Abstract: SMS services are provided to roaming mobile devices at visiting networks. This invention implements interworking between VoLTE and circuit-switched (CS) SMS and handles roaming towards both the VPLMN (visited public land mobile network) and HPLMN (home public land mobile network). The interworking function translates CS signals from the VPLMN into IMS signals for the IMS core at the HPLMN and performs location-update registration at the HSS at the HPLMN to exchange SMS communications.

Abstract: This invention is a system and method for implementing a VoLTE and circuit switched voice and SMS interworking function to provide voice and SMS service to roaming mobile devices at visiting network based on Circuit-switched (CS) roaming towards VPLMN, and VoLTE voice and SMS roaming towards HPLMN. The interworking function translates CS signaling with VPLMN into IMS signaling towards IMS core at HPLMN. The interworking function also performs location-update registration at HSS at HPLMN for receiving mobile-terminated voice calls and SMS.

Abstract: This invention is a system and method for implementing a VoLTE and circuit switched voice and SMS interworking function to provide voice and SMS service to roaming mobile devices at visiting network based on VoLTE roaming and ‘SMS over SGs’ towards VPLMN, and circuit-switched voice and SMS towards HPLMN. The interworking function enables and redirects IMS traffic at VPLMN towards a hosted IMS core with voice connectivity to PSTN via MGCF and MGW. The interworking function also performs circuit-switched location-update registration at HLR at HPLMN for receiving mobile-terminated voice calls and SMS.

Abstract: An enforcer application is configured to intercept signaling messages in a telecommunications network and select an optimal SGW, PGW, SMF/UPF and application servers in real time. More specifically, the enforcer intercepts and generates GSM MAP, Diameter, GTP-C and HTTP2/JSON signaling messages. The enforcer executes a policy to force the user devices to re-establish the data connection, thus anchoring at different SGW, PGW, SMF/UPF and application server to keep end-to-end routing path optimal, when the impacting factor changes. The enforcer can further feed its performance data and decision matrix into the analyzer and database to further optimize the decision process. Analyzer and KPI metrics databases are installed at central data centers to collect the KPI data from different probes and enforcer, calculate in real-time the optimal routing path with different decision factors considered, and interact with enforcer to update the latest optimal path status based on the data collected.

Abstract: A system and method for routing of 5G mobile data traffic along a routing path in an Internetwork Packet Exchange (IPX) network having requisite Quality of Service (QoS). A proxy is deployed in the IPX network to intercept Session Create request and response messages exchanges between the home network and the visited network. The routing platform extracts Single-Network Slice Selection Assistance Information (S-NSSAI) attribute and uses this attribute and the geographic locations of the visited network and the home network to select a routing path in the IPX network having requisite QoS for the network slice use case. The routing platform uses layer-3 routing technique to anchor User Plane Function (UPF) Proxies deployed at different routing paths in the IPX network. Alternately, the routing platform uses layer-2 routing technique, with Software-Defined Networking (SDN) controller and SDN-switches to route traffic via the selected routing path in the IPX network.

Abstract: This invention is a system and method for implementing Network Function (NF) Proxy in an IPX network for 5G core roaming. NF Discover queries from Visited Public Land Mobile Network (VPLMN) are manipulated such that the IPX NF Proxy's fully qualified domain name (FQDN) is returned as the FQDN of the Home Public Land Mobile Network (HPLMN) NF. NF Proxy queries the FQDN of a true HPLMN NF through a HPLMN Network Repository Function (NRF) Proxy. Application messages are routed to NF Proxy hosted in the IPX network. NF Proxy performs its proxy function and routes egress messages to the target NF in HPLMN or another location.

Abstract: This invention is a system and method for implementing a VoLTE and circuit switched voice and SMS interworking function to provide voice and SMS service to roaming mobile devices at visiting network based on VoLTE roaming and ‘SMS over SGs’ towards VPLMN, and circuit-switched voice and SMS towards HPLMN. The interworking function enables and redirects IMS traffic at VPLMN towards a hosted IMS core with voice connectivity to PSTN via MGCF and MGW. The interworking function also performs circuit-switched location-update registration at HLR at HPLMN for receiving mobile-terminated voice calls and SMS.

Abstract: This invention is a system and method for implementing a VoLTE and circuit switched voice and SMS interworking function to provide voice and SMS service to roaming mobile devices at visiting network based on VoLTE roaming and ‘SMS over SGs’ towards VPLMN, and circuit-switched voice and SMS towards HPLMN. The interworking function enables and redirects IMS traffic at VPLMN towards a hosted IMS core with voice connectivity to PSTN via MGCF and MGW. The interworking function also performs circuit-switched location-update registration at HLR at HPLMN for receiving mobile-terminated voice calls and SMS.

