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发明授权
CN1960242B 实现时钟同步的方法、装置、系统及分布式系统 失效 - 权利终止

实现时钟同步的方法、装置、系统及分布式系统
摘要：
本发明提供一种实现时钟同步的方法，包括：在介质访问控制器与物理层设备收发器之间获取主机发出SYNC第一数据包的本地发送时间戳和从机接收SYNC的本地接收时间戳，并获取从机发出DELAY_REQ的本地发送时间戳和主机接收DELAY_REQ的本地接收时间戳，利用获取的主机发出SYNC的本地发送时间戳、从机接收SYNC的本地接收时间戳、从机发出DELAY_REQ的本地发送时间戳和主机接收DELAY_REQ的本地接收时间戳，计算SYNC从主机传播到从机时的网络传输延迟；根据主机发出SYNC的本地发送时间戳、从机接收SYNC的本地接收时间戳和SYNC从主机传播到从机时的网络传输延迟，计算时钟计数器之间计数值的偏差；对所述偏差进行校正。本发明还提供一种实现时钟同步的装置、系统及分布式系统。
摘要（英）：

The invention provides a method for implementing clock synchronization including: obtaining a local sending timestamp when a host computer sends SYNC first data packet and a local receiving timestamp when a slave computer receives SYNC between a media access control controller and a physical layer device transceiver, and obtaining the local sending timestamp when the slave computer sends DELAY_REQ and the local receiving timestamp when the host computer receives the DELAY_REQ, using the obtained the local sending timestamp when the host computer sends the SYNC, the local receiving timestamp when the slave computer receives the SYNC, the local sending timestamp when the slave computer sends the DELAY_REQ and the local receiving timestamp when the host computer receives the DELAY_REQ to calculate the network transmission delay of the SYNC from the host computer and the slave computer; according to the local sending timestamp when the host computer sends the SYNC, the local receiving timestamp when the slave computer receives the SYNC and the network transmission delay of the SYNC from the host computer to the slave computer, calculating the counting value deviation between clock counters; correcting the deviation. The invention also provides a device, a system and a distributed system for implementing clock synchronization.

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