152 results about "Non-access stratum" patented technology

Embodiments provide novel approaches to handling network slice groups in access stratum and non-access stratum communications in a cellular communication network. Novel slice identification schema can support group-level identification of groups of network slices without individually listing the network slices. Some embodiments implement a slice identifier that supports wildcard slice / service type (SST) options and / or wildcard slice differentiator (SD) options to support wildcard-enabled slice groups. Some embodiments enable use of such wildcard-enabled slice groups in context of unified access control. Some embodiments introduce a novel criteria type to unified access control to expressly support flexible slice grouping.

A method can include sending, by a core network device comprising an access and mobility management function (AMF) to a wireless device, a first non-access stratum (NAS) message via a first base station of a first access of the wireless device. The method can also include sending, by the AMF to the wireless device, a second NAS message via a second base station of a second access of the wireless device. The method can further include receiving, by the AMF from the first base station of the first access, first radio resource control (RRC) configuration parameters of the wireless device for the first access. The method can additionally include sending, by the AMF to the second base station of the second access, the first RRC configuration parameters of the wireless device for the first access while maintaining the first access and the second access for the wireless device.

A method performed by a central unit control plane (CU-CP) network function (NF) for protocol data unit (PDU) session establishment in an end-to-end service-based environment is provided. The method includes receiving, from a user equipment (UE), a non-access stratum (NAS) messages comprising a PDU session establishment request obtaining a decoded NAS message in response to receiving the NAS message, selecting a session management function (SMF) based on the decoded NAS message, receiving, from the selected SMF, PDU session details, and transmitting, to the UE, the PDU session details to facilitate an establishment of the PDU session.

Techniques pertaining to a non-access stratum (NAS) protocol header optimization regarding a transport failure in mobile communications are described. The NAS layer of a user equipment (UE) receives an indication of a transmission failure of a data transport message from a lower layer. In response, the NAS layer performs at least one operation depending on whether the indication is received with or without a tracking area identity (TAI) change and whether a current TAI is or is not in a TAI list. The at least one operation includes one or more of the following: (1) aborting a service request procedure; (2) performing a tracking area updating (TAU) procedure; (3) restarting a data transport procedure; (4) resending the data transport message; (5) aborting the data transport procedure; (6) entering an Evolved Packet System (EPS) Mobility Management (EMM) registered state; and (7) locally releasing a NAS signaling connection and any resource allocated for the data transport procedure.

Enhancements to a Non-Access Stratum (NAS) Protocol may be provided, for example, to transmit user data over a signaling plane. A wireless transmit receive unit (WTRU) may send a first NAS message to a network device that may include a request to send user data via a control plane. The network device may establish the control plane for the WTRU. The control plane may be established without establishing a user plane connection. The network device may determine a maximum transmission rate for the WTRU to send user data via the control plane. The network device may send a second NAS message to the WTRU. The second NAS message may indicate that the control plane has been established for the WTRU and the maximum transmission rate.

A communication method and a communication apparatus, which are used for implementing communication between a terminal and a core network by means of a unified non-3GPP access gateway, thereby reducing the complexity of network deployment. The method comprises: receiving a first message from a terminal, the first message being used for requesting authentication, connection establishment or connection release, and the first message being an internet protocol security (IPSec) message, or the first message being a quick user datagram protocol internet connection (QUIC) protocol message; and sending a second message to a control plane network element, the second message being a non-access stratum (NAS) message determined on the basis of the first message.

A disclosed method may include receiving, by a server of a mobile operator across a first channel, a first International Mobile Subscriber Identity (IMSI) in an initial Non-Access Stratum (NAS) message from a User Equipment (UE) in which an Original Equipment Manufacturer (OEM) embedded the first IMSI such that a second IMSI that the mobile operator provisioned to a subscriber is protected by the first IMSI initially substituting for the second IMSI.

