Terminal Slice Information Sharing for RAN Slicing
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Solution Overview
Problem
Current 3GPP specifications face difficulties in appropriately sharing slice information between User Equipment (UE) and the network for RAN slicing, hindering the construction of self-organizing networks (SON) that correspond to slice-aware cell reselection and random access procedures.
Innovation Solution
A terminal and radio communication system that includes a control unit for managing associations between neighboring cells and a transmission unit for sharing slice-related information, enabling the UE to transmit neighboring cell information, including slice information, to the network, and allowing the network to receive and process this information for optimal slice support and handover decisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If slice information is shared between UE and network for RAN slicing, then slice-aware cell reselection and random access procedures can be implemented, but the complexity of information management and processing increases
Solution Approach 1:
The patent segments slice information into distinct components: neighboring cell information, slice support capability indicators, and random access procedure parameters. This segmentation allows the UE and network to manage and process specific slice-related parameters independently, reducing overall information management complexity while enabling slice-aware operations.
Solution Approach 2:
The patent implements preliminary action by having the network pre-configure and provide slice information to the UE before actual cell reselection or random access operations. The UE receives and stores neighboring cell information including slice support capabilities in advance, enabling it to perform slice-aware cell reselection without real-time complexity.
2Reliability
If the UE transmits detailed neighboring cell information including slice information, then the network can make optimal handover decisions, but the amount of data to be transmitted and processed increases
Solution Approach 1:
The patent extracts only the essential slice-related parameters from neighboring cell information for transmission to the network. Instead of transmitting complete cell configuration details, the UE transmits specifically extracted elements such as slice support capability indicators and relevant random access parameters, reducing data volume while maintaining handover decision accuracy.
Solution Approach 2:
The patent creates a universal information structure that serves multiple functions: the transmitted neighboring cell information with slice indicators simultaneously supports handover decisions, cell reselection, and random access procedure optimization. This multi-functionality reduces redundant transmissions and overall data volume.
3Reliability
If slice-specific random access procedures are implemented, then random access success rate for sliced services improves, but the complexity of random access management increases
Solution Approach 1:
The patent applies local quality by configuring different random access parameters specifically for different slices rather than using uniform parameters for all access types. Each slice can have optimized random access parameters (such as preamble formats, power control settings) tailored to its specific requirements, improving success rate while managing complexity through localized configuration.
Solution Approach 2:
The patent uses copying by reusing the existing random access framework and procedures from standard LTE/5G protocols, copying only the necessary parameters and structures needed for slice-specific operations. This approach leverages proven mechanisms rather than creating entirely new complex procedures.
Data Source
AI summary
A terminal selects a cell supporting a slice in which a network is divided into specific units, or a cell not supporting the slice, and transmits a report including slice related information to the network when the selected cell does not support a requested slice.