Proactive Connection Re-establishment in Wireless Systems
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Solution Overview
Problem
Current connection re-establishment procedures in wireless communication systems are delayed due to the need for radio link failure detection, which can increase interruption time during handovers, especially when radio conditions are poor and target cell identity is unclear.
Innovation Solution
Implementing a method where a serving base station sends dedicated signaling to a mobile device to initiate a deliberate connection re-establishment procedure without waiting for radio link failure, allowing proactive handover to a new access system based on predetermined criteria and rules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the mobile device waits for radio link failure detection before initiating connection re-establishment, then the re-establishment procedure follows standard protocols, but the interruption time increases due to delayed initiation
Solution Approach 1:
The patent applies preliminary action by enabling the mobile device to initiate connection re-establishment before radio link failure is detected. The device uses predetermined criteria (such as downlink quality thresholds and cell identity verification) to proactively trigger re-establishment, eliminating the waiting period for failure detection and reducing interruption time while maintaining connection reliability
2Loss of time
If the mobile device initiates deliberate connection re-establishment without radio link failure, then the interruption time is reduced, but the complexity of determining when to initiate increases
Solution Approach 1:
The patent applies parameter changes by transforming the initiation criterion from a binary radio link failure state to a continuous evaluation of downlink quality parameters. The device monitors parameters such as reference signal received power (RSRP) and reference signal received quality (RSRQ), comparing them against predetermined thresholds to determine when to initiate re-establishment, thereby simplifying the decision logic while reducing interruption time
Data Source
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AI summary
A method is disclosed where information is sent to at least one mobile device in a connected mode first system. The information is indicative that a deliberate connection re-establishment is to be used to access at least one second system at least in certain situations when the at least one mobile device is in connected mode. The mobile device in the first system can process the information, and based on the processing, initiate a deliberate connection re-establishment procedure to access a second system.