RedCap UE Failure Reporting Through Capability Signaling
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Solution Overview
Problem
Existing wireless communication systems, particularly those supporting RedCap UEs, face challenges in efficiently reporting connection establishment failure (CEF) and radio link failure (RLF) information without capability signaling, which is crucial for ensuring service continuity, especially for critical services like emergency calls.
Innovation Solution
A mechanism is introduced to allow RedCap UEs to report CEF and RLF information by transmitting a terminal capability information message that includes parameter information on CEF and RLF, enabling the network to request and receive these reports through dedicated messages, ensuring that RedCap UEs can access cells for emergency services even if initially considered barred due to reduced receiver branches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If RedCap UEs transmit terminal capability information messages including CEF and RLF parameter information, then failure information reporting efficiency is improved, but device complexity increases due to additional signaling mechanisms
Solution Approach 1:
The patent segments the failure information reporting into distinct components: CEF parameter information for connection establishment failures and RLF parameter information for radio link failures. This segmentation allows RedCap UEs to report different types of failure information independently through structured messages, improving reporting efficiency while managing complexity through modular information organization.
Solution Approach 2:
The patent implements preliminary capability signaling where RedCap UEs transmit terminal capability information messages before actual failure reporting. This preliminary action establishes the framework and parameters for subsequent failure information exchange, enabling efficient reporting mechanisms to be activated only when needed while pre-configuring the necessary signaling structures.
2Reliability
If RedCap UEs are allowed to access cells for emergency services, then service continuity is improved, but network resource allocation becomes more complex
Solution Approach 1:
The patent applies local quality by providing differentiated access rights for RedCap UEs based on service type. Emergency services receive special consideration and are permitted to access barred cells, while other services follow standard barring rules. This localized differentiation ensures service continuity for critical emergency communications without requiring network-wide complexity changes.
Solution Approach 2:
The patent introduces terminal capability information messages as intermediaries that carry parameter information about CEF and RLF conditions. These messages act as mediators between the RedCap UE and the network, enabling the network to make informed decisions about resource allocation and access rights while simplifying the overall management complexity through standardized intermediate communication.
3Measurement precision
If capability signaling is implemented for CEF and RLF reporting, then information accuracy is improved, but loss of time increases due to additional signaling procedures
Solution Approach 1:
The patent implements partial action by transmitting only the necessary capability information and parameter details when failure reporting is needed. Rather than continuously signaling all possible capabilities, the system transmits terminal capability information messages selectively, including CEF and RLF parameter information only when relevant to the current communication context, thereby reducing time loss while maintaining accuracy.
Data Source
AI summary
Provided are a method and apparatus for reporting failure information in a wireless communication system. A terminal may transmit a terminal capability information message including at least one of connection establishment failure (CEF) parameter information and radio link failure (RLF) parameter information. Further, the terminal may receive a terminal information request message requesting at least one of a CEF report and a RLF report, and transmit a terminal information response message including at least one of the CEF report and the RLF report.