Sidelink Positioning Assistance Information for UE Location Acquisition
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Solution Overview
Problem
Current wireless communication technologies lack detailed positioning architecture and signaling procedures for sidelink (SL) positioning, particularly in scenarios where UEs are both in coverage, partially covered, or out of coverage.
Innovation Solution
The proposed method involves a first UE transmitting assistance information to a network, which includes UE information associated with secondary UEs that can help the first UE acquire its position. The network then provides SL positioning-related information to the first UE, which can include mappings between SL positioning configurations and corresponding UEs or capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If SL positioning is implemented without detailed architecture and signaling procedures, then positioning functionality can be provided in a simplified manner, but positioning reliability and accuracy deteriorate in various coverage scenarios
Solution Approach 1:
The positioning architecture is segmented into multiple coverage scenarios (both in coverage, partial coverage, both out of coverage) with specific procedures for each. This segmentation allows the system to provide reliable positioning for each scenario while maintaining overall implementation feasibility through modular design.
Solution Approach 2:
The patent defines positioning procedures and configurations in advance for different coverage scenarios. By establishing the architecture and signaling procedures beforehand, the system ensures positioning reliability is achieved without requiring complex real-time decisions, thus maintaining implementation simplicity.
2Measurement precision
If assistance information including secondary UE details is transmitted to the network, then positioning accuracy improves, but signaling overhead and network load increase
Solution Approach 1:
The patent extracts only the necessary secondary UE information (identifiers, capabilities, serving cell) required for positioning into the assistance information. This selective extraction provides sufficient positioning accuracy while minimizing the amount of data transmitted, thus reducing signaling overhead.
Solution Approach 2:
The assistance information structure is designed to be universal, accommodating different types of UE information in a standardized format. This multi-functional design allows the same signaling mechanism to handle various positioning scenarios without requiring separate specialized procedures, reducing overall signaling complexity.
3Reliability
If multiple secondary UEs are selected for positioning, then positioning robustness improves, but device complexity and configuration management increase
Solution Approach 1:
The patent enables dynamic selection and configuration of secondary UEs based on current positioning requirements and network conditions. The first UE can determine which secondary UEs to use, and the network can provide scenario-specific configurations. This dynamic approach ensures robust positioning through multiple UEs while avoiding static complexity through adaptive management.
Solution Approach 2:
The network acts as an intermediary that receives assistance information from the first UE, processes the secondary UE selections, and returns appropriate positioning configurations. This intermediary role simplifies the complexity by centralizing the management of multiple secondary UEs, allowing the first UE to benefit from robust multi-UE positioning without directly managing the complexity of coordinating multiple devices.
Data Source
AI summary
Embodiments of the present disclosure relate to methods and apparatuses for sidelink (SL) positioning. According to an embodiment of the present disclosure, a first user equipment (UE) can include: a transmitter configured to transmit first assistance information to a network, wherein the first assistance information includes UE information associated with at least one second UE, and wherein the at least one second UE helps the first UE to acquire its position; a receiver configured to receive first SL positioning related information from the network; and a processor coupled to the transmitter and the receiver.