Oracle International Corporation

Tekelec

Sridhar Karuturi

Yesh Goel

Amarnath Jayaramachar

Doki Satish Kumar Patro

Peter Joseph Marsico

Virendra Singh

Thomas Matthew McCann

David Michael Sprague

Shashikiran Bhalachandra Mahalank

Rajiv Krishan

Mark Edward Kanode

Jeffrey Alan Craig

Ankit Srivastava

Donald E Wallace

Tarek Assali

Kedar Kashinath Karmarkar

Manish Kumar Gupta

Abhishek Mukherjee

John Scott Gilmore

Carlos Alberto Schifferli Lopes

Ahmed M Akl

Sameh Naguib

Stephen Edward Dreyer

Methods, systems, and computer readable media for discovering network function (NF) service producers in a hierarchical network are disclosed. One method includes receiving, by a regional NF repository function (NRF) operating in a first region of a hierarchical network, a NF registration request message from a NF service producer operating in the first region and detecting, by the regional NRF, an absence of <NF-Type>Info and/or <NF-Type>InfoList attribute data in the received NF registration request message. The method further includes creating, by the regional NRF, an entry in NrfInfo structure information directed toward a root NRF operating in the hierarchical network, wherein the entry includes an nfinstance identifier that identifies the NF service producer and is mapped to an empty structure field indicative of absent <NF-Type>Info and/or <NF-Type>InfoList attribute data and sending, by the regional NRF to the root NRF, the NrfInfo structure information via a registration message or update registration message.

Methods, systems, and computer readable media for discovering network function service producers in a hierarchical network

A method for processing NF discovery requests using prioritized lists of preferred locations includes maintaining an NF profiles database including NF profiles of producer NFs registered to provide service to other NFs and a preferred locality attribute mappings database including mappings between preferred locality attributes and prioritized lists of preferred locations. The method includes receiving, from an NF, an NF discovery request including query parameters and a preferred locality attribute. The method further includes accessing the preferred locality attribute mappings database using the preferred locality attribute and obtaining a prioritized list of preferred locations corresponding to the preferred locality attribute, accessing the NF profiles database using the query parameters and identifying NF profiles of producer NFs capable of providing a service indicated by the query parameters, and prioritizing the NF profiles according to the prioritized list of preferred locations. An NF discovery response is generated and transmitted to the NF.

Methods, systems, and computer readable media for processing network function (NF) discovery requests at NF repository function (NRF) using prioritized lists of preferred locations

Methods, systems, and computer readable media for enabling forwarding of subsequent network function subscription updates. A method includes forwarding, from a bootstrapped network function repository function (NRF) in a first region, a subscription creation request from a consumer network function to a target NRF in a second region. The method includes creating, at the target NRF, a subscription for the consumer network function. The method includes generating, at the target NRF, a hint comprising data indicating one or more alternate NRFs each sharing subscription state data with the target NRF. The method includes sending, from the target NRF to the consumer network function, a subscription response message including the hint.

Methods, systems, and computer readable media for enabling forwarding of subsequent network function subscription updates

A method for communicating delegated NF discovery results between SCPs and using the delegated NF discovery results for alternate SBI service request routing includes receiving, at a first SCP and from a consumer NF instance, an SBI service request. The method further includes determining that delegated NF discovery is required, and, in response, performing delegated NF discovery on behalf of the consumer NF instance. The method further includes receiving an NF discovery response including delegated NF discovery results. The method further includes sending the SBI service request including the delegated NF discovery results to a second SCP. The method further includes receiving, at a second SCP, the SBI service request including the delegated NF discovery results, forwarding the SBI service request towards a first producer NF instance selected by the first SCP, detecting failure of routing or processing of the SBI service request, and using the delegated NF discovery results for alternate routing of the SBI service request.

Methods, systems, and computer readable media for communicating delegated network function (NF) discovery results between service communication proxies (SCPs) and using the delegated NF discovery results for alternate routing

Methods, systems, and computer readable media for limiting network function (NF) repository function (NRF) forwarding are disclosed. One example method for limiting NRF forwarding comprises: at a first NF comprising at least one processor: receiving a request message associated with a consumer NF; determining that the request message cannot be serviced by the first NF; inserting or modifying a forwarding limit value in the request message, wherein the forwarding limit value indicates a number of times that the request message can be forwarded; and forwarding the request message including the forwarding limit value toward a second NF.

Methods, systems, and computer readable media for limiting network function (NF) repository function (NRF) forwarding

A method for enabling 5G transport quality of service (QoS) includes receiving a service discovery request from a consumer network function (NF) or service communications proxy (SCP). The method further includes accessing a 5G transport QoS policy database and determining that a 5G transport QoS policy applies to the service discovery request. The method further includes, in response to determining that a 5G transport QoS policy applies to the discovery request, generating a service discovery response message and inserting a network layer QoS value for implementing the policy in the service discovery response message. The method further includes transmitting the service discovery response message to the consumer NF or SCP.

