[Object] To simplify the operation of a terminal device for performing D2D communication in which the same communication scheme as the communication scheme of cellular communication is adopted. [Solution] Provided is a terminal device including: a detection unit configured to detect a synchronization signal for wireless communication with a base station; and a control unit configured to control transmission of a synchronization signal for inter-device communication. A radio frame used in the wireless communication with the base station and a radio frame used in the inter-device communication have a same frame structure. A timing of the synchronization signal for the inter-device communication in the same frame structure is same as a timing of the synchronization signal for the wireless communication with the base station in the same frame structure.

Disclosed are a synchronization method and a terminal apparatus resolving the issue of how to support synchronization of resources having different SCSs. The synchronization method includes: a terminal apparatus determining a type of synchronization sources, the synchronization sources including one or more combinations of: a base station in a Long Term Evolution (LTE) network, a base station in the Fifth Generation Mobile Communication Technology (5G) network, a Global Navigation Satellite System (GNSS) and a communication node; the terminal apparatus determining, from one or more synchronization sources matching the type, a synchronization source of the terminal apparatus; and the terminal apparatus synchronizing with the determined synchronization source.

A communication device includes: a communication unit that performs wireless communication; and a control unit (103) that performs control so that a plurality of synchronization signals is patterned and arranged in regions to which resources of the wireless communication are allocated and is transmitted to another terminal device, the plurality of synchronization signals being associated with each of a plurality of beams allocated to be available for inter-device communication between different terminal devices, in which the control unit (103) performs control so that a pattern in which the plurality of synchronization signals is arranged is switched according to a predetermined condition.

This disclosure relates to techniques for supporting narrowband device-to-device wireless communication, including possible techniques for providing synchronization sequences. A first wireless device may transmit a preamble of a device-to-device wireless communication with a second wireless device. The preamble may include a first synchronization sequence. The first synchronization sequence may include multiple repetitions of a basis sequence, multiplied by a cover code. The basis sequence may span multiple orthogonal frequency division multiplexing symbols.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a sidelink synchronization signal and may identify a set of parameters (e.g., cyclic shifts or orthogonal cover codes) that are configured for generating a set of reference signals for transmission within a sidelink broadcast resource based on receiving the sidelink synchronization signal. The UE may transmit, within the sidelink broadcast channel resource, a first reference signal of the set of reference signals that is generated based on applying, to a reference signal sequence, a first parameter of the set of parameters that is orthogonal to a second parameter of the set of parameters that is applied to the reference signal sequence to generate a second reference signal of the set of reference signals.

An apparatus for controlling platooning controls timing of transmitting or receiving a message. The apparatus includes a communication device to communicate with other vehicles in a platoon and to transmit a message, which is received from the other vehicles, in a form of a full message and includes a controller to generate logic message for the platooning, to check omission of the message from the full message received using the communication device, and to adjust a latency of the message when the omission of the message occurs.

The present technology relates to a communication device and a communication method capable of transmitting the identical signals more appropriately.

A communication device includes a control unit configured to perform control such that a first signal related to setting of identical signals are transmitted and received between first other communication devices, and the identical signals are transmitted to a second other communication device based on the first signal, thereby allowing transmission of the identical signals more appropriately. The present technology can be applied to, for example, a wireless LAN system.

A method uses a distributed data acquisition system with multiple, physically unconnected, data acquisition units, that can be in wireless communication with a remote host, to timestamp measurement data with sub-microsecond time base accuracy of sampling clock relative to an absolute timeframe. A current absolute time is derived from messages received from a satellite radio beacon positioning system (GPS). Measurement data is sampled by each unit at a specified sampling rate. Using hardware logic, batches of sampled data are associated with corresponding timestamps representing the absolute time at which the data was sampled. Data and timestamps may be transmitted to the host. A time offset bias is compensated by comparing timestamps against a nominal time based on start time and nominal sampling rate. The sampling clock rate may be disciplined using time pulses from the GPS receiver. An initial start of data sampling by all units can also be synchronized.

According to an aspect, there is disclosed a method that includes aligning, by a radio access network node wirelessly connected to at least two parent nodes and to a child node, an uplink reception timing associated with the child node with a downlink reception timing associated with a parent node of the at least two parent nodes.

A wireless mesh network of nodes includes at least one relay node, the at least one relay node being configured to receive a first signal, the first signal corresponding to a first symbol comprised in a data frame, the first symbol having a first symbol duration s; and to generate and transmit a second signal, the second signal corresponding to the first signal. The first signal and the second signal are modulated such that a sum of the first signal and the second signal is capable of being received and demodulated by at least one relay node so as to obtain a sum of symbols including the first symbol and the second symbol.