A method, a network device and a terminal device for transmitting information are provided. The method includes: a network device sends downlink control information to a terminal device through control resource areas in a time domain scheduling unit, wherein the control resource areas include multiple types of control resource areas, different types of control resource areas are used for sending different types downlink control information, and a first type of control resource area in the multiple types of control resource areas comprises partial frequency domain resources pre-configured or semi-statically configured on each Orthogonal Frequency Division Multiplexing (OFDM) symbol in the time domain scheduling unit.

This application provides example signal transmission methods and example apparatuses. One example method includes receiving random access channel (RACH) configuration information of a neighboring cell from a location management device or a serving cell, where the RACH configuration information includes information about an RACH resource and a preamble. The preamble can then be sent to the neighboring cell by using the RACH resource. An uplink TA of the neighboring cell that is determined by the neighboring cell based on the preamble can then be received.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may generate a pseudorandom noise (PN) sequence, modulate the PN sequence based at least in part on a modulation order parameter, and transmit the PN sequence in one or more symbols prior to transmitting sidelink data. The one or more symbols used to transmit the PN sequence may be used for automatic gain control (AGC) training at a receiving device. The user equipment may then transmit the sidelink data in a plurality of symbols that are subsequent in time relative to the one or more symbols used to transmit the PN sequence, and the receiving device may process the sidelink data based on the AGC training. Numerous other aspects are provided.

A novel way for transmitting physical signals by a transmitter node (20, 40) based on the LBT principle, and informing a receiver node (30, 50) in cases where the transmission of the physical signals has been deferred or does not occur in a certain time resource, is presented. A transmitter node (20, 40) listens to a wireless radio channel during a first time resource. If there is no activity, or if the activity is below a threshold, the transmitter node (20, 40), in a second time resource, transmits an indicator indicating that one or more physical signals are also transmitted in the second time resource. A receiver node (30, 50) detects if an indicator is present in the time resource. If the receiver node (30, 50) detects the indicator, the receiver node (30, 50) may also receive and use one or more reference signals in the current time resource for doing one or more tasks.

Embodiments of the present application relates to a method and device for random access, for use in resolving the problem that no current random access process can satisfy requirements of a satellite communication system. The method of the embodiments of the present application comprises: receiving and obtaining a related parameter in a configuration message, the related parameter comprising common cell delay information; generating a physical random access channel random access preamble (PRACH Preamble) sequence, and determining an uplink sending timing location according to the common cell delay information; and sending the PRACH Preamble sequence on a time-frequency resource corresponding to the uplink sending timing location. A relative transmission delay and a multi-path channel delay from a terminal, to a satellite, and to a base station are compensated according to the determined uplink sending timing location, thereby reducing overheads of a PRACH channel.

A transmitter for transmitting data to a receiver of a wireless communication network is disclosed. The wireless communication network includes a plurality of resource elements, and at least a subset of the plurality of resource elements is shared by a plurality of transmitters for transmitting data from the plurality of transmitters to the receiver. The transmitter includes at least one antenna, an encoder and a transceiver coupled to the encoder and to the antenna. The encoder receives a data element to be transmitted to a receiver of the wireless communication network, and maps the data element to a codeword obtained by selecting at least one vector from a unique set of vectors. The unique set of vectors is exclusively assigned to the transmitter, and each vector includes a plurality of symbols. Each symbol is to be transmitted over a resource element of the wireless communication network. The transceiver transmits via the antenna the codeword on the subset of resource elements, the codeword representing the data element and identifying the transmitter at the receiver.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may obtain access to a base station by performing an initial access procedure within an initial access bandwidth. In some cases, the UE may monitor for a cell specific configuration in the initial access bandwidth that indicate one or more first common search spaces within the initial access bandwidth that the UE may monitor for control information. Additionally, the UE may receive dedicated signaling after the initial access procedure that indicates a downlink bandwidth part (BWP) and one or more second common search spaces within the downlink BWP to monitor for control information. Accordingly, the UE may monitor the first common search spaces, the second common search spaces, or both based on the dedicated signaling.

Embodiments of this application disclose a resource configuration method and a device. The method includes: generating, by a transmit end device, configuration information, where the configuration information is used to indicate at least one resource bundling size, the resource bundling size belongs to a resource bundling size set, and the resource bundling size set corresponds to at least one system configuration parameter; and sending, by the transmit end device, the configuration information.

A novel way for transmitting physical signals by a transmitter node (20, 40) based on the LBT principle, and informing a receiver node (30, 50) in cases where the transmission of the physical signals has been deferred or does not occur in a certain time resource, is presented. A transmitter node (20, 40) listens to a wireless radio channel during a first time resource. If there is no activity, or if the activity is below a threshold, the transmitter node (20, 40), in a second time resource, transmits an indicator indicating that one or more physical signals are also transmitted in the second time resource. A receiver node (30, 50) detects if an indicator is present in the time resource. If the receiver node (30, 50) detects the indicator, the receiver node (30, 50) may also receive and use one or more reference signals in the current time resource for doing one or more tasks.

Provided are a user equipment (UE), a base station and respective transmission/reception methods for UE and base station. The UE comprises circuitry which, in operation, determines, based on a type of a transmission, a time interval between an outer boundary of a transient period for ramping of power to start or finish the transmission and a symbol on which a signal included in the transmission is to be transmitted; and a transceiver which, in operation, transmits the signal on the symbol; wherein the time interval and a time window for clear channel assessment (CCA) are non-overlapping.