Abstract: A relay device first receives a data packet from a network device through a first link, and sends the data packet to user equipment through a second link. A protocol stack of the relay device consists of a physical layer, a media access control layer, and a segmentation function or a resegmentation function of a radio link control layer; a protocol stack of the relay device consists of a physical layer, a media access control layer, a segmentation function or a resegmentation function of a radio link control layer, and an adaptation layer; or a protocol stack of the relay device consists of a physical layer and a hybrid automatic repeat request function of a media access control layer. The first link is a wireless communication link between the network device and the relay device, and the second link is a wireless direct communication link between the relay device and the user equipment.

Abstract: A communication method, a device, and a system, the method including sending, by a terminal device that supports a first user identity and a second user identity, first information to a first access network device using the first user identity, the first access network device being an access network device to which a first cell belongs, where the first cell is a primary cell in which the terminal device communicates with the first access network device by using the first user identity, where the second cell is a cell on which the terminal device camps using the second user identity, and the first indication information indicates that the first user identity and the second user identity that are supported by the terminal device share capabilities of the terminal device, and receiving first configuration information from the first access network device using the first user identity.

Abstract: This application discloses a communication system including a master base station and a secondary base station, both connecting with a terminal. In the communication system, the master base station sends a first message to the secondary base station for allocating transmission resources for one or more flows to be transmitted between the secondary base station and a terminal, wherein the first message carries one or both of: identification information of each flow to be transmitted, and information of a data radio bearer (DRB) associated with each flow to be transmitted, then the secondary base station may determine a mapping relationship between a DRB and an admitted flow according to the first message. Moreover, the master base station sends DRB configuration information to the terminal. Therefore, requirements of 5G communication systems for QoS management of information transmission in a dual connectivity scenario can be met.

Abstract: The converter includes a primary-side winding, a secondary-side winding, a resonant inductor, a resonant capacitor, and a noise suppression network. The primary-side winding and the secondary-side winding form a transformer. The noise suppression network is connected between a primary-side quiescent point and a secondary-side quiescent point. The primary-side quiescent point is a direct current stable potential at an input terminal of the DC/DC converter. The secondary-side quiescent point is a direct current stable potential at an output terminal of the DC/DC converter. A first parasitic capacitance between a first terminal of the primary-side winding and the secondary-side quiescent point is equal to a second parasitic capacitance between a second terminal of the primary-side winding and the secondary-side quiescent point. A suppression current is generated by the noise suppression network, and has a direction opposite to a direction of a total noise current generated by the resonant inductor.

Abstract: Embodiments of the present invention disclose a power converter and a related system. The power converter includes a controller and a power conversion circuit. The power conversion circuit is configured to convert an input power of an input power supply into an output power of a load, where the input power supply is an external power supply connected to the power converter. The controller is configured to control on/off of the first switch element, to implement connection/disconnection between the input power supply and the inductive element; and control the unidirectional conduction circuit to be turned on before the first switch element is turned on in the power conversion cycle.

Abstract: This application discloses a communication method, including: a terminal obtains a current flight parameter, and determines a target conditional handover configuration from a candidate conditional handover configuration group based on the current flight parameter, where the target conditional handover configuration is used to determine a second cell that the terminal expects to access. In this process, because the candidate conditional handover configuration group generated by the access network device to which a first cell belongs corresponds to the flight-related parameter, the terminal obtains the target conditional handover configuration in the candidate conditional handover configuration group based on a matching result between the current flight parameter and the flight-related parameter. In this way, accuracy of obtaining the target conditional handover configuration is improved, and efficiency of handover to the second cell is improved.

Abstract: Embodiments of this application disclose a relay communication method and a communications apparatus, and relate to the field of communications technologies, to resolve a problem that communications system performance is unable to be met because remote UE selects relay UE to forward data in existing relay communication. The method includes a network device obtains a measurement report that includes signal quality of a sidelink (sidelink, SL) between first user equipment and at least one second user equipment and a radio network identifier of the at least one second user equipment. The network device selects target relay user equipment, of the first user equipment, from the at least one second user equipment based on the measurement report and selection assistance information associated with each second user equipment.

Abstract: This application discloses a wireless communication method, a wireless communications apparatus, and a wireless communications system. The wireless communication method includes: receiving, by a terminal, downlink configuration information from a base station, where the downlink configuration information is used to indicate a configuration of a downlink control message, the configuration of the downlink control message includes a format of the downlink control message, and the downlink control message is used to carry service data to be transmitted to the terminal; and receiving, by the terminal, the downlink control message from the base station based on the configuration of the downlink control message.

Abstract: The present disclosure relates to data transmission methods. One example method is applied to a first communications device or a chip in the first communications device. The method includes obtaining first data, and sending, to a second communications device, a first message including the first data and a type identifier, where the type identifier is used to indicate a type of the first data, and the type of the first data includes at least one of user plane data, a status report, a control plane message, and a radio resource control RRC message of a terminal.

Abstract: A method applied to an application scenario in which the terminal device initiates connection reestablishment, comprises: selecting a first cell; when a radio access technology (RAT) of the first cell is the same as a RAT of a source cell, sending, a first message to a reselected radio access network device, and receiving a second message from the reselected radio access network device, wherein the second message is used to indicate the terminal device to establish a connection to the reselected radio access network device.

