Abstract: A method and apparatus for transmitting uplink data and a communication system. The method includes a terminal equipment transmits uplink data in a manner of PUSCH repetition type B, at least one transmission occasion of the uplink data being associated with two TRPs, wherein an RV of the at least one transmission occasion of the uplink data is derived according to the two TRPs. When uplink data are transmitted with multiple TRPs, the uplink data are transmitted according to corresponding RVs, thereby enhancing reliability of transmission the uplink data, or, the uplink data are transmitted according to a corresponding frequency hopping pattern, so that transmission of the uplink data may make full use of frequency diversity gain, thereby improving reliability accordingly.

Abstract: A message transmitting/receiving apparatus and method and a communication system. The message transmitting method includes: determining a message type of a message to be transmitted to one or more user equipments; scrambling control information of the message by using an identity to which the message type corresponds; wherein, different identities correspond to different message types; and transmitting data information of the message and the scrambled control information to the one or more user equipment.

Abstract: Methods and apparatuses for transmitting and receiving uplink signals. The method for transmitting includes: receiving by a terminal equipment a first signal transmitted by a network device, the first signal being at least used for the terminal equipment to determine whether to perform channel detection and/or how to perform channel detection before transmitting a second signal; and transmitting the second signal by the terminal equipment to the network device by using an uplink resource.

Abstract: A system information reception method and apparatus. The method includes a terminal equipment receives a first synchronization signal block (SSB) transmitted by a network device, the first synchronization signal block being transmitted on an unlicensed or shared spectrum/band, and/or a first bit in ssb-SubcarrierOffset and/or ??+5 in a physical broadcast channel payload contained in the first synchronization signal block being used for indicating a QCL relationship between SSBs or being not used for indicating a first parameter; the terminal equipment determines the first parameter (kSSB) according to the first synchronization signal block; and receives SIB1, associated with the first synchronization signal block, or a second synchronization signal block according to the first parameter.

Abstract: A signal transmission method, signal detection method and apparatuses thereof and communication system. The signal transmission apparatus includes a transmitting unit configured to transmit a synchronization signal (SS) block to a user equipment within a time window of a predetermined position in an SS block transmission period. Hence, UE cell search and measurement time is reduced, complexity at the UE is lowered, power consumption of the UE is lowered, cell handover is sped up, communication interruption is avoided, and currently at least one of existing problems is solved.

Abstract: A method for processing LBT monitoring failures, a method for transmitting preambles, apparatuses thereof and a system. The method for processing LBT monitoring failures includes: a physical layer of a terminal equipment performs LBT monitoring, and indicates an LBT monitoring failure or random access preamble transmission drop or an LBT detection instance failure to an MAC layer or an RRC layer when the physical layer deems that the LBT monitoring fails; and the MAC layer or RRC layer of the terminal equipment performs at least one piece of the following processing according to the indication: performing resource selection; triggering channel selection or BWP switching; triggering a radio link failure; triggering RRC connection reestablishment; and performing counter maintenance.

Abstract: Method and apparatus for indicating an LBT failure. The method is applicable to a terminal equipment and includes: in a case where a lower layer or a higher layer determines that a first condition and/or a second condition are/is satisfied, notifying or indicating the LBT failure by the lower layer to the higher layer; and/or in a case where the lower layer or the higher layer determines that the first condition and/or a third condition are/is not satisfied, not notifying or indicating the LBT failure by the lower layer to the higher layer, or stopping notifying or indicating the LBT failure by the lower layer to the higher layer.

Abstract: A signal transmission method, signal detection method and apparatuses thereof and communication system. The signal transmission apparatus includes a transmitting unit configured to transmit a synchronization signal (SS) block to a user equipment within a time window of a predetermined position in an SS block transmission period. Hence, UE cell search and measurement time is reduced, complexity at the UE is lowered, power consumption of the UE is lowered, cell handover is sped up, communication interruption is avoided, and currently at least one of existing problems is solved.

Abstract: An uplink transmission method and apparatus. The method includes: receiving by a terminal equipment indication information, wherein the indication information does not include an indication field used for indicating RB set, the indication information scheduling uplink transmission on an uplink bandwidth part including at least two resource block sets; and transmitting the uplink transmission on at least one predefined or preconfigured resource block set.

Abstract: A wireless communication method and device and a communication system. The method includes: a terminal equipment receives a downlink data signal at a time unit n, the downlink data signal including activation/deactivation command acting on a secondary cell; and the terminal equipment performs at least one of the following processing: applying corresponding actions not earlier than a time unit n+k+1; applying actions related to a deactivation timer of the secondary cell at the time unit n+k+1; and applying actions related to CSI report after a time unit n+k, the CSI report being related to or corresponding to the activation/deactivation command, and the time unit referring to a time unit corresponding to transmission of an uplink control signal, the uplink control signal carrying HARQ-ACK information corresponding to the downlink data signal.

