Abstract: This application discloses a notification method and apparatus for returning to a network, and a terminal. The notification method is performed by a terminal, including: determining whether to send a return notification to a network; and when it is determined to send the return notification to the network, sending the return notification to the network.

Abstract: A Conditional Primary secondary cell Change (CPC) configuration method and apparatus, and a communication device are provided. The CPC configuration method includes: receiving, by a master node, first indication information sent by a first secondary node. The first secondary node is a secondary node corresponding to a first target candidate cell. The first target candidate cell is a target candidate cell for an Nth CPC of a terminal. N is a positive integer. The first indication information is used to indicate CPC-related information of an (N+1)th CPC of the terminal when a serving primary secondary cell of the terminal is changed to the first target candidate cell. The CPC configuration method further includes sending, by the master node, a CPC configuration to the terminal based on the CPC-related information of the (N+1)th CPC of the terminal.

Abstract: A state notification method, a device, and a system are provided. The state notification method includes: before the first UE leaves a first network on which the first UE camps, determining, according to leaving notification configuration information, whether to send a leaving notification message; and when determining to send a leaving notification message, sending a leaving notification message to a first network device. The leaving notification message is used to indicate that the first UE will leave the first network, and the first network is a network in which the first network device is located.

Abstract: A method and an apparatus for handling radio link failure and relates to the field of communications technologies. The method for handling radio link failure is applied to a first terminal and includes: detecting a radio link failure between the first terminal and a second terminal; and reporting an indication message of the radio link failure to a serving base station of the first terminal, where the indication message includes at least one of the following information: an identifier of radio link, an indication of radio link failure, or a cause of the radio link failure.

Abstract: A paging message transmission method includes: receiving indication information from a core network device, the indication information is used to indicate a target transmission manner; and sending a first paging message to UE in the target transmission manner. The target transmission manner includes at least one of: for a second paging message of one SIM card, retransmitting the second paging message at X first transmission locations, transmitting the second paging message in an offset manner based on a predetermined offset and/or in a predetermined offset direction, or transmitting the second paging message at a second transmission location. The second transmission location is different from an original transmission location that is used to transmit the second paging message, M and X are integers greater than 1, N is a positive integer, and N is less than or equal to M.

Abstract: A resource request method includes: sending a first buffer status report (BSR) to a network device, the first BSR being used for requesting a second resource from the network device, and the second resource being a resource used for data transmission from a relay user equipment to the network device.

Abstract: A transmission processing method and a terminal are provided. The method includes: transmitting a first message according to a priority of the first message, where the first message is CSI or the first message includes CSI and a non-CSI message, and the CSI is sidelink CSI.

Abstract: An SRS configuration method and apparatus, and a related device. The SRS configuration method in embodiments of this application includes: A first access network device receives a first SRS configuration sent by a location management function LMF. The first SRS configuration includes validity area information. The validity area information is used for indicating coverage of a second access network device that reserves an SRS resource for a terminal when the terminal is released to a radio resource control RRC inactive state.

Abstract: This application discloses a CPAC configuration method and apparatus, and a related product, and relates to the field of communications technologies. The CPAC configuration method in embodiments of this application includes: UE receives target configuration information sent by a network side device, where the target configuration information is used to configure at least one first candidate cell for subsequent CPAC, and the at least one first candidate cell is available for an intra-SN CPC process and an inter-SN CPC process; and the UE performs a first operation to change from a source primary secondary cell PSCell to a target PSCell, where the first operation includes at least one of the following: the intra-SN CPC process and the inter-SN CPC process, and the target PSCell is the first candidate cell of the at least one first candidate cell.

Abstract: A state notification method, a device, and a system are provided. The state notification method includes: before the first UE leaves a first network on which the first UE camps, determining, according to leaving notification configuration information, whether to send a leaving notification message; and when determining to send a leaving notification message, sending a leaving notification message to a first network device. The leaving notification message is used to indicate that the first UE will leave the first network, and the first network is a network in which the first network device is located.

