Target Network Slice Information for UE Cell Selection
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Solution Overview
Problem
User equipment (UE) performing cell selection in wireless communications networks may lack essential information for selecting cells that support specific network slices, leading to inefficient registration and service initiation due to unsupported slices.
Innovation Solution
The method and apparatus provide target network slice information, including frequency-specific configurations, to assist UE in selecting cells that support the required network slices, using messages exchanged between communication devices, radio network entities, and core networks to facilitate efficient cell reselection and mobility management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If UE performs cell selection without target network slice information, then cell selection process is simplified, but network slice registration efficiency deteriorates
Solution Approach 1:
The network side determines and provides target network slice information to the UE before cell selection is performed. This preliminary provision of information includes indicating which network slices are supported in the current area and frequency-specific configurations, enabling the UE to efficiently select cells that support the required network slices without attempting all cells.
2Adaptability or versatility
If UE attempts to register all network slices without frequency-specific configuration, then registration coverage is maximized, but network resource utilization deteriorates
Solution Approach 1:
The solution provides frequency-specific configuration information for different network slices, indicating which frequency bands support which network slices in specific geographic areas. This localized information enables the UE to adapt its registration attempts to the local network conditions, registering only for network slices that are actually supported on the frequencies available in that area, thereby avoiding wasted registration attempts and optimizing network resource utilization.
3Measurement precision
If target network slice information is provided to UE, then cell selection accuracy is improved, but information transmission overhead increases
Solution Approach 1:
The solution extracts and provides only the essential target network slice information needed for cell selection, specifically indicating which network slices are supported in the current area and their frequency-specific configurations. Rather than providing complete network slice catalogs or unnecessary configuration details, the system extracts and transmits only the critical information that enables accurate cell selection, thereby minimizing information overhead while maintaining high selection accuracy.
Data Source
AI summary
Apparatuses, methods, and systems are disclosed for target network slice information for target network slices. One method includes receiving a first message from a communication device including information indicating a request to register multiple network slices. The method includes determining target network slice information corresponding to multiple target network slices. The target network slice information includes information indicating network slices of the multiple network slices not supported in an area in which the communication device is located and a frequency specific configuration associated with the multiple target network slices. The method includes transmitting a second message to a radio network entity including the target network slice information and the associated frequency specific configuration.