Abstract: A method includes detecting, using a session management function (SMF) at a core network component, an N4 session failure between the SMF and a User Plane Function (UPF) at the core network component, initiating, using the SMF, a timer for establishing an N4 session between the SMF and the UPF, maintaining, using the SMF, a user equipment connected to a network in an idle state while the timer is active, attempting, using the SMF, to establish the N4 session while the timer is active, and bringing, using the SMF, the user equipment back to an active state after the N4 session is established.

Abstract: Provided herein are techniques to facilitate handling Radio Access Network (RAN) failures in a mobile networking environment. In one example, a method may include obtaining, by an access management node from a session management node of a mobile network, a subscription request for the session management node to be notified regarding reset of a radio node of a wireless wide area (WWA) radio access technology (RAT) type; determining, by the access management node, that a particular radio node of the WWA RAT type has been reset; and providing, by the access management node to the session management node, a notification indicating that the particular radio node of the WWA RAT type has been reset.

Abstract: A method includes detecting, using a session management function (SMF) at a core network component, an N4 session failure between the SMF and a User Plane Function (UPF) at the core network component, initiating, using the SMF, a timer for establishing an N4 session between the SMF and the UPF, maintaining, using the SMF, a user equipment connected to a network in an idle state while the timer is active, attempting, using the SMF, to establish the N4 session while the timer is active, and bringing, using the SMF, the user equipment back to an active state after the N4 session is established.

Abstract: NF Consumer authorization with model-D indirect communication between NF Consumer and NF Producer is a big challenge, as the number of SCPs in the network are typically very small compared to the number of NFs. The concepts disclosed herein optimize the NF Consumer authorization with model-D indirect communication, and allow the SCP to handle authorization for large numbers of NFs and slices per NFs without the strain on the SCP. The concepts disclosed further permit a NF Consumer to reuse an access token for different sessions, while reducing the resource requirements on the SCP.

Abstract: A system is provided for supporting roaming between LTE EPC network and 5G network of a first mobile network operator by 5GC network of a second network operator. The system may include the EPC network including a serving gateway in communication with a 4G base station being in the EPC network. The system may also include the 5G network of the first mobile network operator including a vSMF in communication with a 5G base station being in the 5G network of the first network operator. The system may also include the 5GC network of the second network operator including a hSMF. The vSMF is configured to receive a communication from the serving gateway to anchor mobility between the LTE EPC network and the 5G network of the first mobile network operator, and to communicate with the hSMF in the 5GC network of the second network operator using 5G roaming interfaces.

Abstract: The present technology is generally directed to optimizing a non-3GPP untrusted Wi-Fi to 5G system handover followed by Evolved Packet System (EPS) fallback, more specifically, to delaying removal of the Wi-Fi session resources and creating a voice flow as part of the EPS fallback.

Abstract: Disclosed are systems, apparatuses, methods, and computer-readable media to address bearer loss during inter-radio access technology (RAT) handovers. A method includes sending a create bearer request for establishing a service for the mobile device using a first connection; receiving a create bearer response message to setup a second connection for the mobile device to continue the service; and, in response to the create bearer response message, sending an update bearer request message to provide the mobile device with the QoS information associated with the second connection, the QoS information allowing the mobile device to verify an existing QoS flow to continue the service after the handover. In some cases, a user equipment (UE) may delete a mapping between a QoS information when a previous message does not include an evolved packet core (EPC) bearer indicator (EBI) that identifies QoS policies.

Abstract: Disclosed are systems, apparatuses, methods, and computer-readable media to address bearer loss during inter-radio access technology (RAT) handovers. A method includes sending a create bearer request for establishing a service for the mobile device using a first connection; receiving a create bearer response message to setup a second connection for the mobile device to continue the service; and, in response to the create bearer response message, sending an update bearer request message to provide the mobile device with the QoS information associated with the second connection, the QoS information allowing the mobile device to verify an existing QoS flow to continue the service after the handover. In some cases, a user equipment (UE) may delete a mapping between a QoS information when a previous message does not include an evolved packet core (EPC) bearer indicator (EBI) that identifies QoS policies.

