Cell Mobility Configuration Using Reference and Delta Profiles
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing mobility between cells, particularly in scenarios involving multiple candidate cells, which can lead to inefficiencies in signaling and configuration processes.
Innovation Solution
A method and apparatus for enhancing mobility in wireless communication systems by providing a user equipment (UE) with a reference configuration and multiple modification configurations for cells, allowing the UE to identify and perform mobility based on these configurations during transitions between cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If traditional separate configuration methods are used for each cell, then configuration accuracy for each cell is maintained, but signaling overhead increases and mobility efficiency decreases
Solution Approach 1:
The patent merges the configuration information of multiple cells into a single reference configuration structure. Instead of transmitting separate configurations for each cell, the system creates one consolidated reference configuration that contains common parameters, and then uses modification configurations to indicate cell-specific variations. This merging approach significantly reduces signaling overhead while maintaining the ability to accurately configure each individual cell.
Solution Approach 2:
The patent implements preliminary action by pre-configuring reference configurations for multiple potential target cells before mobility occurs. The UE receives and stores these reference configurations in advance, so when mobility is triggered, the UE can quickly identify and apply the appropriate pre-configured reference configuration without needing to receive and process complete configuration data at the moment of handover. This preliminary preparation accelerates mobility execution.
2Measurement precision
If complete cell configurations are provided for multiple candidate cells, then mobility accuracy is improved, but signaling overhead and processing complexity increase
Solution Approach 1:
The patent segments cell configuration information into two distinct parts: a reference configuration containing common parameters applicable to multiple cells, and modification configurations containing cell-specific variations. This segmentation allows the system to maintain configuration accuracy by preserving detailed cell-specific information while reducing overall complexity through the shared reference configuration. The UE only needs to process the smaller modification configurations rather than complete configurations for each cell.
Solution Approach 2:
The patent applies local quality by providing full configuration detail only where necessary (in modification configurations for cell-specific parameters) while using generalized reference configurations for common parameters. This approach maintains measurement precision for cell-specific characteristics while reducing processing complexity for common parameters that are identical across multiple cells. The UE applies local modifications to the reference configuration to achieve accurate cell-specific settings.
3Productivity
If traditional mobility configuration methods are used, then configuration completeness is maintained, but signaling efficiency decreases for subsequent mobility operations
Solution Approach 1:
The patent creates a universal reference configuration structure that can serve multiple cells and multiple mobility operations. Instead of creating separate configuration data for each potential mobility target, the system establishes a single reference configuration that can be reused across multiple cells by applying different modification configurations. This multi-functionality significantly improves signaling efficiency for subsequent mobility operations, as the UE can rapidly switch between cells using the same reference configuration with minimal modifications.
Data Source
AI summary
The present disclosure relates to mobility enhancement in wireless communications. According to an embodiment of the present disclosure, a method performed by a user equipment (UE) in a wireless communication system comprises: receiving, from a first cell, a reference configuration for multiple cells and a plurality of modification configurations for the multiple cells, wherein each of the plurality of modification configurations is related to a corresponding cell; based on triggering a mobility from the first cell to a second cell among the multiple cells, identifying a modification configuration related to the second cell; and performing the mobility from the first cell to the second cell based on the reference configuration and the modification configuration related to the second cell.