Wireless Sensing Resource Allocation Against Frequency-Selective Fading
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Solution Overview
Problem
Existing wireless communication systems face challenges in converging sensing technologies with communication to sense ambient environments while minimizing interference caused by frequency-selective fading.
Innovation Solution
A wireless communication method and apparatus that determines frequency domain resources with P-level redundancy distribution to mitigate interference from frequency-selective fading by ensuring redundancy in frequency baselines, using parameters like frequency response amplitude difference and sensing requirement parameters to optimize resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If frequency domain resources are allocated for sensing signals, then sensing capability is improved, but frequency-selective fading interference increases
Solution Approach 1:
The patent applies parameter changes by modifying the frequency domain resource allocation parameters to achieve P-level redundancy distribution. This involves changing the frequency baseline configuration and redundancy level parameters to optimize both sensing capability and interference resistance. The system dynamically adjusts frequency resource parameters based on channel conditions to maintain sensing performance while mitigating frequency-selective fading effects.
Solution Approach 2:
The patent implements beforehand cushioning through P-level redundancy distribution in frequency domain resources. By pre-configuring multiple redundant frequency baselines before sensing operations, the system ensures that if some frequency resources experience severe fading, alternative redundant resources are already in place to maintain sensing capability. This proactive approach cushions against the harmful effects of frequency-selective fading.
2Reliability
If redundancy distribution is increased to resist interference, then reliability is improved, but frequency domain resource consumption increases
Solution Approach 1:
The patent applies partial or excessive action by implementing P-level redundancy distribution where P is optimized based on channel conditions. Rather than using full redundancy for all scenarios, the system applies the appropriate level of redundancy (partial action) matched to the actual interference environment. This prevents excessive resource consumption while maintaining sufficient reliability for the given conditions.
Solution Approach 2:
The patent implements dynamics by making the redundancy level P adaptive rather than fixed. The system dynamically adjusts the redundancy distribution based on channel conditions, interference levels, and sensing requirements. This dynamic approach allows the system to optimize the balance between reliability and resource consumption in real-time, using more redundancy only when necessary.
Data Source
AI summary
This application discloses a method includes: determining a first frequency domain resource, where frequency baselines formed by the first frequency domain resource meet a P-level redundancy distribution. Sending a sensing signal on the first frequency domain resource. The P-level redundancy distribution meets a first condition and a second condition. The first condition includes: The frequency baselines formed by the first frequency domain resource include a frequency baseline of a first length; and the first length is k*length of a minimum frequency baseline, k is a positive integer belonging to [1, K], K is a ratio of a length of a maximum frequency baseline to the length of the minimum frequency baseline. The second condition includes: In the frequency baselines formed by the first frequency domain resource except largest (P−1) and smallest (P−1) frequency baselines, a quantity of redundancy distribution times is greater than or equal to P.