A media converter for transmitting data of a wired data network, transmitter, receiver for a media converter of this type, and method for transmitting data of a wired data network, in which a data signal is received via a first medium in accordance with a first network protocol and is converted into a sequence of bits that represents transmitted data on the physical layer of a second protocol, which is based on a different energy form that is present after conversion. A wireless transmission signal in a predetermined frequency band that is subsequently modulated using the sequence of bits, can subsequently be emitted and received on the receiving side as a wireless transmission signal in the predetermined frequency band, which is thereupon demodulated into a sequence of bits that represents data on the physical layer of the second protocol. After conversion of the sequence of bits into a data signal in accordance with the first network protocol, the signal is outputted via the wired data network.

Systems and methods of communication synchronization are described herein. An exemplary system includes two or more radios and a cloud controller. The two or more radios are collocated with one another and they communicate with two far radios over a pair of long range wireless links. The two or more radios are configured to transmit and receive in synchronization with one another on a same channel. An off-axis response for each of the two or more radios is reduced compared to their on-axis response for improved signal to noise ratio.

This invention relates to methods and systems for estimating offset, skew and drift. Embodiments of the invention relate to methods and systems which allow these relationships between a slave clock and a master clock to be estimated based on the exchange of timestamped messages between the master and the slave. Further embodiments of the invention set out uses of these estimates to synchronize a local clock in a slave to a master and to steer the slave clock to stay aligned to the master clock when the master clock is temporarily unavailable or the communication path between slave and master is temporarily unavailable.

Simultaneous transmission on a shared channel by a plurality of collocated radios is provided herein. The two or more radios are collocated with one another and are communicating with two far radios over a pair of long range wireless links. The two or more radios are configured to transmit and receive in synchronization with one another on a same channel. An off-axis response for each of the two or more radios is reduced compared to their on-axis response for improved signal to noise ratio, and the on-axis response the two or more radios are substantially equal to one another.

There is provided a method in a communication network system of e.g. IP type for live distribution of media content capable of node-to-node time-transfer for synchronizing a respective local clock of an originating server and at least one client device or other server by means of two-way time transfer. The media content is sent as a data stream using unicast or multicast via respective communication links over a network. The method comprises employing a mode in which two-way time transfer is selectively provided, selectively meaning that two-way time transfer is employed such that the amount of per client specific time information being exchanged by the server and client devices is controlled, e.g. by time limiting the two-way time transfer, or during that mode reducing the occurrence of full two-way time transfer based synchronization of the client devices.

Techniques are disclosed for determining propagation delay of a first path and or of a second path which connect a first transceiver unit associated with a first clock to a second transceiver unit associated with a second clock in a communications network, based on a first time reference representing a time of transmission of a first signal from the first transceiver unit, a second time reference representing the time of receipt of the first signal at the second transceiver unit, a third time reference representing a time of transmission of a reply to the second signal from the second transceiver unit, and a fourth time reference representing the time of receipt of the reply to the second signal at the first transceiver unit.

A system on a chip (SOC) is configured to support multiple time domains within a time-sensitive networking (TSN) environment. TSN extends Ethernet networks to support a deterministic and high-availability communication on Layer 2 (data link layer of open system interconnect OSI model) for time coordinated capabilities such as industrial automation and control applications. Processors in a system may have an application time domain separate from the communication time domain. In addition, each type time domain may also have multiple potential time masters to drive synchronization for fault tolerance. The SoC supports multiple time domains driven by different time masters and graceful time master switching. Timing masters may be switched at run-time in case of a failure in the system. Software drives the SoC to establish communication paths through a sync router to facilitate communication between time providers and time consumers. Multiple time sources are supported.

Disclosed herein is an apparatus for supporting time synchronization between unmanned vehicles, which includes a time synchronization message generation unit for generating a first time synchronization message, including information about a reference time base used to synchronize time of one or more unmanned vehicles or one or more boards within each unmanned vehicle; a communication unit for sending the first time synchronization message to the unmanned vehicle, the boards, or an additional apparatus for supporting time synchronization, connected over a network, and receiving a second time synchronization message from the unmanned vehicles or the additional apparatus for supporting time synchronization; and a time synchronization unit for determining an optimal time base using the first and second synchronization messages and synchronizing an internal time base with the unmanned vehicles, the boards, or the additional apparatus for supporting time synchronization using the optimal time base.

Aspects of the disclosure provide a method and a terminal device for providing an application interface. Processing circuitry executes an application program that provides a graphical interface on a display device. The processing circuitry obtains a present location of a graphical symbol in the graphical interface. The graphical symbol is indicative of a placement of a resource for use at a specific area in the graphical interface. Then, the processing circuitry determines whether the present location of the graphical symbol satisfies a preset condition, and determines a target location when the present location satisfies the preset condition. Then, the network interface circuitry sends a request message to a server device. When the terminal device receives an approval message, the terminal device updates the graphical interface with a graphical icon of the resource being positioned at the target location.

This invention relates to methods and systems for estimating offset, skew and drift. Embodiments of the invention relate to methods and systems which allow these relationships between a slave clock and a master clock to be estimated based on the exchange of timestamped messages between the master and the slave. Further embodiments of the invention set out uses of these estimates to synchronize a local clock in a slave to a master and to steer the slave clock to stay aligned to the master clock when the master clock is temporarily unavailable or the communication path between slave and master is temporarily unavailable.