Ranging Signal Transmission Parameter Indication in NR Sidelink
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Solution Overview
Problem
Current NR sidelink communication systems do not account for ranging requirements, leading to increased processing complexity and energy consumption for terminals attempting to estimate relative positions or distances through blind detection of ranging signals.
Innovation Solution
The method involves determining and indicating transmission parameters for ranging signals, including time-frequency resources and physical layer parameters, to facilitate explicit or implicit indication of signal transmission parameters, thereby reducing processing complexity and energy consumption by allowing terminals to prepare for signal reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If terminals use blind detection to estimate relative positions or distances in NR sidelink communication systems, then ranging functionality can be achieved, but processing complexity and energy consumption increase significantly
Solution Approach 1:
The patent applies preliminary action by having the transmitting terminal determine and indicate ranging signal transmission parameters (time-frequency resources, physical layer parameters) before the receiving terminal performs detection. This allows the receiving terminal to prepare for signal reception in advance rather than performing blind detection, thereby reducing processing complexity while maintaining measurement precision for relative position estimation
2Measurement precision
If terminals use blind detection for ranging signal detection, then distance measurement is possible, but energy consumption increases
Solution Approach 1:
The transmitting terminal performs preliminary action by determining and indicating the transmission parameters of ranging signals before transmission. The receiving terminal uses this indication information to know in advance when and where to detect the ranging signal, eliminating the need for continuous blind detection across all time-frequency resources. This significantly reduces energy consumption while maintaining distance measurement accuracy
3Ease of manufacture
If NR sidelink communication systems implement ranging signal transmission without parameter indication, then system simplicity is maintained, but terminal processing overhead increases
Solution Approach 1:
The patent introduces an intermediary mechanism (indication information) that carries ranging signal transmission parameters from the transmitting terminal to the receiving terminal. This intermediary allows the system to maintain relative simplicity while enabling the receiving terminal to process ranging signals efficiently by knowing the parameters in advance, thereby reducing processing time overhead
Data Source
AI summary
A method for sending a ranging signal performed by a first terminal includes determining first indication information for sending a first ranging signal. The first indication information is configured to indicate a transmission parameter of the first ranging signal, and the transmission parameter includes at least one of a time-frequency resource or a physical layer parameter for sending the first ranging signal. The method further includes sending the first ranging signal to a second terminal based on the transmission parameter.