Abstract: This application relates to a discontinuous reception method. In the first time unit, for example, the first symbol, after a hybrid automatic repeat request HARQ feedback occasion of a sidelink HARQ process, a first terminal may start a drx-HARQ-RTT-TimerSL and start a drx-RetransmissionTimerSL when the drx-HARQ-RTT-TimerSL expires. During running of the drx-RetransmissionTimerSL, the first terminal monitors a physical downlink control channel. In this way, sidelink retransmission efficiency can be improved, an increase of a sidelink retransmission delay can be avoided, and sidelink-based applications, such as unmanned driving, automatic driving, assisted driving, intelligent driving, networked driving, intelligent networked driving, and car sharing in the field of artificial intelligence can be better supported.

Abstract: A sidelink resource determining method, an apparatus, and a system, to improve reliability of sidelink data transmission when a first terminal does not receive acknowledgment information for a first data packet from a second terminal. According to the method, when the first terminal determines that the first terminal does not receive the acknowledgment information that is for the first data packet and that is fed back by the second terminal, if the first terminal determines that the second terminal fails to decode the first data packet, the first terminal may determine a sidelink resource used to retransmit the first data packet, so that the first data packet can be retransmitted on the re-determined sidelink resource. In this way, reliability of sidelink transmission is improved. The solution may be applied to fields including unmanned driving, automated driving, driver assistance, intelligent driving, connected driving, intelligent network driving, car sharing, and artificial intelligence.

Abstract: A random access method and apparatus are provided. The method includes sending, by a first terminal side device, a random access preamble to a network side device, receiving, by the first terminal side device, a random access response (RAR) corresponding to the random access preamble, where the RAR includes P temporary cell radio network temporary identifiers (TC-RNTIs), and P is an integer greater than 1, and sending, by the first terminal side device to the network side device based on the RAR, a first message and a demodulation reference signal used to demodulate the first message, where the demodulation reference signal is generated based on a first TC-RNTI, and the first TC-RNTI is one of the P TC-RNTIs.

Abstract: Example cross-link interference (CLI) measurement configuration methods and apparatus are described. In one example method, a first network device receives, from a second network device, a first message that indicates information about a CLI measurement. The first network device configures the CLI measurement for a terminal device based on the first message.

Abstract: This application discloses a data transmission method. The method includes: obtaining a baseline value, wherein the baseline value indicates a time interval between a downlink frame timing and an uplink frame timing, and is associated with a timing advance for sending uplink data; and receiving the uplink data. This application further provides a base station and user equipment.

Abstract: The application relates to allocating transmission resources in communication networks that provide low latency services. A terminal receives, from a base station time-frequency resource division information, which indicates a division of a time-frequency resource that is allowed to be used by another service. The division of the time-frequency resource includes one or more resource units in time domain and one or more resource units in frequency domain. The terminal further receives from the base station time-frequency resource indication information, which indicates that, in the time-frequency resource that is allowed to be used by the other service, at least one time domain resource unit and at least one frequency domain resource unit are occupied by the other service. The terminal communicates with the base station using the time-frequency resource except the at least one time-domain resource unit and at least one frequency-domain resource unit that are occupied by the other service.

Abstract: This application discloses a HARQ process control method and an apparatus, and relates to the field of communications technologies. The method includes: A first terminal apparatus determines that a TB transmitted in a first HARQ process is a first TB transmitted for the last time or a newly transmitted TB; and stops a first timer. Further, the first terminal apparatus sends, to a second terminal apparatus, first indication information used to indicate that the TB transmitted in the first HARQ process is a newly transmitted TB. The second terminal apparatus receives the first indication information, and stops a second timer based on the first indication information.

Abstract: This application provides a communication method and apparatus, to help ensure a transmission reliability and/or communication range requirement. When configuring a transmission resource of a sidelink for a terminal, a network device also configures attribute information of the transmission resource. The attribute information may indicate reliability and/or a communication range corresponding to the transmission resource. The terminal device may select a matched logical channel for the transmission resource based on the attribute information of the transmission resource and attribute information of each logical channel of the terminal device. The attribute information of the logical channel is used to indicate reliability and/or a communication range of the logical channel.

Abstract: A communication method and apparatus are applied to fields such as V2X, vehicle to everything, an intelligent connected vehicle, assisted driving, and intelligent driving. The method includes: a first terminal device determines a first new data indicator NDI based on an identifier of a first destination address and an identifier of a first hybrid automatic repeat request HARQ process, where the first NDI is included in first sidelink control information SCI, and the first SCI is used to schedule first data; and the first terminal device sends, through a sidelink, the first SCI and/or the first data to a second terminal device.

Abstract: This application provides a sidelink configuration method and apparatus, a device, and a storage medium. In one example, before each sidelink transmission is performed, a terminal device at a transmit end sends SCI to a terminal device at a receive end. In this solution, transmission on information needed for sidelink transmissions is performed by using sidelink RRC, so that the terminal device at the receive end obtains a time-frequency resource configuration of sidelink transmissions, and further obtains a HARQ process identifier of each transmission.

