Channel Occupancy Measurement Quality Control
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Solution Overview
Problem
Existing wireless communication systems lack measurement and accuracy requirements for channel occupancy, leading to uncertain accuracy of channel occupancy measurements, which affects the reliability of reported results and interpretation by network nodes.
Innovation Solution
The system introduces a method for wireless devices to obtain a channel occupancy threshold and quality criterion, determining channel occupancy measurements based on received signal strength indication (RSSI) samples, and performs tasks such as reporting or adjusting measurements to ensure accuracy, using numerical weights for samples meeting or not meeting the quality criterion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If channel occupancy measurement is performed without quality criteria, then measurement process is simple, but measurement accuracy is uncertain
Solution Approach 1:
The patent applies parameter changes by introducing quality criterion parameters (such as signal strength thresholds, signal-to-interference ratios) that define minimum quality levels for RSSI samples. These parameters enable the system to filter and weight measurements based on quality, thereby improving measurement accuracy without fundamentally changing the measurement process architecture.
Solution Approach 2:
The patent replaces simple counting-based channel occupancy measurement with a weighted measurement system that substitutes mechanical simplicity with computational processing. Instead of merely counting samples above a threshold, the system uses quality-based weighting factors and statistical processing to achieve higher accuracy through information processing rather than mechanical measurement simplification.
2Reliability
If all RSSI samples are used for channel occupancy measurement, then measurement process is simple, but measurement reliability is reduced due to low quality samples
Solution Approach 1:
The patent applies local quality by assigning different quality weights to different RSSI samples based on their individual characteristics. Instead of treating all samples uniformly, the system evaluates each sample's quality locally using criteria such as signal strength, interference levels, and detection conditions, then applies appropriate weighting factors to reliable samples while reducing or eliminating the influence of low-quality samples.
Solution Approach 2:
The patent implements feedback by using quality criterion evaluations to determine which samples contribute to the final channel occupancy measurement. The system continuously assesses sample quality against defined criteria and adjusts the measurement calculation based on this feedback, ensuring that only samples meeting quality thresholds significantly influence the results.
3Adaptability or versatility
If channel occupancy threshold is fixed, then configuration is simple, but adaptability to varying operating conditions is reduced
Solution Approach 1:
The patent applies dynamics by making the channel occupancy threshold adaptive rather than fixed. The threshold is configured to vary based on operating conditions such as carrier frequency, bandwidth, and detected interference levels. This dynamic configuration allows the measurement system to automatically adapt to different spectral environments and coexistence scenarios with Wi-Fi and other unlicensed band users.
Solution Approach 2:
The patent uses parameter changes by configuring the channel occupancy threshold as a variable parameter that can be adjusted based on operational context. Different threshold values are applied for different carrier frequencies, bandwidth configurations, and interference conditions, allowing the system to optimize measurement accuracy across diverse operating scenarios without requiring complex real-time recalculation.
Data Source
AI summary
Methods and devices for controlling channel occupancy measurement quality are disclosed. A wireless device is configured for carrier aggregation under operation with frame structure type 3. The wireless device is configured to obtain a channel occupancy threshold, obtain a set of received signal strength indication, RSSI, samples on a carrier frequency and obtain a quality criterion for a channel occupancy measurement. The quality criterion defines a quality of an RSSI sample based on whether a value of the RSSI sample is within a range of a value of the channel occupancy threshold. The wireless device is further configured to determine the channel occupancy measurement for the carrier frequency based on the obtained channel occupancy threshold, the quality criterion and at least one RSSI sample of the set of RSSI samples, and perform at least one task based on the channel occupancy measurement.