394 results about "Non-access stratum" patented technology

A wireless device receives, from an access and mobility management function (AMF) in a first non-access stratum (NAS) message, parameters comprising a reporting configuration for a deterministic network (DetNet) node. The wireless device sends, to the AMF and based on the parameters, a second NAS message comprising a report for the DetNet node.

Some embodiments of this disclosure include systems, apparatuses, methods, and computer-readable media for use in a wireless network for communicating data over control plane in a 5G system. For example, some embodiments are directed to a user equipment (UE). The UE includes processor circuitry and radio front end circuitry. The processor circuitry can be configured to transmit, using the radio front end circuitry, a first message for connecting to a 5G network and indicating a capability of the UE relating to Cellular Internet of Things (CIOT). The processor circuitry can be further configured to transmit, using the radio front end circuitry and via a control plane to the 5G network, a second message comprising mobile originated data. The processor circuitry can be further configured to receive, using the radio front end circuitry, a third message from the 5G network.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Embodiments herein provide a method for randomizing signalling during a discontinuous coverage area in a satellite access apparatus by a UE. The method includes registering the UE to the satellite access apparatus through a satellite access network. Further, the method includes receiving a discontinuous coverage wait range from the satellite access network. Further, the method includes detecting a discontinuous coverage in the satellite access apparatus. Further, the method includes determining a random wait time within the discontinuous coverage wait range. Further, the method includes starting a wait timer configured with the determined random wait time based on the determination, when the UE returns to coverage after being out of coverage on the satellite access apparatus and waiting for the expiry or stop of the wait timer to initiate an access stratum (AS) signalling or a Non-access stratum (NAS) signalling on the satellite access network.

A wireless device may be configured to perform a method including receiving, from a time sensitive network (TSN) translator device, a TSN parameter. The wireless device may also send, to an access and mobility management function (AMF), a non-access stratum (NAS) message indicating a request to establish a protocol data unit (PDU) session comprising the one or more TSN parameters. The wireless device may receive, from the AMF, a message indicating acceptance of the PDU session.

An apparatus comprising means for performing: receiving a registration or service request for a user equipment: creating an association between the apparatus and a network function, wherein the association is specific to the user equipment: forwarding the registration or service request to the network function: using the association to receive from the network function or send to the network function at least one of: Non Access Stratum control messages for the user equipment: Access Network control messages for the user equipment.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method performed by a first mobility management entity (MME) which is an onboard MME of a satellite in a wireless communication system is provided. The method comprises receiving, from a user equipment (UE), an attach request message associated with a non stratum access (NAS) procedure; and transmitting, to the UE, an attach accept message for the attach request message, the attach accept message including a wait timer for a subsequent NAS procedure, wherein the subsequent NAS procedure is performed based on an expiration of the wait timer.

Systems and methods are disclosed for enhancing cryptographic security in 5G networks by addressing key management, algorithm selection, and security context consistency. One method ensures uniform cryptographic key lengths during Access and Mobility Function (AMF) changes, maintaining consistent Non-Access Stratum (NAS) security contexts across transitions. Another method focuses on dual connectivity scenarios, ensuring uniform cryptographic key lengths across Master Node and Secondary Node communications by defining a unified cryptographic profile and enhancing capability signaling. Additionally, an entropy-based approach to cryptographic algorithm selection is introduced, incorporating entropy assessment into the capability signaling process. This ensures that selected cryptographic algorithms for Access Stratum (AS) and NAS layers align with the actual entropy of long-term keys, providing true security levels.

According to one embodiment of this specification, there is provided an operation method of user equipment (UE). The method may comprise: upon coming out of an unavailability period, performing a tracking area update (TAU) procedure. The TAU procedure may include transmitting a tracking area update request message. The method may comprise: if a first timer is not running and if the tracking area update request includes unavailability information, but does not include a start of the unavailability period, locally releasing a non-access stratum (NAS) signalling connection, upon completing the tracking area update procedure.

According to one embodiment of this specification, there is provided an operation method of user equipment (UE). The method may comprise: generating an Evolved Packet System (EPS) Mobility Management (EMM) transport message for an initial non-access stratum (NAS) message; and transmitting the EMM transport message with an integrity protected. If the EMM transport message may include a data container, the EMM transport message may be partially ciphered. The EMM transport message may be transmitted if the UE uses an Evolved Packet System (EPS) service with control plane Cellular Internet of Things (CIoT) EPS optimization with overhead reduction.

