Registration Area Network Slice Selection Service
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Solution Overview
Problem
The development of 5G NR networks faces challenges in effectively utilizing the registration area parameter for efficient network slice management and end device mobility, leading to increased signaling traffic and inefficient device registration updates.
Innovation Solution
A registration area-based application exposure and network slice selection service that translates tracking area information into map information and generates multiple instances of allowed network slices, selecting the optimal slice based on the end device's mobility pattern, thereby reducing signaling traffic and enhancing network slice provisioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional network slice selection methods are used without registration area optimization, then network slice provisioning can be maintained, but signaling traffic increases and device registration updates become inefficient
Solution Approach 1:
The network is divided into multiple registration areas, each associated with specific network slices. This segmentation allows devices to register once at the registration area level rather than individually for each network slice, reducing signaling traffic while maintaining efficient slice provisioning.
Solution Approach 2:
Network slices are pre-configured and associated with registration areas before device connection. This preliminary action enables the network to quickly determine appropriate slice provisioning based on device location without requiring real-time slice-by-slice negotiation, improving provisioning efficiency and reducing signaling overhead.
2Measurement precision
If frequent device registration updates are performed to maintain network slice accuracy, then network slice selection precision is improved, but signaling traffic and network overhead increase
Solution Approach 1:
The system dynamically adjusts registration update frequency based on device mobility patterns and registration area boundaries. Devices perform registration updates only when crossing registration area boundaries rather than at fixed time intervals, maintaining location accuracy while minimizing unnecessary signaling traffic.
Solution Approach 2:
Multiple tracking areas are merged into a single registration area, allowing devices to move across multiple tracking areas without triggering registration updates until they leave the registration area. This merging reduces registration update frequency while maintaining sufficient location precision for network slice selection.
3Adaptability or versatility
If multiple instances of network slices are generated for all devices, then network slice availability is improved, but device complexity and processing overhead increase
Solution Approach 1:
Multiple network slice instances are generated and activated locally at each registration area based on local network conditions and device requirements. This local quality approach allows devices to access multiple slices without requiring global coordination, improving slice availability while reducing device complexity through localized management.
Data Source
AI summary
A method, a device, and a non-transitory storage medium are described in which a registration area-based application exposure and network slice selection service is provided. The service may include the generation of multiple sets of allowed network slices based on a type of end device, current tracking area, and registration area information. The service may also include selecting one of the sets of allowed network slices based on a mobility pattern of the end device. The service may also translate allowed network slices, current tracking area and registration area information, and expose the translated information to an application function.