Secondary Cell Group Beam Failure Recovery Triggering
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Solution Overview
Problem
In wireless communication networks, especially in 5G systems, beam failure recovery procedures are inefficiently triggered during secondary cell group activation, leading to unnecessary power consumption and resource usage when pre-defined conditions are not met, particularly when the secondary cell group is deactivated.
Innovation Solution
Implementing a mechanism where beam failure recovery is triggered only if specific pre-defined conditions are fulfilled upon activating the secondary cell group, such as a beam failure instance counter exceeding a threshold or a running beam failure detection timer, thereby preventing unnecessary random-access procedures and optimizing power and resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam failure recovery procedure is triggered upon secondary cell group activation, then beam failure can be recovered, but unnecessary power consumption and resource usage occurs when pre-defined conditions are not met
Solution Approach 1:
The patent applies preliminary action by checking pre-defined conditions (beam failure instance counter exceeding threshold, running beam failure detection timer) before triggering the beam failure recovery procedure. This ensures that the recovery procedure is only initiated when actually needed, preventing unnecessary power consumption while maintaining reliable beam failure recovery when conditions indicate failure has occurred.
2Reliability
If beam failure recovery procedure is triggered upon secondary cell group activation, then beam failure can be recovered, but unnecessary network resource usage occurs
Solution Approach 1:
The patent applies preliminary action by evaluating pre-defined conditions before initiating the beam failure recovery procedure. The network checks whether the beam failure instance counter exceeds a threshold or if a beam failure detection timer is running, and only triggers recovery when these conditions indicate actual beam failure. This prevents unnecessary consumption of network resources such as random-access channel resources while ensuring recovery is performed when needed.
Data Source
AI summary
Disclosed is a method comprising triggering, in response to activating a secondary cell group, if one or more pre-defined conditions are fulfilled, a beam failure recovery procedure for at least one cell of the secondary cell group.