Multi-Connectivity RRC Reconfiguration Flags for UE Message Conflicts
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Solution Overview
Problem
Existing multi-connectivity systems face issues with reconfiguration messages leading to potential service interruptions due to conflicts between simultaneous RRC reconfiguration messages from different nodes, resulting in UE re-establishment failures.
Innovation Solution
Implementing a flag mechanism to distinguish between actions such as discarding, executing after, or prioritizing reconfiguration messages, based on the existing configuration status, to manage conflicts and reduce re-establishment failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the UE executes multiple RRC reconfiguration messages simultaneously, then the network can perform reconfiguration operations, but conflicts between messages cause service interruptions and re-establishment failures
Solution Approach 1:
The network node performs preliminary actions by evaluating whether a new reconfiguration message should be discarded or executed before the UE actually executes it. The system determines the appropriate action (discard or execute) in advance based on the existing reconfiguration message status, preventing conflicts before they occur and ensuring service continuity while maintaining reconfiguration productivity
2Reliability
If the UE discards reconfiguration messages to avoid conflicts, then service interruptions are reduced, but reconfiguration operations are delayed
Solution Approach 1:
The system performs preliminary evaluation of reconfiguration messages to determine whether to discard or execute them before execution occurs. This advance determination prevents conflicts that would cause service interruptions while minimizing unnecessary delays, allowing the UE to quickly execute valid reconfiguration messages without waiting for conflict resolution
Solution Approach 2:
The system converts the potential harm of message conflicts into a benefit by using the conflict detection mechanism to identify and execute only the appropriate reconfiguration messages. The evaluation process that might seem like a delay actually prevents harmful conflicts and ensures that reconfiguration operations are executed efficiently and correctly
3Productivity
If the network sends multiple reconfiguration messages concurrently, then network operations are efficient, but UE processing complexity increases
Solution Approach 1:
The system segments the reconfiguration message handling process into distinct phases: receiving the message, evaluating whether to discard or execute it, and then executing the appropriate action. This segmentation simplifies UE processing by breaking down the complex task of handling multiple concurrent reconfiguration messages into manageable steps, while the network can continue sending messages efficiently
Solution Approach 2:
The system implements feedback mechanisms where the UE reports the status of reconfiguration message execution to the network node. This feedback loop allows the network to understand which messages were successfully executed and which were discarded, enabling more efficient future reconfiguration operations while keeping UE processing manageable through structured feedback protocols
Data Source
AI summary
A method comprising, during multi-connectivity: sending a re-configuration message for execution by a user equipment; and sending a flag indicating an action to be taken by the user equipment during or after execution by the user equipment of an existing reconfiguration message, wherein the flag is configured to distinguish between at least two of the following actions: discarding the reconfiguration message; executing the reconfiguration message after executing an existing reconfiguration message; or prioritizing execution of the reconfiguration message over execution of an existing reconfiguration message.