Abstract: A system, e.g., associated with a telecommunications network, includes first and second registry devices. In some examples, the first registry device receives a registration message. The second registry device receives a query specifying a type (NFType) of a network function and forwards the query to the first registry device based at least in part on the NFType. The first registry device responds, and the second registry device forwards the response. In some examples, the query specifies a service class and the second registry device forwards the query based at least in part on the service class. In some examples, the first registry device sends an indication of the registration to the second registry device, and the second registry device responds to the query based at least in part on the received indication and on at least one of an NFType or a service class of the query.

Abstract: Systems, devices, and techniques described herein relate to migrating a communication session from a path including a stressed user plane function (UPF) to a path including a replacement UPF. A communication session may traverse a first path including the first UPF. After establishing the communication session, the first UPF may be determined to be stressed. In response, the communication session can be proactively migrated to a second path including a second UPF. According to various implementations, the existing communication session can be maintained during the migration, thereby substantially eliminating interruptions caused by the stressed first UPF.

Abstract: Systems, devices, and techniques described herein relate to user plane system selection based on latency in mobile networks. In particular, the systems, devices, and techniques can be implemented in fifth generation (5G) mobile networks to provide selection of a user plane function (UPF) based on latency. The UPF can measure a latency toward an access network and provide an indication of the latency to a policy control function (PCF). The PCF can select the UPF based on the indication and can request the UPF to provide services to a user equipment (UE) originating a priority request. In response, the UPF can provide services to the UE.

Abstract: The systems, devices, and methods discussed herein are directed to redirecting mobile traffic of an infected mobile device, or user equipment (UE), to a security network node, which provides a security action for the UE. A mobile session management node may identify the UE as an infected device based on a database maintained at an intelligent redirection node or a security posture indicator received from the UE. The mobile management entity may then create a session with a security network node which redirects mobile traffic of the infected UE to the security network node and provides a security action for the UE.

Abstract: A core network device of a telecommunications network can receive a first request from a consumer network function (NF) and forward the first request to a first provider NF. The device can subsequently detect a violation by the first provider NF of a response criterion. The device can receive a second request and forward the second request to a second, different provider NF in response to the violation. In some examples, the device can later detect that the first provider NF has satisfied the response criterion with respect to a third request. The device can modify load data to increase the proportion of subsequent requests for which the first provider NF is selected. The device can select provider NFs based on the load data. In some examples, a system can include a network registry device that selects NFs based on violation indications received from the core network device.

Abstract: Policy based dual connectivity traffic steering is described herein. A master Long-Term Evolution (LTE) base station may operate in conjunction with a secondary New Radio (NR) base station to provide dual connectivity to user equipment (UE) operating in an environment. The LTE base station can steer traffic between the LTE base station and the NR base station based at least in part on policy information received at the LTE base station. The policy information can indicate, for a particular UE and for a particular Quality of Service (QoS) Class Identifier (QCI), whether the LTE base station can transfer a communication to the NR base station. Thus, traffic steering determinations can be based on the policy information, quality identifiers, device capability, signal strength(s), load level(s), and the like, thereby providing a flexible framework for steering wireless traffic in a dual connectivity environment.

Abstract: A system, e.g., associated with a telecommunications network, includes first and second registry devices. In some examples, the first registry device receives a registration message. The second registry device receives a query specifying a type (NFType) of a network function and forwards the query to the first registry device based at least in part on the NFType. The first registry device responds, and the second registry device forwards the response. In some examples, the query specifies a service class and the second registry device forwards the query based at least in part on the service class. In some examples, the first registry device sends an indication of the registration to the second registry device, and the second registry device responds to the query based at least in part on the received indication and on at least one of an NFType or a service class of the query.

Abstract: Systems, devices, and techniques described herein relate to migrating a communication session from a path including a stressed user plane function (UPF) to a path including a replacement UPF. A communication session may traverse a first path including the first UPF. After establishing the communication session, the first UPF may be determined to be stressed. In response, the communication session can be proactively migrated to a second path including a second UPF. According to various implementations, the existing communication session can be maintained during the migration, thereby substantially eliminating interruptions caused by the stressed first UPF.

Abstract: Systems, devices, and techniques described herein relate to efficient Evolved Packet System (EPS) fallback. A method may include receiving a rejection message that indicates a rejection to set up a call through a 5th Generation (5G) network by a 5G Radio Access Network (RAN). In response to receiving the rejection message, the method may include transmitting a request to establish a dedicated bearer through a 4th Generation (4G) network. A confirmation that the second dedicated bearer has been established through the 4G network may be received within a predetermined time after transmitting the request.

Abstract: A system, e.g., associated with a telecommunications network, includes first and second registry devices. In some examples, the first registry device receives a registration message. The second registry device receives a query specifying a type (NFType) of a network function and forwards the query to the first registry device based at least in part on the NFType. The first registry device responds, and the second registry device forwards the response. In some examples, the query specifies a service class and the second registry device forwards the query based at least in part on the service class. In some examples, the first registry device sends an indication of the registration to the second registry device, and the second registry device responds to the query based at least in part on the received indication and on at least one of an NFType or a service class of the query.

Abstract: A core network device of a telecommunications network can receive a first request from a consumer network function (NF) and forward the first request to a first provider NF. The device can subsequently detect a violation by the first provider NF of a response criterion. The device can receive a second request and forward the second request to a second, different provider NF in response to the violation. In some examples, the device can later detect that the first provider NF has satisfied the response criterion with respect to a third request. The device can modify load data to increase the proportion of subsequent requests for which the first provider NF is selected. The device can select provider NFs based on the load data. In some examples, a system can include a network registry device that selects NFs based on violation indications received from the core network device.

