Terminal RRC Release Coordination with Link Failure Detection
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Solution Overview
Problem
In the process of Radio Resource Control (RRC) release, terminals face challenges in coordinating RRC release procedures with Radio Link Failure (RLF) detection and RRC reestablishment, leading to potential failures and reliability issues, especially in Non-Terrestrial Networks (NTN) with large transmission delays.
Innovation Solution
A control processing method and apparatus that allow a terminal to stop or cancel RRC release procedures when an RRC release message is received during RLF detection or RRC reestablishment, or when these procedures are executed during a delay period, thereby avoiding conflicts and improving reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal waits for a specified delay period after receiving an RRC release message before executing subsequent operations, then the reliability of RRC release procedure is improved, but the time consumption increases
Solution Approach 1:
The patent implements dynamic adjustment of the delay period based on whether RLF detection or RRC reestablishment is ongoing. The delay period is extended when these procedures are detected, allowing the terminal to coordinate RRC release with ongoing procedures. This dynamic timing adjustment resolves the contradiction by making the delay adaptive rather than fixed, ensuring reliability only when necessary while minimizing unnecessary time consumption.
2Speed
If the terminal executes RLF detection and RRC reestablishment procedures concurrently with RRC release, then the responsiveness to radio link failures is improved, but the system reliability deteriorates due to potential conflicts
Solution Approach 1:
The patent applies preliminary action by checking whether RLF detection or RRC reestablishment is ongoing before the terminal executes RRC release operations. This preliminary check allows the terminal to proactively identify potential conflicts and adjust the delay period accordingly, preventing reliability issues before they occur while maintaining responsive failure detection.
Solution Approach 2:
The patent introduces a coordinating mechanism that acts as an intermediary between RRC release procedures and RLF detection/RRC reestablishment procedures. This coordinator monitors the state of ongoing procedures and mediates the timing of RRC release execution, allowing concurrent operations to proceed safely without conflicts, thus maintaining both responsiveness and reliability.
3Productivity
If the terminal immediately executes subsequent operations after receiving an RRC release message, then the productivity is improved, but the reliability of the procedure deteriorates
Solution Approach 1:
The patent implements dynamic delay adjustment based on the terminal's current operational state. When RLF detection or RRC reestablishment is not ongoing, the delay period is minimized or eliminated, allowing immediate execution and high productivity. When these procedures are detected, the delay is extended to ensure reliability. This dynamic approach resolves the contradiction by adapting the delay to actual system conditions rather than applying a fixed delay unconditionally.
Data Source
AI summary
The present disclosure provides a control processing method and apparatus, and a storage medium, where the control processing method includes: in response to determining that an RRC release message is received when a target procedure is executed or in response to determining that a target procedure is executed during a delay period, stopping or canceling the target procedure or an RRC release procedure; where the delay period is from a moment when the RRC release message is received by the terminal to a moment when an RRC release related behavior is executed by the terminal after a specified delay, and the target procedure is an RLF related procedure or an RRC reestablishment procedure. In the present disclosure, the impact of RRC release procedure on the RLF related procedure and the RRC reestablishment procedure can be reduced, which can improve radio link reliability, and thereby enhance system performance.