Abstract: A data processing method includes a sending end sending a first packet to a receiving end, where the first packet carries a first indication, and the first indication indicates whether the first packet is integrity protected. The first indication is a ciphertext or the first indication is an integrity-protected ciphertext.

Abstract: A resource configuration method and apparatus, a terminal, a device, and a storage medium, are provided. The resource configuration method, performed by a first network node, includes: obtaining configuration information of an uplink resource of a target cell, where the uplink resource is shared by a plurality of terminals served by the first network node; and sending a first command, where the first command is used to allocate at least a part of the obtained uplink resource of the target cell for a target terminal in the plurality of terminals, and indicate the target terminal to obtain a Timing Advance (TA) value of the target cell based on the uplink resource or perform handover to the target cell based on the uplink resource, and the target cell belongs to a second network node.

Abstract: Embodiments of the present disclosure disclose a TAU method and device based on a mobile IAB node to solve the problem that a terminal device in a cell provided by the mobile IAB node is prone to cause a TAU storm. The method is executable by the mobile IAB node, and includes: receiving first TAC list information; and initiating a TAU procedure based on the first TAC list information in a case that a new TAI is discovered, where the TAU procedure is used by a first AMF to update location information of the terminal device in the cell provided by the mobile IAB node.

Abstract: This application discloses an information reporting method and apparatus, an information receiving method and apparatus, a terminal, and a network-side device. The information reporting method of embodiments of this application includes: performing, by a terminal, measurement on a target cell based on a first configuration, to obtain a measurement result; and reporting the measurement result in a case that a first event is satisfied; where the first event includes: the terminal receives first signaling, and within a first duration after reception of the first signaling, the terminal obtains through measurement that signal quality of the target cell satisfies a first condition.

Abstract: A method for configuring a DRX parameter for a Sidelink, and terminal devices includes: the first user equipment can send the second user equipment a control signaling carrying configuration information, where the configuration information is used to configure a DRX parameter.

Abstract: A secondary key updating method includes determining, by a terminal based on first information in a case of performing a CPC, whether to update a secondary key. The first information includes at least one of the following; a first serial number and/or a second serial number, indication information from a network side device, the indication information being used for indicating whether to update the secondary key, or a configuration identification list, the configuration identification list including an identification of a CPC configuration, and an SN to which a PSCell corresponding to the CPC configuration belongs is the same as or different from an SN to which a current serving PSCell belongs.

Abstract: A message notification method, a terminal, and a network device are provided. The message notification method includes: determining whether a first condition is met; and sending a notification message to a first network when the first condition is met, or skipping sending a notification message to a first network when the first condition is not met. The first condition includes any one of the following: a notification message reporting condition; and a first timer expires or is not running, where the first timer is used to prohibit a terminal from sending the notification message.

Abstract: A message transmission method and apparatus and a device are provided. The message transmission method includes: a sending terminal performs security processing on target content at a target layer, the target layer including a PDCP layer and/or a protocol layer below the PDCP layer; in a case that the target layer includes the PDCP layer, the target content includes at least one of data or signaling generated by the PDCP layer; and in a case that the target layer includes the protocol layer below the PDCP layer, the target content includes at least one of: upper layer data or high layer data received by the target layer, upper layer signaling or high layer signaling received by the target layer, or signaling generated by the target layer. The sending terminal sends a target message, the target message including content from the security processing.

Abstract: A method and an apparatus for handling radio link failure and relates to the field of communications technologies. The method for handling radio link failure is applied to a first terminal and includes: detecting a radio link failure between the first terminal and a second terminal; and reporting an indication message of the radio link failure to a serving base station of the first terminal, where the indication message includes at least one of the following information: an identifier of radio link, an indication of radio link failure, or a cause of the radio link failure.

Abstract: A bearer establishment method, a configuration method, a terminal, and a network side device are provided. The bearer establishment method includes: receiving first information; and establishing, according to a first Layer 2 (L2) configuration parameter of a first Multicast Broadcast Service (MBS), a bearer corresponding to the first MBS, where the first L2 configuration parameter is determined based on the first information.