User Equipment Dual Role Positioning Accuracy Latency
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Solution Overview
Problem
Current wireless communication systems face challenges in accurately determining the location of user equipment (UE) due to limitations in positioning methods, particularly in reducing latency and compensating for timing and group errors in reference signal measurements.
Innovation Solution
A method where user equipment (UE) is registered as both a reference location device (RLD) and a location-target device, allowing it to provide reference signal measurements while simultaneously determining its own location, using assistance data to compensate for timing and group errors, thereby enhancing positioning accuracy and reducing latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a mobile device is configured as a reference location device to enhance positioning accuracy, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The user equipment is configured to perform both regular communication functions and reference location device functions simultaneously. The same UE can act as a location-target device for its own positioning and as a reference location device for assisting other UEs, eliminating the need for separate dedicated reference devices and reducing overall system complexity while maintaining high positioning accuracy
Solution Approach 2:
The patent combines the reference location device functionality with regular user equipment by integrating the same hardware and software resources for both purposes. The UE uses its existing receivers, processors, and antennas to perform reference signal measurements and reporting, merging multiple functions into a single device rather than requiring separate specialized equipment
2Productivity
If a user equipment operates simultaneously as reference location device and location-target device, then productivity is improved, but device complexity increases
Solution Approach 1:
The system dynamically manages the dual roles of user equipment by implementing role-specific configurations and assistance data provision. The network can flexibly assign and reassign reference location device and location-target device roles to different UEs based on current positioning needs, allowing the system to adapt to varying productivity requirements while managing device complexity through dynamic rather than static assignments
Solution Approach 2:
The patent segments positioning sessions into distinct reference location sessions and location-target sessions, each with dedicated assistance data and measurement procedures. This segmentation allows the UE to handle different positioning tasks separately and efficiently, improving overall productivity by organizing complex dual-role operations into manageable, independent session segments
3Measurement precision
If assistance data is provided for multiple simultaneous positioning sessions, then measurement precision is improved, but loss of information increases
Solution Approach 1:
The system optimizes assistance data transmission by changing parameters such as providing only essential assistance data for each positioning session, using compact data formats, and selectively transmitting assistance data based on the specific requirements of reference location sessions versus location-target sessions. This reduces the overall information overhead while maintaining the precision needed for accurate reference signal measurements
Data Source
AI summary
Techniques are provided for utilizing a user equipment (UE) which is registered as a reference location device (RLD) and a location-target device. An example method of obtaining and reporting reference signal measurements includes providing an indication of a capability to operate as a reference location device and a location-target device, receiving assistance data associated with at least two positioning sessions occurring simultaneously, wherein a first positioning session is associated with the capability to operate as the reference location device and a second positioning session associated with the capability to operate as the location-target device, obtaining one or more reference signal measurements based at least in part on the assistance data, and reporting the one or more of the reference signal measurements to a positioning entity.