Sidelink Multi-RTT Positioning With gNB-Coordinated Anchor Selection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in efficiently performing multi-round trip time (RTT) positioning using sidelink (SL) due to the need for individual uncoordinated RTT measurements to each anchor UE, which is time-consuming and inefficient in resource allocation, especially when serving gNBs are involved.
Innovation Solution
A method is proposed to enable single-sided or double-sided multi-RTT-based positioning by coordinating with gNBs, involving an initiator node that identifies and selects anchor UEs and gNBs for multi-RTT, allocates resources, and terminates the procedure if necessary, allowing for flexible node selection and efficient resource management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If individual uncoordinated RTT measurements are performed to each anchor UE, then positioning measurements can be obtained, but resource allocation becomes inefficient and time-consuming
Solution Approach 1:
The patent combines multiple individual RTT measurement procedures into a single coordinated multi-RTT measurement procedure. The serving gNB coordinates measurements across multiple anchor UEs simultaneously, merging separate measurement operations into one unified process that improves resource allocation efficiency while maintaining positioning accuracy.
Solution Approach 2:
The serving gNB acts as an intermediary that coordinates the RTT measurements between the target UE and multiple anchor UEs. It manages the measurement timing, resource allocation, and data collection, thereby improving overall system efficiency without compromising the measurement precision required for accurate positioning.
2Measurement precision
If multiple anchor UEs are involved in multi-RTT positioning, then positioning accuracy is improved, but system complexity increases
Solution Approach 1:
The serving gNB serves as a central intermediary that manages the complexity of coordinating multiple anchor UEs. It handles the intricate tasks of timing synchronization, resource allocation, and measurement data collection, thereby enabling high positioning accuracy through multiple anchors while keeping the system manageable through centralized coordination.
Solution Approach 2:
The serving gNB performs multiple functions simultaneously: it acts as a coordination node for RTT measurements, manages resource allocation across multiple anchor UEs, collects measurement data, and processes positioning information. This multi-functionality reduces overall system complexity by consolidating various tasks into a single node.
3Productivity
If serving gNB is involved in coordinating multi-RTT measurements, then resource allocation efficiency is improved, but signaling overhead increases
Solution Approach 1:
The patent merges multiple signaling operations into consolidated messaging between the serving gNB and anchor UEs. By combining resource allocation commands, measurement coordination signals, and data collection requests into unified signaling procedures, the system improves resource allocation efficiency while minimizing the total signaling overhead.
Data Source
AI summary
Methods for Sidelink-Aided multi-Round Trip Time Positioning (RTT) with at least one serving gNB involvement in a wireless communication system, characterized by, that single-sided or double-side multi-round trip time (RTT)-of wireless communication signals-based positioning involving the sidelink (SL) in the wireless communication system in coordination with at least one base-station (gNB) is proceeded by using an initiator node and the position of a target user equipment (UE) is computed.