Communication-Sensing Detection Using Uplink Channel Feedback
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Solution Overview
Problem
Existing communication and sensing detection technologies face challenges due to multipath interference, leading to false targets and hindering the development and adoption of integrated communication and radar systems.
Innovation Solution
A method and apparatus that subdivides operation cycles into uplink and downlink phases for channel estimation, utilizing uplink channel estimation results to process echo signals and eliminate multipath interference by incorporating estimated propagation channel information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If radar clutter processing schemes and false target elimination schemes are used, then detection capability is improved, but inherent radar multipath interference from environmental targets cannot be effectively eliminated
Solution Approach 1:
The patent segments the operation cycle into distinct uplink and downlink phases, allowing separate channel estimation for each direction. This segmentation enables the system to obtain independent channel state information for uplink and downlink, which is then used to process echo signals and eliminate multipath interference through coordinated processing of signals from both phases.
Solution Approach 2:
The patent implements a feedback mechanism where the uplink channel estimation result is used to guide the processing of downlink echo signals. By feeding back the channel information obtained in the uplink phase to the downlink signal processing, the system can compensate for multipath effects and improve detection accuracy through iterative refinement of channel state information.
2Device complexity
If channel estimation is performed without subdividing operation cycles, then system complexity is reduced, but accuracy of communication and sensing detection results deteriorates due to multipath interference
Solution Approach 1:
The patent divides each operation cycle into uplink and downlink phases, enabling separate channel estimation for each transmission direction. This segmentation allows the system to obtain direction-specific channel state information, which is crucial for accurately processing echo signals and eliminating multipath interference, thereby improving detection accuracy without excessive complexity increase.
Solution Approach 2:
The patent performs uplink channel estimation in advance during the uplink phase, before processing the downlink echo signals. This preliminary acquisition of channel state information enables the system to pre-compensate for multipath effects when processing downlink signals, improving detection accuracy while maintaining efficient system operation.
Data Source
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Figure 2b~2c
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AI summary
Embodiments of the present disclosure relate to the field of communications, and provide a method and apparatus for determining a communication and sensing detection result, a communication device, and a storage medium. The method comprises: determining, within at least one operation cycle, an uplink channel estimation result in an uplink stage and a communication and sensing frequency domain sending signal and a communication and sensing frequency domain receiving signal in a downlink stage; and on the basis of the uplink channel estimation result, the communication and sensing frequency domain sending signal and the communication and sensing frequency domain receiving signal within the at least one operation cycle, determining a communication and sensing detection result, wherein one operation cycle comprises the uplink stage and the downlink stage, the communication and sensing frequency domain receiving signal is determined by demodulating an echo signal, the echo signal is a signal obtained after an integration signal sent by a network device in the downlink stage is reflected by a terminal, and the integration signal is determined by modulating the communication and sensing frequency domain sending signal. According to the embodiments of the present disclosure, the inherent radar multipath interference of a terminal can be effectively eliminated.