A method performed by a user equipment (UE) may comprise: receiving a Registration Accept message including a validity time for at least one Single Network Slice Selection Assistance Information (S-NSSAI); establishing at least one PDU (protocol data unit) session associated with the at least one S-NSSAI, if the at least one S-NSSAI is included in an Allowed NSSAI or in a Partially Allowed NSSAI; and not initiating a UE-initiated Non-access stratum (NAS) transport procedure to send a Cellular Internet of Things (CIoT) user data nor a service request procedure to send the CIoT user data, if the at least one PDU session is established for the at least one S-NSSAI included in the partially allowed NSSAI and if a current TAI is not in the list of tracking areas (TAs) for which the S-NSSAI is allowed.

Provided herein are techniques to facilitate multiple sessions for a wireless device with a mobile core network via a trusted WLAN. In one example, a method may include obtaining, by an interworking function of a WLAN, an indication that a wireless device seeks to establish a session with the mobile core network, wherein the indication comprises first parameters associated with the session. The method may further include upon identifying, by the interworking function, that the first parameters match a route selection rule of a plurality of route selection rules for the wireless device, facilitating establishment of the session with the mobile core network based on the first parameters. In one instance, the wireless device is not capable of Non-Access-Stratum (NAS) signaling with the mobile core network via the WLAN.

A user equipment (UE) is configured to receive an indication that a localized service is available at a non-public network (NPN) and transmit a registration request to the NPN. In some cases, the indication that the localized service is available at the NPN is provided in broadcast information. In other cases, the indication that the localized service is available at the NPN is provided in one or more non-access stratum (NAS) signals.

Methods and apparatus are provided for supporting Multimedia priority services (MPS) for SMS over NAS. The method is performed by an Access and Mobility management Function (AMF) or an SMS function (SMSF) used for the UE, and comprises obtaining for the UE subscription data comprising MPS for short message indication and setting a message priority header based on the obtained MPS for short message indication when the MPS for short message indication indicates MPS is to be applied for short message service in messages transmitted between the AMF and the SMSF associated with the UE.

This disclosure provides a User Equipment (UE), including: a transmitter configured to transmit at least one Protocol Data Unit (PDU) session identifier (ID), each of which indicates a PDU session that the UE needs to use in a Non Access Stratum (NAS) Service Request message to a Mobility Management Function (MMF) via an access network (AN) node when the UE has user data to send.

A method for processing small data transmission, a device and a readable storage medium are provided, which relates to the field of communication technology to save air interface resources. The method includes: receiving, by a first access network node, downlink small data transmission (SDT) data and / or downlink non-access-stratum (NAS) signaling of a target terminal; determining, by the first access network node, that an anchor point transfer occurs on the target terminal; and sending, by the first access network node, SDT configuration information to a second access network node, where the second access network node is accessed by the target terminal, and the SDT configuration information is configured to process the downlink SDT data and / or the downlink NAS signaling of the target terminal.

Methods, systems, apparatuses, and computer program products provide network function selection for user equipment via a gateway network node. In an implementation, a single-network slice selection assistance information (S-NSSAI) list is received from a user equipment (UE). Additionally, it is determined whether a network node does not support a non-access stratum node selection function for the UE. Based on a determination that the network node does not support the non-access stratum node selection function for the UE, an initial UE message configured with an information element for the S-NSSAI list is generated, and the initial UE message is caused to be transmitted to a gateway network node to select a core network function for the UE.

This application regards optimization of non-access stratum signaling between a wireless device and a cellular wireless network to reduce network signaling load, conserve local access radio resources, and enhance the user experience of the wireless device. The wireless device proactively releases a packet data network (PDN) connection locally at the wireless device and marks a corresponding radio bearer inactive in a tracking area update request sent to the cellular wireless network to shorten time to complete the PDN connection, reducing network signaling load and freeing up access network resources. The wireless device also proactively releases a NAS signaling connection locally without waiting for a cellular wireless network disconnection when the NAS signaling connection is no longer required by the active subscriber identity module (SIM) of the wireless device, thereby allowing resources to be reallocated if needed to another SIM of the wireless device.

