Abstract: A method, a base station, and a system for sending radio resource control (RRC) signaling are provided. The method includes a pico base station and a macro base station participate in configuration and generation of an RRC reconfiguration message; the pico base station establishes only one RRC entity that is used to generate a configuration parameter or an RRC entity; the RRC reconfiguration message cooperatively generated by the pico base station and the macro base station is uniformly sent by the macro base station to a user equipment (UE). According to the application, the UE can support an RRC reconfiguration message sent by the pico base station, only by establishing a signaling radio bearer (SRB) corresponding to the macro base station. Accordingly, design complexity and costs are lowered.

Abstract: This application provides a transmission method and a data transmission apparatus, so as to avoid out-of-order of data packets.

Abstract: This application provides a communication method and apparatus. The communication method includes: receiving measurement configuration information from a network device; determining whether a measurement task requires a measurement gap; and if the measurement task does not require the measurement gap, sending first measurement gap requirement information indicating that the measurement gap is not required to the network device, where the first measurement gap requirement information is used to deactivate or release configured measurement gap configuration information; and/or if the measurement task requires the measurement gap, sending second measurement gap requirement information indicating that the measurement gap is required to the network device, where the second measurement gap requirement information is used to activate or validate measurement gap configuration information corresponding to the second measurement gap requirement information.

Abstract: This application provides a communication method and apparatus. The communication method includes: detecting that a terminal in an inactive state is in an out-of-service state, and determining a target cell of the terminal.

Abstract: A communications method and apparatus. The communications method includes: transmitting a first request to a network device through a first resource, where the first request is used to request beam failure recovery of a first cell or is used to request system information of the first cell, the first resource is a resource of a second cell, and the first cell and the second cell are serving cells of a same terminal; and receiving a first response corresponding to the first request from the network device. Therefore, when a terminal has a plurality of serving cells, the terminal may transmit a request across cells (or across carriers), to improve transmission reliability.

Abstract: Embodiments of the present invention provides a method for managing a high frequency connection in a high frequency network. The method comprises receiving, by a terminal, a connection request message from a low frequency base station, the connection message includes a request for connecting the terminal with a high frequency base station; generating, by the terminal, a response message based on the request and at least one parameter of the terminal; transmitting, by the terminal, the generated response message to the LF base station, wherein the response message is used to determine whether to establish a connection with the HF base station.

Abstract: A communication method, a related device, and a system. The method includes: a first network device receives first information from a terminal device, where the first information includes a first delay and a second delay, the first delay is a delay of the terminal device on a first path, the second delay is a delay of the terminal device on a second path, and data packets transmitted on the first path and the second path belong to a first data radio bearer (DRB). The first network device determines an uplink delay of the first DRB based on the first information, a fourth delay, and a fifth delay, where the fourth delay is a network-side delay on the first path, and the fifth delay is a network-side delay on the second path.

Abstract: This application provides a communication method and apparatus, and relates to the field of communication technologies. The method may include: A network device performs integrity protection on system information by using a first private key, and sends the system information, where the system information includes a first public key corresponding to the first private key and/or an index of the first public key. Correspondingly, a terminal device receives the system information from the network device, and if determining that the first public key is valid, the terminal device verifies integrity of the system information by using the first public key. According to this method, on one hand, the terminal device can effectively identify validity of the system information. On the other hand, because the system information includes the first public key and/or the index of the first public key, flexible update of an asymmetric key can be implemented.

Abstract: Embodiments of this application provide a data processing method, an access device, and a terminal device. The data communication method includes: A first access network device receives a handover request message from a second access network device, where the handover request message is to request a terminal device to hand over from a cell of the second access network device to a cell of the first access network device. The first access network device determines that robust header compression ROHC restriction processing needs to be performed. The data communication method further includes: The first access network device receives at least one packet from the second access network device and performs the ROHC restriction processing on a second packet in the at least one packet. The method can avoid a decompression failure of a terminal.

Abstract: A communication method, apparatus, and system may include terminal device that receives first information from a core network device, where the first information is used to indicate whether the terminal device is to use a power-saving paging discontinuous reception cycle. The terminal device determines a paging discontinuous reception cycle of the terminal device based on the first information. Therefore, the terminal device avoids always selecting a shortest cycle as the paging discontinuous reception cycle, so that the paging discontinuous reception cycle determined by the terminal device is more appropriate, and power saving of the terminal device is facilitated.

