RACH Configuration Selection for Network Slices
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently selecting and providing random access channel (RACH) configurations for user equipment (UE) to access multiple slices, leading to increased signaling overhead and potential delays in accessing preferred slices due to the complexity of associating RACH resources with slice groups and prioritization information.
Innovation Solution
A method and apparatus that allow user equipment (UE) to receive multiple RACH configurations, including those identified by slice identifier and priority information, enabling the UE to select and perform random access to a preferred slice group based on received configurations, thereby optimizing access to specific network slices with reduced signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple RACH configurations are provided with slice identifier and priority information, then slice access efficiency is improved, but signaling overhead increases
Solution Approach 1:
The RACH configuration is segmented into multiple types (first type with slice identifier, second type with priority information, third type as default) to handle different slice access scenarios. This segmentation allows the system to provide only the necessary configuration information for each specific access case, improving efficiency while managing signaling overhead through structured division of configuration purposes.
Solution Approach 2:
The patent changes the parameters of RACH configurations by introducing different identification methods (slice identifier vs. priority information) and providing multiple configuration types. This allows flexible parameter selection based on service requirements, enabling efficient slice access while controlling signaling overhead through parameter-based differentiation.
2Reliability
If RACH resources are associated with slice groups and prioritization information, then service quality is improved, but system complexity increases
Solution Approach 1:
Different RACH configuration types are assigned to different slice groups based on their specific service requirements. The first type configures slice-identified resources, the second type configures priority-based resources, and the third type provides default resources. This local quality approach ensures each slice group receives appropriately tailored configurations, improving service quality while managing complexity through structured differentiation.
Solution Approach 2:
The RACH configuration system is designed with multi-functionality to handle various slice access scenarios using a unified framework. The same RACH resources can serve multiple slice groups with different configurations, and the system can adapt to different service requirements (eMBB, mMTC, URLLC) through configurable parameters, reducing overall system complexity while maintaining high service quality.
Data Source
AI summary
The present disclosure relates to a resource selection for a random access in wireless communications. According to various embodiments, a user equipment (UE) may select a random access channel (RACH) configuration for performing a random access to a cell for a slice group preferred by the UE, based on at least one of slice identifier information or slice priority information.