This application discloses a port status configuration method, apparatus, and system, and a storage medium, and belongs to the communication field. In an embodiment, a configuration device obtains port datasets of M ports of N translators, where N is an integer greater than 1, M is an integer greater than 1, the N translators are integrated in at least two independent devices, the M ports are M precision time protocol ports, and the port datasets are precision time protocol port datasets. The configuration device configures port statuses of the M ports based on the port datasets of the M ports, where the port statuses are precision time protocol port statuses. This application achieves automatic configuration of the port statuses and improves configuration accuracy.

A method for enabling a performance measurement on packet flow transmitted through a communication network. A marking value is periodically switched in the packets with a marking period Tm. The packet flow is then divided into blocks of duration Ts (synchronization period). Each synchronization period comprises an integer number of marking periods. Two or more measurement points on the path of the packet flow may provide a performance parameter for each marking period and associate thereto a synchronization information generated based on their local clocks and relating to the synchronization period containing the marking period to which the performance parameter relates; and a sequence information indicating the marking period's position within the synchronization period. A management server may identify performance parameters provided by different measurement points and relating to a same marking period based on the synchronization information and the sequence information.

In a network having at least one slave node including a slave clock, a method of adjusting the slave clock relative to a master clock of a master node includes, at the slave node, correcting a time of day of the slave clock using (a) a slave pulse signal having a known slave pulse rate, (b) a time-of-day counter of the slave node, and (c) a master pulse signal, based on values of the slave clock at nearest corresponding edges of the slave pulse signal and the master pulse signal, and correcting a frequency of the slave clock using the slave pulse signal, a clock signal of the slave node, and the master pulse signal, based on values of the slave clock at nearest corresponding edges of the master pulse signal. No other clock signal from outside the slave node is used for the corrections.

Methods and systems may be used to synchronize time across multiple IoT related entities, such as a network of resource constrained sensor and actuator type devices, IoT gateways, IoT cloud services, or IoT applications.

Systems and methods for device time synchronization by networking devices are disclosed. For example, a networking device may be configured to perform one or more operations to synchronize time as between the networking device and one or more computing devices in an environment. The networking device may be selected from multiple networking devices to be the time master based on one or more factors and/or operations, such as the number of devices in communication with the networking devices, the device types of those devices, device-communication amounts, communication abilities of the devices, and/or which networking device has a wired connection to a modem, for example.

An electronics circuit, comprising: a master controller; and a plurality of modules; wherein the master controller comprises: a timing signal generator arranged to generate a timing signal; and a data signal generator arranged to generate a data signal; wherein the master controller is arranged to generate a combined signal based on both the timing signal and the data signal; and wherein the master controller is arranged to broadcast the combined signal to the plurality of modules. By broadcasting the timing signal to the modules along with the data signal, the available bandwidth is effectively utilised without requiring a large number of separate signal paths to each module and without time multiplexing the signals. Thus accurate time synchronisation can be achieved such that the system can operate effectively at a high switching frequency. As the switches on the modules are not directly controlled by the master controller, the system provides a decentralised architecture in which processing of the received signals can be done locally on each module.

There is provided a method of clock recovery and a system thereof. The method comprises: by master clock node or by client clock node, generating a first flow of time-stamped packets bearing indication of high priority of delivery and, in parallel, generating a second flow of time-stamped packets bearing indication of lower priority of delivery. By client clock node, processing the packets from the first flow separately from the packets from the second flow to define, separately for each flow, a function informative of changes of packets' delays in the respective flow over time; using the defined functions informative of changes of packets' delays in the first and the second flows over the same time intervals to assess a cause of the packets' delays changes; and applying a clock recovery algorithm in a manner differentiated in accordance with the assessed cause.

A time-point synchronization apparatus (10) includes a time-point management unit (144), a time-gap counter (145), and a time-gap calculation unit (142). The time-point management unit (144) manages an apparatus time point equivalent to a current time point. The time-gap counter (145) records a time gap which is a different between a time point indicated in reception information and the apparatus time point. When a frequency in the time-gap counter (145), corresponding to the time gap corresponding to a latest reception time point corresponding to latest reception information is treated as the highest among all of frequencies indicated in the time-gap counter (145), the time-gap calculation unit (142) synchronizes the apparatus time point to the latest reception time point.

Techniques that provide link establishment between a radio equipment controller (REC) and a radio equipment (RE) in a fronthaul network are described herein. In one embodiment, a method includes performing, Common Public Radio Interface (CPRI) Layer 1 (L1) link auto-negotiation operations to establish a CPRI link between the REC and RE. A proxy slave may achieve a hyper frame number (HFN) synchronization with the REC at a link bit rate for a first CPRI bit stream and communicate the first CPRI bit stream and the link bit rate to a proxy master. The proxy master may communicate a second CPRI bit stream to the proxy slave to transmit to the REC. The L1 link auto-negotiation operations are completed and CPRI link is established between the REC and the RE when the REC achieves a HFN synchronization for the second CPRI bit stream.

An information control method and apparatus, and a communications device are provided. The information control method includes: receiving a first message, where the first message is a message including information about a first root object; and performing a first operation; where the first operation includes at least one of the following: generating a message priority vector based on a first port and/or the first message; generating a path priority vector of the first root object based on the first port, the first message, and/or a path cost of a receiving port, or generating a path priority vector of the first root object based on the message priority vector and/or a path cost of a receiving port; sending first root information to a first target end; and replacing a port priority vector of the first port with the message priority vector.