Abstract: A method comprises: at source network functions of a source public land mobile network (PLMN) (source PLMN): executing an attach procedure by which user equipment attaches to the source PLMN and establishes a data session with a data network; upon detecting a roam of the user equipment from the source PLMN to a target PLMN, accessing an inter-PLMN handover indicator that indicates whether a seamless inter-PLMN handover is allowed or is not allowed for the data network; and selectively performing the seamless inter-PLMN handover of the data session from the source PLMN to the target PLMN as directed by the inter-PLMN handover indicator.

Abstract: The present technology is generally directed to optimizing a non-3GPP untrusted Wi-Fi to 5G system handover followed by Evolved Packet System (EPS) fallback, more specifically, to delaying removal of the Wi-Fi session resources and creating a voice flow as part of the EPS fallback.

Abstract: The present technology is generally directed to optimizing a non-3GPP untrusted Wi-Fi to 5G system handover followed by Evolved Packet System (EPS) fallback, more specifically, to delaying removal of the Wi-Fi session resources and creating a voice flow as part of the EPS fallback.

Abstract: Disclosed are systems, apparatuses, methods, and computer-readable media to address bearer loss during inter-radio access technology (RAT) handovers. A method includes sending a create bearer request for establishing a service for the mobile device using a first connection; receiving a create bearer response message to setup a second connection for the mobile device to continue the service; and, in response to the create bearer response message, sending an update bearer request message to provide the mobile device with the QoS information associated with the second connection, the QoS information allowing the mobile device to verify an existing QoS flow to continue the service after the handover. In some cases, a user equipment (UE) may delete a mapping between a QoS information when a previous message does not include an evolved packet core (EPC) bearer indicator (EBI) that identifies QoS policies.

Abstract: A system is provided for supporting roaming between LTE EPC network and 5G network of a first mobile network operator by 5GC network of a second network operator. The system may include the EPC network including a serving gateway in communication with a 4G base station being in the EPC network. The system may also include the 5G network of the first mobile network operator including a vSMF in communication with a 5G base station being in the 5G network of the first network operator. The system may also include the 5GC network of the second network operator including a hSMF. The vSMF is configured to receive a communication from the serving gateway to anchor mobility between the LTE EPC network and the 5G network of the first mobile network operator, and to communicate with the hSMF in the 5GC network of the second network operator using 5G roaming interfaces.

Abstract: Presented herein are efficient techniques through which a session management function (SMF) may obtain, from a user plane function (UPF), an error indication associated with a user equipment (UE) for which a handover has been initiated from a Fourth Generation (4G) network to a Fifth Generation (5G) network. The SMF function initiates a timer in response to receiving the error indication. The SMF function stops the timer and processes a request when the request is obtained before an expiration of the timer and processes the error indication when the request is not received before the expiration of the timer.

Abstract: The present technology is generally directed to optimizing a non-3GPP untrusted Wi-Fi to 5G system handover followed by Evolved Packet System (EPS) fallback, more specifically, to delaying removal of the Wi-Fi session resources and creating a voice flow as part of the EPS fallback.

Abstract: Fifth Generation (5G) standards specify use of a Subscription Concealed Identifier (SUCI) (i.e. a concealed identity) for a user equipment (UE) during initial registration, where the SUCI is derived from a Subscription Permanent Identifier (SUPI) of the UE. Given the identity concealment and use of different identities on different interfaces in a 5G network, maintaining subscriber state with a stateless network architecture may be challenging. Accordingly, one or more techniques and mechanisms are provided herein for subscriber management with a stateless network architecture in a 5G network, even without the need to maintain intermediate states of a UE in an external data store. The one or more techniques and mechanisms may be provided in relation to processing of Next Generation (NG) Application Protocol (NGAP) signaling messages at an access and mobility management function (AMF), and in particular, in relation to a registration procedure for the UE.

Abstract: Fifth Generation (5G) standards specify use of a Subscription Concealed Identifier (SUCI) (i.e. a concealed identity) for a user equipment (UE) during initial registration, where the SUCI is derived from a Subscription Permanent Identifier (SUPI) of the UE. Given the identity concealment and use of different identities on different interfaces in a 5G network, maintaining subscriber state with a stateless network architecture may be challenging. Accordingly, one or more techniques and mechanisms are provided herein for subscriber management with a stateless network architecture in a 5G network, even without the need to maintain intermediate states of a UE in an external data store. The one or more techniques and mechanisms may be provided in relation to processing of Next Generation (NG) Application Protocol (NGAP) signaling messages at an access and mobility management function (AMF), and in particular, in relation to a registration procedure for the UE.