Wireless Link Recovery Using Pre-configured Fallback Parameters
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Solution Overview
Problem
Wireless communication systems face challenges in quickly recovering from radio link failures, leading to increased setup time and signaling overhead, which can result in interruptions to user data communication and strain on battery life in user equipment devices.
Innovation Solution
Implementing techniques that allow wireless devices and cellular base stations to rapidly re-establish a wireless link using previously provided configuration information, such as the most recent or fallback configuration, to reduce setup time and signaling overhead during radio link failure recovery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional radio link failure recovery procedures are used, then the wireless link can be re-established, but the setup time and signaling overhead increase, causing service interruptions and battery strain
Solution Approach 1:
The patent applies preliminary action by pre-configuring fallback wireless link parameters and configuration information before radio link failure occurs. When failure happens, the device can immediately use these pre-prepared configurations without needing to negotiate new parameters, thus reducing setup time while maintaining reliable recovery
Solution Approach 2:
The patent segments the wireless link configuration into critical parameters that can be pre-configured and stored as fallback options. This segmentation allows the device to quickly restore essential communication functions using pre-stored configuration segments rather than re-negotiating the entire link configuration
2Reliability
If traditional radio link failure recovery procedures are used, then the wireless link can be re-established, but signaling overhead increases, consuming more network resources and causing interruptions
Solution Approach 1:
The patent extracts and removes the need for extensive signaling exchange during recovery by pre-configuring fallback parameters. The critical configuration information is extracted and stored beforehand, eliminating the need for multiple signaling rounds between device and network during the recovery process
Solution Approach 2:
The patent uses copying by creating and storing copies of wireless link configuration information in advance. When radio link failure occurs, the device can directly use these copied configurations without needing to request or negotiate new configurations, significantly reducing signaling overhead
3Reliability
If radio link failure recovery takes longer, then more thorough configuration can be done, but user data communication is interrupted for longer periods
Solution Approach 1:
The patent performs configuration preparation in advance by pre-configuring fallback wireless link parameters before failure occurs. This preliminary action ensures that accurate configuration is already available when needed, eliminating the trade-off between configuration thoroughness and communication continuity
Data Source
AI summary
This disclosure relates to techniques for quickly recovering from radio link failure in a wireless communication system. A wireless device may establish a wireless link with a cell. The wireless device may detect radio link failure for the wireless link. The wireless device may attempt to re-establish the wireless link using a previously provided wireless link configuration. If the cell accepts the attempt re-establish the wireless link using the previously provided wireless link configuration, the wireless link may be re-established in accordance with the previously provided wireless link configuration.