Embodiments of the present application provide a time adjustment method and a system, a device, and a storage medium. A terminal can receive indication information from a network device, where the indication information is used to indicate whether the terminal needs to adjust time information of the terminal; thus, when the indication information indicates that the terminal needs to adjust the time information, the terminal adjusts the time information. The technical solution provided by the embodiments of the present application can reduce negative effects of a transmission delay on a clock synchronization process, and is beneficial to realize clock synchronization between the terminal and the network device.

A method and apparatus for random access type selection are provided. A terminal device selects a random access type according to target information, where the target information includes at least one of a round trip time (RTT) of signal propagation between the terminal device and a network device, a timing advance (TA) estimated by the terminal device, or a reference signal received power (RSRP) measured by the terminal device.

Embodiments of the present application provide a communication method and apparatus, the method including: determining, according to first bandwidth information corresponding to a first random access channel occasion RO, an initial uplink bandwidth part BWP. By determining the initial uplink BWP according to the first bandwidth information corresponding to the first RO, it is effectively ensured that the initial uplink BWP will not exceed a terminal bandwidth of the terminal device, thereby ensuring that the terminal device can perform normal uplink data transmission.

The present application relates to synchronization signal transmission using multiple beams. In an example, a network node may support M beams covering M areas. However, only K<M beams may be used at any time for transmission of synchronization signals. Accordingly, the network node cycles through the K beams allocated to synchronization signal transmission, whereby a synchronization signal is transmitted on K spatially-multiplexed and simultaneously-active beams to reach K coverage areas during a first time period, then next K coverage areas during a second time period, and so on until all of the M coverage areas are reached to restart the cycle. A UE is located in only one coverage area, and would see the synchronization signal beam once during a period of time equal to the time needed to cycle through the M coverage areas.

A method is disclosed of a transmitter node comprising a plurality of antenna elements and configured for beam-in formed transmission in a wireless communication environment requiring clear channel assessment (CCA) before transmission. The in method comprises performing CCA measurements by measuring received energy of the plurality of antenna elements, taking a CCA decision based on the measured received energy of the plurality of antenna elements, transforming the measured received energy of in the plurality of antenna elements into measured received energy of a plurality of angular directions, and selecting transmission beam based on the measured received energy of the plurality of angular directions. The wireless communication environment requiring CCA before transmission typically uses an unlicensed frequency spectrum. Corresponding apparatus, transmitter node and computer program product are also disclosed.

The present disclosure provides a method implemented in a wireless network node operating in an unlicensed spectrum, comprising determining a Listen-before-Talk LBT mode for a terminal device; and sending a first indication indicating the determined LBT mode to the terminal device. The disclosure also provides a method implemented in a terminal device operating in an unlicensed spectrum.

Provided are a communication link determination method and apparatus, a device and a storage medium. The method includes the following. A first communication link set in which a channel state of at least one communication link is idle is determined in a communication link set supported by a device. A second communication link set is determined according to the channel state of the at least one communication link in the first communication link set during a preset time period. A target communication link set for transmitting a radio frame is determined according to a channel state of at least one communication link in the second communication link set in a backoff procedure.

A terminal includes a receiving unit that receives information indicating a relationship between configuration periodicity of transmission occasions for a random access preamble for transmission of a MessageA and configuration periodicity of transmission occasions for a physical uplink shared channel in a two step random access procedure; and a control unit that selects, based on the information indicating the relationship, a transmission occasion for the random access preamble and a transmission occasion for the physical uplink shared channel for the transmission of the MessageA in the two step random access procedure.

Methods for 2-step random access (RA) message (MSG) A resource configuration and a terminal device are provided. The method includes receiving first configuration information from a network device. The first configuration information includes a physical random access channel (PRACH) resource configuration of a 2-step RA MSG A resource, physical uplink shared channel (PUSCH) resource configurations of the 2-step RA MSG A resource, and a correspondence between a PRACH time-domain resource configuration and the PUSCH resource configurations. The PRACH resource configuration includes the PRACH time-domain resource configuration, and the PRACH time-domain resource configuration is for determining random access channel (RACH) occasion (RO) time-domain resource locations. The correspondence is for constraining PUSCH occasions (POs) corresponding to different RO time-domain resource locations to be distributed on different PUSCH resource configurations during any period of time having a length equal to a length of a preamble receiving window.

There is provided a communication apparatus comprising: one or more processors; and one or more memories storing instructions that, when executed by the one or more processors, cause the communication apparatus to: generate capability information about a method of a plurality of primary channels (M-PCH) compliant with the IEEE 802.11 series; and transmit a frame including the capability information to a communication partner apparatus, wherein the capability information includes at least one of information representing whether the plurality of communication apparatus supports the M-PCH method, and information representing availability of each of the primary channels.