The present disclosure discloses a method for configuring a General Packet Radio Service Tunneling Protocol (GTP) transmission channel, including: acquiring, by a User Plane Centralized Unit (CU-U) responsible for user plane data in a first network element, session related information through an Xn interface, where the Xn interface is an interface between the CU-U and a Control Plane Centralized Unit (CU-C) responsible for control plane data in the first network element; performing a GTP transmission channel configuration by using the session related information; transmitting first related information of a local GTP transmission channel configuration to a second network element; and receiving second related information of a GTP transmission channel configuration transmitted by the second network element. The present disclosure also discloses an apparatus for configuring a GTP transmission channel.

A method and apparatus for robust adjustment of access and mobility management functions are disclosed. In one embodiment, a method includes: receiving a radio access network (RAN)-user equipment (UE) identifier from a first access and mobility management function (AMF), the RAN-UE identifier configured to identify a UE or UE context for a RAN; producing an AMF-UE identifier, the AMF-UE identifier configured to identify the UE or UE context for a second AMF; selecting a transport network layer association (TNLA) link towards a RAN; and sending the AMF-UE identifier to the RAN.

A server associated with a core network may include a memory storing computer-readable instructions; and at least one processor coupled to the memory, the at least one processor configured to execute the computer-readable instructions to, generate a list of preferred instances of a first network function, transmit the list of the preferred instances to a server associated with a third network function, and receive a request to establish a communication session with a selected instance selected from the list of the preferred instances, if the server is associated with a selected instance of a second network function associated with the selected instance of the first network function.

A method for utilizing quality of service information in a network with tunneled backhaul is disclosed, comprising: establishing a backhaul bearer at a base station with a first core network, the backhaul bearer established by a backhaul user equipment (UE) at the base station, the backhaul bearer having a single priority parameter, the backhaul bearer terminating at a first packet data network gateway in the first core network; establishing an encrypted internet protocol (IP) tunnel between the base station and a coordinating gateway in communication with the first core network and a second core network; facilitating, for at least one UE attached at the base station, establishment of a plurality of UE data bearers encapsulated in the secure IP tunnel, each with their own QCI; and transmitting prioritized data of the plurality of UE data bearers via the backhaul bearer and the coordinating gateway to the second core network.

The present disclosure relates to a communication method and system for converging a 5.sup.th-Generation (5G) communication system for supporting higher data rates beyond a 4.sup.th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. According to the disclosure, it is possible to efficiently support data forwarding during conditional handover and dual stack protocol handover.

Various embodiments disclosed herein provide for the provisioning of backhaul links over a 5G N R (New Radio) integrated access and backhaul (IAB) network for access nodes using non-5G radio access technologies. In this way, the IAB network can service devices that are connected to the core network via older 3GPP technologies, or even non-3GPP technologies such as Wi-Fi. An IAB mobile terminal can be provided at the end point access node to make the access node an IAB node. Using an existing internet protocol (IP) routing in the IAB network, or providing for an IP tunnel between the endpoint access node and the core network can then facilitate providing backhaul services for the non-5G access node.

A wireless backhaul connection method, applied to an LTE base station, includes: receiving device type reporting information sent by a wireless backhaul base station located in a coverage of the LTE base station, the device type reporting information indicating that a device type of the wireless backhaul base station is a wireless backhaul type; and configuring, for the wireless backhaul base station according to the device type reporting information, a secondary base station used for the wireless backhaul connection.

To provide a communication procedure for data transmission and/or reception suitable to a CIoT terminal. A communication control method of a terminal apparatus according to the present invention includes the steps of: transmitting an Attach Request message to a core network, receiving an Attach Accept message including at least identification information identifying Signalling Radio Bearer (SRB) and identification information identifying Data Radio Bearer (DRB) from the core network; and establishing the SRB and the DRB.

To provide a communication procedure for data transmission and/or reception suitable to a CIoT terminal. A communication control method of a terminal apparatus according to the present invention includes the steps of: transmitting an Attach Request message to a core network, receiving an Attach Accept message including at least identification information identifying Signalling Radio Bearer (SRB) and identification information identifying Data Radio Bearer (DRB) from the core network; and establishing the SRB and the DRB.

The present disclosure pertains to a base station (BS) apparatus configured to provide communication for one or more user equipment (UEs). Some embodiments of this apparatus may include: a BS networking device configured to access actual wireless data pertaining to actual UEs and to access simulated wireless data pertaining to simulated UEs; an interface controller communicably interposed between the BS networking device and the UEs, the interface controller being configured to control the access to the actual wireless data and the simulated wireless data; and a bridging device configured to convert between a wireless protocol used by the UEs and a wired protocol used by the BS networking device.