# US 12,182,637 B2 · Method, apparatuses and computer-readable media relating to event subscription in a communication network

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- Number: US 12,182,637 B2
- Document ID: US12182637B2
- Status: Granted
- Kind: B2
- Application number: 17/762,989
- Filed: 2020-09-22
- Published: 2023-01-26
- Granted: 2024-12-31
- Earliest claimed: 2019-09-26
- Assignees: Telefonaktiebolaget L M Ericsson (publ)
- Applicants: Telefonaktiebolaget LM Ericsson (publ)
- Inventors: Wenliang Xu
- Web page: https://patentgrep.com/patent/US12182637B2

## CPC

- G06F 9/542: {Event management; Broadcasting; Multicasting; Notifications}
- G06F 9/546: {Message passing systems or structures, e.g. queues}
- H04L 41/0604: using filtering, e.g. reduction of information by using priority, element types, position or time
- H04L 41/0686: Additional information in the notification, e.g. enhancement of specific meta-data
- H04L 67/55: Push-based network services
- H04W 8/18: Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

The disclosure provides methods, apparatus and computer-readable media for subscribing to, and receiving event notification messages from a CAPIF core function. In one method performed by a subscribing network entity, the subscribing network entity sends an event subscription request message to the CAPIF core function. The event subscription request message comprises an indication of an event filter to be utilized by the CAPIF core function for filtering event notifications to be sent to the subscribing network entity. The event filter comprises an identity of one or more network entities associated with events to be notified to the subscribing network entity.

## Claims

### Claim 1

A method performed by a subscribing network entity for subscribing to event notifications from a common application programming interface framework, CAPIF, core function in a telecommunications network, the method comprising:
sending an event subscription request message to the CAPIF core function, the event subscription request message comprising an indication of an event filter, the event filter to be utilized by the CAPIF core function for filtering event notifications to be sent to the subscribing network entity, the event filter comprising: an identity of one or more network entities associated with events to be notified to the subscribing network entity; and an indication of a type of event to be notified to the subscribing network entity.

### Claim 2 (depends on 1)

The method according to claim 1, wherein the event filter further comprises an identity of one or more API.

### Claim 3 (depends on 1)

The method according to claim 1, wherein the one or more network entities associated with events to be notified to the subscribing network entity comprise one or more of: one or more API invokers; and one or more API exposure functions.

### Claim 4 (depends on 1)

The method according to claim 1, wherein the type of event comprises an API Invoker Onboarded event or an API Invoker Offboarded event; or
wherein the type of event comprises an Access Control Policy Update event; or
wherein the type of event comprises a Service API Invocation Success event or a Service API Invocation Failure event.

### Claim 5 (depends on 4)

The method according to claim 4, wherein the one or more network entities associated with events to be notified to the subscribing network entity comprise one or more API invokers.

### Claim 6 (depends on 5)

The method according to claim 5, wherein the one or more network entities associated with events to be notified to the subscribing network entity comprise one or more API exposure functions.

### Claim 7

A subscribing network entity, comprising:
at least one processor; and
at least one memory, the at least one memory containing instructions executable by the at least one processor, whereby the NEF entity is operative to:
send an event subscription request message to a CAPIF core function, the event subscription request message comprising an indication of an event filter, the event filter to be utilized by the CAPIF core function for filtering event notifications to be sent to the subscribing network entity, the event filter comprising: an identity of one or more network entities associated with events to be notified to the subscribing network entity; and an indication of a type of event to be notified to the subscribing network entity.