A system is disclosed in which a data network is associated with an application function (AF). When there is a change of data network access identifier (DNAI), a Session Management Function (SMF) sends a notification of a user plane management event to the application function (AF), and when a target data network is associated with another application function (target AF), the SMF also sends a notification of a user plane management event to the target AF.

A system is disclosed in which a data network is associated with an application function (AF). When there is a change of data network access identifier (DNAI), a Session Management Function (SMF) sends a notification of a user plane management event to the application function (AF), and when a target data network is associated with another application function (target AF), the SMF also sends a notification of a user plane management event to the target AF.

An electronic clock which is a communication device includes: a transceiver configured to communicate with another communication device including first software and second software; and at least one processor. The processor: controls the transceiver to perform a certain communication with the first software; and causes, after the certain communication ends, the transceiver to transmit a notification for notifying the second software of the end of the certain communication.

An electronic clock which is a communication device includes: a transceiver configured to communicate with another communication device including first software and second software; and at least one processor. The processor: controls the transceiver to perform a certain communication with the first software; and causes, after the certain communication ends, the transceiver to transmit a notification for notifying the second software of the end of the certain communication.

The present disclosure relates to a communication technique for fusing, with an IoT technology, a 5G communication system for supporting a higher data transmission 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, retail businesses, and security and safety related services, on the basis of 5G communication technologies and IoT-related technologies. The present invention, according to one embodiment, may provide a method for requesting a service by a terminal, the method comprising the steps of: receiving, from a first network core, information for instructing a second network priority traffic; on the basis of the information for instructing the second network priority traffic, searching for a cell of a second network; and, if a cell accessible to the second network exists, transmitting a service request to the second network.

The present disclosure relates to a communication technique for fusing, with an IoT technology, a 5G communication system for supporting a higher data transmission 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, retail businesses, and security and safety related services, on the basis of 5G communication technologies and IoT-related technologies. The present invention, according to one embodiment, may provide a method for requesting a service by a terminal, the method comprising the steps of: receiving, from a first network core, information for instructing a second network priority traffic; on the basis of the information for instructing the second network priority traffic, searching for a cell of a second network; and, if a cell accessible to the second network exists, transmitting a service request to the second network.

The present disclosure relates to a paging method and apparatus, a communication device and a storage medium. The method includes: acquiring, by a first communication device, a paging message sent by a first-type network to a second communication device; and sending the paging message to the second communication device by means of a second-type network.

The present disclosure relates to a paging method and apparatus, a communication device and a storage medium. The method includes: acquiring, by a first communication device, a paging message sent by a first-type network to a second communication device; and sending the paging message to the second communication device by means of a second-type network.

A method of operating a wireless communication device (101) comprising a wireless interface (1015) having a capability to use a first identity (451) and a second identity (452), the method comprising: determining a timing offset between a first timing of first paging occasions (396, 396-1) of a first network (100, 100-1) associated with the first identity (451) and a second timing of second paging occasions (396, 396-2) of a second network (100, 100-2) associated with the second identity (452); and based on the timing offset (780, 780-1), transmitting at least one request control message (3002) to at least one of the first network (100, 100-1) or the second network (100, 100-2), to request a timing coordination of paging from the first network (100, 100-2) and paging from the second network (100, 100-2).

A method of operating a wireless communication device (101) comprising a wireless interface (1015) having a capability to use a first identity (451) and a second identity (452), the method comprising: determining a timing offset between a first timing of first paging occasions (396, 396-1) of a first network (100, 100-1) associated with the first identity (451) and a second timing of second paging occasions (396, 396-2) of a second network (100, 100-2) associated with the second identity (452); and based on the timing offset (780, 780-1), transmitting at least one request control message (3002) to at least one of the first network (100, 100-1) or the second network (100, 100-2), to request a timing coordination of paging from the first network (100, 100-2) and paging from the second network (100, 100-2).