A Time Synchronization Method under the Background of Large Flow of Submarine Observation Network

Abstract

The invention discloses a seafloor observation network time synchronization method under a large traffic background. The time synchronization method is based on IEEE1588V2 protocol and T-MPLS configuration. A shore-based station PTP master clock receives global position system (GPS) or Beidou satellite signals to be synchronized with a local clock of the shore-based station PTP master clock and serves as a time synchronization system clock source to provide time service for a seafloor observation network. The shore-based station PTP master clock is connected with an underwater PTP slave clock through network transmission devices such as a shore-based station PTN, an underwater main junction box PTN and an underwater auxiliary junction box exchanger to be synchronized with time of the underwater PTP slave clock through interaction of PTP time synchronization messages, and the PTP slave clock provides multi-mode time signal time services for the observation network. Virtual private channels of the PTP time synchronization messages and data packets are arranged respectively through T-MPLS, thereby, timely response transmission of the PTP time synchronization messages can be achieved, and the time synchronization accuracy of the seafloor observation network can be greatly improved.

Description

technical field [0001] The invention relates to a time synchronization method under the background of large flow of seabed observation network, in particular to a time synchronization method under the background of large flow of seabed observation network based on IEEE1588 V2 protocol and T-MPLS configuration. Background technique [0002] With the continuous development of marine science and technology, traditional ocean detection methods have been increasingly unable to meet human needs. A long-term, wide-range, continuous real-time detection method - the submarine observation network came into being. As a new observation platform for humans to explore the earth system, the seabed observation network can connect hundreds of various seabed scientific instruments, for marine scientific research, monitoring and prevention of geological disasters such as earthquakes and tsunamis, and monitoring of hydrothermal phenomena on the seabed Observation, long-term tracking of global ...

AI Technical Summary

Problems solved by technology

[0003] Due to the obstruction of seawater, the scientific instruments connected to the seabed observation network cannot perform direct time service through the satellite system

Using the IEEE 1588V2 protocol based on wired Ethernet, it can provide time synchronization services for submarine scientific instruments, and achieve time synchronization accuracy to a subtle level under the condition of no flow or small flow. However, as the amount of communication data continues to increase, the normal situation The time synchronization accuracy will also be affected to a greater extent

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