Methods, systems, and computer readable media for enabling transport quality of service (QoS) in 5G networks

A method includes receiving an ingress Diameter message related to a mobile subscriber from a MME located in a non-home network, sending a RIR message containing a mobile subscriber identifier to a HSS in a home network of the mobile subscriber, receiving identification information identifying a MME in the home network that conducted a most recent attachment of the mobile subscriber, utilizing the identification information to send an IDR message containing the mobile subscriber identifier to the identified MME, receiving an IDA message containing attachment timestamp data corresponding to the most recent attachment of the mobile subscriber in the home network, determining a transit time using the UE attachment timestamp data and timestamp information corresponding to the ingress Diameter message, and analyzing the transit time to determine if the ingress Diameter message is to be designated as a suspicious ingress message.

Methods, systems, and computer readable media for conducting a time distance security countermeasure for outbound roaming subscribers using diameter edge agent

An example system includes a service proxy controller and a number of service proxy workers. The service proxy controller is configured for providing routing policies for a telecommunications network core. The telecommunications network core includes network functions communicating using a service-based architecture. Each service proxy worker is configured for routing telecommunications network core messages between a respective subset of the network functions by consuming the routing policies from the service proxy controller and enforcing the routing policies from the service proxy controller. Each service proxy worker is configured for providing network status reports to the service proxy controller based on the telecommunications network core messages.

Methods, systems, and computer readable media for providing a service proxy function in a telecommunications network core using a service-based architecture

A method for Diameter signaling message external identifier address resolution and routing includes receiving a Diameter signaling message, decoding the Diameter signaling message and determining that an external identifier attribute value pair (AVP) is present in the Diameter signaling message. The method further includes decoding contents of the external identifier AVP, performing a lookup in a domain table using a domain identifier component of the external identifier AVP and locating an entry corresponding to the domain identifier component, determining whether a local identifier table is configured for the domain identifier component, performing a lookup in a local identifier table using a local identifier component of the external identifier AVP, populating at least one Diameter routing AVP of the Diameter signaling message with Diameter routing information obtained from the lookup in the domain table or the lookup in the local identifier table, and routing the Diameter signaling message using the Diameter routing information.

Methods, systems, and computer readable media for diameter signaling message external identifier address resolution and routing

Methods, systems, and computer readable media for managing suspect subscriber bindings. In some examples, a method is performed by a Diameter signaling router (DSR) for a telecommunications network. The method includes binding a subscriber to a first policy and charging rules function (PCRF) server selected from a plurality of PCRF servers for the telecommunications network. The method includes determining that one or more messages destined to the first PCRF server have failed according to one or more user-configurable rules defining failure. The method includes tearing down the binding between the subscriber and the first PCRF server.

Methods, systems, and computer readable media for detecting and managing suspect subscriber bindings

Methods, systems, and computer readable media for dynamically and conditionally setting service triggers in a communications network are disclosed. According to one aspect, a system for dynamic and conditional trigger insertion includes a dynamic trigger insertion (DTI) rules database for maintaining conditions or rules for dynamic trigger insertion and a DTI screening module for receiving a first mobility management message that is associated with a mobile subscriber, using the DTI rules database to determine whether a condition or rule for dynamic trigger insertion is satisfied, and, in response to determining that a condition or rule for dynamic trigger insertion is satisfied, generating a second mobility management message that includes a dynamically inserted trigger condition.

Methods, systems, and computer readable media for dynamically and conditionally setting service triggers in a communications network

Methods, systems, and computer readable media for configurable Diameter address resolution are disclosed. One method includes, at a Diameter signaling router (DSR), sending Diameter signaling messages to and receiving Diameter signaling messages from Diameter signaling entities in a network. The method further includes providing for configuration of a plurality of routing entity identities and an order for preferentially using the routing entity identities in performing Diameter address resolution. The method further includes routing Diameter signaling messages using Diameter address information determined in the Diameter routing address resolution.

Methods, systems, and computer readable media for configurable diameter address resolution

Methods, systems, and computer readable media for hybrid session based Diameter routing are disclosed. According to one method, the method comprises receiving, at a first Diameter signaling router (DSR), a first Diameter message for processing by a Diameter server. The method also includes selecting, using a Diameter node selection algorithm that operates on at least one parameter in the first Diameter message without requiring use of stored Diameter binding information, a first Diameter server to which the first Diameter message is to be routed. The method further includes determining whether the first Diameter server is available. The method also includes, in response to determining that the first Diameter server is not available, selecting a second Diameter server to which the first Diameter message is to be routed and creating an exception binding record that associates the second Diameter server and information in the first Diameter message.

Growing community of inventors

Raleigh, NC, United States of America

Sridhar Karuturi