Abstract: This invention is a system and method for implementing a VoLTE and circuit switched voice and SMS interworking function to provide voice and SMS service to roaming mobile devices at visiting network based on VoLTE roaming and ‘SMS over SGs’ towards VPLMN, and circuit-switched voice and SMS towards HPLMN. The interworking function enables and redirects IMS traffic at VPLMN towards a hosted IMS core with voice connectivity to PSTN via MGCF and MGW. The interworking function also performs circuit-switched location-update registration at HLR at HPLMN for receiving mobile-terminated voice calls and SMS.

Abstract: A method of providing voice call, data, and SMS services to a user equipment roaming in a 2G/3G visited network and subscribed to an LTE home network. An Interworking Function communicates with both the visited network and the home network. The Interworking Function translates between Mobile Application Part (MAP) protocol used by the 2G/3G visited network and Session Initiation Protocol (SIP) used by the LTE home network. The Interworking Function establishes both a MAP Registration with the 2G/3G visited network and also a SIP Registration with the LTE home network, thereby enabling provision of voice call, data, and SMS services to the roaming UE.

Abstract: A system and method for routing of 5G mobile data traffic along a routing path in an Internetwork Packet Exchange (IPX) network having requisite Quality of Service (QoS). A proxy is deployed in the IPX network to intercept Session Create request and response messages exchanges between the home network and the visited network. The routing platform extracts Single-Network Slice Selection Assistance Information (S-NSSAI) attribute and uses this attribute and the geographic locations of the visited network and the home network to select a routing path in the IPX network having requisite QoS for the network slice use case. The routing platform uses layer-3 routing technique to anchor User Plane Function (UPF) Proxies deployed at different routing paths in the IPX network. Alternately, the routing platform uses layer-2 routing technique, with Software-Defined Networking (SDN) controller and SDN-switches to route traffic via the selected routing path in the IPX network.

Abstract: A roaming method that enables the home network (HPMN) to use S8 Home Routed (S8HR) model for out-bound roaming while the visited network (VPMN) uses Local Breakout (LBO) model for in-bound roaming. An IMS Roaming Gateway (IR-GW) establishes an IMS bearer between the IR-GW and the home network's Packet Data Network Gateway (P-GW). The IR-GW replaces the source IP address on the SIP-Register message with the client IP address assigned to the UE by the HPMN P-GW. Upon receiving a SIP-Response message responsive to successful authentication of the UE with the HPMN, the IR-GW inserts its own IP address into the SIP-Response message and forwards it to the UE. IR-GW performs network address translation (NAT) between the source IP assigned to the UE by the VPMN and the client IP assigned to the UE by the HPMN.

Abstract: A system and method for routing of 5G mobile data traffic along a routing path in an Internetwork Packet Exchange (IPX) network having requisite Quality of Service (QoS). A proxy is deployed in the IPX network to intercept Session Create request and response messages exchanges between the home network and the visited network. The routing platform extracts Single-Network Slice Selection Assistance Information (S-NSSAI) attribute and uses this attribute and the geographic locations of the visited network and the home network to select a routing path in the IPX network having requisite QoS for the network slice use case. The routing platform uses layer-3 routing technique to anchor User Plane Function (UPF) Proxies deployed at different routing paths in the IPX network. Alternately, the routing platform uses layer-2 routing technique, with Software-Defined Networking (SDN) controller and SDN-switches to route traffic via the selected routing path in the IPX network.

Abstract: A system and method for routing of 5G mobile data traffic along a routing path in an Internetwork Packet Exchange (IPX) network having requisite Quality of Service (QoS). A proxy is deployed in the IPX network to intercept Session Create request and response messages exchanges between the home network and the visited network. The routing platform extracts Single-Network Slice Selection Assistance Information (S-NSSAI) attribute and uses this attribute and the geographic locations of the visited network and the home network to select a routing path in the IPX network having requisite QoS for the network slice use case. The routing platform uses layer-3 routing technique to anchor User Plane Function (UPF) Proxies deployed at different routing paths in the IPX network. Alternately, the routing platform uses layer-2 routing technique, with Software-Defined Networking (SDN) controller and SDN-switches to route traffic via the selected routing path in the IPX network.