The present disclosure relates to an apparatus configured to perform: receiving, from a base station, a first message comprising: an authentication and key agreement challenge packet, an access stratum security mode command packet, and a non-access stratum security mode command packet; performing successful verification of the authentication and key agreement challenge packet, the access stratum security mode command packet, and the non-access stratum security mode command packet; and transmitting, to the base station, a second message comprising: an authentication and key agreement response packet, an access stratum security mode command complete packet, and a non-access stratum security mode command complete packet.

Disclosed is a method of operating a User Equipment, UE, where the UE is in a non-allowed area, or the UE is not in an allowed area and wherein the UE wishes to request User Plane, UP, resources for a Protocol Data Unit, PDU, in a Non-Access Stratum, NAS, message, the UE includes a specified Information Element, IE, only when the UP resources are for a PDU session for emergency service and wherein the specified IE only indicates a PDU session ID associated with emergency access.

The invention provides a communication method, device and system, and relates to the technical field of mobile communication. The communication method can be executed by core network equipment, and comprises the following steps: receiving capability indication information sent by user equipment, the capability indication information being used for indicating that the user equipment supports a store-and-forward operation; and sending duration indication information of a non-access stratum (NAS) timer corresponding to the store-and-forward operation to the user equipment, wherein the duration indication information is used for configuring the NAS timer of the user equipment. By means of the method, the success and efficiency of the NAS process under the store-and-forward operation can be improved, and the problem that the NAS process of the user equipment fails under the store-and-forward operation is solved.

A method performed by a user equipment (UE) for access barring during disaster roaming in a communication network system is provided. The method includes receiving, by the UE, an access stratum (AS) message from a network apparatus providing disaster roaming services for registered UEs, wherein the AS message comprises at least one of disaster-related information or access barring indication to be applied to inbound disaster roaming UEs, determining, by the UE, whether the UE is barred from using the disaster roaming services from the network apparatus based on the received AS message, and performing, by the UE, one of preventing, by the UE, to attempt to register or send any non-access stratum (NAS) or the AS message on the network apparatus providing the disaster roaming services for registering or sending the NAS or AS signaling message for disaster roaming services, in response to determining that the UE is barred from using the disaster roaming services from the network apparatus; or allowing, by the UE, to attempt to register or send any NAS or the AS message on the network apparatus providing the disaster roaming services for registering or sending the NAS or AS signaling message for disaster roaming services, in response to determining that the UE is not barred from using the disaster roaming services from the network apparatus.

Systems, methods, and circuitries are provided for performing network slice-based prioritization. In one example a UE is configured to receive a non-access stratum (NAS) message configuring one or more network slicing access stratum groups (NSAGs) and providing NSAG priority information. The UE receives a release message that indicates first NSAG / frequency priority information for a first set of one or more NSAG / frequency pairs. The UE receives system information that indicates second NSAG / frequency priority information for a second set of one or more NSAG / frequency pairs. The UE prioritizes frequencies that are included in at least one NSAG / frequency pair belonging to both the first set and the second set while not considering frequencies that are not included an NSAG-frequency pair belonging to both the first set and the second set. The UE performs radio resource management measurements or cell reselection based on the prioritized frequencies.

Various solutions for congestion rejection handling for high priority user equipment (UE) in mobile communications are described. The UE may receive a non-access stratum (NAS) message with a cause value indicating a congestion. The UE may perform a mobility management in an event that it is configured as a high priority apparatus. The performing of the mobility management may include starting a reattempting timer based on a reattempting counter, increasing the reattempting counter, and determining whether to initiate a mobility management procedure based on the reattempting timer.

The embodiment of the application provides an RRC connection method in a SL Relay scene, and belongs to the technical field of communication. The method comprises the following steps: in the case that a Relay UE is in an idle state IDLE or an inactivation state INACTIVE, a non-access layer NAS of the Relay UE receives first request information from an access layer AS of the Relay UE, and the first request information is used for indicating that the Relay UE establishes a NAS connection; and the NAS of the Relay UE sends first information to the AS of the Relay UE according to the first request information, and the first information is used for establishing the NAS connection.

