Wireless Device Measurement Time Control via LBT Parameters
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Solution Overview
Problem
Current measurement periods in wireless communication networks, particularly in LTE systems using listen-before-talk (LBT) procedures, are variable and can extend indefinitely, leading to increased UE and network complexity, measurement inaccuracy, and potential changes in radio conditions due to prolonged measurement times.
Innovation Solution
The solution involves determining measurement time based on LBT-related parameters such as channel-holding duration, LBT frequency, success or failure probability, and success/failure rates, allowing for controlled and efficient radio measurements within defined timeframes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If measurement period is extended to accommodate LBT procedures, then measurement reliability is improved, but measurement precision deteriorates due to changing radio conditions
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the measurement period based on LBT configuration parameters (number of LBT attempts, LBT period). Instead of using a fixed measurement period, the system adapts the measurement duration to match the actual LBT requirements, thereby maintaining measurement precision while ensuring reliability.
2Reliability
If measurement period is extended indefinitely, then measurement reliability is improved, but device complexity increases
Solution Approach 1:
The patent reduces UE complexity by changing the measurement period parameter from an indefinite extension to a controlled duration based on LBT configuration. The measurement period is now determined by specific parameters (number of LBT attempts, LBT period) rather than being extended indefinitely, making the system more manageable and less complex.
3Reliability
If measurement period is extended indefinitely, then measurement reliability is improved, but network complexity increases
Solution Approach 1:
The patent reduces network complexity by parameterizing the measurement period based on LBT configuration. Instead of indefinite extension requiring complex network coordination, the measurement period is now controlled through standardized parameters (LBT attempts, LBT period) that simplify network management and reduce complexity.
4Reliability
If measurement period is extended, then measurement reliability is improved, but loss of time increases due to prolonged measurement duration
Solution Approach 1:
The patent optimizes the trade-off between reliability and time loss by parameterizing the measurement period. Instead of indefinite extension, the measurement duration is now controlled by LBT configuration parameters, achieving necessary reliability while minimizing unnecessary time consumption through optimized measurement windows.
Data Source
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AI summary
In one aspect, a wireless device obtains an LBT-related parameter, LBT-related condition, or LBT-related constraint for radio measurements. The wireless device determines a measurement time, based on the obtained LBT-related parameter, LBT-related condition, or LBT-related constraint for radio measurements. The wireless device performs a radio measurement within the determined measurement time, to obtain a measurement result, and reports the measurement result to another node, logs the measurement result and/or uses the measurement result for operational tasks in the wireless device.