UE Conditional Reconfiguration Handling After Cell Mobility
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless networks, UEs face challenges in handling conditional reconfigurations after performing mobility procedures, particularly when moving to a second cell, as it is unclear whether to release or maintain these configurations, and delta configurations relative to the first cell may not align with the parameters of the second cell.
Innovation Solution
UEs are provided with methods to selectively maintain or release conditional reconfigurations based on indications from the RAN, content of the reconfigurations, and the type of mobility procedure, ensuring alignment with the new cell's parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE performs a mobility procedure to move to a second cell before executing conditional reconfigurations, then the UE can establish connection in the new cell, but it is unclear whether to release or maintain the stored conditional reconfigurations, leading to potential configuration mismatches
Solution Approach 1:
The patent applies dynamics by making the conditional reconfiguration management adaptive and flexible. The UE dynamically determines whether to maintain or release stored conditional reconfigurations based on real-time conditions including the type of mobility procedure executed, the target cell identifier, and network indications. This dynamic approach allows the system to adapt to different mobility scenarios and optimize configuration management accordingly.
Solution Approach 2:
The patent utilizes parameter changes by monitoring and comparing parameters such as cell identifiers, reconfiguration types, and execution conditions to determine the appropriate action. The UE changes its state regarding conditional reconfigurations based on parameter comparisons between the current mobility procedure and stored configurations, enabling intelligent decision-making about what to maintain and what to release.
2Quantity of substance
If delta configurations relative to the first cell are used, then the reconfigurations can be compact and efficient, but they may not align with the parameters of the second cell, causing configuration mismatches
Solution Approach 1:
The patent implements feedback mechanisms where the UE receives indications from the network about the appropriate action to take regarding stored conditional reconfigurations. The UE also provides feedback by reporting the executed mobility procedure type and target cell information, enabling the network to adjust configurations accordingly and ensure proper alignment with the second cell's parameters.
Solution Approach 2:
The patent applies preliminary action by preparing and storing conditional reconfigurations in advance with associated execution conditions. The UE evaluates these pre-prepared configurations against the current mobility scenario and executes appropriate actions before potential configuration mismatches occur, ensuring readiness for the new cell environment.
3Loss of information
If the UE maintains all stored conditional reconfigurations after mobility procedure, then no configurations are lost, but unnecessary configurations may remain causing interference or failures
Solution Approach 1:
The patent applies local quality by treating different conditional reconfigurations differently based on their specific characteristics and relevance to the current mobility scenario. Rather than uniformly maintaining or releasing all configurations, the UE selectively manages each configuration based on its association with specific cells, types of mobility procedures, and current network conditions, optimizing both retention and reliability.
Data Source
AI summary
Embodiments include methods for a user equipment (UE) configured to communicate with a radio access network (RAN) via at least a master cell group (MCG). Such methods include receiving a plurality of conditional reconfigurations from the RAN. Each conditional reconfiguration is associated with a mobility procedure. one or more candidate target cells. and an execution condition. Such methods include storing the plurality of conditional reconfigurations and executing. according to a first reconfiguration. a first mobility procedure towards a first target cell served by a second RAN node. The first mobility procedure and the conditional reconfigurations are associated with a same one of the MCG and a secondary cell group (SCG) for the UE. Such methods include selectively maintaining or releasing each of the stored conditional reconfigurations. after executing the first mobility procedure. Other embodiments include complementary methods for the second RAN node and for a first RAN node.