Dedicated Signaling for Slice-Based Cell Reselection
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently signaling network slice information to devices, leading to ambiguities and inconsistencies in cell reselection processes.
Innovation Solution
The proposed solution involves using dedicated signaling to provide identifiers of slice groups and cell reselection priorities for each frequency, which overwrite or take precedence over information received in broadcast signaling. This approach allows for slice-based cell reselection by combining slice information from both dedicated and broadcast signaling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If slice information is provided through both broadcast signaling and dedicated signaling, then network flexibility and device-specific customization are improved, but ambiguities and inconsistencies in cell reselection processes occur
Solution Approach 1:
The patent segments slice information into two types of signaling: broadcast signaling for general network information and dedicated signaling for device-specific configurations. This segmentation allows the system to maintain flexibility in providing customized slice information while establishing clear rules for resolving conflicts between the two signaling types, thereby ensuring consistent cell reselection behavior.
Solution Approach 2:
The patent applies local quality by allowing dedicated signaling to override broadcast signaling for device-specific slice information. This means that while broadcast signaling provides general network parameters, dedicated signaling can locally customize slice information for individual devices, resolving ambiguities by prioritizing device-specific configurations over general broadcasts.
2Ease of operation
If cell reselection priorities are provided in both broadcast and dedicated signaling, then device-specific optimization is improved, but conflicts and ambiguities in priority application arise
Solution Approach 1:
The patent applies preliminary action by pre-establishing a conflict resolution rule before cell reselection occurs: dedicated signaling takes precedence over broadcast signaling for cell reselection priorities. This preliminary rule simplifies the device's processing logic by providing clear guidance on how to handle conflicting information, reducing the complexity of resolving ambiguities during actual cell reselection operations.
3Loss of information
If slice information is replicated in both broadcast and dedicated signaling, then information completeness is improved, but signaling overhead and processing burden increase
Solution Approach 1:
The patent applies the extraction principle by identifying which slice information elements should be included in dedicated signaling versus broadcast signaling. Specifically, cell reselection priorities are extracted to dedicated signaling for device-specific optimization, while other slice information can remain in broadcast signaling. This selective extraction reduces redundant information transmission while maintaining necessary device-specific customization.
Data Source
AI summary
Various aspects of the present disclosure relate to a device (e.g., a user equipment (UE)) that receives dedicated signaling and broadcast signaling to communicate slice information to the device. The dedicated signaling includes, for each of one or more frequencies, identifiers of slice groups supported by the frequency and cell reselection priorities corresponding to the slice groups. These cell reselection priorities overwrite or take the place of cell reselection priorities received in the broadcast signaling. Other information received in the broadcast signaling, including an allowed list (which lists one or more cells supporting a slice group) or an excluded list (which lists one or more cells that do not support a slice group), are used for slice based cell reselection.