Abstract: Emergency services support is indicated to roaming devices in a wireless network. A user equipment (UE) may receive a message from the wireless network indicating at least one public land mobile network (PLMN) that provides emergency services support for devices in limited service. The UE may store, in a non-volatile memory (NVM), an identifier of the at least one PLMN in a whitelist of limited service emergency services support. In response to a trigger in a roaming limited service condition of the UE, the UE may establish an emergency session with a selected PLMN based on the whitelist of limited service emergency services support.

Abstract: Systems and methods provide steering of roaming (SoR) information during a user equipment (UE) mobility registration process. In other systems and methods, instead of triggering mobility and periodic registration, a UE performs initial registration until a valid SoR is received in a visited country or network as long as a subscriber identification module (SIM) or a universal SIM (USIM) of the UE indicates that the UE is expected to receive SoR information due to initial registration in a visited public land mobile network (VPLMN).

Abstract: A technique for determining that a wireless device supports using multiple subscriber identity module (SIM) cards to establish multiple connections to wireless networks, generating a multi-SIM capability message, transmitting the multi-SIM capability message to a first wireless network; and receiving a registration accept signal in response to the multi-SIM capability message, wherein the registration accept signal indicates a first set of features supported by the first wireless network. In another aspect, a technique for a wireless system to receive, via a network interface, a multiple subscriber identity module (multi-SIM) capability message from a wireless device connected to a first wireless network; generate a registration accept signal in response to receiving the multi-SIM capability message, wherein the registration accept signal indicates a first set of features supported by the first wireless network; and send, via the network interface, the registration accept signal to the wireless device.

Abstract: Apparatuses, systems, and methods for reducing wireless device service interruptions. An indication of a disaster condition may be provided to a wireless device. The disaster condition may affect a home public land mobile network of the wireless device. The wireless device may perform cell selection in a manner influenced by the indication of the disaster condition. This may include considering cells associated with a forbidden public land mobile network for the cell selection, or excluding cells associated with the home public land mobile network of the wireless device that are unavailable, for example due to the disaster condition, among various possibilities.

Abstract: This disclosure relates to techniques for performing wireless communications in context of unified access control. A UE may enter an update needed state. The UE may detect a pending communication. The UE may access the network using an access category associated with the pending communication. The UE may complete the update.

Abstract: A network component may perform a user equipment (UE) parameter update (UPU) procedure or a steering of roaming (SoR) procedure for a UE. The network component determines updated parameters for a UE, initiates a timer, wherein the timer expires after a predetermined period of time, integrity protects the updated parameters, transmits the integrity protected updated parameters and an acknowledgement (ACK) request indicator to an access and mobility management function (AMF) of a core network and retransmits the integrity protected updated parameters and the ACK request indicator to the AMF when the timer expires before an ACK is received from the UE or when the UE camps on a second AMF.

Abstract: A user equipment (UE) may perform a UE parameter update (UPU) procedure or a steering of roaming (SoR) procedure based on information received from a home public land mobile network (HPLMN). The UE receives, from a network component, an update container comprising updated parameters for the UE and a counter value associated with the update container, compares the counter value with a stored value and performs an action related to the update container based on at least the comparison of the counter value with the stored value.

Abstract: Apparatuses, systems, and methods for SoR list management and PLMN selection based on an SoR list. A UE may receive an SoR container which may include a list of OPLMNs. The UE may store a prior list of OPLMNs stored on a USIM of the UE on a memory of the UE. The UE replace the prior list of OPLMNs stored on the USIM with the list of OPLMNs included in the SoR container. The UE may consider the prior list of OPLMNs as a lower priority list as compared to the list of OPLMNs stored on the USIM. Additionally, in response to determining to move from a current PLMN, the UE may scan for a new PLMN based on the list of OPLMNs stored on the USIM.

Abstract: Apparatuses, systems, and methods for PDU session handover between cellular and non-cellular access technologies. The UE may determine to transfer one or more on-going PDU sessions from a first RAN to a second RAN based on detection of a mobility condition. The UE may transmit an allowed PDU session status IE to an AMF. The allowed PDU session IE may be transmitted via a registration request when the first RAN supports 3GPP access and the second RAN supports non-3GPP access. The allowed PDU session status IE may be transmitted via service request when the first RAN supports non-3GPP access and the second RAN supports 3GPP access. The allowed PDU session IE may trigger establishment of user plane resources for the one or more on-going PDU sessions via a UPF.

Abstract: Methods and apparatuses are disclosed for requesting and providing service of a network slice deemed essential by a user equipment (UE). The UE transmits a request message to the network indicating that essential services are requested, and identifying the essential network slice. Based on the information in the request message, the serving network communicates with one or more network nodes to determine whether the requested services can be provided. This information is packaged in a response message and transmitted to the UE. If the current network is capable of servicing the requested network slice, then the UE remains with the current network. If not, then the UE initiates a search for an alternative network (PLMN or SNPN) capable of supporting the requested services. A successful search causes the UE to register with the newly-found network, whereas an unsuccessful search causes the UE to re-register with the current network.

Abstract: User equipment devices (UEs) and methods are described for performing single network slice selection assistance information (S-NSSAI)-aware public land mobile network (PLMN) selection in a roaming scenario. A mapping list is received that includes a mapping of a plurality of public land mobile networks (PLMNs) to corresponding S-NSSAI values. The mapping list is received from a home PLMN (HPLMN) of the UE over non-3rd generation partnership (non-3GPP) access, from a server, or from a Universal Mobile Telecommunications Service (UMTS) subscriber identity module (USIM) of the UE. An available PLMN is determined that is mapped to a preferred S-NSSAI value of the UE based on the mapping list. A connection is established with the available PLMN.

Abstract: A mobile terminal device includes a radio processing circuit and a baseband processing circuit adapted to interact with the radio processing circuit. The mobile terminal device is configured to detect network access points on one or more carrier channels using a first radio scan and a second radio scan by obtaining one or more scan results of the first radio scan, each of the scan results of the first radio scan corresponding to a carrier channel targeted for radio scan by the first radio scan, identifying one or more selected scan results from the one or more scan results of the first radio scan, each of the one or more selected scan results of the first radio scan corresponding to a carrier channel targeted for radio scan by the second radio scan, and selecting the one or more selected scan results of the first radio scan as scan results of the second radio scan, and performing mobile communications using the scan results of the first radio scan or the scan results of the second radio scan.

Abstract: A mobile terminal device includes a radio processing circuit and a baseband processing circuit adapted to interact with the radio processing circuit. The mobile terminal device is configured to detect network access points on one or more carrier channels using a first radio scan and a second radio scan by obtaining one or more scan results of the first radio scan, each of the scan results of the first radio scan corresponding to a carrier channel targeted for radio scan by the first radio scan, identifying one or more selected scan results from the one or more scan results of the first radio scan, each of the one or more selected scan results of the first radio scan corresponding to a carrier channel targeted for radio scan by the second radio scan, and selecting the one or more selected scan results of the first radio scan as scan results of the second radio scan, and performing mobile communications using the scan results of the first radio scan or the scan results of the second radio scan.