RRC Configuration Failure Handling in Multi-Connectivity Wireless Systems
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Solution Overview
Problem
In wireless communication systems, particularly in multi-connectivity scenarios where primary and secondary network devices have different standards, such as LTE and NR, there is a need to efficiently handle RRC configuration failures and handovers, as existing methods are inefficient in detecting and responding to configuration failures between network devices and terminal devices.
Innovation Solution
The proposed solution involves a method where a terminal device directly receives an RRC configuration from a secondary network device and sends indication information to a primary network device when the configuration fails, allowing for timely detection and subsequent operations, and includes specific message structures and handover procedures to ensure seamless communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the terminal device receives RRC configuration from the secondary network device directly, then the speed of configuration delivery is improved, but the complexity of failure detection and reporting mechanisms increases
Solution Approach 1:
The patent implements a feedback mechanism where the terminal device sends indication information back to the primary network device when RRC configuration failure is detected. This feedback loop enables the primary network device to be notified of the failure condition, allowing for coordinated response and resolution of the configuration issue between multiple network devices.
Solution Approach 2:
The patent divides the RRC configuration management into separate functional segments: the secondary network device handles configuration delivery, the terminal device handles configuration execution and failure detection, and the primary network device handles coordination and overall control. This segmentation allows each component to focus on specific tasks, improving overall system efficiency while managing complexity.
2Productivity
If the terminal device directly receives RRC configuration from the secondary network device, then the productivity of configuration processing is improved, but the reliability of configuration failure detection may worsen
Solution Approach 1:
The terminal device performs self-diagnosis by detecting whether the received RRC configuration from the secondary network device is successful or failed. The terminal device autonomously determines the configuration status and generates appropriate indication information without requiring continuous external verification, thereby maintaining high productivity while ensuring reliable failure detection.
Solution Approach 2:
The terminal device provides feedback to the primary network device about the configuration success or failure status. This feedback mechanism ensures that the primary network device is informed of the actual configuration state, enabling reliable failure detection and coordinated response, while the direct delivery mechanism maintains processing efficiency.
3Speed
If the terminal device sends indication information to the primary network device upon configuration failure, then the speed of failure response is improved, but the complexity of message handling and coordination increases
Solution Approach 1:
The terminal device is pre-configured with the capability to detect RRC configuration failures and generate indication information. The failure detection mechanism is established in advance, so when a configuration failure occurs, the terminal device can immediately generate and send the appropriate indication information to the primary network device without requiring complex real-time analysis or coordination procedures.
Solution Approach 2:
The patent extracts the essential failure indication function from the complex RRC configuration management process. By separating the failure detection and indication sending function from the configuration delivery and processing functions, the system achieves fast failure response while managing complexity through functional decomposition.
4Adaptability or versatility
If the terminal device uses direct communication with secondary network device, then the adaptability to different network standards is improved, but the difficulty of handling inter-standard compatibility issues increases
Solution Approach 1:
The primary network device acts as an intermediary that coordinates between the terminal device and the secondary network device. When the terminal device receives RRC configuration from the secondary network device (which may use different standards like NR), the primary network device facilitates the communication and handles compatibility issues. This intermediary approach enables the terminal to adapt to different network standards while managing the complexity of inter-standard compatibility through centralized coordination.
Data Source
AI summary
This application provides failure processing methods, handover methods, terminal devices, and network devices. One method includes receiving a radio resource control (RRC) configuration of a secondary network device, if the RRC configuration of the secondary network device is from the secondary network device and the RRC configuration fails, sending, to a primary network device, first indication information for indicating a configuration failure of the RRC configuration.