The invention relates to a method for operating a user equipment with a telecommunications network and for communicating with at least two of a plurality of network functions or services of the telecommunications network or of a further telecommunications network, the plurality of network functions or services being able to provide different kinds of network function functionalities, wherein the user equipment is operated using at least a first non-access stratum communication link and a second non-access stratum communication link, the first non-access stratum communication link being established between the user equipment and a first network function or service of the plurality of network functions or services, and the second non-access stratum communication link being established between the user equipment and a second network function or service, wherein the first non-access stratum communication link involves establishing a first non-access stratum security context between the user equipment and the first network function or service and the second non-access stratum communication link involves establishing a second non-access stratum security context between the user equipment and the second network function or service, wherein the operation of the user equipment, using at least the first and second non-access stratum communication links, comprises the following steps: —in a first step, the first non-access stratum communication link as well as the first non-access stratum security context is established using a first non-access stratum endpoint information, and the second non-access stratum communication link as well as the second non-access stratum security context is established using a second non-access stratum endpoint information, —in a second step, the first and second non-access stratum communication links are used between their respective endpoints, wherein a first information element of or transmitted using the first non-access stratum security context is able to be referenced by a second information element of or transmitted using the second considered non-access stratum security context and / or wherein a first information element of or transmitted using the first non-access stratum security context is able to reference a second information element of or transmitted using the second considered non-access stratum security context.

A radio access network (RAN) device receives a first message, where the first message includes identifiers of one or more first network slices, and the identifiers of the one or more first network slices are included in a non-access stratum (NAS) request message sent by a terminal device to a core network (CN) device by using the RAN device. The RAN device sends a second message including network slice redirection information to the terminal device, where the network slice redirection information includes at least one of network slice remapping information or terminal device redirection information, and the network slice redirection information is obtained after the RAN device performs network slice redirection decision-making on the one or more first network slices.

Embodiments of the present disclosure relate to a signal coverage information determination method and apparatus, a communication device, and a storage medium. User equipment (UE) receives broadcast information carrying first signal coverage information sent by a non-terrestrial network (NTN) access network device; the UE receives a non-access stratum (NAS) message carrying second signal coverage information sent by a core network device, the NAS message being related to a configuration update of the UE; and the UE determines third signal coverage information to be adopted by the UE on the basis of the first signal coverage information and the second signal coverage information.

Various aspects of the present disclosure relate to UE, base station and methods supporting AIoT service. In one aspect, a UE triggers an inventory procedure or a command procedure towards AIoT devices. The UE receives at least one of the following from at least one first AIoT device among the AIoT devices: an ID of the at least one first AIoT device or AIoT data. In turn, the UE aggregates at least one of the ID or the AIoT data into a single message at one of the following: an AIoT layer, a NAS layer or an RRC layer of the UE. Then, the UE transmits the message to a node in a CN.

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.

An access and mobility management function (AMF) receives, from a base station, a non-access stratum (NAS) request message of a wireless device comprising one or more single network slice selection assistance information(s) (S-NSSAIs) corresponding to one or more network slices. The AMF determines to perform network slice specific authentication and authorization (NSSAA) for a first network slice of the one or more network slices. The AMF sends, to the base station, based on the determining, an N2 setup message comprising an indication that the first network slice is pending.

The present disclosure provides a system (208), a device (204), and a method (400) for managing a Non-Access Stratum (NAS) sequence number during a transmission of a NAS message in a network. The method (400) includes generating (402) the NAS message including a NAS sequence number and transmitting (404) the NAS message and the NAS 5 sequence number to the network. Further, the method (400) includes determining (406) that a transmission of the NAS message has failed and utilizing (408) the same NAS sequence number to retransmit the NAS message to the network based on the determination. Therefore, the method (400) overcomes the issue of the NAS sequence number jumping caused by lower layer failures during NAS message retransmission. By detecting failures of the NAS message 0 and notifying the NAS layer, the device (204) avoids incrementing the NAS sequence number, ensuring integrity check success at the network.

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.

Embodiments of the present disclosure relate to a communication method, a communication device, a communication system and a program product. The communication method comprises: receiving a first message sent by a terminal, the first message comprising: an identifier of the terminal and first information sent to a second network function; and sending a second message to the terminal, the second message comprising: response information of the first information sent by the second network function to the terminal; wherein the response information of the first information is protected by using a first security context, and the first security context is a security context related to a non-access stratum related to the second network function.