Whether a detected wireless network is capable of connection using a Fast Initial Link Setup (FILS) method is determined, and handover processing for switching a connection destination to the detected wireless network is performed based on the result of determination.

In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The method may be a method of performing a radio access technology (RAT) network change by a UE. The apparatus may be a UE. In certain configurations, the UE performs first inter-system change from a first radio access technology (RAT) network to a second RAT network. In response to failing the first inter-system change, the UE performs second inter-system change from the second RAT network to a third RAT network by performing an initial attach procedure or an initial registration procedure in the third RAT network.

Systems, methods and computer software are disclosed for providing for providing a 5G mobile network. In one embodiment a method is disclosed, comprising: providing a first base station having a first coverage area for a first Radio Access Network (RAN); providing a second base station having a second coverage area, the second coverage area within the first coverage area of the first base station for an overlay RAN; providing a 5G base station having a third coverage area, the third coverage area within the first coverage area and within the second coverage area and part of the overlay RAN; and determining, by a 5G Interworking Function (IWF) device, which subscribers are to be serviced by the overlay RAN and which subscribers are to be serviced by the first RAN.

Various aspects of the present disclosure relate to reliable industrial internet of things transmissions. An apparatus is configured to transmit a transport block (TB) to a first device over a first communication link, the first communication link comprising a first radio transmission technology interface, detect that the transmission of the TB to the first device over the first communication link failed, and in response to detecting that the transmission of the TB to the first device over the first communication link failed, transmit the TB to a second device over a second communication link, the second communication link comprising a second radio transmission technology interface that is different from the first radio transmission technology interface.

Embodiments of this application provide a file sharing method and a terminal device. The method includes: After receiving a file sharing request of a transmitter device, if a receiver device is currently connected to a 2.4 GHz Wi-Fi network and does not support dual band dual concurrent DBDC, the receiver device establishes a peer-to-peer P2P connection in a target frequency band with the transmitter device, where the target frequency band includes frequency bands of 5 GHz and above; and the receiver device receives, by using the P2P connection, a file sent by the transmitter device. In this way, the transmitter device establishes the P2P connection in a higher wireless frequency band with the receiver device, to prevent another wireless signal in a frequency band of less than 5 GHz from causing interference to the P2P connection between the transmitter device and the receiver device.

The disclosure relates to a method and apparatus for monitoring and changing information about quality of service (QoS) allowed to be supported to a user equipment (UE) in a mobile communication system, and an operating method of a target base station (BS) in the mobile communication system includes receiving, from a source BS, alternative quality of service (QoS) profile (AQP) information, determining whether information matching QoS information allowed to be supported for a UE to be served is included in the AQP information, and when the information matching the QoS information allowed to be supported for the UE to be served is included in the AQP information, transmitting the matching information to an access and mobility management function (AMF).

The disclosure relates to a fifth generation (5G) or sixth generation (6G) communication system for supporting a higher data transmission rate. A method performed by a visited-session management function (V-SMF) in a visited public land mobile network (VPLMN) includes receiving, from an access and mobility management function (AMF) in the VPLMN, a protocol data unit (PDU) session create request message including an indicator for allowing home-routed session breakout (HR-SBO) and an identifier (ID) of the VPLMN after an inter-public land mobile network (PLMN) handover is performed, transmitting, to a home-SMF (H-SMF) in a home PLMN (HPLMN), a PDU session update request message including the ID of the VPLMN and an HR-SBO request message, and receiving, from the H-SMF, a PDU session update response message including an authorization result for the HR-SBO.

A communication control apparatus has at least one processor that performs: by a switching candidate detection unit, detecting a second network as a switching candidate for a communication device connected to a first network; by a service availability determination unit, determining whether or not the second network can continue to provide the service that the first network is providing to the communication device, based on communication between the first network and the second network; and by a connection control unit, switching the connection of the communication device from the first network to the second network, if it is determined that the second network can continue to provide the service to the communication device.

A method and system for providing a fallback solution in a multi-tenant communication system is provided. A cloud-based call processing service receives a voice call initiation request from a first mobile device located at a first communication system. The voice call initiation request includes a request to complete a voice call with a second mobile device located at a second communication system. Resources are allocated at the first communication system and the second communication system. The cloud-based call processing service establishes a call between the first mobile device and the second mobile device. At some point the first communication system determines that it should fallback to single site operation. In fallback mode, call processing functionality is performed at the first communication system for the first mobile device.

The present disclosure relates to methods and apparatus for flexible, security context management during AMF changes. One aspect of the disclosure is a mechanism for achieving backward security during AMF changes. Instead of passing the current NAS key to the target AMF, the source AMF derives a new NAS key, provides the new NAS key to the target AMF, and sends a key change indication to the UE, either directly or through some other network node. The UE can then derive the new NAS key from the old NAS key. In some embodiments, the AMF may provide a key generation parameter to the UE to use in deriving the new NAS key. In other embodiments, the target AMF may change one or more security algorithms.