Remote UE Path Recovery for Direct Path Configuration Failures
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Solution Overview
Problem
In multi-path operations, the behavior of remote UE when adding or changing a direct path fails is not specified, leading to configuration conflicts and mismatches between the remote UE and the network device.
Innovation Solution
The remote UE initiates RRC reestablishment or transmits failure information to the network device when adding or changing a direct path fails, and the network device receives and responds to these messages to ensure consistent configuration understanding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the remote UE adds or changes a direct path according to network device indication, then the communication reliability is improved, but when the adding or changing fails, configuration conflicts and mismatches occur between remote UE and network device
Solution Approach 1:
The patent implements a feedback mechanism where the remote UE sends failure information to the network device when direct path addition or changing fails. This feedback loop allows the network device to understand the actual state of the remote UE, preventing configuration mismatches and enabling the network device to adjust its configuration accordingly, thus resolving the contradiction between improving reliability through multi-path and avoiding configuration conflicts.
2Productivity
If the remote UE operates on multi-path (direct path and indirect path), then the throughput and reliability are enhanced, but the device complexity and operation complexity increase
Solution Approach 1:
The patent enables the remote UE to autonomously determine its own state (whether direct path addition or changing succeeded or failed) and self-manage the failure reporting process by sending failure information to the network device. This self-service approach simplifies the overall system operation by making the remote UE responsible for its own state management and communication, reducing the operational complexity despite the enhanced multi-path functionality.
3Device complexity
If the remote UE initiates RRC reestablishment or transmits failure information when direct path operations fail, then the configuration consistency is improved, but the signaling overhead and time consumption increase
Solution Approach 1:
The patent specifies that the remote UE should send failure information to the network device as a preliminary action when direct path addition or changing fails, before any further configuration operations are attempted. This preliminary failure reporting ensures that the network device has accurate configuration information from the outset, preventing subsequent configuration conflicts and reducing the need for repeated signaling exchanges, thus balancing configuration consistency with time efficiency.
Data Source
AI summary
A path processing apparatus, applicable to a remote terminal equipment configured with an indirect path, includes: a first receiver configured to receive first indication information transmitted by a network device, the first indication information comprising an indication for adding or changing a direct path in addition to the indirect path; and first processor circuitry configured to initiate RRC reestablishment when a direct path is added or changed according to the first indication information and the adding or changing a direct path fails.