A communication device (10) communicates with a communication device (20) in each of time divisions defined by shared time that is shared with the communication device (20). The communication device (10) includes a clocking unit (11) that measures the shared time, an acquirer (13) that acquires, from the communication device (20), error information about a first error of the communication device (20) in measuring the shared time, and a specifier (14) that specifies, to the communication device (20), a suspension duration at least at a start or at an end of each of the time divisions. The suspension duration is a duration for which the communication device (20) suspends data transmission. The suspension duration specified by the specifier (14) is greater than or equal to a greater error of the first error and a second error that is an error of the clocking unit (11) in time measurement.

In one embodiment, a method for synchronizing sensor data of an autonomous driving vehicle includes determining, by a processing device of an inertial navigation system (INS), that global navigation satellite system (GNSS) data is unavailable and identifying an alternative source of time information. The method further includes retrieving time information from the alternative source and synchronizing sensor data with the time information from the alternative source of time information.

A radio link monitoring method, the method includes: generating an indication indicating that a reference signal is not detected if the reference signal is not detected; and performing radio link monitoring according to the indication.

A slave unit that is a communication apparatus according to the present invention includes: a frame relaying unit that receives, among communication frames received by a reception port, a communication frame to be relayed to the other apparatus and outputs the received communication frame to a transmission port; a frame transmitting unit that generates a communication frame and outputs the communication frame to the transmission port; and a transmission-frame arbitrating unit that regulates output of the communication frame to the transmission port performed by the frame transmitting unit in a guard time that is a period including a time period in which arrival of the communication frame transmitted in a network in a fixed cycle is expected.

This application discloses a method, an apparatus, and a system for processing a time synchronization fault, and a storage medium, and belongs to the communications field. The method includes: when time of a first translator in a first network is not synchronized with a clock source that is in the first network, stopping sending, to a device communicating with the first translator, time synchronized with a clock source that is in a second network, where the device is located in the second network. In this application, incorrect time is not obtained for synchronization.

A file download method comprises obtaining, by a play device when N data blocks of a file are downloaded from a server in parallel, a network parameter of at least one data block of the N data blocks downloaded in a current network environment, obtaining, by the play device after any one of the N data blocks is completely downloaded and before a next data block following the N data blocks starts to be downloaded, a size of the next data block according to the network parameter, and downloading, by the play device, the next data block from the server according to the size of the next data block. Using the embodiments of the present disclosure, a streaming media player downloads a data block in parallel from a media server.

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.

An audio system, method, and computer program product for synchronizing device clocks. The systems, methods and computer program product can establish a first isochronous data stream between a peripheral device and a first device and establish a second isochronous data stream between the first device and a second device to send data between the first and second device. As the two data streams may rely on two different device clocks, e.g., one clock which defines the timing for the first isochronous data stream and a second clock which defines the timing for the second isochronous data stream, the systems, methods, and computer program disclosed herein are configured to maintain synchronization and/or synchronize the first clock with the second clock to prevent data loss due to clock drift.

A computer-implemented method for synchronizing nodes on a controller area network includes identifying, via a processor, a node from a plurality of nodes as a sync master node; designating, via the processor, each of the remaining nodes as a sync slave node; designating, via the processor, the first message from the sync master node as a sync message; assigning, via the processor, the lowest number, among all the message IDs in the network system, to the message ID of the sync message; determining a sync message target receiving time on a sync slave node; and triggering an interrupt to the processor responsive to receiving the sync message on a sync slave node in the controller area network to perform time adjustment on the sync slave node.

The invention is adapted to acquire more useful log data. A master device (4) includes a timer element (45), adapted to acquire a moment; an instruction sending element (421), adapted to synchronize a moment measured by a slave timer element (14) of slave devices (1-3) with a moment acquired by the timer element (45) according to a time synchronization instruction containing moment information corresponding to the moment acquired by the timer element (45); and a slave log receiving element (423), adapted to receive slave logs (131).