CAPIF Event Subscription Filtering for Network Resource Optimization
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Solution Overview
Problem
The existing Common Application Programming Interface Framework (CAPIF) for event subscription in communication networks lacks efficient filtering capabilities, leading to unnecessary transmission of irrelevant event notifications and inefficient use of network resources.
Innovation Solution
Implementing an improved CAPIF event subscription and notification system that allows for event filtering based on specific criteria, such as network entity identities and event types, ensuring that only relevant notifications are sent to subscribing entities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If event subscription is implemented without filtering capabilities, then all event notifications are transmitted to subscribing entities, but network resources are wasted due to transmission of irrelevant notifications
Solution Approach 1:
The patent applies preliminary action by establishing event filters during the subscription phase before actual event notifications are generated. Subscribing entities configure filter criteria (such as event type, source entity, or target entity) in advance, allowing the system to pre-determine which notifications should be delivered. This prevents unnecessary notification generation and transmission, thereby conserving network resources while maintaining operational simplicity.
Solution Approach 2:
The patent implements local quality by allowing different filtering criteria to be applied to different event subscription contexts. Each subscribing entity can define specific filter parameters tailored to its needs (e.g., filtering by event type for some subscriptions while filtering by entity identity for others). This selective filtering approach ensures that only relevant notifications are transmitted to each subscriber, optimizing network resource usage without imposing uniform complexity across all subscriptions.
2Productivity
If filtering capabilities are added to CAPIF event subscription, then only relevant event notifications are transmitted, but the system complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the filtering function into separate, modular components within the CAPIF system. The filter configuration, evaluation logic, and notification routing are implemented as distinct functional elements. This modular architecture allows the filtering capability to be added incrementally and independently, improving network efficiency through selective notification transmission while managing system complexity through clear functional separation.
Solution Approach 2:
The patent introduces an intermediary filtering mechanism between the event generation sources and the subscribing entities. This intermediary component evaluates event notifications against configured filter criteria before forwarding them to subscribers. By placing the filtering logic as a mediator layer, the system achieves improved network efficiency through reduced notification transmission while containing complexity within a dedicated intermediary module rather than distributing it throughout the entire CAPIF system.
3Loss of information
If all event notifications are transmitted to all subscribing entities, then complete information is provided to all subscribers, but unnecessary notifications consume network bandwidth and processing resources
Solution Approach 1:
The patent applies preliminary action by configuring event filters during the subscription establishment phase, before any event notifications are transmitted. Subscribing entities define their information needs in advance through filter criteria specification. This allows the system to pre-determine which notifications are relevant to each subscriber, ensuring that complete and accurate information is delivered to those who need it while preventing unnecessary notifications from consuming network bandwidth and processing resources.
Solution Approach 2:
The patent implements parameter changes by introducing filter criteria parameters (such as event type, source entity identity, target entity identity) that modify the notification transmission behavior. By changing these parameters during subscription configuration, the system dynamically adjusts which notifications are transmitted to each subscriber. This ensures information completeness for relevant subscribers while reducing overall network traffic volume by excluding irrelevant notifications from the transmission stream.
Data Source
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AI summary
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.