Integrated Sensing Signal Configuration for Low-Delay Interference Avoidance
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Solution Overview
Problem
Current communication-assisted sensing solutions suffer from large delays and poor interference avoidance due to independent resource allocation for radar and communication frames, leading to inferior sensing performance.
Innovation Solution
Integrate sensing and communication by transmitting configuration information of sensing signals with communication signals, allowing for finer granularity and flexible interference avoidance, reducing delays and improving sensing performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If time division multiplexing is used to separately transmit communication and sensing signals, then interference avoidance is achieved, but sensing delay increases and sensing performance deteriorates
Solution Approach 1:
The patent combines communication signals and sensing signals into a single transmitted signal by superimposing the sensing signal onto the communication signal. The transmitting device adds the sensing signal to the communication signal in the time domain or frequency domain, allowing both signals to share the same transmission resources simultaneously, thereby eliminating the need for time division multiplexing and reducing sensing delay while maintaining interference avoidance through signal separation at the receiving end
2Device complexity
If independent resource allocation is used for radar and communication frames, then frame structure simplicity is maintained, but sensing performance and interference avoidance capability deteriorate
Solution Approach 1:
The patent enables communication resources to serve dual purposes by making communication signals also function as sensing signals. The same time-frequency resources allocated for communication are simultaneously utilized for sensing, allowing the system to achieve refined and flexible interference avoidance while maintaining simple frame structure. The receiving device can separately process communication and sensing functions from the combined signal
3Device complexity
If only preamble is used for interference avoidance, then signal structure simplicity is maintained, but interference avoidance effectiveness is insufficient
Solution Approach 1:
The patent merges interference avoidance functionality into the main body of the communication signal rather than relying solely on the preamble. By superimposing the sensing signal onto the entire communication signal structure, the system achieves comprehensive interference avoidance throughout the signal transmission, not just at the preamble level, thereby improving effectiveness without significantly increasing structural complexity
Data Source
AI summary
This application relates to the field of communication technologies, and in particular, to a sensing method and an apparatus, to integrate sensing and communication, so as to reduce a sensing delay, support more refined and flexible interference avoidance, and improve sensing performance. The method includes: A first communication apparatus sends first information and a first sensing signal, where the first information includes configuration information of the first sensing signal; and the first communication apparatus receives a first measurement result, where the first measurement result is determined based on the first sensing signal, and the first measurement result is used for sensing.