Method, device and storage medium for realizing precise time protocol synchronization message

Abstract

The invention discloses a method, a device and a storage medium for realizing a precise time protocol synchronization message, including recording the message time, identifying a PTP message, and judging whether it is a one-step Sync message; in the receiving direction, modifying and correcting the one-step Sync message For the processing of the field field, when modifying the new correction field new correctionField, read the timestamp recorded in the OriginTimestamp field; in the sending direction, process the one-step Sync message, and set the starting timestamp OriginTimestamp as the departure timestamp. In the present invention, the PHY records the incoming and outgoing time of the message at the MDI, and modifies the correction field and the initial timestamp field of the PTP message while forwarding, so as to realize the one-step mode processing of the Sync message on the TC, and simplify the TC. It avoids the occupation of additional network bandwidth and improves the time accuracy; realizes the modification of one-step Sync message in the physical layer, which not only improves the time accuracy, but also reduces the difficulty of system development and reduces the product cost. Development and maintenance costs.

Description

technical field [0001] The invention belongs to the field of Ethernet, and in particular relates to a method, a device and a storage medium for realizing precise time protocol synchronization messages. Background technique [0002] The Precision Time Protocol (PTP) defined by IEEE1588 is a widely used time synchronization technology solution. The need for time synchronization of the distribution network. PTP calculates and recovers the local clock and frequency by recording the time stamps of specific PTP protocol packets arriving and leaving the device. 1588v2 has 3 clock modes: normal clock (OC), boundary clock (BC) and transparent clock (TC). [0003] End-to-End Transparent Clock (E2ETC) needs to add the local residence time (resid enceTime) and the ingress delay asymmetry correction (correctionField) field in the PTP synchronization message (Sync) delayAsymmetry), the peer-to-peer TransparentClock (P2PTC) should add the local residenceTime, entry delayAsymmetry and en...

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Problems solved by technology

[0015] The purpose of the present invention is to provide a method, a device and a storage medium for realizing precise time protocol synchronization messages; to solve the problem of occupying a large amount of network bandwidth in the main scheme of TC for realizing PTP Sync messages at present, and it is difficult to realize, and the error caused by PHY cannot be completely eliminated , leading to the problem of limited time accuracy improvement; the present invention realizes the one-step mode forwarding of PTP TC to Sync messages at the physical layer, improves the PTP time accuracy, and simplifies the design of the TC equipment system

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