Control Channel Time Mapping for Interference-Resilient Sensing
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Solution Overview
Problem
The integration of sensing and communication capabilities in 5G-Advanced networks faces challenges in improving sensing performance due to interference between network devices, necessitating enhanced methods to enhance sensing capabilities.
Innovation Solution
A control channel is modulated into multiple signal elements, mapped across time units, and transmitted through resource groups to reduce interference and improve sensing performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If control channels are transmitted using conventional single-symbol mapping, then resource utilization is efficient, but sensing performance deteriorates due to interference between network devices
Solution Approach 1:
The control channel signal is segmented into multiple signal elements (at least two) that are mapped to multiple time domain symbols across at least two time units. This segmentation distributes the signal transmission over time, reducing peak interference power and improving sensing performance by allowing better separation of overlapping signals from different network devices.
Solution Approach 2:
The patent extends the mapping from a single time symbol to multiple time symbols across multiple time units, adding a temporal dimension to the signal mapping. This dimensional expansion allows the same control information to be transmitted through multiple time instances, improving sensing capability while maintaining communication functionality.
2Reliability
If multiple signal elements are mapped to multiple symbols across multiple time units, then sensing performance improves, but resource overhead increases
Solution Approach 1:
The control channel signal elements serve dual purposes: they carry downlink control information for communication while simultaneously functioning as sensing signals. By mapping these same signal elements to multiple time symbols, the system achieves both communication reliability and sensing capability without requiring separate dedicated sensing resources, thus reducing overall resource overhead.
Data Source
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AI summary
A signal sending and receiving method and apparatus are provided. The signal sending method includes: determining a first signal and a first resource, where the first signal is used to carry downlink control information, the first signal includes N signal elements, the N signal elements correspond to a same signal, the first resource includes N resource groups, any one of the N resource groups includes M subcarriers on one time domain symbol, the N resource groups correspond to N time domain symbols, and the N time domain symbols correspond to at least two time units, where M is a positive integer, and N is a positive integer greater than or equal to 2; and sending the first signal on the first resource, where the N signal elements are in one-to-one correspondence with the N resource groups. According to the method, sensing performance in a device networking scenario can be improved.