GNSS Positioning Status Reporting for Synchronized Uplink Transmissions
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Solution Overview
Problem
In IoT-NTN environments, UEs face challenges in simultaneously performing cellular operations and GNSS positioning due to limited device capabilities, leading to potential resource waste and interference from unsynchronized uplink transmissions when GNSS information validity expires.
Innovation Solution
A wireless communication device sends a message to a wireless communication node indicating successful GNSS positioning, using configurations such as time windows, timers, or dedicated resources, to synchronize UL transmissions and avoid resource waste and interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If UE performs GNSS positioning operations, then positioning accuracy is improved, but uplink transmission synchronization deteriorates due to device capability limitations
Solution Approach 1:
The network configures the UE with specific time windows and timers before GNSS positioning operations begin. These preliminary configurations establish when the UE should perform positioning and when it should report results, preventing synchronization issues before they occur. The network sets up dedicated resources in advance for reporting, ensuring the UE can maintain synchronization while performing positioning tasks.
Solution Approach 2:
The UE sends feedback messages to the network indicating successful or unsuccessful GNSS positioning outcomes within configured time windows. This feedback mechanism allows the network to track the UE's positioning status and adjust scheduling decisions accordingly, maintaining uplink synchronization even when the UE is performing positioning operations. The network can identify when positioning fails and trigger appropriate recovery actions.
2Loss of information
If UE sends positioning report messages, then positioning information is transmitted, but resource waste increases due to unsynchronized uplink transmissions
Solution Approach 1:
The network configures periodic time windows and timers for the UE to send positioning report messages. Instead of allowing continuous or random reporting, the UE is restricted to sending reports only during specific periodic intervals. This ensures that uplink transmissions are synchronized with network expectations, eliminating wasted resources from unsynchronized transmissions while still ensuring positioning information is transmitted when needed.
3Productivity
If UE performs cellular operations and GNSS positioning simultaneously, then device utilization is improved, but interference increases due to limited device capabilities
Solution Approach 1:
The network segments the UE's operation into distinct time windows: cellular operation periods and GNSS positioning periods. By configuring specific time windows for positioning and restricting uplink transmissions to occur only during cellular operation periods, the system divides the UE's functionality into separate time slots. This segmentation allows the UE to perform both cellular operations and GNSS positioning without interference, as the operations occur at different times rather than simultaneously.
Data Source
AI summary
Presented are systems and methods for global navigation satellite system (GNSS) related information indication. A wireless communication device may send a message in response to successful performance of global navigation satellite system (GNSS) positioning to a wireless communication node according to a configuration. The configuration can be from the wireless communication node, and can be a configuration for sending one or more messages indicative of successful performance of GNSS positioning.