Network Device Discovery via Event Subscription for UDM Lookup
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Solution Overview
Problem
Network devices face inefficiencies in discovery processes, leading to increased resource consumption and latency due to multiple lookup operations for UDM and UDR devices, which can result in session setup and registration timeouts, impacting network performance and QoS.
Innovation Solution
Implementing a subscription-based notification system for network device discovery, where network functions can subscribe to event notifications for UDM and UDR group identifiers, reducing the need for per-request lookups and optimizing resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple individual lookup operations are performed for discovery requests, then discovery accuracy is maintained, but resource consumption increases and latency increases
Solution Approach 1:
The patent implements event subscription mechanisms where network devices pre-subscribe to discovery response events before actual discovery requests are made. This preliminary action allows the NRF to push discovery results directly to subscribed devices, eliminating the need for multiple individual lookup operations and reducing resource consumption while maintaining discovery accuracy.
Solution Approach 2:
The patent consolidates multiple discovery requests into a single event notification mechanism. Instead of processing each discovery request individually through separate lookup operations, the system merges multiple requests into one bulk operation where the NRF retrieves group identifiers once and notifies all subscribed devices simultaneously, significantly reducing resource consumption.
2Loss of information
If multiple individual lookup operations are performed for discovery requests, then complete information is obtained, but session setup time increases
Solution Approach 1:
Network devices perform event subscriptions in advance before session setup begins. When discovery requests are made, the NRF has already identified all devices that need the information and can push results immediately, eliminating sequential lookup delays and reducing session setup time while ensuring all necessary information is delivered.
Solution Approach 2:
The event subscription mechanism establishes a continuous information delivery channel between the NRF and network devices. Instead of interrupting session setup for multiple discrete lookups, the system maintains continuous operation where discovery information is pushed automatically as soon as it becomes available, ensuring information completeness without time loss.
3Measurement precision
If individual lookup operations are performed for each discovery request, then request-specific accuracy is maintained, but network performance decreases
Solution Approach 1:
The patent merges multiple individual lookup operations into a single consolidated event notification process. The NRF retrieves group identifiers once for multiple subscribed devices and pushes results to all of them simultaneously, maintaining the accuracy needed for each specific request while dramatically improving overall network performance by eliminating redundant operations.
Solution Approach 2:
The event subscription mechanism provides a universal solution that serves multiple discovery requests through a single information retrieval operation. Instead of optimizing for individual request accuracy through separate lookups, the system uses a multi-functional notification mechanism that delivers accurate information to all subscribed devices simultaneously, enhancing overall network productivity.
4Reliability
If lookup operations are performed frequently, then up-to-date information is obtained, but timeout likelihood increases
Solution Approach 1:
The patent implements an event-driven feedback mechanism where the NRF automatically notifies subscribed devices when discovery information becomes available or changes. This feedback system ensures devices receive up-to-date information without needing to perform frequent polling lookups, reducing the time required and minimizing timeout likelihood while maintaining information freshness.
Data Source
AI summary
In some implementations, a network device may receive a subscription request to subscribe to receive an event notification based on an event. The event may be associated with the network device receiving a request for discovery of a unified data management (UDM) device. The request for discovery of the UDM device may be based on an identifier of a user equipment (UE). The network device may transmit, based on the subscription request, an indication of a subscription to receive the event notification based on the event.