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 equipments. Hence, the user equipment may not proceed with processing a message that is not preferred, thereby lowering power consumption of the user equipment.

Abstract: A random access configuration method, a signal transmission method, apparatuses thereof and a system. The random access configuration method includes: a network device transmits first indication information, the first indication information including at least one of the following information: random access channel configuration index (first index); time gap between random access resources which are neighboring to each other in time domain; invalid random access resource(s); at least two time-domain starting positions of a random access resource; time-domain ending position of a random access resource; number of channel access attempts; and type of channel access. Hence, sufficient time gaps or more opportunities between neighboring random access resources may be guaranteed by the random access configuration method for performing channel detection, and the terminal equipment may perform channel detection accordingly and transmit msg.1 on a random access resource.

Abstract: A random access method and apparatus and a communication system are provided. The method includes: at a first time-frequency resource, a network device receives a first preamble transmitted by a first UE; according to the first preamble, the network device determines a first downlink bandwidth part (DL BWP) transmitting a second message (msg.2A); and the network device transmits msg.2A on the first DL BWP. With this method, according to a time-frequency resource and/or a preamble used by a random access request transmitted by the UE and/or indication information carried by the random access request, the base station may determine a DL BWP feeding back an RAR, thereby ensuring normal access of the UE.

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: An information indication method and apparatus, information detection method and apparatus and communication system. The information indication apparatus includes: a first transmitting unit configured to transmit first indication information to UE indicating a position of a synchronization signal (SS)/physical broadcast channel (PBCH) block (SS/PBCH block) in a signal transmission period (an SS burst set); wherein, the first indication information includes at least two parts of information. Hence, the position of the synchronization signal in the signal transmission period by at least two parts information, so that frame timing at the UE side is supported, and currently existed problems are solved.

Abstract: Disclosed are a wireless communication device and a wireless communication method. The wireless communication device according to one embodiment comprises one or more processors. The processors are configured so as to: on the basis of auxiliary dissemination limitation information about a source device as an information dissemination source, acquire device information about candidate devices capable of establishing direct communication with the source device; on the basis of the locations of the source device and the candidate devices, select a target device for establishing direct communication with the source device from the candidate devices; and determine a transmission resource for direct communication with the target device and generate a transmission resource scheduling indication.

Abstract: A radio link detection method and apparatus and a communication system, the radio link detection apparatus being provided in a terminal equipment and including a detector, when a first timer related to radio link monitoring expires, the detector configured to determine that a radio link using an unlicensed frequency band fails, or, when a higher layer of the terminal equipment receives a random access problem indication and a second timer related to reestablishment is not running, the detector determining that a radio link using an unlicensed frequency band fails. Certain embodiments herein may provide for detecting a radio link failure using an unlicensed frequency band.

Abstract: A contention window adjustment method and apparatus and a communication system. The method includes: transmitting first data by a transmitting device on a carrier, the carrier including two or more bandwidth units; and adjusting a contention window (CW) associated with a bandwidth unit to which the first data correspond by the transmitting device. Certain embodiments herein provide, in a case where data (referred to as first data) are transmitted on a carrier including two or more bandwidth units (such as a BWP/LBT sub-band/LBT channel), by adjusting the CW associated with the bandwidth unit to which the data correspond, a problem that the existing CW adjustment method is inapplicable to a scenario where a carrier corresponds to two or more bandwidth units may be solved.

Abstract: A resource scheduling indication method and apparatus and a communication system. The resource scheduling indication method includes: receiving by a terminal equipment resource scheduling indication information transmitted by a network device and used for indicating an uplink transmission resource, the uplink transmission resource including at least one resource scheduling unit; wherein one resource scheduling unit is a set of subcarrier clusters distributed spaced apart in a frequency domain in an integer number of scheduled bandwidth units; and transmitting uplink data on the uplink transmission resource by the terminal equipment.

Abstract: Methods and apparatuses for data transmission and reception are provided. The method includes: transmitting data scheduling control information by a network device to a terminal equipment; transmitting first indication information used for indicating one or more frequency-domain bandwidth resources by the network device to the terminal equipment; and receiving by the network device the uplink data transmitted by the terminal equipment.

Abstract: A method and apparatus for determining power, in which whether to increase target received power is determined according to a change of either of a selected SSB and a selected CSI-RS. Hence, the selected CSI-RS is taken into account, and power is increased as necessary and useless retransmission is avoided, thereby increasing the success rate of random access and reducing power consumption of the UE.

Abstract: A wireless communication device and a wireless communication method. A wireless communication device for use in a user equipment side includes one or more processors. The processor is configured to: obtain information about movement of the wireless communication device relative to a serving base station thereof; adjust a triggering condition for sending a measurement report for use in cell handover based on the information; and control sending of the measurement report according to the adjusted triggering condition.

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 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: 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: 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: 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: A wireless communication device and a wireless communication method. A wireless communication device for use in a user equipment side includes one or more processors. The processor is configured to: obtain information about movement of the wireless communication device relative to a serving base station thereof; adjust a triggering condition for sending a measurement report for use in cell handover based on the information; and control sending of the measurement report according to the adjusted triggering condition.

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 wireless communication device and a wireless communication method. A wireless communication device for use in a user equipment side includes one or more processors. The processor is configured to: obtain information about movement of the wireless communication device relative to a serving base station thereof; adjust a triggering condition for sending a measurement report for use in cell handover based on the information; and control sending of the measurement report according to the adjusted triggering condition.