Slice-Guided Cell Reselection for Reliable Wireless Service Access
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Solution Overview
Problem
In wireless communication systems, terminal devices often select the strongest cell on a frequency point, which may not correspond to the slicing service they support, leading to continuous cell reselection and delayed access to suitable cells, affecting normal service transmission.
Innovation Solution
Terminal devices perform cell selection or reselection based on slice information, including parameters such as slice identity, cell identity, and frequency point index, to quickly access cells supporting their slicing services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the terminal device selects the strongest cell on a frequency point, then the cell selection process is simple and fast, but the selected cell may not support the required slicing service, causing service transmission failure
Solution Approach 1:
The patent changes the cell selection parameter from purely signal strength-based to slice information-based. The terminal device determines the target cell according to slice information (such as slice identity, cell identity, frequency point index) rather than only selecting the strongest cell, ensuring the selected cell supports the required slicing service while maintaining selection efficiency
Solution Approach 2:
The patent introduces slice information as an intermediary parameter in the cell selection process. The network device provides slice information to the terminal device, which then uses this intermediate information to determine the appropriate target cell, bridging the gap between signal strength selection and service requirement matching
2Reliability
If the terminal device continuously performs cell reselection to find a suitable cell, then the service transmission reliability is improved, but the access time is significantly delayed
Solution Approach 1:
The patent applies preliminary action by having the network device provide slice information to the terminal device in advance. This allows the terminal device to determine the appropriate target cell directly without needing to perform continuous cell reselection operations, thus ensuring service reliability while minimizing access time
Solution Approach 2:
The patent implements a feedback mechanism where the network device provides slice information to the terminal device based on the terminal's slicing service requirements. This feedback enables the terminal to make informed cell selection decisions, avoiding the need for repeated reselection attempts and reducing access time while maintaining reliability
Data Source
AI summary
Provided in embodiments of the present disclosure are a wireless communication method, a terminal apparatus, and a network apparatus. The method includes: performing, by a terminal device, cell selection or reselection according to slice information, or determining, by the terminal device, a target cell for the cell selection or reselection according to the slicing information. The slice information comprises at least one of: a slice identity, Network Slice Selection Assistance Information (NSSAI), a slice type or a service type, a cell identity, a cell identity range, a frequency point index, a Public Land Mobile Network (PLMN), and a Tracking Area (TA) identity.