization method between an NTP network and a PTP network. Background technique [0002] On the Internet, there is no clear indicator requirement for the design of general computers and interconnected devices in terms of time stability. The clock oscillators of these devices operate in an uncalibrated free-running condition. Due to stability changes, electromagnetic interference, oscillator aging and production debugging, there is some error between the oscillation frequency of the clock and the exact frequency. These errors may seem insignificant at first glance, but they can have a considerable impact after long-term accumulation. Assuming that a device uses a clock with a very high accuracy, and its accuracy is set to 0.001%, then the error it produces in one second is only 10 microseconds, and the clock deviation generated in a day is close to 1...

Claims

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Application Information

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IPC IPC(8): H04L7/00H04L12/56H04J3/06
Inventor 田志宏王佰玲叶建伟张宏莉张旭王伟东何慧张伟哲余翔湛韩笑刘建华
Owner HARBIN INST OF TECH
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