A method includes transmitting, by a core network entity of a core network of a wireless communication system, a non-access stratum (NAS) security mode command (SMC) message to a user equipment (UE), the NAS SMC message including information about security capabilities of the UE, information for establishing a security context between the UE and the core network, and a first NAS security mode message transaction identifier (ID); receiving, by the core network entity from the UE, a NAS security mode completion message including a second NAS security mode message transaction ID; and generating, by the core network entity, a security key based on a comparison of the first NAS security mode message transaction ID and the second NAS security mode message transaction ID satisfying a condition, where the security key is usable to secure communications between the UE and a device of an access network of the wireless communication system.

A method performed by a user equipment (UE) is provided. The method includes receiving a non-access stratum (NAS) container. The UE includes UE NAS modules associated with NAS connections terminated at respective network functions in a serving network, and the NAS container is received with associated information indicates a NAS type of a respective UE NAS module of the UE NAS modules. The method includes reading the associated information that indicates the NAS type to determine the respective UE NAS module, and routing the NAS container to the respective UE NAS module based on the associated information.

A user equipment (UE), a network node and a method are provided for indicating an MM procedure to activate an unavailable period during an enabled non-access stratum (NAS) congestion in a wireless communication network. The method comprises the following steps: detecting that a timer T3346 is running or is stopped; and reporting, by a user equipment (UE), an unavailability message and indicating a start time of the unavailability period while the timer T3346 is running or deactivated.

A method of operating a User Equipment, UE, arranged for communication with a telecommunication network. A Non-Access Stratum, NAS, layer in the UE identifies a slice, identified by a Single Network S

The present application relates to the technical field of communications, and provides a communication method and apparatus. The method comprises: determining a non-access stratum (NAS) message, wherein the NAS message comprises a message header and user data, the message header comprises a security header type information element, and the security header type information element indicates that the NAS message is used for transmitting the user data; and sending the NAS message.

This disclosure provides systems, methods, and apparatus for access control techniques for restricting access from a user equipment (UE) (102) to a non-terrestrial network (NTN). A network entity, such as a satellite 106B or a terrestrial base station 106A, communicates access control information (130) to the UE indicating that access to the NTN is barred based on a traffic type. There are various mechanisms for indicating barring, traffic type, and relationships with NTN. For example, a network entity may indicate barring via a non-access stratum (NAS), a radio resource control (RRC), or a system information message. In some examples, a network entity transmits a UE (User Equipment) Routing Policy (URSIP) with a Routing Policy (URSIP) rule that includes an indicator indicating barring and a traffic descriptor (TD) describing a type of barred traffic. The UE avoids accessing the NTN based on the access control information (160).

A system, satellite and method for performing asynchronous communication in a non- terrestrial communication network are proposed. The system comprises at least one user equipment (UE); a constellation of satellites, with at least one satellite, and a ground network. Each satellite of the constellation comprises a base station configured to communicate with the at least one UE and an onboard core network (CN) element (C-SGN-SAT) to perform a first subset of CN functions, including the functions required by the satellite to handle an S1 interface with the base station and the functions to support Non-Access Stratum (NAS) protocol signaling with the at least one UE. The ground network comprises a ground-based CN element (C-SGN-GND) to perform a second subset of CN functions. The first subset of CN functions and the second subset of CN functions form a complete set of CN functions of a CIoT Serving Gateway Node (C-SGN).

Some embodiments of this disclosure include systems, apparatuses, methods, and computer-readable media for use in a wireless network for operating eMTC (enhanced Machine Type Communication) user equipment (UE) and / or NB-IoT UEs when connected to a 5G Core Network (5GCN). For example, some embodiments are directed to a user equipment (UE). The UE includes processor circuitry and radio front circuitry. The processor circuitry can be configured to receive, using the radio front end circuitry and from a Non-Access Stratum layer (NAS) of a cell, an indication to use a 5G Core Network (5GCN) for the cell. The processor circuitry can be further configured to transmit, using the radio front end, a Radio Resource Control (RRC) connection request in response to the indication to use the 5GCN.

