Network Slice Selection via Priority Indicators
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Solution Overview
Problem
Current communication methods in 5G networks randomly select network slices for terminal devices, leading to suboptimal service quality due to differences in service quality among slices, without considering the terminal device's preferences or priorities.
Innovation Solution
A communication method where the access network device receives initial context setup requests from the core network that include information about the terminal device's preferred network slices and their priorities, allowing the terminal device to access the most suitable slice for better service, even if it's not part of the allowed slices, by triggering handovers or cell reselections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the access network device randomly selects a network slice for the terminal device, then the terminal device can access any available slice, but the service quality is suboptimal because it does not consider terminal preferences or slice priorities
Solution Approach 1:
The patent changes the selection criterion parameter from random selection to priority-based selection. The core network device determines allowed network slices based on terminal preferences and slice priorities, then the access network device selects slices according to these priority indicators rather than randomly, thereby improving service quality while maintaining selection flexibility
Solution Approach 2:
The patent implements a feedback mechanism where the terminal device provides preferred network slice information to the core network, and the core network feeds back allowed network slice priorities to the access network device. This feedback loop enables the system to adapt slice selection to terminal preferences, resolving the contradiction between flexibility and service quality
2Adaptability or versatility
If the access network device enables the terminal device to access any allowed network slice, then the terminal device has multiple slice options, but it cannot obtain better service because the selection is blind and does not consider service quality differences
Solution Approach 1:
The patent introduces priority indicators as a new parameter to guide slice selection. Instead of blind access to any allowed slice, the system uses priority values to precisely guide the terminal to the most suitable slice, improving service optimization precision while maintaining multiple access options
Solution Approach 2:
The core network device performs preliminary determination of allowed network slices and their priorities before the access network device makes the final selection. This preliminary action provides the access network device with prioritized information, enabling precise slice selection that optimizes service quality
Data Source
AI summary
This application provides a communication method and apparatus, to help a terminal device obtain a better service. The method includes: sending, by an access network device, an initial user equipment UE message to a core network device; and receiving, by the access network device, an initial context setup request message sent by the core network device, where the initial context setup request message includes first information, and the first information is used to indicate at least one network slice preferentially used by a terminal device.