Abstract: Embodiments of this application provide an information processing method and an apparatus. When a terminal device accesses or camps on a first cell served by a second network device, the terminal device records and stores first information of the terminal device in the first cell, where the first information may include connection failure report information of a radio link failure (RLF) or a handover failure, and/or measurement information obtained by performing measurement by using a minimization of drive tests (MDT) technology. After accessing a second cell, the terminal device may send, through the second cell, the first information to a first network device to which the second cell belongs, and a RAT corresponding to the second cell is different from a RAT corresponding to the first cell.

Abstract: This application provides a communication method, a communication apparatus, and a terminal device. The method includes a first node that receives a first message of a terminal device that requests to associate the terminal device with the first node. The first node obtains information about a second node, where the second node is a group header of an upper layer group in which the terminal device is located. The first node performs data transmission as a relay between the terminal device and the second node. According to a solution provided in this application, the terminal device can perform normal communication.

Abstract: This application provides a communication method, a terminal, and a base station, so that communication is performed between a terminal and a cell during cell handover. The method includes: receiving, by a terminal from a first base station, a cell identity of a first cell, at least one beam parameter of the first cell, and a resource associated with the at least one beam parameter, where the first cell belongs to a second base station; further, determining a target beam parameter, and sending information on a resource corresponding to the target beam parameter; and receiving a response to the information by using a receive beam associated with the target beam parameter, so that communication can be performed between the terminal and a cell during cell handover.

Abstract: Embodiments of this application disclose a communication method and a communications apparatus. A source base station instructs a terminal to hand over from the source base station to a target base station, and sends, to the terminal, configuration information of a second connection required for communication between the terminal and the target base station. The terminal maintains a first connection for communication with the source base station, and establishes the second connection for communication with the target base station based on the configuration information of the second connection. The solutions in the embodiments of this application reduces latency in a handover process.

Abstract: A method for a handover of a mobile station performed by a source base station and a target base station. The target base station receives a handover request message, from the source base station, in which includes QoS information of the mobile device, radio bearer identifier information of the source base station, and a first mapping relationship between a flow and a radio bearer of the source base station, the target base station acknowledges with a handover acknowledgement message. Therefore resource preparation at the target base station during a handover procedure is improved.

Abstract: This application provides a communication method, a terminal, and an access network device. The method includes: sending, by a terminal in an RRC inactive state, first information to a first access network device, where the first information is used to indicate that the terminal is located in a wireless network area in which the terminal is in the RRC inactive state, and the first access network device is an access network device to which a cell in which the terminal is currently located belongs; receiving, by the terminal, a first message sent by the first access network device; and remaining, by the terminal, in the RRC inactive state based on the first message, or entering an idle state from the RRC inactive state based on the first message. According to the technical solutions of this application, performance of a communications system can be improved.

Abstract: Embodiments of this application provide a communication method, apparatus, and system. The method includes: A terminal device receives first information from a first network device or a second network device, and determines, based on the first information, that it is allowable that the terminal device sends MDT information to the first network device. When it is allowable that the terminal device sends the MDT information to the first network device, the terminal device sends the MDT information to the first network device. This prevents the terminal device from sending the MDT information to the first network device immediately after obtaining the MDT information and avoids disclosure of a network coverage status, thereby effectively and securely using the MDT information.

Abstract: The embodiments of this application provide a communication method and an apparatus, and relate to the field of communications technologies, to successfully report MCG link failure information. The method includes: When a terminal device sends a first data unit to a first access network device via an MCG split bearer, the terminal device determines that an MCG link failure occurs. In addition, the terminal device sends a second data unit to a second access network device via an SCG split bearer, so that the second access network device sends the second data unit to the first access network device, where the second data unit includes information used to indicate the MCG link failure.

Abstract: A coverage adjustment method, apparatus, and system are provided. The method includes: A first network device obtains measurement information for measuring a cell by a terminal device, where the measurement information includes channel state information CSI, radio resource management RRM information, and location information of the terminal device; and the first network device determines a beam coverage adjustment parameter of the first network device based on the measurement information. Accuracy of network coverage adjustment is improved.

Abstract: This application provides a communication method and apparatus, to determine a DRX cycle. The method includes: receiving data in an active time of a current DRX cycle; when a DRX inactivity timer of the current DRX cycle expires, determining a type of a next DRX cycle depending on whether at least some data received in the active time is associated with a DRX short cycle, where if the at least some data is not associated with a DRX short cycle, the next DRX cycle is a DRX long cycle, or the type of the next DRX cycle is the same as that of a DRX cycle previous to the current DRX cycle. When the DRX inactivity timer expires, the type of the next DRX cycle can be more flexibly determined, and may not necessarily be a DRX short cycle. This can save power of a device to some extent.