Communication Apparatus Delay Profile Signal Detection
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Solution Overview
Problem
Conventional communication systems consume more power than necessary during directivity angle searches, as they operate regardless of whether radio waves have arrived, leading to inefficient power usage.
Innovation Solution
A communication apparatus and method that acquire a delay profile for a first transmit signal and determine an end time for detection based on the profile, controlling the search period using a reception time threshold, allowing the system to only receive signals with a beam peak at a predetermined angle, thereby reducing unnecessary power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the receiver operates continuously during directivity angle search to detect all possible signals, then detection reliability is improved, but power consumption increases
Solution Approach 1:
The receiver performs preliminary acquisition of delay profile information before the main detection phase. This preliminary action allows the system to identify expected signal arrival times and durations in advance, enabling the receiver to enter low-power states during periods when no signals are expected to arrive, thus reducing overall power consumption while maintaining detection reliability.
Solution Approach 2:
The receiver operates in periodic cycles: active during signal transmission periods identified from delay profiles, and in low-power mode during idle periods. This periodic operation pattern matches the actual signal transmission schedule, ensuring reliable detection when signals are present while minimizing power consumption during idle times.
2Reliability
If the receiver scans all antenna directivity characteristics to ensure complete coverage, then detection completeness is improved, but search time increases
Solution Approach 1:
Delay profile information is acquired in advance before the directivity angle search. This preliminary information contains characteristics about signal arrival times and paths, allowing the receiver to predict which antenna directivity characteristics are likely to yield useful signals, thereby reducing the number of scans needed while maintaining detection completeness.
Solution Approach 2:
The receiver uses delay profile parameters to dynamically adjust its search strategy, changing operational parameters such as which antenna directivity characteristics to scan and when to perform scans. This adaptive parameter adjustment based on pre-acquired delay information optimizes the balance between detection completeness and search time.
Data Source
AI summary
A communication apparatus acquires a delay profile for a first transmit signal from a transmitting apparatus and determines an end time at which to end detection of a second transmit signal from the transmitting apparatus, based on the delay profile.