Abstract: The present application provides a method and a device for scheduling multi-flow transmission. The method includes: receiving a MAC layer configuration parameter corresponding to a media access control MAC entity, where when there is one MAC entity, the MAC layer configuration parameter includes at least two sets of mappings, and the mapping includes a first mapping and/or a second mapping; or when there are at least two MAC entities, a MAC layer configuration parameter of each MAC entity includes a set of mapping, and the mapping includes a third mapping and/or a second mapping; and executing a MAC layer function according to the MAC layer configuration parameter, and performing MAC layer data transmission. Embodiments of the present application can satisfy a demand of multi-flow transmission.

Abstract: This application provides a DRX configuration method, a terminal device, a network device, and a communications system. The DRX configuration method includes: receiving, by a terminal device, N discontinuous reception DRX configurations sent by a network device, where the N DRX configurations respectively correspond to N groups of carriers; and when a DRX status of the terminal device is an active state, if M groups of carriers in the N groups of carriers are activated carriers, monitoring, by the terminal device, a physical downlink control channel on a specified carrier based on M DRX configurations corresponding to the M groups of carriers. In the DRX configuration manner, the terminal device simultaneously uses a plurality of DRX configurations in an overlay manner, thereby meeting quality of service requirements of different services sent by the terminal device.

Abstract: Embodiments of this application provide a method, an apparatus, and a system for managing an international mobile subscriber identity (IMSI) status of a terminal device. An IMSI of a second terminal device is activated or deactivated through interaction between a first terminal device and a core network node, so that the second terminal device does not participate in activating or deactivating the IMSI of the second terminal device. Therefore, power consumption of the second terminal device can be reduced, and a requirement of an Internet of Things application scenario can be met.

Abstract: Embodiments of the present invention disclose a method for selecting a control channel, and are applied to a communication system, to enable UE to select a control channel suitable for itself in a multi-control channel communications system. The method includes: listening, by UE, to a first control channel, and measuring a value of a performance parameter of a signal received by using the first control channel, and the first control channel is one of the at least two control channels; and when determining, according to the value of the performance parameter, that the first control channel meets a residence condition, determining the first control channel as a target control channel, where the target control channel is used to receive downlink control information sent by a base station.

Abstract: A method includes: receiving, a target serial number transmitted by a second access network device, where the target serial number is obtained based on a first serial number, the first serial number is a serial number of a first RLC SDU successfully received by the second access network device, the first access network device, the second access network device, and a terminal device each include an RLC entity of a split bearer, a transmission mode of the split bearer is duplicate transmission, and the RLC entities of the split bearer are in an acknowledged mode AM; obtaining a second serial number based on the target serial number, where the second serial number is a serial number of a second RLC SDU, and the first RLC SDU is the same as the second RLC SDU; and marking the second serial number as a successfully received state.

Abstract: This application provides a method for scheduling an uplink transmission resource, and a device. The method includes: determining, by a terminal device, a first scheduling request according to pre-obtained first indication information when a first BSR is triggered because to-be-sent data exists on a first logical channel of the terminal device, where the first indication information is used to indicate a correspondence between a logical channel and a type of a scheduling request, and the first scheduling request includes a type of the first scheduling request; sending, by the terminal device, the first scheduling request to an access network device; and receiving, by the terminal device, first uplink scheduling information sent by the access network device, where the uplink scheduling information is used to indicate a first uplink resource used by the terminal device to send uplink data to the access network device.

Abstract: Embodiments of the present invention provide a cell handover method and a device. so that the target eNB uses a current serving small node as a user plane serving node after UE is handed over and uses the target eNB as a control plane serving node after the UE is handed over; receiving a handover request acknowledgment sent by the target eNB; and sending offloading configuration information of the current serving small node to the current serving small node, and sending RRC reconfiguration information of the UE to the UE, so that offloading configuration is performed separately by the current serving small node and the UE. This avoids a problem that in a cell handover process, a transmission resource required for transmission increases and a delay is relatively great because the current serving small node forwards a large amount of data to the target eNB.

