Conditional Cell Changes with Preconfigured Measurements
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Solution Overview
Problem
Existing methods for conditional cell changes in multi-radio access technology (RAT) Dual Connectivity (MR-DC) result in high signaling overhead and inefficient cell reconfiguration due to the need to release and re-add measurement configurations and execution conditions for new cell preparations, leading to outdated and unnecessary measurements.
Innovation Solution
A network device generates and transmits a set of measurement configurations and execution conditions associated with selective activation of multiple candidate cells to a terminal device, allowing the device to store and efficiently perform cell changes without reconfiguring existing configurations, ensuring up-to-date conditions for new cell preparations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If measurement configurations and execution conditions are released and re-added for new cell preparations, then cell reconfiguration can be performed, but signaling overhead increases and measurement efficiency decreases
Solution Approach 1:
The patent applies preliminary action by pre-configuring measurement configurations and execution conditions for multiple candidate cells in advance. The terminal device stores these configurations before actual cell changes occur, so when a cell change is needed, the device can immediately activate the appropriate pre-configured measurements without waiting for new configuration signaling. This eliminates the need to release and re-add measurement configurations during cell changes, reducing signaling overhead while maintaining adaptability for serving multiple candidate cells.
2Productivity
If measurement configurations are released and re-added for new cell preparations, then cell changes can be executed, but reconfiguration time increases
Solution Approach 1:
The patent implements preliminary action by preparing and storing measurement configurations and execution conditions for multiple candidate cells before cell changes are executed. When a cell change occurs, the terminal device already has the necessary measurement configurations available in storage, eliminating the time-consuming process of releasing and re-adding configurations during the cell change event. This significantly reduces reconfiguration time while enabling efficient cell change execution.
Solution Approach 2:
The patent applies copying by creating and storing copies of measurement configurations and execution conditions for multiple candidate cells in the terminal device's memory. Instead of transmitting new configurations during each cell change, the device copies the appropriate pre-configured measurements from storage to active use. This copying mechanism enables rapid cell changes without the overhead of real-time configuration transmission and processing.
3Productivity
If measurement configurations are maintained for multiple candidate cells, then cell change efficiency improves, but device complexity increases
Solution Approach 1:
The patent applies the extraction principle by separating measurement configurations and execution conditions into independent, storable units that can be individually activated for different candidate cells. The terminal device extracts and stores these configurations in a structured manner, allowing selective activation based on which candidate cell becomes the target. This extraction approach enables efficient cell changes while managing device complexity through organized, modular configuration storage rather than monolithic configuration management.
Data Source
AI summary
Example embodiments of the present disclosure relate to devices, methods, apparatuses and computer readable storage medium for conditional cell changes. In a method, a terminal device, receives, from a network device, a set of measurement configurations and execution conditions. The set of measurement configurations and execution conditions is associated with selective activation of a plurality of candidate cells. Then, the terminal device stores the set of measurement configurations and execution conditions and performs cell changes among the plurality of candidate cells based on the stored set of measurement configurations and execution conditions.