Abstract: In some examples, a telecommunications-network packet gateway can receive, from a terminal via a packet tunnel, a lookup request for a network address associated with a server name. The packet gateway can determine a profile identifier associated with the packet tunnel and retrieve, from a policy server, an associated profile type. The packet gateway can then select a nameserver associated with the profile type, and forward the lookup request to the nameserver. The nameserver can store a name list. Upon receiving a request, the nameserver can determine whether the server name is included in the name list and, in response, send a reply. In some examples, the packet gateway receives a request from the terminal for content, determines a profile type, selects a destination server associated with the profile type, and forwards the request to the destination server.

Abstract: A telecommunication system can include routing devices, a bearer-management device, and a policy-management device. The bearer-management device can receive a request from a terminal to create a specialized bearer (SB) for a non-audio, non-video media type. The bearer-management device can determine that the request is associated with an authorized user, and then send a setup message comprising a Quality of Service (QoS) indicator to the policy-management device. The policy-management device can create the SB permitting data exchange between the terminal and a routing device. The SB can have QoS characteristics associated with the QoS indicator. In some examples, the terminal can receive a network address, determine an associated network port, and send a SIP INVITE message indicating the non-audio, non-video media type. The terminal can then exchange data on the network port with a peer network terminal.

Abstract: When using Dual Connectivity in a Non-Standalone Architecture cellular communication system, a data bearer may be steered through a Long-Term Evolution (LTE) base station or a New Radio (NR) base station. Each bearer is assigned a combination of Quality of Service (QoS) values corresponding to the service type that the bearer is supporting. For example, each different service type may be assigned a combination of a QoS Class Identifier and an Allocation and Retention Priority parameter value. Each combination is also associated with a radio access technology such as LTE radio access technology or NR radio access technology. When NR communications are available between a network core and a communication device, and if the bearer's combination of QoS values has been associated with NR, bearer data is routed through an NR base station. Otherwise, the bearer data is routed through the LTE base station.

Abstract: In some examples, a telecommunications-network packet gateway can receive, from a terminal via a packet tunnel, a lookup request for a network address associated with a server name. The packet gateway can determine a profile identifier associated with the packet tunnel and retrieve, from a policy server, an associated profile type. The packet gateway can then select a nameserver associated with the profile type, and forward the lookup request to the nameserver. The nameserver can store a name list. Upon receiving a request, the nameserver can determine whether the server name is included in the name list and, in response, send a reply. In some examples, the packet gateway receives a request from the terminal for content, determines a profile type, selects a destination server associated with the profile type, and forwards the request to the destination server.

Abstract: Systems, devices, and techniques described herein relate to migrating a communication session from a path including a stressed user plane function (UPF) to a path including a replacement UPF. A communication session may traverse a first path including the first UPF. After establishing the communication session, the first UPF may be determined to be stressed. In response, the communication session can be proactively migrated to a second path including a second UPF. According to various implementations, the existing communication session can be maintained during the migration, thereby substantially eliminating interruptions caused by the stressed first UPF.

Abstract: Systems, devices, and techniques described herein relate to user plane system selection based on latency in mobile networks. In particular, the systems, devices, and techniques can be implemented in fifth generation (5G) mobile networks to provide selection of a user plane function (UPF) based on latency. The UPF can measure a latency toward an access network and provide an indication of the latency to a policy control function (PCF). The PCF can select the UPF based on the indication and can request the UPF to provide services to a user equipment (UE) originating a priority request. In response, the UPF can provide services to the UE.

Abstract: Policy based dual connectivity traffic steering is described herein. A master Long-Term Evolution (LTE) base station may operate in conjunction with a secondary New Radio (NR) base station to provide dual connectivity to user equipment (UE) operating in an environment. The LTE base station can steer traffic between the LTE base station and the NR base station based at least in part on policy information received at the LTE base station. The policy information can indicate, for a particular UE and for a particular Quality of Service (QoS) Class Identifier (QCI), whether the LTE base station can transfer a communication to the NR base station. Thus, traffic steering determinations can be based on the policy information, quality identifiers, device capability, signal strength(s), load level(s), and the like, thereby providing a flexible framework for steering wireless traffic in a dual connectivity environment.

Abstract: A first access node of a first wireless access network receives, via a first entry node of the first network, a service-request message from a terminal registered with the first network. The first access node requests first network-capacity information associated with the first wireless access network from the first entry node, and second network-capacity information associated with a second wireless access network from a second access node of the second network. The first access node selects a target access network based on the service-request message and the first and second network-capacity information. The first access node, in response to a selection of the first wireless access network, sends a service-reply message to the first entry node. The first access node, in response to a selection of the second wireless access network, triggers a handover of the terminal to the second wireless access network.

Abstract: A core network element, such as a PCRF and/or an MME, can determine that a Quality of Service (QoS) Class Indicator (QCI) of particular bearer set up between the core network and user equipment (UE) should be changed to a new QCI. When a control node, such as the MME, determines that no teardown delay conditions are met, the control node can send a bearer release message to a base station that instructs the base station to tear down all bearers for the UE, even if they are in use. In a dual connectivity arrangement, such as a E-UTRAN New Radio-Dual Connectivity (EN-DC) configuration, the base station can instruct a secondary base station to also release all bearers for the UE. The control node can instruct the base station to reestablish the particular bearer with the new QCI when the base station reestablishes the bearers for the UE.