Wireless Device Positioning Measurement Retrieval
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Solution Overview
Problem
Current wireless communication systems face challenges in retrieving measurements and performing positioning actions from wireless devices operating in WD-based mode, particularly in RRC Idle or Inactive states, due to limited information availability and the lack of direct logging mechanisms.
Innovation Solution
Implementing a signaling mechanism between the location server and wireless devices to retrieve measurements and positioning estimates, and configuring WDs to perform minimization of drive test (MDT) logging, enabling the collection of positioning measurements and statistics even in RRC Idle or Inactive states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If wireless devices operate in WD-based mode in RRC Idle or Inactive states, then positioning autonomy and battery efficiency are improved, but measurement retrieval and positioning accuracy deteriorate due to limited information availability and lack of direct logging mechanisms
Solution Approach 1:
The network configures WDs to perform MDT logging in advance, storing positioning measurements and statistics in the device before they are needed. This preliminary action ensures that measurement data is already available when the WD transitions to Idle or Inactive states, eliminating the need for continuous network connection while maintaining measurement availability for later retrieval.
2Extent of automation
If wireless devices operate in WD-based mode in RRC Idle or Inactive states, then positioning autonomy is improved, but positioning accuracy deteriorates due to limited information availability
Solution Approach 1:
The patent introduces MDT logging as an intermediary mechanism that bridges the gap between WD-based autonomous operation and network-required measurement accuracy. The WD autonomously performs measurements and stores them locally via MDT logging, then retrieves them upon network request, thereby maintaining both positioning autonomy and measurement precision without requiring continuous network connection.
3Speed
If wireless devices perform measurements and calculate own position estimate without network assistance, then positioning speed and device autonomy are improved, but network control and measurement retrieval capability deteriorate
Solution Approach 1:
The patent implements a feedback mechanism where the network requests specific measurements from WDs via LPP messages, and WDs respond with the requested measurement data. This feedback loop ensures that while WDs maintain autonomous positioning capability for speed, the network retains control over which measurements are retrieved and how they are used for network optimization and positioning accuracy validation.
Data Source
AI summary
A method, system and apparatus are disclosed providing arrangements to retrieve measurements from a wireless device (WD) operating in a WD-based mode. In one embodiment, a method implemented in a network node includes identifying a wireless device, WD, operating in a WD-based positioning mode; and receiving at least one positioning measurement and a positioning estimate from the identified WD; and optionally, using the received at least one positioning measurement to perform at least one positioning action. In one embodiment, a method implemented in a WD includes operating in a WD-based positioning mode; while operating the WD-based positioning mode, receiving a request to report at least one positioning measurement; and reporting the requested at least one positioning measurement and a positioning estimate.