A terminal is disclosed that includes a transmitter that performs uplink transmission; and a processor that adjusts timing of the uplink transmission with respect to a downlink reception timing, wherein, when a band of a cell in which uplink transmission is performed is not a predetermined band, the processor adjusts the timing by using a same offset value when a duplex mode of the band of the cell is frequency division duplex (FDD) and when the duplex mode of the band of the cell is time division duplex (TDD). In other aspects, a base station and an uplink transmission timing adjustment method executed by the terminal are also disclosed.

This application provides a communication method and a communications device. The method includes: obtaining, by a first communications device, authorization information, where the authorization information indicates that a second communications device is a device that needs to perform time synchronization; and providing, by the first communications device, time information for the second communications device based on the authorization information; or obtaining, by the first communications device, authorization information, where the authorization information indicates that the second communications device is not a device that needs to perform time synchronization; and skipping, by the first communications device, providing time information for the second communications device based on the authorization information, to avoid broadcasting the time information to all communications devices, so that a time synchronization service can be provided for a specific communications device.

Systems, devices, and methods relate to a hybrid wireless access point (AP) which can support both single-channel mode and multi-channel mode at same time and within the same device. Uplink and/or downlink packets may be received by the hybrid AP, where the received packet may be same packet sent to different hybrid APs, and then each hybrid AP may decide to use these received packets for single-channel architecture (SCA), multi-channel architecture (MCA), or both. In SCA, the hybrid APs may communicate with each other to sync the SCA behavior.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit an indication of one or more reception parameters, of the UE, for sidelink communication and downlink communication. The UE may receive, based at least in part on the one or more reception parameters, at least one of one or more sidelink streams or one or more downlink streams. Numerous other aspects are provided.

Techniques for controlling or managing uplink access of a UE to a base station using unlicensed spectrum includes signaling an indication of different uplink access constraints so the UE connects to the base station when the UE and/or the uplink direction between the UE and the base station meet the uplink access constraints. The indication may be broadcast in a reference or synchronization signal, e.g., by utilizing unused or undesignated bits. Uplink access constraints may include a threshold distance of UEs from the base station, interference in the uplink direction (which may differ from interference in the downlink direction), etc. Based on the indicated constraints, the UE may determine whether or not to consider the base station as a candidate serving cell for wireless network access. The UE may be an in-flight aircraft and the base station may be a logical cell of a network that provides in-flight connectivity services.

A method of operating an infrastructure equipment forming part of a wireless communications network for transmitting data to or receiving data from a communications device. The method comprises providing a wireless access interface to form a first cell of the wireless communications network, the infrastructure equipment forming part of a radio access network of the wireless communications network, broadcasting a re-synchronisation signal, RSS, of the first cell, the RSS being configured to carry information which is detectable by the communications device for acquiring synchronisation with the infrastructure equipment, and broadcasting an indication of a position in time and frequency of an RSS of each of one or more neighbouring cells to the first, the RSSs of each of the one or more neighbouring cells being configured to carry information which is detectable by the communications device for performing measurements on the each of the one or more neighbouring cells.

The invention relates to a method implemented in a V2X device (2) for exchanging V2X messages comprising data packets with one or more receiving V2X devices connected via a cellular communication network (4), the method comprising the steps of (a) running one or more V2X applications, running a V2X application comprising the generation of V2X message data associated with the V2X application, (b) transmitting the V2X message data to a distribution interface (203) at an injection time, and (c) transmitting the V2X message, in a format which is encoded using the message data retrieved from the distribution interface (203), to the receiving V2X devices via a radio link, using radio access technology, at a send time. The injection time is determined on the basis of an initial injection time defined by a predefined period. The method comprises a step of calculating the injection time of a current message on the basis of the initial injection time and time information relating to at least one previous V2X message sent by the V2X device via the radio link, the time information relating to a previous message comprising the injection time of the previous message into the distribution interface and the send time of the previous V2X message by the V2X communication device via the radio link.

This disclosure describes systems, methods, and devices related to enhanced time synchronization. A device may define a reference device as a reference access point (AP) or a reference AP multi-link device (MLD). The device may cause to send a TSF alignment request frame to a responder AP to align its TSF with an initiator AP for coordinated target wake time (TWT) or a restricted TWT (rTWT) service periods (SPs). The device may identify a TSF alignment response frame received from the responder AP in response to the TSF alignment request frame.

A communication method and apparatus. A terminal device determines, based on first information received from a first network device, that a second network device has first time information, where the first time information is time information having precision that is higher than precision of second time information of the first network device. The terminal device obtains the first time information of the second network device based on the first information. The terminal device obtains high-precision time information to improve communication reliability.

A communication method and an apparatus includes a terminal device that receives a first SSB, determines a PUSCH occasion corresponding to the first SSB, and sends uplink information by using the PUSCH occasion corresponding to the first SSB; and further, the terminal device receives, based on a spatial reception parameter of the first SSB, downlink information sent by a network device.