Abstract: A random access method and apparatus and a communication system. The apparatus includes a first processor circuit, the first processor circuit being configured to: receive resource configuration of contention-free random access, the resource configuration of contention-free random access comprising resource configuration of second type contention-free random access (CFRA); and perform a second type contention-free random access procedure according to the resource configuration of the second type CFRA, wherein the resource configuration of the second type CFRA comprises a second type CFRA preamble index associated with a synchronization signal block (SSB) or a channel state information reference signal (CSI-RS), configuration of a physical random access channel occasion (RO) of a second message (MsgA), and configuration of a physical uplink shared channel (PUSCH) of the MsgA.

Abstract: An uplink transmission method and apparatus. The method includes: calculating a length of cyclic prefix extension according to a length of symbols of a number of a predetermined value preceding a first symbol of uplink transmission, or calculating a length of cyclic prefix extension according to a predetermined value and a predefined symbol length, by a terminal equipment; and transmitting the cyclic prefix extension and the uplink transmission.

Abstract: The present disclosure relates to a wireless communication device and a wireless communication method. The wireless communication device according to one embodiment comprises one or more processors, wherein the processor(s) is/are configured to acquire the type of information to be transmitted via device-to-device communication, wherein the type is one of a plurality of types at least including a first type and a second type; and the processor(s) is/are also configured to determine a resource use manner and a power control manner which are used for transmitting information at least according to the type of the information.

Abstract: A method and apparatus for acquiring uplink transmission timing advance and a communication system. The method includes: a network device obtains a timing advance command value (TA), the TA being related to a first reference subcarrier spacing (SCS) used by a terminal equipment for calculating timing advance (TTA); and the network device transmits a timing advance command (TA command), the TA command including the TA. Hence, the terminal equipment may be assisted in obtaining accurate timing advance of uplink transmission.

Abstract: A device and method for vehicle-to-vehicle communication. The method includes: a source device sends a request message to a base station, the request message being used for requesting the base station to allocating a resource; a node device that is synchronous with the source device sends synchronous information to at least one target device, so that the at least one target device establishes time synchronization with the source device according to the synchronous information, wherein the node device is a road-side device or an in-car device capable of communicating; the source device informs the at least one target device of a resource allocated by the base station; and the source device sends service information to the at least one target device by utilizing the resource.

Abstract: An apparatus for transmitting uplink transmission, configured in a terminal equipment, includes a receiver configured to receive second indication information, the second indication information being used to indicate a duration of a CP extension corresponding to a second uplink transmission, and processor circuitry configured to transmit the second uplink transmission without transmitting the CP extension.

Abstract: A random access power control apparatus and method and a communication system. The random access power control apparatus includes: a first calculating unit configured to, by using a pathloss estimated based on an synchronization signal/physical broadcast channel block and/or a channel state information reference signal (CSI-RS) currently selected by a UE, calculate transmission power used by the UE in transmitting random access preambles. Hence, the UE may be adapted to UE random access procedures in such complex scenarios as multiple beams.

Abstract: Methods and apparatuses for receiving and transmitting a random access response in a 2-step random access. The receiving apparatus includes: a first calculating unit configured to calculate a first RNTI, the first RNTI being different from an RA-RNTI actually used in a 4-step random access; a first detecting unit configured to use the first RNTI to detect downlink control information scheduling a random access response in a monitoring window; and a first receiving unit configured to, when the downlink control information is successfully detected, receive the random access response in a physical downlink shared channel (PDSCH) according to the downlink control information.

Abstract: Embodiments of this disclosure provide a random access method and apparatus and a system. The method includes: a terminal equipment selects (or determines) a first downlink reference signal and/or a second downlink reference signal, there existing a quasi co-location (QCL) relationship between the first downlink reference signal and the second downlink reference signal; and the terminal equipment determines a random access resource according to the first downlink reference signal and/or the second downlink reference signal.

Abstract: Methods and apparatus for transmitting a signal and a communication system. The apparatus includes a receiver configured to: receive a first synchronization signal/physical broadcast channel block (SS/PBCH block, SSB), the first synchronization signal/physical broadcast channel block being not located on a first synchronization raster; and receive physical downlink control channel (PDCCH), the physical downlink control channel (PDCCH) being used to schedule a physical downlink shared channel (PDSCH) for carrying remaining minimum system information/system information block 1 (RMSI/SIB1).