Abstract: A routing platform for routing 4G and 5G mobile data traffic in a mobile core networks implementing Option-3 of 5G Non-Standalone deployment. The routing platform captures S6a Diameter messages sent between a Mobility Management Entity (MME) and a Home Subscriber Server (HSS) and examines the captured messages to determine whether a user equipment (UE) is configured for a 5G data connection. The routing platform intercepts a GTP Create-Session-Request message sent from a Serving Gateway (SGW) and determines whether the GTP message is associated with the UE previously determined to be configured for a 5G data connection. If the GTP message is associated with the UE configured for a 5G data connection, the GTP message is either sent to a dedicated 5G Packet Network Data Gateway (PGW) or the GTP message is modified so that a single PGW handling both 4G and 5G traffic can establish a 5G session for the UE.

Abstract: A routing platform for routing 4G and 5G mobile data traffic in a mobile core networks implementing Option-3 of 5G Non-Standalone deployment. The routing platform captures S6a Diameter messages sent between a Mobility Management Entity (MME) and a Home Subscriber Server (HSS) and examines the captured messages to determine whether a user equipment (UE) is configured for a 5G data connection. The routing platform intercepts a GTP Create-Session-Request message sent from a Serving Gateway (SGW) and determines whether the GTP message is associated with the UE previously determined to be configured for a 5G data connection. If the GTP message is associated with the UE configured for a 5G data connection, the GTP message is either sent to a dedicated 5G Packet Network Data Gateway (PGW) or the GTP message is modified so that a single PGW handling both 4G and 5G traffic can establish a 5G session for the UE.

Abstract: The specialized networking and application system includes an enforcer configured to intercept the signaling messages and select an optimal SGW, PGW, SMF/UPF and application servers in real time. More specifically, the enforcer intercepts and generates GSM MAP, Diameter, GTP-C and HTTP2/JSON signaling messages. The enforcer executes a policy to force the user devices to re-establish the data connection, thus anchoring at different SGW, PGW, SMF/UPF and application server to keep end-to-end routing path optimal, when the impacting factor changes. The enforcer can further feed its performance data and decision matrix into the analyzer and database to further optimize the decision process. Analyzer and KPI metrics databases are installed at central data centers to collect the KPI data from different probes and enforcer, calculate in real-time the optimal routing path with different decision factors considered, and interact with enforcer to update the latest optimal path status based on the data collected.

Abstract: This invention is a system and method for an interworking function that handles communications between Rich Communication Services (RCS) Pre-Universal Profile (Pre-UP) and Universal Profile (UP) clients, and their Controlling Function and Participating Function service points. The interworking function supports the interworking for Pre-UP and UP clients in the following scenarios: 1) CPM Standalone Messaging and CPM 1-to-1 Chat, 2) CPM Chat and IM/SIMPLE Chat, 3) File Transfer by MSRP and File Transfer by HTTP, and 4) Open Group Chat and Closed Group Chat. The interworking function performs the necessary SIP message conversation and/or headers and message bodies manipulation, acts as MSRP client and server, acts as a HTTP server to store file for file transfer interworking, and acts as message proxy for Controlling Function and Participating Function.

Abstract: This invention is a system and method for an interworking function that handles communications between Rich Communication Services (RCS) Pre-Universal Profile (Pre-UP) and Universal Profile (UP) clients, and their Controlling Function and Participating Function service points. The interworking function supports the interworking for Pre-UP and UP clients in the following scenarios: 1) CPM Standalone Messaging and CPM 1-to-1 Chat, 2) CPM Chat and IM/SIMPLE Chat, 3) File Transfer by MSRP and File Transfer by HTTP, and 4) Open Group Chat and Closed Group Chat. The interworking function performs the necessary SIP message conversation and/or headers and message bodies manipulation, acts as MSRP client and server, acts as a HTTP server to store file for file transfer interworking, and acts as message proxy for Controlling Function and Participating Function.

Abstract: A system for supporting the deployment of an embedded subscriber identification module (eSIM) provisioning management system on the ES3 interface between Subscription Manager Data Preparation (SM-DP) of a target mobile network operator (MNO) and Subscription Manager Secure Routing (SM-SR) of a current MNO. A SM-Proxy implements a SM-SR functionality on a first interface towards the SM-DP, and implements a SM-DP functionality on a second interface towards the SM-SR. A hosted SM-DP implements a RESTful API to receive SIM profile information from a provisioning server in the target MNO's network. An Agreement Management system controls a set of eSIM provisioning rules. A Service Portal enables the MNOs to manage their eSIM provisioning rules across their MNO partners.