Network Selection with Temporary IDs for Stateless UE Context Lookup

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Solution Overview

Problem

In 5G networks, stateless network functions do not manage their own data, requiring efficient methods to determine where user equipment (UE) context information is stored and how to retrieve it from a shared data layer.

Innovation Solution

A method and apparatus for generating and using a temporary identification to locate a shared data layer function that stores UE context information, allowing network functions to efficiently retrieve this information.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If stateless network functions are used in 5G networks, then network flexibility and resource utilization are improved, but the complexity of locating and retrieving UE context information from shared data layer increases

Engineering Contradiction:
Improvenetwork flexibilityVSAvoidcontext information retrieval complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent introduces a temporary identification (temporary ID) as an intermediary element that bridges the stateless network function and the shared data layer. This temporary ID contains encoded location information that enables direct access to UE context without requiring complex lookup procedures, thus resolving the contradiction between network flexibility and retrieval complexity

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The system performs preliminary action by generating and assigning a temporary identification to the UE before the actual context retrieval operation. This temporary ID is pre-configured with location information, eliminating the need for complex real-time location resolution and reducing the complexity of context information retrieval

Inventive Principle:
Principle #10Preliminary action

2Productivity

If UE context information is stored in a shared data layer, then network resource utilization is improved, but the overhead for locating and accessing the data increases

Engineering Contradiction:
Improvenetwork resource utilizationVSAvoiddata access time
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The temporary identification is generated and assigned in advance, containing pre-calculated location information for the UE context in the shared data layer. This preliminary action eliminates the need for time-consuming location resolution at data access time, thus reducing data access time while maintaining efficient resource utilization

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The temporary identification is segmented into multiple components, including location information, UE identifier, and other metadata. This segmentation allows for efficient processing and direct routing to the correct data location in the shared data layer, reducing access time overhead

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS12369203B2Network selection with stateless network functions
Publication Date: 2025.07.22 NOKIA TECHNOLOGIES OY
  • US12369203B2 patent drawing
  • US12369203B2 patent drawing
  • US12369203B2 patent drawing

AI summary

Various communication systems may implement network management tools to help manage registration requests from a user equipment. For example, network functions in a communication system with a shared data layer may be used to manage requests from the user equipment. A method may include transmitting a request from a user equipment to a network function. The method may also include receiving at the user equipment a temporary identification from the network function The temporary identification comprises an identifier that helps locate a shared data layer function that stores context information for the user equipment. In addition, the method may include transmitting from the user equipment a subsequent request comprising the temporary identification to another network function or the network function.