Sidelink Positioning Verification for Wireless Terminals
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Solution Overview
Problem
Current positioning methods in wireless communication systems, such as 3GPP standards, face challenges in accurately determining the position of terminal devices, particularly in scenarios where direct device-to-device communication is necessary, like in vehicular or IoT applications, due to limitations in precision and accuracy of non-sidelink based positioning procedures.
Innovation Solution
Implementing a sidelink-based positioning procedure using sidelink positioning reference signals and interfaces like PC5, which enables direct terminal device-to-terminal device communication, allowing network devices to verify and refine the position information by initiating sidelink-based positioning procedures and evaluating results to enhance precision and plausibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If non-sidelink based positioning procedures are used, then the positioning can be performed using existing infrastructure, but the precision and accuracy of terminal device position determination deteriorates
Solution Approach 1:
The patent combines non-sidelink positioning procedures (network-based) with sidelink positioning procedures (device-to-device) into a hybrid positioning approach. The network device initiates both types of positioning procedures and uses their results together to determine terminal device positions, thereby improving accuracy while managing complexity through coordinated execution.
Solution Approach 2:
The network device acts as an intermediary that coordinates sidelink positioning procedures between terminal devices. It initiates the procedures, receives positioning results from devices, and integrates these with network-based positioning data, thereby enabling improved accuracy without requiring direct complex peer-to-peer coordination between devices.
2Reliability
If sidelink-based positioning procedures are initiated, then the precision and plausibility of position information is improved, but the communication overhead and procedure complexity increases
Solution Approach 1:
The network device performs preliminary actions by selecting suitable terminal devices for sidelink positioning procedures and initiating these procedures in advance. It prepares the positioning configuration and coordinates the timing, thereby reducing the complexity burden on individual devices while ensuring reliable position information is obtained when needed.
Solution Approach 2:
The network device initiates sidelink positioning procedures selectively for specific terminal devices rather than all devices simultaneously. This partial action approach improves position information reliability for critical devices while managing overall system complexity by limiting the scope of sidelink procedures to where they are most beneficial.
3Measurement precision
If direct device-to-device communication is implemented, then the positioning accuracy in vehicular and IoT applications is improved, but the system complexity and resource consumption increases
Solution Approach 1:
The system implements sidelink-based positioning partially, only for terminal devices where direct device-to-device communication provides significant accuracy benefits. The network device selectively initiates procedures for specific device pairs, thereby improving positioning accuracy for vehicular and IoT applications while avoiding unnecessary energy consumption for devices where sidelink positioning is not critical.
Data Source
AI summary
A method, for example a computer-implemented method, for determining a position of a terminal device. The method includes: determining, by a network device, a position of a first terminal device, determining, by the network device, a position of a second terminal device, and initiating, by the network device, at least one sidelink-based positioning procedure associated with at least one of the first terminal device and the second terminal device.