Sidelink Ranging Resource Multiplexing via FDM and TDM
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Solution Overview
Problem
In wireless communication systems, dynamic time-frequency resource allocation for ranging signals is challenging due to the need for transmitting physical layer control information alongside ranging reference signals, leading to potential interference and reduced transmission performance.
Innovation Solution
A resource multiplexing method for sidelink ranging that employs frequency-division multiplexing (FDM) or time-division multiplexing (TDM) to transmit sidelink ranging signals and physical sidelink channels within the same time unit, allowing for efficient use of time-frequency resources while minimizing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If dynamic time-frequency resource allocation is used for ranging signals, then resource flexibility is improved, but interference between ranging signals and control information increases
Solution Approach 1:
The time-frequency resource grid is segmented into distinct regions: one region for transmitting ranging reference signals and another region for transmitting physical layer control information. This segmentation allows both signals to coexist in the same time unit without interfering with each other, thus maintaining resource flexibility while eliminating interference.
Solution Approach 2:
The patent introduces an intermediary resource allocation mechanism that separates the resource assignment for ranging signals from control information. By using different time-frequency resources as intermediaries, the system achieves dynamic resource allocation while preventing direct interference between the two signal types.
2Reliability
If physical layer control information is transmitted alongside ranging reference signals, then transmission completeness is improved, but resource utilization efficiency deteriorates
Solution Approach 1:
The patent merges the transmission of ranging reference signals and physical layer control information into the same time unit, but assigns them to different time-frequency resource regions. This combining approach ensures both signals are transmitted together (improving completeness) while using resources efficiently (maintaining productivity).
Solution Approach 2:
The patent transitions from one-dimensional resource allocation (either time or frequency only) to two-dimensional time-frequency resource allocation. By utilizing both time and frequency dimensions simultaneously, the system can transmit both ranging signals and control information within the same time unit without conflicting, thus improving transmission completeness while maintaining resource efficiency.
3Productivity
If ranging signals and control information share the same time-frequency resources, then resource efficiency is improved, but measurement precision deteriorates
Solution Approach 1:
The time-frequency resource grid is segmented into distinct non-overlapping regions for ranging signals and control information. This segmentation ensures that ranging reference signals maintain their required precision for distance and angle measurements while still achieving high resource efficiency through dynamic allocation within the segmented framework.
Data Source
AI summary
A resource multiplexing method for sidelink ranging performed by a transmitting terminal includes performing a first sidelink transmission of a sidelink ranging signal and a physical sidelink channel through at least one of a frequency-division multiplexing or a time-division multiplexing within a same time unit. The sidelink ranging signal is a reference signal for measuring at least one of a distance or an angle; and the physical sidelink channel includes at least one of: a first physical sidelink channel for transmitting first sidelink control information; or a second physical sidelink channel for transmitting at least one of second sidelink control information or sidelink data. The first and second sidelink control information are related to at least one of a transmission of the sidelink data or the sidelink ranging signal; and at least one of the first physical sidelink channel, the second physical sidelink channel or a sidelink ranging signal transmission are associated with each other.