Syniverse Technologies, LLC

Jerry Handra

Edward Yau

Kin Cheung

Jacky Luk

Kenneth Mak

Paul Sun

Chi Lap Seto

A system and method for implementing Steering of Roaming for 5G core roaming in an Internet Packet Exchange (IPX) network. A Hypertext Transfer Protocol (HTTP)/2 Proxy is deployed in an IPX network. The HTTP/2 Proxy receives N32-f request message from a Visited Public Land Mobile Network (VPLMN). The N32-f request has an embedded N12 authorization request message or an embedded N8 registration request message. If VPLMN is a non-preferred roaming partner, the HTTP/2 Proxy appends a patch-request to N32-f request message and routes it to the Home Public Land Mobile Network (HPLMN). The patch-request causes the home Security Edge Protection Proxy (hSEPP) to replace Mobile Country Code (MCC) or Mobile Network Code (MNC) value with a predefined value that will trigger a rejection from HPLMN. The mobile device will select another VPLMN. If the VPLMN is a preferred roaming partner, the HTTP/2 Proxy routes the request without appending a patch-request.

Steering of roaming for 5G core roaming in an internet packet exchange network

This invention is a system and method for a high-performance Diameter Routing Agent (DRA) platform with a three-tier architecture. The DRA platform consists of a Diameter Connection Router (DCR), a Diameter Load Balancer (DLB), and multiple DRA Instances. DCR is a front-end to all external Peers and distributes Diameter connections to a DLB. DLB is a Diameter transaction load balancer and distributes individual Diameter transaction to a DRA. DRA is a Diameter Routing Agent to implement business logic to determine routing of an incoming request to a destination peer as well as message mediation. A public Internet Protocol (IP) address of the DCR is exposed to the external peers as a single point of contact between the peers and the computer network, wherein an internal topology of the computer network remains hidden from the peers.

Routing agent platform with a 3-tier architecture for diameter communication protocol in IP networks

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Singapore, Singapore

Jerry Handra