Channel Inspection Method for Wireless Communication Audio Quality
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Solution Overview
Problem
Current channel inspection methods in wireless communication systems, such as TDMA systems, result in audio holes due to full and partial inspections across channels of different priority levels, degrading audio quality by causing multiple gaps in the signal.
Innovation Solution
A method where a wireless communication device monitors a common announcement channel to determine if identified parameters match known parameters, performing a full inspection only when necessary and marking channels to prevent further inspections, thereby minimizing audio holes and maintaining audio quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If full channel inspection is performed on higher priority channel, then detection accuracy of RF activity is improved, but audio quality on lower priority channel deteriorates due to longer audio holes
Solution Approach 1:
The patent implements partial channel inspection by examining only specific parameters (such as identifier fields) rather than performing a complete inspection of all channel characteristics. This partial action approach allows the system to quickly determine whether further inspection is necessary, thereby reducing the duration of audio holes while maintaining adequate detection capability for identifying RF activity of interest.
2Loss of time
If channel marking is implemented to reduce inspection duration, then audio hole duration is reduced, but multiple partial inspections still cause multiple audio holes
Solution Approach 1:
The patent performs preliminary parameter matching against stored known parameters before initiating any channel inspection. By pre-comparing identifiers and other key parameters, the system can determine in advance whether a channel requires full inspection or can be quickly dismissed, thereby eliminating unnecessary partial inspections and their associated audio holes.
Solution Approach 2:
The patent extracts and compares only the most critical identifying parameters (such as channel identifiers) against stored known values, separating this preliminary identification step from the full inspection process. This extraction approach allows the system to filter out non-matching channels without performing complete inspections, thereby reducing the number of audio holes.
3Productivity
If parameter matching is performed before inspection, then unnecessary inspections are eliminated, but additional parameter comparison steps are required
Solution Approach 1:
The patent performs preliminary parameter matching by comparing identifiers and other key parameters against stored known values before initiating any channel inspection. This pre-comparison step eliminates unnecessary inspections by quickly identifying channels that do not match known patterns, thereby improving overall inspection efficiency without requiring complex additional hardware.
Data Source
AI summary
To perform a channel inspection, a wireless communication device: monitors a common announcement channel (CACH) until detecting that a first set of identified parameters associated with a signal on a first channel matches a second set of known parameters for the first channel; performs an inspection on the first channel to determine whether the signal is of interest; and when the signal is not of interest, marks the first channel to prevent another inspection from being performed on the first channel until after the channel mark is removed. The communication device then leaves the first channel and continues to monitor the CACH for a change in the first set of identified parameters or an indication of an idle first channel, wherein the communication device removes the channel mark on the first channel.