Radio Link Failure Reporting Across Multipath Connections
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In multipath or multi-connectivity scenarios, reporting radio link failures (RLF) can lead to unnecessary signaling overhead, processing overhead, increased radio resource load, and power consumption, as well as ineffective path recovery due to the UE's inability to determine whether to report RLF via another available path.
Innovation Solution
The user equipment (UE) is configured to detect RLF and determine, based on specific measurement results and thresholds, whether to report the failure via another path, thereby optimizing reporting and reducing unnecessary procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the UE reports RLF via another path without measurement evaluation, then the reporting process is simple and fast, but it causes unnecessary signaling overhead, processing overhead, and power consumption
Solution Approach 1:
The network node pre-configures measurement configurations and thresholds to the UE before RLF detection. This preliminary setup enables the UE to quickly evaluate whether reporting is necessary by comparing current measurements against pre-set thresholds, avoiding unnecessary reporting while maintaining fast response capability.
Solution Approach 2:
The UE performs measurement evaluations and compares results against configured thresholds to determine whether RLF reporting is necessary. This feedback mechanism prevents unnecessary reporting by only triggering reports when measurements indicate actual path failure, thereby reducing signaling overhead and power consumption while maintaining reporting effectiveness.
2Loss of information
If the UE reports all RLF occurrences, then complete failure information is provided to the network, but signaling overhead and processing overhead increase significantly
Solution Approach 1:
The UE evaluates current path measurements against pre-configured thresholds before reporting RLF. This feedback mechanism ensures that only genuine failures (where measurements actually exceed thresholds) are reported, maintaining complete failure information while filtering out false alarms that would increase signaling overhead.
Solution Approach 2:
The invention extracts and removes unnecessary RLF reports by evaluating measurements against thresholds before reporting. Only RLF events that meet the configured criteria are extracted for reporting, while false positives are filtered out, reducing signaling overhead without losing critical failure information.
3Loss of energy
If the UE determines whether to report RLF based on measurement evaluation, then unnecessary reporting is reduced, but the UE needs to perform additional measurements and evaluations
Solution Approach 1:
The network node provides pre-configured measurement configurations and thresholds to the UE before RLF detection. This preliminary action simplifies the UE's decision process by providing ready-made evaluation criteria, reducing the computational complexity of real-time decisions while enabling intelligent reporting suppression.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
There is provided an apparatus, comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform: detecting radio link failure of a path among a plurality of paths, wherein the apparatus is configured to be connected to at least one network node via the plurality of paths; and determining, after detecting the radio link failure and based on at least one measurement result, whether to report the detected radio link failure of the path via another path among the plurality of paths.