An access network node (12) receives a Non-Access Stratum (NAS) message sent from a User Equipment (UE) (31) and associated with a first Public Land Mobile Network (PLMN) (10). If no control node belonging to a core network (15) of the first PLMN (10) is selectable or available, the access network node (12) forwards the NAS message to a donor control node belonging to a core network (25) of a second PLMN (20). This allows, for example, a core network node belonging to a PLMN different from the PLMN selected by the UE to process the NAS message instead.

The present application relates to but is not limited to the technical field of communications, and provides a data transmission method, an electronic device, and a storage medium. The data transmission method comprises: a user equipment (UE) and a radio access network (RAN) node carry out bottom layer signaling transmission carrying a non-access stratum protocol data unit (NAS PDU).

Techniques pertaining to non-access stratum (NAS) protocol header optimization for control plane (CP) data in mobile communications are described. A user equipment (UE) determines whether or not the UE is allowed to send a user data over a CP to a network with a NAS message with an optimized NAS protocol header when at least one backoff timer is running. Based on the determining, the UE either: (a) transmits the user data over the CP to the network with the NAS message even when the at least one backoff timer is running; or (b) does not transmit the user data.

A method and systems for managing registration of user equipment (UE) during disaster roaming conditions are provided. The method includes receiving, by a network node of a secondary public land mobile network (PLMN), an indication about a termination of a disaster condition, from a primary PLMN, wherein the secondary PLMN provides disaster roaming services to the UE in an evolved packet system (EPS) during the disaster condition in fifth generation system, and transmitting, by the network node to the UE, a non-access stratum (NAS) message that includes radio access technology (RAT) utilization control information and a predefined reject cause prompting the UE to re-attach to the primary PLMN over the 5GS, upon receipt of the indication.

Methods, systems, apparatus, and computer program products for operator control of UE behavior during registration and deregistration with network slices and establishment and release of PDU sessions in a communication system. A network entity may transmit a registration acceptance message to the UE, which includes configuration information including instructions for the UE to request all Single Network Slice Selection Assistance Information (S-NSSAI) configured with Network Slice Selection Assistance Information (NSSAI) or instructions for the UE to request all S-NSSAIs configured by default with NSSAI. Alternatively, the network entity may transmit configuration information to the UE in a downlink non-access stratum transmission message or a UE configuration update message, which includes instructions for the UE to always establish all Protocol Data Unit (PDU) sessions for all data network names associated with a Single Network Slice Selection Assistance Information (S-NSSAI).

Aspects of the present disclosure relate to user equipment (UE) parameter update (UPU) header protection. An apparatus, such as a network device (UE) that implements unified data management (UDM). The UDM sends a request to apply UPU header protection to an authentication server function (AUSF), and sends a UPU transparent container and / or UPU header information to the UE. The UPU transparent container and / or the UPU header information includes an indication that the UPU header is protected. The UE receives a non-access stratum (NAS) message, the NAS message including an indication of UPU header protection, calculates a UPU message authentication code (MAC) using the UPU header as at least one input for UPU protection, and sends an acknowledgement indicating that the UPU header authentication is successful.

A method by an access network node in a non-terrestrial network is disclosed. The method comprises receiving at least one NAS PDU via an available link without triggering establishment of a connection for another link different from the available link in the event that a service link between the access network node and a user equipment (UE) or a feed link between the access network node and a gateway in the terrestrial network is unavailable, the NAS being an abbreviation of an access layer, the feed link being a non-access layer or a non-access layer or a non-access layer or a non-access layer or a non-access layer or a non-access layer or a non-access layer or a non-access layer or a non-access layer or a non-access layer. The PDU is an abbreviation of a protocol data unit; storing at least one NAS PDU until another link becomes available; and forwarding the at least one NAS PDU via the other link when the other link becomes available.

Examples relate to methods, computer programs, and apparatuses for user equipment, UE, a network entity, for a base station, and for a mobile communication system. The method (10) for a user equipment (400), UE, of a mobile communication system (700), the UE (400) supporting two or more non-access stratum, NAS, modes, comprises providing (11) NAS capability information indicating the support of the two or more NAS modes, to a network entity (600) of the mobile communication system (700). The method (10) further comprises receiving (12) an indication on which NAS mode to use in response to the NAS capability information.