A registration method, a session establishment method, a terminal, and an access and mobility management function (AMF) entity, where the method includes: sending, by a terminal, a first message to the AMF entity, where the first message includes first information, first network slice selection information, and second network slice selection information, the first information includes information for requesting to establish a protocol data unit (PDU) session, the first network slice selection information is used by the AMF entity to select a first session management function (SMF) entity, and the second network slice selection information is used by the AMF entity to select a second SMF entity; and receiving, by the terminal, a second message from the AMF entity, where the second message includes second information, and the second information includes PDU session establishment accept information.

Provided is a control apparatus including a connection control unit configured to control communication connection with a mobile station, and a handover control unit configured to carry out, in a case where the mobile station is a mobile station of a predetermined type, control over handover of the mobile station to a cell in a frequency band that is predetermined as a frequency band corresponding to the mobile station of the predetermined type.

A capability interaction method and a related device capable of enabling a network device to learn about capability information of an adjacent network device. The method comprises: obtaining capability information of at least one adjacent network device and/or at least one adjacent cell; and determining, on the basis of the capability information of the adjacent network device and/or at least one adjacent cell, a configuration of a radio resource for at least one terminal device.

A redirection method, a communications system, and a communications apparatus, to implement redirection of a terminal between different systems, and further implement redirection between a 5.sup.th generation system (5GS) and an evolved packet system (EPS). The method includes: a mobility management network element in a first system determining, based on a cellular Internet of things (CIOT) feature supported by a terminal in a second system and a CIOT feature preferred by the terminal in the second system, to redirect the terminal to the second system; and the mobility management network element in the first system sending redirection indication information to the terminal, where the redirection indication information indicates the terminal to redirect to the second system.

The present disclosure relates to a communication technique for fusing, with an IoT technology, a 5G communication system for supporting a higher data transfer rate than a 4G system, and a system therefor. The present disclosure may be applied to intelligent services, such as smart homes, smart buildings, smart cities, smart cars or connected cars, health care, digital education, retailing, security and safety-related services, etc. on the basis of 5G communication technologies and IoT-related technologies. Disclosed in the disclosure is a method for measurement report/event operation and network signaling in an UE autonomous handover.

Techniques are described for cell reselection technology. An example wireless communication method comprises transmitting, by a network node, one or more black cell lists to a communication node, where each black cell list describes a range of physical cell identifiers (PCI) of one or more network nodes that are prevented from being used by the communication node for reselection, and where each black cell list is associated with one or more network identifiers (IDs) of the one or more network nodes or an indication of a type of network that indicates a type of service provided by one network node.

This application provides example network resource configuration methods and apparatuses. One example method includes receiving configuration information from a network device, where the configuration information includes information of a first threshold corresponding to at least one candidate cell, and the first threshold includes at least one of a Doppler frequency shift threshold, a timing advance TA rate threshold, or a Doppler frequency shift change rate threshold. A target cell is determined from the at least one candidate cell based on the configuration information. A handover to the target cell is initiated.

This application provides an inter-system handover method and a communication apparatus, and may be applied to an inter-system handover scenario. In a handover process, a source access network device may provide a target access network device with an identity of a terminal device. When determining to add the source access network device as a secondary access network device, the target access network device may send, to the source access network device, a request message for adding a secondary access network device that carries the identity of the terminal device.

This disclosure relates to techniques for a wireless device to autonomously perform certain cell measurements in a wireless communication system. A wireless device may establish a wireless link with a cellular base station. The wireless link may be established according to a first radio access technology. The wireless device may determine whether at least one cell that operates according to a second radio access technology is available at the current location of the wireless device based on information stored by the wireless device. If at least one cell that operates according to the second radio access technology is available, the wireless device may perform one or more cell measurements on a cell that operates according to the second radio access technology.

Aspects of the subject disclosure may include, for example, a method in which a processing system detects user equipment (UE) in communication with a network via a serving cell of the network; the network is configured to facilitate communications by one or more terrestrial UEs and one or more aerial UEs. The system monitors messages from an aerial UE regarding detection of a cell other than the serving cell, and receives information from the aerial UE regarding the detected cell. The method further includes analyzing the information to estimate a first quantity associated with the detected cell location relative to the serving cell and a second quantity associated with a power received at the aerial UE from the detected cell. The method also includes determining, based on the analyzing, whether the aerial UE is an unauthorized aerial UE. Other embodiments are disclosed.