Systems and methods are provided to improve candidate search and measurement in non-standalone (NSA) and standalone (SA) 5G new radio (NR) multi-radio access technology (RAT) environments. For Evolved Universal Terrestrial Radio Access Network (E-UTRAN) NR-dual connectivity (EN-DC), a user equipment (UE) skips 5G band measurements for an initial search or an out-of-service (OOS) search. For SA dual connectivity, the UE avoids 5G remaining band (RBS) scans and limits 5G deviated band search (DBS) scans to bands configured for the carrier.

A first base station (1) is configured to send, to a second base station (2), first configuration information that is necessary to establish a data bearer and a data radio bearer in the second base station (2) for a C/U-plane split scenario. Further, the first base station (1) is configured to send, to a third base station (3), configuration information (e.g., LPN information) regarding the data bearer established in the second base station (2) when a mobile station (4) moves from a first cell (10) to a third cell (30) (S103 and S104). It is thus, for example, possible to contribute to a reduction in wasted signaling when a UE moves between cells in the C/U-plane split scenario.

A communications system, e.g. an Internet-of-Things (IoT) communications system, includes satellite gateways in addition to terrestrial gateways. High QoS end point devices utilize communications via satellite gateway to be able to communicate with a network server when communications with the network server via terrestrial gateways are unavailable or unreliable. Low QoS end point devices may communicate with the network server via terrestrial gateways but are restricted from using the satellite gateways. An additional receive window, corresponding to the satellite gateway, is used for communicating downlink signals from the satellite gateway to the high QoS end point device.

Disclosed are a communication scheme and a system thereof for converging an IoT technology and a 5G communication system for supporting a high data transmission rate beyond that of a 4G system. The present disclosure can be applied to intelligent services (for example, services related to a smart home, smart building, smart city, smart car, connected car, health care, digital education, retail business, security, and safety) based on the 5G communication technology and the IoT-related technology. The present disclosure relates to a method of a session management function (SMF) entity in a communication system.

A network device receives location information for a user equipment device (UE), an application identifier (ID), and a latency requirement associated with a data session involving the UE. The network device retrieves from a database, based on the UE's location information, the application ID, and the latency requirement, Multi-Access Edge Computing (MEC) selection weight values associated with multiple MEC platforms. The network device selects a MEC platform, from among the multiple MEC platforms, based on the retrieved MEC selection weight values, and causes the data session to be established between the selected MEC platform and the UE.

Systems and methods for maintaining a service session in an automotive edge computing environment are disclosed herein. One embodiment computes a first estimation result pertaining to computation resources of a current edge server with which a vehicle is in communication; computes a second estimation result pertaining to link quality; computes a third estimation result pertaining to service quality; compares the first, second, and third estimation results with first, second, and third predetermined thresholds, respectively; selects a new edge server with which to maintain the service session and initiates a service migration request, when the first predetermined threshold is triggered; initiates a wireless access handover request, when only the second predetermined threshold is triggered; and selects a new edge server with which to maintain the service session and initiates a service migration request, when only the third predetermined threshold is triggered and one of two predetermined conditions is met.

Systems and methods to utilize user device network slicing and cell support to manage handover of communications for user device. A request to handover management of a user device from a first cell to a second cell is received. One or more possible cells for the handover are then identified. If the user device is utilizing network slicing, then the second cell is selected from the one or more possible cells based on that cell also supporting network slicing. If the cell supports the same network slice as being utilized by the user device, then the handover of the user device to the second cell is initiated.

A wireless User Equipment (UE) controls a wireless network slice type that has slice requirements. In the UE, source Radio Resource Control (RRC) circuitry exchanges source signaling with a source Access and Mobility Management Function (AMF). During the exchange of the source signaling, target RRC circuitry exchanges target signaling with target AMFs and determines AMF characteristics. The target RRC circuitry compares the AMF characteristics to the slice requirements and selects one of the target AMFs based on the comparison. The source or target RRC circuitry exchange additional target signaling with the selected one of the target AMFs to use the wireless network slice type. User-plane circuitry exchanges user data with the wireless network slice which is controlled by the selected target AMF.

A communication terminal (10) according to the present disclosure includes: a control unit (12) configured to, in a case of a movement from a communication area formed by the 5GS to a communication area formed by the EPS or a movement from a communication area formed by the EPS to a communication area formed by the 5GS, determine whether or not a communication system forming a communication area at a movement destination can satisfy requirements of services; and a communication unit (11) configured to, when it is determined that the communication system forming the communication area at the movement destination can satisfy the requirements of the services, send a connection request message to the communication system forming the communication area at the movement destination.

The disclosed technology is directed towards preventing a handover of a Wi-Fi call to a Fifth Generation (5G) standalone cellular network. In one alternative, a 5G standalone usage setting is disabled on a mobile device when Wi-Fi calling is enabled on the mobile device. In another alternative, a 5G standalone usage setting is disabled on a mobile device when Wi-Fi calling is enabled on the mobile device and the mobile device is connected to a Wi-Fi network, which facilitates camping on a 5G standalone network when the mobile device is not connected to a Wi-Fi network. In yet another alternative, a 5G standalone usage setting is disabled on a mobile device when an evolved packet data gateway (ePDG) tunnel is set up on the mobile device, which similarly facilitates camping on a 5G standalone network when the ePDG tunnel is torn down.