Abstract: This application provides a communication method, so that sidelink signaling can be used for transmission of AS configuration information. Specifically, a first terminal device obtains a source identifier allocated to groupcast communication by a second terminal device, where the groupcast communication is communication for a target group, and the first terminal device and the second terminal device belong to the target group. A V2X layer of the first terminal device generates first sidelink signaling, and sends the first sidelink signaling, a first identifier, and a group identifier to an AS of the first terminal device, where the first identifier is a source identifier allocated to the groupcast communication by the first terminal device, and the group identifier is used to identify the target group. The AS sends the first sidelink signaling by using the first identifier as a source identifier and using the group identifier as a destination identifier.

Abstract: A terminal device obtains first configuration information, where the first configuration information includes indication information of a UL MAC CE. Then, the terminal device preferentially sends a UL MAC PDU or an SL MAC PDU based on the indication information, where the UL MAC PDU can be used to transmit the UL MAC CE.

Abstract: A method includes: a first terminal device receives first information from a network device, where the first information includes an indication information of a first unicast connection and a reference signal configuration corresponding to the first unicast connection, the reference signal configuration is used by the first terminal device to send a reference signal to a second terminal device; and the first terminal device sends the reference signal to the second terminal device on a sidelink based on the reference signal configuration.

Abstract: A new multifunctional biomass suspension deflagration test-bed is provided, which includes a closed combustion chamber. An integrated temperature and pressure sensor is arranged in the combustion chamber, and a high-speed camera and a laser concentration-measuring instrument are arranged outside the combustion chamber, which can monitor suspension deflagration. A bottom of the combustion chamber is provided with a hollow mushroom-shaped dispersion nozzle with a tray. A nozzle body is provided with a gas main-flow channel at a center thereof and gas deflected-flow channels arranged around the gas main-flow channel. A mushroom-shaped baffle plate is arranged above the nozzle body. The gas main-flow channel extends upward to the mushroom-shaped baffle plate. A vent hole is formed in a portion of the mushroom-shaped baffle plate which is corresponding to the gas main-flow channel. Each gas deflected-flow channel is inclined outward from bottom to top and directed to the mushroom-shaped baffle plate.

Abstract: A first terminal receives first sidelink (SL) carrier configuration information from a second terminal, the first SL carrier configuration information includes first bandwidth part (BWP) configuration information, and the first BWP configuration information includes one or more first resource pools; the first terminal performs unicast connection communication with the second terminal based on the first BWP configuration information.

Abstract: A fault determining method, includes: a first terminal device monitors a parameter of a sidelink between the first terminal device and a second terminal device, to determine whether a unicast connection on the sidelink satisfies a first condition; and when the unicast connection satisfies the first condition, the first terminal device determines that the unicast connection is faulty.

Abstract: A communication method includes: a first communication apparatus obtains first configuration information and sends the first configuration information to a second communication apparatus, where the first configuration information includes configuration information of a first sidelink radio bearer which is used to carry a first unicast service between the first communication apparatus and the second communication apparatus, and the first sidelink is a radio link between the first communication apparatus and the second communication apparatus.

Abstract: The present invention relates to the field of wireless communications technologies, and provides a method for transmitting a carrier, a base station, user equipment, and a system. The method discloses: sending, by a base station, a second carrier, where the second carrier at least partially shares a same resource area with a first carrier, the resource area includes a plurality of resource elements, and the first carrier and the second carrier occupy different resource elements; and sending, by the base station, blank resource element indication information to user equipment that receives the second carrier, where the blank resource element indication information is used to indicate a position of a resource element occupied by the first carrier in the shared resource area. According to the solutions provided in the embodiments, a resource utilization rate of a communications system is improved, and interference between carriers is avoided.

Abstract: Embodiments provide a communication method, a network device, and a terminal device. Under the method, a network device can send SRS configuration information of a first transmission resource and of a second transmission resource to a terminal device. The first transmission resource is a switching source carrier or bandwidth part. The second transmission resource is a switching destination carrier or bandwidth part. The SRS configuration information of the first and second transmission resource includes a first OFDM symbol set and a second OFDM symbol set respectively. Some and all symbols in the first set and second set may be used by the terminal device to send an SRS on the first and second transmission resource respectively. In various embodiments, the network device configures one or more symbols for the terminal device to transmit an SRS, so that high-frequency channel measurement can be better supported.

Abstract: The application relates to allocating transmission resources in communication networks that provide low latency services. A terminal receives, from a base station time-frequency resource division information, which indicates a division of a time-frequency resource that is allowed to be used by another service. The division of the time-frequency resource includes one or more resource units in time domain and one or more resource units in frequency domain. The terminal further receives from the base station time-frequency resource indication information, which indicates that, in the time-frequency resource that is allowed to be used by the other service, at least one time domain resource unit and at least one frequency domain resource unit are occupied by the other service. The terminal communicates with the base station using the time-frequency resource except the at least one time-domain resource unit and at least one frequency-domain resource unit that are occupied by the other service.