Network Slice Selection in 5G Wireless Systems
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Solution Overview
Problem
There is a need for an efficient method to select network slices in 5G wireless communication systems, particularly in IoT environments, where various services require different resource allocations and frequency bands, and existing technologies lack a systematic approach for UE to dynamically select the most suitable network slices and base stations.
Innovation Solution
A method and apparatus where user equipment (UE) receives information about available network slices and frequency bands, selects a base station based on this information, and performs a registration procedure, involving the Access and Mobility Management Function (AMF) to determine allowed slices and initiate cell reselection procedures, ensuring optimal network slice selection and resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If network slices are manually configured without dynamic selection, then device complexity is reduced, but adaptability to different IoT services and frequency bands deteriorates
Solution Approach 1:
The UE autonomously selects network slices and base stations by itself based on received information about allowed network slices and frequency bands, without requiring manual configuration or complex external control mechanisms. This self-service approach enables the device to adapt to different IoT services and frequency bands dynamically while keeping the device complexity manageable through automated decision-making algorithms.
2Adaptability or versatility
If UE autonomously selects network slices dynamically, then adaptability to different services is improved, but processing time and complexity increase
Solution Approach 1:
The network side (base station or core network) pre-configures and transmits information about allowed network slices and their associated frequency bands to the UE before the UE needs to make selection decisions. This preliminary action enables the UE to perform autonomous selection quickly by comparing pre-received configuration data with current service requirements, rather than processing complex selection criteria in real-time, thus reducing processing time while maintaining dynamic adaptability.
3Measurement precision
If comprehensive information about network slices and frequency bands is provided to UE, then selection accuracy is improved, but information transmission overhead increases
Solution Approach 1:
Instead of transmitting complete and exhaustive information about all network slices and frequency bands, the system extracts and transmits only the essential selection criteria and allowed network slice identifiers that the UE needs to make accurate selection decisions. This extraction approach maintains selection accuracy by providing sufficient information while significantly reducing the information transmission overhead compared to sending comprehensive network configuration data.
Data Source
AI summary
A method, performed by a user equipment (UE), of selecting a network slice includes: receiving information about at least one network slice and information about frequency operating bands that are allowed for the at least one network slice; selecting a base station (BS) to be accessed, based on the received information about the at least one network slice and the information about the frequency operating bands that are allowed for the at least one network slice; and performing a registration procedure on the selected BS.