Collinearity-Based Transmission Point Selection for Positioning
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Solution Overview
Problem
Current communication systems face inefficiencies in positioning accuracy due to the need for UEs to measure and report on multiple transmission points, leading to high computational and battery resource consumption, especially at higher carrier frequencies.
Innovation Solution
Implementing device-to-device (D2D) communication for UEs to transmit and receive GDOP assistance packets, allowing them to select a subset of relevant transmission points based on collinearity and signal quality, reducing the burden on UEs and network resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If UEs measure and report on multiple transmission points, then positioning accuracy is improved, but computational resource consumption and battery power consumption increase
Solution Approach 1:
The network pre-calculates and provides GDOP values for multiple transmission points before the UE needs to perform measurements. This allows the UE to select which transmission points to measure based on pre-provided quality indicators, avoiding the need to measure all transmission points and thereby reducing computational load and power consumption while maintaining positioning accuracy.
2Measurement precision
If UEs measure and report on multiple transmission points, then positioning accuracy is improved, but computational cost increases
Solution Approach 1:
The network pre-calculates GDOP (Geometric Dilution of Precision) values for multiple transmission points and provides them to the UE as assistance data. This preliminary computation by the network enables the UE to selectively measure only the most relevant transmission points based on pre-provided quality indicators, significantly reducing the UE's computational burden while maintaining positioning accuracy.
3Quantity of substance
If UEs use device-to-device communication to share GDOP assistance packets, then signaling overhead is reduced, but measurement requests and computational costs for UEs are reduced
Solution Approach 1:
The patent introduces an intermediary mechanism where one UE acts as a relay to share GDOP assistance packets with other UEs via device-to-device communication. This intermediary approach reduces the total signaling overhead between UEs and the network while still providing the necessary assistance data to multiple UEs, thereby improving overall positioning efficiency without significantly increasing computational costs for individual UEs.
Data Source
AI summary
There is provided an apparatus, method for an apparatus, and computer program product for an apparatus for a first terminal that causes the apparatus to: receive, from a second terminal, an indication of a degree of collinearity of at least two transmission points relative to a location of the second terminal; select a subset of the at least two transmission points using the indication of a degree of collinearity; and perform a location operation using the selected subset of the at least two transmission points.