290 results about "Non-access stratum" patented technology

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.

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.

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.

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.

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.

The present disclosure relates to mobile communications technologies, and in particular, to a mobile communication method, apparatus, and device. The method includes: receiving, by user equipment UE, a non-access stratum NAS security mode command message from a mobility management entity MME, where the NAS security mode command message carries first verification matching information used to verify UE capability information received by the MME; determining, by the UE based on the first verification matching information, whether the UE capability information received by the MME is consistent with UE capability information sent by the UE to the MME; and if the UE capability information received by the MME is consistent with the UE capability information sent by the UE to the MME, sending, by the UE, a NAS security mode complete message to the MME.

Apparatuses, methods, and systems are disclosed for relocating an access gateway during UE registration. An apparatus 500 includes a transceiver 525 that communicates with a non-3GPP access network and a processor 505 that selects 1005 a first N3IWF and sends 1010 a first message to the first N3IWF, the first message containing a non-access stratum (“NAS”) message that initiates a first registration procedure to a mobile communication network. The processor 505 receives 1015 a first response from the first N3IWF, the first response containing an address of a second N3IWF and an identity of an AMF. The processor 505 sends 1020 a second message to the first N3IWF indicating that the first registration procedure via the first N3IWF is to be stopped and sends 1025 a third message to the second N3IWF indicating that the first registration is to be relocated to the second N3IWF. The processor 505 completes 1030 the first registration procedure via the second N3IWF.

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.

A device (e.g., a WTRU, a network device, such as a device including access and mobility functions (AMF)) may perform one or more of the following actions. The device may send a registration request via non-access stratum signaling. The registration request may include a first duration. The device may receive a registration accept message. The registration accept message may indicate whether the device is to inform the network entity of when the WTRU is available. The device may determine that the unavailable event has ended. The WTRU may determine whether to notify a network entity that the WTRU is available. The device may send a registration update request, for example, based on a determination that the unavailable event has ended and a determination that the WTRU is to notify a network entity of when the WTRU is available. The registration update request may indicate that the WTRU is available.

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.

This application discloses a method for configuring an EPS NAS security algorithm, and a related apparatus in the field of communication technologies. In the technical solution provided in this application, an access and mobility management function entity needs to determine whether a selected EPS NAS security algorithm has been successfully provided to a terminal device, and after determining that the selected EPS NAS security algorithm has not been successfully provided to the terminal device, the access and mobility management function entity provides the selected EPS NAS security algorithm to the terminal device again. According to the technical solution provided in this application, it is ensured that the access and mobility management function entity can successfully configure the EPS NAS security algorithm for the terminal device.

There is provided a method, apparatus and computer program for causing an apparatus to obtain first signaling from a source network access node, the first signaling comprising information for performing a handover of the apparatus to a target network access node, and an indication of a delay to perform non-access stratum, NAS, signaling via the target network access node, and an indication of one or more access stratum security algorithms to be applied to communications between the apparatus and the target network access node, and perform the handover to the target network access node based on the information and the indications.

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.

Methods and apparatuses directed to non-access stratum procedures in connection with layer 2 relaying are provided. A method implemented in a first WTRU, may comprise: receiving, from a second WTRU, a first sidelink transmission comprising a first information indicating an amount of time for the first WTRU to refrain from transmitting, to the second WTRU; determining to reselect to a third WTRU responsive to receiving the first information and based on a second sidelink transmission from the third WTRU; reselecting or autonomous reselecting to the third WTRU; establishing a connection with the third WTRU; and transmitting, to the third WTRU, a third sidelink transmission comprising a second information indicating congestion as a cause for the reselection.

A network device may determine a user equipment route selection policy (URSP) for a first network slice, and may provide the URSP to a user equipment (UE) via non-access stratum (NAS) signaling. The network device may determine an updated URSP for a second network slice that is different than the first network slice, and may determine that the NAS signaling is unavailable for the UE. The network device may provide, based on determining that the NAS signaling is unavailable, the updated URSP to a subscriber identity module (SIM) over-the-air (OTA) system to cause the SIM-OTA system to provide the updated URSP to the UE.