One embodiment of the present invention sets forth a technique for performing time synchronization within a network. The technique includes receiving, from a first node in the network and at a first receive time, a first periodic beacon that includes a first network time associated with the first node. The technique also includes determining a second receive time at which a second periodic beacon from the first node is to be received based on the first network time and the first receive time. The technique further includes calculating a first listening window for the second periodic beacon based on the second receive time, a first jitter uncertainty, and a first drift uncertainty, and listening for the second periodic beacon during the first listening window.

Described herein are systems, methods, and non-transitory computer-readable media configured to determine times embedded in a plurality of signals. A time deviation is detected based on the times embedded in the plurality of signals. In response, signal strengths associated with the plurality of signals are determined. Data is timestamped based on time embedded a signal that has a highest signal strength.

A first network element includes trail trace identifier information in an optical network frame. The first network element obtains data to transmit over an optical network link to a second network element. The first network element generates an optical network frame with alignment marker bytes, which are followed by padding bytes. The optical network frame also includes overhead bytes following the padding bytes. The overhead bytes include a Multi-Frame Alignment Signal (MFAS) byte, a link status byte, and reserved bytes. The optical network frame also includes a payload bytes following the overhead bytes. The payload bytes encode at least a portion of the data to transmit to the second network element. The first network element inserts trail trace identifier information into the reserved bytes in the overhead bytes. The trail trace identifier information identifies the first network element as a source of the optical network frame.

The present application discloses a method for determining time information, including: detecting a signal of a periodic block, and recording a timestamp of the periodic block; and determining a time at which a time information message to be sent according to the timestamp of the periodic block matched with the time information message, and generating a timestamp of the time information message. The present application further discloses an apparatus and device for determining time information, and a storage medium.

Examples relate to communicating synchronization information from a satellite to a power supply device to enable time synchronization between the satellite and the power supply device. The power supply device includes a port to receive, from a modulator, a modulated current corresponding to a power consumption across a dummy load, where a level pattern of the modulated current indicates the synchronization information received from the satellite. The power supply device includes a power consumption analyzer configured to receive a modulated voltage, across a shunt resistor, corresponding to the modulated current and recover, from the modulated voltage, the synchronization information.

A communication device according to an embodiment includes one or more hardware processors. The one or more hardware processors: receives, from a server device performing communication by a communication method of synchronizing a number indicating a communication timing, a reference number indicating the number serving as a reference; and determines a processing timing of predetermined processing, based on the reference number.

A network device includes one or more ports coupled to a network, and a time synchronization module. The time synchronization module processes (i) respective path information, and (ii) respective time synchronization information included in each of at least some of a plurality of time synchronization packets received from a master clock device over two or more different communication paths and via at least one of the one or more ports, wherein the respective path information indicates a respective communication path in the network via which the respective time synchronization packet was received. The time synchronization module determines a system time clock responsive to the processing of the path information and the time synchronization information included in the at least some of the plurality of time synchronization packets.

Disclosed is a time synchronization method and apparatus. The method includes: receiving a time synchronization message sent by an upstream device through a clock port; obtaining a message rate parameter in the time synchronization message; according to the message rate parameter, correcting a time synchronization message loss detection parameter of a slave clock port, wherein the time synchronization message loss detection parameter is used to detect whether the time synchronization message is lost; and according to a correction result, keeping clock synchronization with the upstream device.

An electronic device is provided including a processor, a communications interface coupled to the processor, a memory coupled to the processor, and a module saved in the memory. The module configures the processor to receive a first communications packet from a remote device via the communications interface including information useful for estimating a clock offset of the remote device, and determine an upper bound of the clock offset of the remote device with respect to the electronic device based on the information.

Techniques for synchronizing a clock of a first apparatus and a clock of a second apparatus in communication with the first apparatus via a network. The techniques include communicating first data between the first apparatus and second apparatus via a network, communicating, while at least a portion of the first data is being communicated via the network, a synchronization packet between the first apparatus and the second apparatus, and communicating second data between the first apparatus and the second apparatus after synchronization between the first apparatus and the second apparatus has been established.