A method and apparatus provide for attachment for restricted local operator services for an apparatus, such as a user equipment. An attach procedure for the restricted local operator services for the apparatus can be performed. A proxy call session control function address for the restricted local operator services can be received during the attach procedure. A session initiation protocol register request message can be generated. The session initiation protocol register request message can include an indication for the restricted local operator services and can include an internet protocol multimedia public user identification based on an identification of the apparatus. The session initiation protocol register request message to the proxy call session control function address can be sent, the session initiation protocol register request message can include the indication for the restricted local operator services.

A session information processing method includes receiving first information sent by a second electronic device to a target SIM card account of the first electronic device based on a first SIM card account, where the first information carries identifier information of the second electronic device; and in a case that the first electronic device includes a second SIM card account associated with the identifier information, adding the first information to a target session. Session objects of the target session include the first SIM card account, the second SIM card account, and the target SIM card account.

An apparatus includes a transceiver to support a media flow involving a user equipment and an Internet Protocol (IP) Multimedia Subsystem (IMS) network that are connected via a media path that traverses a first realm associated with the user equipment, a second realm, and a third realm associated with the IMS network. In some cases, the apparatus includes a processor to establish a first context to perform interworking between the first realm and the second realm in response to an offer message from the user equipment. The processor later de-allocates the first context in response to receiving an answer message indicating that a second context performs interworking between the first realm and the third realm. In other cases, the processor bypasses allocation of a context to perform interworking between the second realm and the third realm in response to an indication that the media flow is anchored on an incoming side.

Provided is a communication method performed by a user equipment (UE) to receive a paging message, the communication method including registering to a stand-alone non-public network (SNPN), transmitting, to a session management function (SMF) of the SNPN or an access and mobility management function (AMF) of the SNPN, a protocol data unit (PDU) session establishment request message for requesting subscription to a notification service for receiving a paging message of a public land mobile network (PLMN), registering to the PLMN through the SNPN and a non-3GPP inter-working function (N3IWF) of the PLMN, in a case where a paging event occurs when the UE is in an idle state in the PLMN, receiving the paging message from the AMF of the SNPN having received a notification message based on the notification service, and performing a service request procedure based on the paging message.

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.

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.

A method, device, and computer-readable medium are provided for sending, by a customer-premises equipment (CPE) device to a wireless access device via a CPE network interface, an Internet protocol (IP) address lease request, wherein the wireless access device terminates a wireless backhaul connection to a service provider network; receiving, responsive to the IP address lease request, an acknowledge message that includes a requested IP address and a protocol configuration option (PCO) providing identification information for the wireless access device; connecting, via the wireless access device and using the requested IP address, to a bootstrap server device associated with the service provider network; receiving, via the wireless access device, attachment information associated with a network management server and the service provider network; and sending, via the wireless access device, the identification information to the network management server in an attachment procedure using the attachment information.

A method, device, and computer-readable medium are provided for sending, by a customer-premises equipment (CPE) device to a wireless access device via a CPE network interface, an Internet protocol (IP) address lease request, wherein the wireless access device terminates a wireless backhaul connection to a service provider network; receiving, responsive to the IP address lease request, an acknowledge message that includes a requested IP address and a protocol configuration option (PCO) providing identification information for the wireless access device; connecting, via the wireless access device and using the requested IP address, to a bootstrap server device associated with the service provider network; receiving, via the wireless access device, attachment information associated with a network management server and the service provider network; and sending, via the wireless access device, the identification information to the network management server in an attachment procedure using the attachment information.

Various embodiments of the present disclosure provide a method for call setup. The method which may be performed by a session management node comprises receiving an evolved packet system (EPS) fallback indicator from a mobility management node. In an embodiment, the EPS fallback indicator may indicate that a fallback to an EPS for an Internet protocol multimedia subsystem (IMS) voice service is ongoing. The method further comprises reporting an EPS fallback event to a policy charging node, according to the EPS fallback indicator.

The present disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting a higher data transfer rate than 4th generation (4G) communication systems such as long term evolution (LTE). An operating method for a base station in a wireless communication method comprises a step for transmitting a first message to another base station, and a step for receiving a second message from the other base station, the first message comprising information indicating whether the base station supports at least one of an alternative quality of service (QoS) profile function and a QoS flow establishment queue function,