Network Slice Frequency Priority Updates for Secure Cell Access
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Solution Overview
Problem
Current wireless communication networks face challenges in efficiently utilizing network slices due to potential security risks from unencrypted slice information transmission and inaccurate frequency point priority information, leading to suboptimal service performance and latency issues.
Innovation Solution
Implementing a method and device that restricts the use of slice information to cell selection, reselection, and access, while ensuring it is not reported to the network device, and dynamically updates frequency point priority information based on network-side indications to ensure accurate network access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If slice information is transmitted to network device for network slice access, then network slice service can be established, but security risk increases due to unencrypted transmission
Solution Approach 1:
The patent extracts the slice information processing function from the AS and places it in the NAS layer. The NAS determines whether to send slice information to AS based on mode indication from core network, and the AS only uses slice information for cell selection, reselection, and resource selection without reporting it to network devices, thereby removing the security risk while maintaining network slice access capability
Solution Approach 2:
The patent introduces NAS as an intermediary between the terminal and AS. NAS receives slice information from core network, determines whether to forward it to AS based on mode indication, and controls the transmission of slice information. This intermediary mechanism enables network slice access while preventing unencrypted transmission of sensitive data to network devices
2Ease of operation
If frequency point priority information is saved by terminal for network slice, then terminal can perform cell selection and reselection, but accuracy decreases when network side provides different priority information
Solution Approach 1:
The patent makes the frequency point priority information dynamic by introducing a timer mechanism. The terminal obtains first frequency point priority information from network side, saves it, and uses it for cell selection and reselection. When timer expires or new priority information is received, the terminal updates the saved information. This dynamic mechanism ensures the terminal always uses the most current and accurate frequency priority information from the network side while maintaining the ability to perform cell selection and reselection
Solution Approach 2:
The patent implements a feedback mechanism where the terminal receives frequency point priority information from the network side, processes it, and uses it to update its saved information. The terminal feeds back the usage of this information for cell selection and reselection operations, ensuring continuous accuracy improvement while maintaining operational capability
Data Source
AI summary
Disclosed are a method and apparatus for using slicing information, and a device and a storage medium. The method includes: when first frequency point priority information and second frequency point priority information for a network slice are different, using the second frequency point priority information, or ignoring the first frequency point priority information, or updating the first frequency point priority information according to the second frequency point priority information. The first frequency point priority information is frequency point priority information saved by the terminal for the network slice, and the second frequency point priority information is frequency point priority information indicated or configured by a network side for the network slice.