NEF QoS Caching With Dynamic Updates for Faster Service Authorization

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Solution Overview

Problem

Existing wireless networks face inefficiencies in providing Quality of Service (QoS) parameter information to service providers due to the need for reactive querying of network elements, which consumes resources and delays responses.

Innovation Solution

Implementing a Network Exposure Function (NEF) that caches QoS parameter information for a subset of UEs, allowing it to respond quickly to service provider queries without needing to reactively query other network elements, and dynamically updates this information through subscriptions to UE authorization changes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of time

If the network reactsively queries network elements for QoS parameter information, then the information can be obtained, but network resource consumption increases and response time is delayed

Engineering Contradiction:

Improveresponse timeVSAvoidnetwork resource consumption

Core Design Contradiction:

Loss of timeVSUse of energy by moving object

Solution Approach 1:

The patent implements a caching mechanism that proactively stores QoS parameter information for UEs before it is requested. When a UE's QoS information is obtained from network elements, it is cached locally in the network device. Subsequent requests for the same UE's QoS parameters are served from the cache, eliminating the need for reactive queries to network elements and thus reducing both response time and network resource consumption.

Inventive Principle:

Principle #10Preliminary action

2Speed

If QoS parameter information is cached locally, then response speed increases, but the cached information may become outdated

Engineering Contradiction:

Improveresponse speedVSAvoidinformation accuracy

Core Design Contradiction:

SpeedVSReliability

Solution Approach 1:

The patent implements a subscription-based feedback mechanism where the network device subscribes to authorization change notifications from network elements for cached UEs. When a UE's authorization information changes, the network element sends a notification to the network device, which then updates the cached QoS parameter information accordingly. This feedback loop ensures that cached information remains accurate and up-to-date while maintaining fast response speeds.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS12538183B2Systems and methods for dynamic cached service authorization information in a wireless network

Publication Date: 2026.01.27 VERIZON PATENT & LICENSING INC

AI summary

A system described herein may receive a request for Quality of Service (“QoS”) parameter information associated with a particular User Equipment (“UE”). The system may include an exposure element of a core of a wireless network, such as a Network Exposure Function (“NEF”) or a Service Capability Exposure Function (“SCEF”). The system may indicate, to a user information repository of the wireless network, such as a Unified Data Management function (“UDM”) or a Unified Data Repository (“UDR”), that QoS parameter information associated with the particular UE should be provided. The system may receive, based on the indicating, particular QoS parameter information associated with the particular UE, and may output the received particular QoS parameter information associated with the particular UE in response to the request or may push such information as the QoS parameter information is updated.