Slice-Specific Cell Selection for Efficient Network Access
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Solution Overview
Problem
The existing wireless communication systems do not provide slice-specific information during cell selection and reselection, leading to UEs selecting inappropriate network slices, resulting in repeated rejections and inefficient access.
Innovation Solution
The method involves providing slice-specific cell selection and reselection information, including S-NSSAI, SST, and resource information for random access, allowing UEs to select appropriate network slices and perform efficient random access procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If slice-specific cell selection information is not provided, then the system maintains simplicity in information structure, but UEs select inappropriate network slices resulting in repeated rejections and inefficient access
Solution Approach 1:
The patent segments cell selection information by network slice, providing dedicated selection criteria for each slice type. This allows UEs to efficiently select appropriate slices without overwhelming complexity, as information is divided into slice-specific categories rather than a single undifferentiated information structure.
Solution Approach 2:
The patent applies local quality by providing tailored cell selection information specific to each network slice type rather than uniform information for all slices. Each slice receives customized selection criteria based on its specific requirements, improving matching accuracy while maintaining manageable complexity through targeted information delivery.
2Reliability
If slice-specific information is provided in system information, then UEs can select appropriate network slices efficiently, but the system information structure becomes more complex
Solution Approach 1:
The patent segments system information into slice-specific components, organizing cell selection information by network slice type. This segmentation improves reliability by ensuring UEs receive appropriate slice information while managing complexity through structured organization of information elements.
Solution Approach 2:
The patent implements preliminary action by providing slice selection information in advance through system information broadcasting before UE access attempts. This allows UEs to pre-determine appropriate slices, improving selection accuracy and reducing failed access attempts, while the information is delivered efficiently through existing system information channels.
3Loss of time
If UEs perform random access without slice-specific guidance, then the access procedure remains simple, but UEs experience repeated rejections before finding appropriate cells
Solution Approach 1:
The patent applies preliminary action by providing slice selection information to UEs before they initiate random access procedures. This allows UEs to pre-identify appropriate target cells and slices, significantly reducing access time and repeated rejections, while the procedure itself remains straightforward through enhanced guidance information.
Solution Approach 2:
The patent implements feedback mechanisms where the network provides slice selection information based on UE characteristics and network conditions. This feedback loop enables UEs to make informed selection decisions, reducing access time and rejections while maintaining procedural simplicity through automated guidance.
Data Source
AI summary
Method, systems and devices for slice specific and/or access category specific information. The present disclosure provides wireless communication method for use in a wireless terminal and the wireless communication method comprises receiving, from a wireless network node, cell selection information associated with at least one network slice or with at least one access category, and selecting a cell based on the cell selection information.