T-mobile Usa, Inc.

Raymond Thomas Ball

Nassereddine Sabeur

Joel Arends

Shujaur Rehman Mufti

Saqib Badar

Ravikumar Subramanian

Vineeth Appukkuttan Nair

Allen G Ricciardi

Paria Hakimi

Sushma Shetty

Carmine Shelton

Cesar Mandanas

Mehul Jayant Shah

Suryanarayana Murthy Gorty

Sabuhi Kiran Zaifuddin

Marc A Proctor

Andrew Lee Watts

Paul Farag

Prannoy Kiran Saride

Asma Perveen Ahmad

Kenroy Dwight Shaw

A system ingests multiple roaming network updates for reconfiguring network subsystems of a network, and the network updates are received from multiple mobile network operators (MNOs). The system audits the network subsystems to determine a state of the network. For a particular network subsystem that includes multiple nodes located across different time zones, the system groups a set of updates across the multiple roaming network updates. The set of updates corresponds to the particular network subsystem. The set of updates is grouped for application to the multiple nodes across the different time zones. The system determines a maintenance window to update the state of the network based on the audit and applies, using an interactive shell client for the particular network subsystem, the set of updates to the particular network subsystem during the determined maintenance window. The applied updates permits user devices to roam on the network.

Smart suggestions relating to network configuration updates in response to roaming partner updates

Systems and methods for establishing a communication interface between control functions of a network core and a network data node associated with a user side packet core are discussed herein. The system can enable configuration information to be stored and dynamically updated by the network data node such that control nodes of the user side packet core requesting service from the network core are provided with up to date configuration information associated with active control functions. As control functions are activated and deactivated, the configuration information can be updated to reflect the current state of the network core and ensure that user device connects are routed to active control functions configured to provide user requested services.

P-CSCF registration and discovery mechanism

A first mobile network operator (MNO) periodically retrieves roaming network updates for reconfiguring one or more network subsystems of a network operated by the first MNO. A portion of the roaming network update is retrieved from an operator master database (OMD). The roaming network update includes roam data associated with a second MNO and configuration data for the one or more network subsystems. The roam data is retrieved via IR.21 information from a cloud server associated with the second MNO. The roam data specifies one or more telecommunications carriers associated with the second MNO. The one or more network subsystems for reconfiguration are identified based on the roaming network update. The one or more network subsystems are reconfigured using the roaming network update to enable one or more user devices associated with the second MNO for roaming on the network.

Automated audits relating to network configuration updates in response to roaming partner updates

A system periodically retrieves roaming network updates associated with at least one mobile network operator (MNO) using an application programming interface (API), and periodically ingests IR.21 information from cloud servers associated with the MNOs. The system retrieves configuration data for at least one network subsystem of a network. The system then performs an event-driven audit of the at least one network subsystem based on the ingested IR.21 information and queries the at least one network subsystem to determine discrepancies between a current network state and the IR.21 information. To rectify the discrepancies, the system determines a change to the network and maps the determined change with a network configuration table. According to the network configuration table, commands are automatically executed to apply the change and rectify the discrepancies. The network change enables user devices to roam on the network.

Automated network changes relating to network configuration updates in response to roaming partner updates

Disclosed is a system and method to route a call from a roaming UE on a 5G network. The system receives from a UE belonging to a home network an indication of a call to a dialed number. The call requires information associated with the UE that is not available to the first wireless telecommunication network, because the UE is roaming on a visitor network. The indication of the call includes a unique identifier of the visitor network. The system can determine based on the unique identifier that the UE is roaming and send a request to the visitor network to provide instructions on how to route the received call. Upon obtaining the instructions on how to route the received call, the system routes the received call.

Call routing while roaming on a 5G wireless telecommunication network

System and methods for inter-network user equipment (UE) registration are described herein. A managed access system (MAS) network may receive a request for services from an unauthorized UE and may generate a registration request that it transmits to the UE's home network using a call session control function (CSCF) and the Cx interface. One or more diameter routing agents on the path between the MAS network and the destination network may determine whether the registration request was received on the Cx network and if not, may discard the message. Other criteria may also be used to determine whether to forward such requests.

Inter-network IMS registration

A network may include an International Serials Data System (ISDS) that is configured to register and determine an identity of a receiving or originating user equipment (UE) that has a home network that operates using a different format or standard than the current network. The ISDS may be configured to generate transmissions on behalf of the UE for registration and identification for outgoing and incoming voice or text messages using the format of both networks.

Architecture for providing cellular roaming support

Systems, methods, and devices that relate to enabling roaming users to use various communication services by assigning temporary local numbers are disclosed. In one example aspect, a method for wireless communication includes entering a visited network by a roaming device. The roaming device has a primary number associated with its home network. The method includes requesting a local number associated with the visited network by the roaming device and performing a communication using the local number associated with the visited network.

Temporary local number assignment

Methods, devices, and system related to providing service-based interfaces between network functions and a proxy call session control function for Internet Protocol (IP) Multimedia Subsystem services. In one example aspect, a method for wireless communication includes retrieving, by a proxy call session control function, an address of an access and mobility management function from a unified data management function. The proxy call session control function is configured to communicate with the unified data management function directly via a first service-based interface. The method also includes retrieving, by the proxy call session control function, information from the access and mobility management function. The proxy call session control function is configured to communicate with the access and mobility management function directly via a second service-based interface.

Service-based architecture for internet protocol multimedia subsystem

The present disclosure describes techniques that facilitate the encryption of data communications between a home and VPLMN, along with the verification of a content and origin of encrypted messages at each end of a data communication. In one non-limiting example, the process of verifying the content and origin of an encrypted message is facilitated partly by an exchange of network public keys between the HPLMN and VPLMNs. In another example, a network certificate aggregator (NCA) may act as a certificate authority (CA) by verifying the identities of interacting home and VPLMNs. The NCA may facilitate and exchange public keys between a home and VPLMN, whereby the HPLMN and VPLMNs need only trust and verify an identity of the NCA. Alternatively, the NCA may act as a conduit for data communications between the HPLMN and VPLMN.

End-to-end security for roaming 5G-NR communications

Methods, devices, and system related to consistent and reliable local breakout for roaming devices are disclosed. In one example aspect, a method for wireless communication includes transmitting, by a user equipment that roams into a visited network, a request to a network node in the visited network to establish a connection using a first access technology. The method includes receiving, by the terminal device, a response from the network node. The response comprises an address of a gateway in the visited network. The gateway is configured to provide a secured tunnel to the terminal device for data transmissions using a second access technology. The method also includes initiating, by the terminal device, a connection with the gateway using the second access technology based on the address of the gateway, and performing, by the terminal device, data transmissions using the second access technology via the gateway in the visited network.

Reliable local breakout for roaming devices

As described herein, one of a third generation (3G) radio access network (RAN) or a fifth generation (5G) RAN may be selected to receive a handover of a communication session from a fourth generation (4G) RAN. The 3G RAN or 5G RAN may be selected based on at least one of performance measurements for the 3G RAN and the 5G RAN, a preference for the 3G RAN or the 5G RAN, or a performance threshold for the 3G RAN or for the 5G RAN. The handover to the selected one of the 3G RAN or 5G RAN may then be initiated.

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Seattle, WA, United States of America

Raymond Thomas Ball