Sensing Signal CP Length Control for Extended OFDM Range
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Solution Overview
Problem
The cyclic prefix (CP) length in time cannot meet the needs of sensing services when sensing signals are transmitted based on current OFDM symbols, limiting the maximum distance difference between sensed objects and the transmission device to less than 703 meters.
Innovation Solution
The method involves determining a CP length and data length for sensing signals using resource indication information, which includes adjusting CP lengths and data lengths based on subcarrier spacing (SCS) configurations, allowing for extended CP lengths to reduce inter-symbol interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the sensing signal is transmitted based on current OFDM symbols with standard CP lengths, then the system maintains compatibility with existing communication standards, but the maximum distance difference between sensed objects is limited to less than 703 meters
Solution Approach 1:
The patent changes the CP length parameter from standard values to extended values. Specifically, it uses a first CP length for part of the sensing signal and a second CP length (longer than the first) for another part, allowing the system to accommodate larger distance differences between sensed objects while maintaining orthogonality and reducing interference
Solution Approach 2:
The sensing signal is segmented into multiple parts, each with different CP lengths. The resource indication information indicates different CP lengths for different portions of the sensing signal, allowing flexible adaptation to varying sensing range requirements while maintaining system reliability
Data Source
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AI summary
The present disclosure relates to the technical field of communications, and provides an information processing method and device, a user equipment, and a network device. The method includes: receiving, by UE, a first message transmitted by a network device; wherein the first message carries a first SCS and/or resource indication information of a sensing signal; determining, by the UE, a CP length in time and/or data length for transmitting the sensing signal according to the first SCS and/or the resource indication information.