Positioning Reference Signals With Implicit Side-Information Indication
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently conveying positioning-related information, particularly for low-power devices like RedCap UEs, leading to high power consumption and signaling overhead, especially in scenarios involving timing error group (TEG) reporting.
Innovation Solution
A mechanism is introduced where a device selects a reference signal sequence from a plurality of available sequences to implicitly convey side information, such as TEG IDs and margins, combining it with the reference signal transmission, reducing the need for additional time-frequency resources and separate signaling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If positioning-related information is conveyed using separate signaling and additional time-frequency resources, then positioning accuracy is maintained, but power consumption and signaling overhead increase
Solution Approach 1:
The patent combines the conveyance of positioning-related information (TEG IDs and margins) with the reference signal transmission by multiplexing them in the time-frequency domain. This merging eliminates separate signaling channels and additional resources, thereby reducing power consumption and signaling overhead while preserving positioning accuracy through the integrated signal structure.
Solution Approach 2:
The reference signal is designed to serve multiple functions simultaneously: it provides positioning reference information and implicitly conveys TEG IDs and margins through its structure. This multi-functionality eliminates the need for separate signaling messages, reducing overall system overhead and power consumption for low-power devices.
2Loss of information
If positioning-related information is conveyed using separate signaling, then information completeness is maintained, but signaling overhead increases
Solution Approach 1:
The patent merges the transmission of positioning-related information with the reference signal itself, eliminating separate signaling channels. The TEG IDs and margins are embedded within the reference signal structure through time-frequency multiplexing, ensuring information completeness while significantly reducing signaling overhead and system complexity.
Solution Approach 2:
The patent utilizes the time-frequency dimension to embed additional information within the reference signal structure. By multiplexing TEG IDs and margins across different time slots and frequency resources within the signal, the system achieves information completeness without requiring separate signaling channels, thereby reducing overhead.
3Adaptability or versatility
If multiple reference signal sequences are used to convey different information, then information conveyance capability is improved, but device complexity increases
Solution Approach 1:
The patent designs the reference signal system to be universal, where a single reference signal structure can convey multiple types of information (TEG IDs, margins, and positioning references) through time-frequency multiplexing. This multi-functionality improves information conveyance capability without requiring multiple distinct signal sequences, thereby avoiding increased device complexity.
Solution Approach 2:
The patent segments the reference signal into multiple time-frequency resources, where different segments carry different information (TEG IDs in one segment, margins in another). This segmentation allows the system to convey multiple types of information using a unified reference signal structure, improving versatility without increasing complexity.
Data Source
AI summary
Embodiments of the present disclosure relate to devices, methods, apparatuses and computer readable storage media for implicit indication of positioning related information. A first device selects a reference signal (RS) sequence from a plurality of available RS sequences. Based on the selected RS sequence, the first device generates a RS for positioning and then transmits the generated RS to a second device to indicate, with the selection of the reference signal sequence, at least part of side information related to the positioning.