Abstract: Systems and methods that describe a graph database system with an online component and an offline component, are provided. Write events that modify a first graph in a real-time graph database included in the online component are received. Graph logs that include changes to the first graph in the real-time graph database caused by the write events are generated. The graph logs are transmitted to an offline component of the graph database system in a chronological order. A second graph in the offline component is modified using the graph logs. The first graph and the second graph are instantiated using a graph schema.

Abstract: The present invention discloses a low-yield-ratio ultra-high-strength high-toughness steel for pressure hulls and a preparation method therefor, wherein the chemical components by weight percentage are: 0.05%-0.10% of C, 0.15%-0.35% of Si, 0.60%-1.00% of Mn, 0.10%-0.50% of Cu, 0.10%-1.00% of Mo, 0.40%-0.70% of Cr, 0.05%-0.15% of V, 5.00%-10.00% of Ni, and the balance of Fe and unavoidable impurities. The technical solution of the present invention adopts secondary quenching heat treatment, the first quenching is performed to achieve complete austenitizing, and then the second quenching and tempering are performed to finally obtain complex phase structures such as tempered martensite, critical ferrite and retained austenite, so as to meet the performance index requirements of low yield ratio, ultra-high strength and high toughness, and thereby promoting application in practice.

Abstract: Embodiments of this application provide an MBMS service communication method and a base station, and relate to the communication field. The method includes: A source base station obtains first group identity information of an MBMS service of a terminal device in a neighboring cell; and the source base station sends the first group identity information to the terminal device. In this application, after moving to or accessing the neighboring cell, the terminal device may continue to receive service content and information of the MBMS service based on the first group identity information that is of the MBMS service in the neighboring cell and that is obtained from the source base station.

Abstract: Embodiments of the present disclosure disclose a power converter and a related system. The power converter includes a controller and a power conversion circuit. The power conversion circuit is configured to convert an input power of an input power supply into an output power of a load, where the input power supply is an external power supply connected to the power converter. The controller is configured to control on/off of the first switch element, to implement connection/disconnection between the input power supply and the inductive element; and control the unidirectional conduction circuit to be turned on before the first switch element is turned on in the power conversion cycle.

Abstract: A communication method and a communications apparatus, where the method includes: first determining, by a terminal, a first radio access technology for establishing a Radio Resource Control (RRC) connection; and then determining, by the terminal based on access information, a first cause value for establishing the RRC connection, where the first cause value is a cause value of the first radio access technology, and the access information includes at least one of an access identity (AI), an access category (AC), or a second cause value of a second radio access technology. After the terminal determines the first cause value, the terminal sends a first message used to establish the RRC connection, and uses the first message to carry the first cause value.

Abstract: Embodiments of this application disclose a session establishment method, a data transmission method, and a related apparatus. A first device receives a first message sent by a second device. The first device establishes a first session with a third device based on the first message. The first message carries a first identifier and a second identifier, and the second identifier indicates information about a group to which the first identifier belongs. A fourth device is determined based on the second identifier. This improves fourth device determining efficiency, thereby improving data transmission efficiency.

Abstract: The present disclosure relates to network access methods, terminal devices, and network devices. One example method includes sending a first message to a network device, where the first message includes first indication information, and the first indication information is used to indicate a type of a core network to be accessed by a terminal device, and receiving a second message sent by the network device, where packet data convergence protocol is used for the second message, and version of the packet data convergence protocol corresponds to the type of the core network.

Abstract: Embodiments of the present disclosure disclose a power converter and a related system. The power converter includes a controller and a power conversion circuit. The power conversion circuit is configured to convert an input power of an input power supply into an output power of a load, where the input power supply is an external power supply connected to the power converter. The controller is configured to control on/off of the first switch element, to implement connection/disconnection between the input power supply and the inductive element; and control the unidirectional conduction circuit to be turned on before the first switch element is turned on in the power conversion cycle.

Abstract: Embodiments of this application provide a communication method, a terminal and a base station. The method includes: receiving, by a terminal, a scheduling request resource configuration sent by a base station, where the scheduling request resource configuration indicates an uplink resource type or logical channel information; and sending, by the terminal, a scheduling request to the base station via a target scheduling request resource based on the scheduling request resource configuration and uplink data, where the target scheduling request resource indicates a target uplink resource type, and the scheduling request resource configuration includes the target scheduling request resource.

Abstract: A processor and a power supply ripple reduction method are provided. The processor is connected to a power supply and an external memory and includes a controller, a power control unit and a processing unit. The processing unit includes an input buffer, an arithmetic unit, and an output buffer. The controller is used to determine an initial waiting cycle number N1 and a waiting cycle decrement number N2 of the processing unit. The power supply control unit is used to transmit, when the processor starts operations, a first control signal to the processing unit according to N1 and N2. The processing unit reads, upon receiving the first control signal, data to be processed from the external memory (12), buffers the read data in the input buffer, transmits the buffered data from the input buffer to the arithmetic unit to perform computation, and saves a computation result into the output buffer.