Abstract: A method of cell handover, a method for determining an uplink transmit power, and an apparatus are provided, to strengthen control of a network device over a terminal device. The cell handover method includes: receiving, by a terminal device, an early handover command sent by a network device, where the early handover command is used to instruct the terminal device to determine whether to perform a cell handover; measuring, by the terminal device, a downlink signal sent by the network device and/or a downlink signal sent by another network device, and determining, based on an obtained measurement report and a handover condition carried in the early handover command, whether to perform the cell handover; and executing, by the terminal device, a handover command to hand over from a current serving cell to a target cell if the terminal device receives the handover command sent by the network device.

Abstract: Embodiments of the disclosure provides a BSR communication method and a terminal device. The communication method includes: determining, by a terminal device, a quantity of LCGs currently including to-be-reported buffer data; when determining that only one LCG includes to-be-reported buffer data, determining, by the terminal device, one of a plurality of BSR formats as a first target BSR format, where the plurality of BSR formats are a plurality of formats used by the terminal device to report different BSRs based on different ranges of amount of uplink data in a buffer; and sending, by the terminal device, a target BSR to an access network device using the first target BSR format, where the target BSR is used to indicate an amount of uplink data in a buffer of the LCG.

Abstract: A reverse charging device includes a processor, a standard downstream port (SDP) and a first link on which a charging downstream port (CDP) interface chip is arranged. When it is detected that an adapter is plugged into the SDP, the processor is connected with the SDP through the first link, and the processor, the CDP interface chip, and the SDP form a CDP to perform reverse charging through the CDP and the adapter, wherein the CDP has a current transmission capability higher than the SDP.

Abstract: This disclosure provides an RRC message transmission method and apparatus, a terminal device, and an access network device, and belongs to the field of wireless communications technologies. A first access network device sends first configuration information to a terminal device, where the first configuration information includes multipath configuration information and a first trigger condition, the multipath configuration information includes configuration information of a plurality of second transmission paths, and each second transmission path includes a transmission link between the terminal device and one second access network device and an interface link between the first access network device and the second access network device.

Abstract: A resource scheduling method includes: obtaining, by a terminal device, a first resource configuration parameter from an access network device; determining, by the terminal device, whether a first logical channel (LCH) supports the first resource configuration parameter, where the first LCH is an LCH on which there is to-be-sent data; and if the first LCH supports the first resource configuration parameter, determining, by the terminal device, a resource of the first LCH based on the first resource configuration parameter. According to a resource scheduling method provided in this application, after obtaining the first resource configuration parameter, the terminal device determines the resource of the first LCH by determining whether a mapping relationship exists between the first LCH and the first resource configuration parameter, to map the first LCH to the resource that matches the first LCH. This improves resource utilization.

Abstract: Example communication methods and apparatus in a wireless network are described. One example communication method includes establishing dual connections to a first access network device and a second access network device by a terminal device. A connection that is between the terminal device and the first access network device and that is included in the dual connections is a radio resource control (RRC) connection. The terminal device receives first configuration information sent by the first access network device. The first configuration information includes signaling radio bearer (SRB) configuration information of the second access network device and a trigger condition for using the SRB configuration information. When the trigger condition is met, the terminal device uses the SRB configuration information of the second access network device to establish an RRC connection to the second access network device.

Abstract: This application provides a resource scheduling method, an apparatus, and a system, and relates to the field of communications technologies, to meet scheduling requirements of data transmitted on different logical channels. The method includes: sending, by a terminal device, a BSR to an access network device, where the BSR carries first indication information, and the first indication information is used by the access network device to determine a scheduling mode corresponding to a first logical channel; receiving, by the terminal device, a first uplink grant resource sent by the access network device, where the first uplink grant resource is scheduled by the access network device based on the BSR in the scheduling mode; and sending, by the terminal device, to-be-sent data on the first logical channel to the access network device by using the first uplink grant resource.

