Positioning Assistance Data Persistence for Selective UE Updates
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The delivery of positioning assistance data in wireless networks is costly and inefficient due to redundancy and lack of consideration for the UE's existing data, leading to unnecessary consumption of network resources.
Innovation Solution
A method for UEs to determine the persistence of assistance data using indicators, allowing selective request of updated data only when necessary, and a mechanism for positioning nodes to provide data in parts via unicast and broadcast, enabling efficient distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If positioning assistance data is delivered via unicast to all UEs, then positioning accuracy is improved, but network resource consumption increases due to redundancy
Solution Approach 1:
The assistance data is segmented into two distinct parts: a first part delivered via unicast for specific UE positioning needs, and a second part delivered via broadcast for general information. This segmentation allows UEs to receive only the necessary unicast data while sharing common broadcast data, reducing redundant network resource consumption while maintaining positioning accuracy.
Solution Approach 2:
The broadcast mechanism serves multiple UEs simultaneously with common positioning assistance information, making the system more universal. This allows one transmission to benefit multiple UEs, reducing overall network resource consumption compared to individual unicast transmissions to each UE.
2Measurement precision
If positioning assistance data is delivered frequently to ensure updates, then positioning accuracy is improved, but network resource consumption increases
Solution Approach 1:
The system dynamically determines whether to deliver assistance data via unicast or broadcast based on UE state and data persistence indicators. UEs in idle state receive data via broadcast, while connected UEs receive via unicast. This dynamic approach optimizes network resource usage while ensuring timely updates when necessary.
Solution Approach 2:
The network node receives indication information from UEs about their state and needs, then adjusts the delivery mechanism accordingly. This feedback loop ensures data is delivered efficiently - using broadcast when UEs are idle and unicast when connected - maintaining positioning accuracy while minimizing network resource consumption.
3Measurement precision
If the UE requests updated assistance data frequently, then positioning accuracy is improved, but network resource consumption increases due to redundant requests
Solution Approach 1:
The network node proactively provides persistence indicators to UEs, allowing them to determine in advance whether their stored assistance data is still valid. This preliminary information enables UEs to avoid unnecessary update requests, reducing redundant network communication while ensuring updates occur when actually needed for maintaining positioning accuracy.
4Productivity
If assistance data is provided in parts via unicast and broadcast, then network efficiency is improved, but system complexity increases
Solution Approach 1:
The assistance data is divided into a first part (unicast) and a second part (broadcast), with clear definitions of what each contains. This segmentation improves network efficiency by reducing redundancy while the complexity is managed through standardized protocols and clear data structure definitions that guide UE implementation.
Data Source
AI summary
Embodiments include methods for a user equipment (UE) to obtain positioning assistance data associated with a cell of a wireless network. Such methods include receiving a first part of the positioning assistance data associated with the cell from a positioning node via unicast in the cell, and receiving a second part of the positioning assistance data associated with the cell via system information (SI) broadcast in the cell. Such methods also include, based on the second part, determining a persistence indicator associated with the first part, and based on the persistence indicator, selectively requesting an updated first part associated with the cell from a network node of the wireless network. Other embodiments include complementary methods for a positioning node as well as UEs and positioning nodes configured to perform such methods.