Wireless Positioning Anchor Selection Without Extra Signaling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing positioning technologies face challenges in selecting the optimal set of network nodes to provide positioning services efficiently without additional signaling overhead, particularly in mobile and dynamic wireless communication environments, leading to suboptimal positioning accuracy.
Innovation Solution
A mechanism is introduced to determine an ideal or suitable activation sector for candidate anchors based on omni-directional channel gain measurements, using geometric transformations and criteria, allowing selection of network nodes that complement existing serving anchors without requiring additional signaling or assumptions about topology knowledge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple network nodes are activated as positioning anchors, then positioning accuracy is improved, but signaling overhead increases
Solution Approach 1:
The system performs preliminary evaluation of candidate anchors using stored channel gain measurements before activation. The UE evaluates candidates based on pre-measured channel gains and geometric criteria, selecting optimal anchors without requiring additional real-time signaling for each candidate evaluation.
Solution Approach 2:
The UE autonomously selects positioning anchors by evaluating candidate channel gains against geometric criteria without requiring network node assistance or additional signaling. The device self-determines the optimal anchor set based on stored measurements and internal processing.
2Measurement precision
If additional channel gain measurements are performed for anchor selection, then positioning accuracy is improved, but signaling overhead and measurement time increase
Solution Approach 1:
Channel gain measurements between UEs and candidate anchors are performed in advance and stored in the UE. These pre-acquired measurements are reused during anchor selection, eliminating the need for real-time measurements and reducing both time and signaling overhead.
Solution Approach 2:
The system prepares channel gain measurement data beforehand to cushion against future measurement requirements. By having measurements readily available in storage, the system avoids time-consuming real-time measurements when anchor selection is needed.
3Measurement precision
If network nodes are selected without geometric criteria, then device complexity is reduced, but positioning accuracy deteriorates
Solution Approach 1:
The system changes the selection parameter from simple signal strength to a geometric criterion based on channel gain relationships. The UE selects anchors where the channel gain to the target UE is greater than the gain between candidate anchors and serving anchors, creating a geometrically optimal configuration that improves positioning accuracy.
Data Source
AI summary
Disclosed is a method comprising receiving, from one or more network nodes, one or more first messages indicative of being able to provide a positioning service; selecting, based at least partly on the one or more first messages, a network node from the one or more network nodes; and transmitting, to the selected network node, a second message indicating to activate the positioning service.