Abstract: A data transmission method includes: sending, by a network device, first configuration information to a terminal device, where the first configuration information includes first carrier configuration information and first time configuration information, the first carrier configuration information indicates at least one carrier configured by the network device for a bearer or a logical channel for performing hybrid automatic repeat request, and the first time configuration information indicates a first transmission time unit bundling quantity corresponding to each of the at least one carrier; and sending or receiving, by the network device, data corresponding to the bearer or the logical channel based on the first carrier configuration information and/or the first time configuration information. The data transmission method facilitates low-latency and high-reliability transmission and improves resource utilization.

Abstract: The present invention provides a method and an apparatus tear scheduling a transmission resource in a vehicular network, so as to resolve problems in the prior art that signaling overheads of a base station are increased and load of the base station is increased because a manner of scheduling by the base station is used to obtain a transmission resource. The method is: receiving, by a terminal, micro network system information that is sent by a node and that carries a micro network identifier and a node identifier, so as to access a micro network; when a communication task is generated, determining a target resource scheduling manner according to the communication task; obtaining a target transmission resource in the accessed micro network according to the determined target resource scheduling manner; and eventually sending, based on the target transmission resource, data that corresponds to the communication task.

Abstract: This application relates to the field of communications technologies. Specifically, this application provides a scheduling method. In the method, when a terminal needs to send service data of an ultra-reliable and low latency communications service, the terminal sends a scheduling request to a base station, where the scheduling request carries buffer information in a buffer state report sent by the terminal to the base station in an original scheduling procedure. Therefore, compared with an existing scheduling procedure, in the scheduling method provided in this application, no buffer state report needs to be sent to the base station, thereby reducing steps of the scheduling procedure, and reducing a scheduling latency. To achieve an inventive concept of reducing the steps of the scheduling procedure, this application further provides a scheduling method for simplifying steps of a scheduling procedure.

Abstract: Embodiments of the present invention disclose a data processing method, an apparatus, and a system. The method includes: receiving, by a terminal device, first configuration information sent by a network device, where the first configuration information includes preemption indication information, and the preemption indication information indicates a preemption capability of a first logical channel; before multiplexing of a MAC PDU is completed or a MAC PDU generated by multiplexing is transmitted to a physical layer, when a MAC layer has a first data unit, preempting, by the terminal device for the first data unit based on the preemption indication information, a resource allocated by the terminal device for a second data unit, where the first data unit corresponds to the first logical channel, and the second data unit corresponds to a second logical channel; and multiplexing, by the terminal device, the first data unit by using the preempted resource.

Abstract: Embodiments of the present invention relate to the field of communications technologies, and disclose a method and an apparatus for recovering from a radio downlink failure. The method includes: monitoring a first radio link to determine whether a radio downlink failure occurs on the first radio link, where the first radio link is a currently connected radio link; if it is detected that the radio downlink failure occurs on the first radio link, starting a physical-layer-monitored automatic-recovery process for the first radio link and starting a Radio Link Control RRC connection re-setup process to set up a second radio link; and recovering from the radio downlink failure through either of the physical-layer-monitored automatic-recovery process and the RRC connection re-setup process.

Abstract: The present disclosure provides a data processing method, a node, a structure, and an apparatus. The method includes: receiving, by an aggregation node, a first non-access stratum message sent by user equipment (UE), where the aggregation node includes at least two types of interfaces, and each type of interface is used to receive a first non-access stratum message of one radio access technology (RAT) type; converting, by the aggregation node, the first non-access stratum message into a non-access stratum message in a first format based on a RAT type of the first non-access stratum message, where the first format is a non-access stratum message transmission format supported between the aggregation node and a core-network control plane entity; and sending, by the aggregation node, the non-access stratum message in the first format to the core-network control plane entity. A sink design of the aggregation node saves sending and receiving resources of a core network and improves packet forwarding efficiency.