5G Positioning Timing Error Group Reporting for Accurate UE Location
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Solution Overview
Problem
Timing-based positioning methods in 5G NR technology face issues due to timing delays and errors between the baseband and antenna at the transmission/reception point (TRP) and the UE, leading to inaccurate measurement results.
Innovation Solution
The method involves identifying and reporting timing error groups (TEGs) for different positioning methods by determining UE and TRP Rx/Tx TEGs, and providing assistance data to mitigate timing errors through coordinated reporting of UE/TRP Rx/Tx TEG information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If positioning information is indicated using existing reference signals (CRS, CSI-RS, SS/BSS), then the system can maintain compatibility with existing standards, but the positioning accuracy and precision are insufficient for modern applications
Solution Approach 1:
The patent segments the positioning indication into separate components: a first indication portion carried by first reference signals (CRS/CSI-RS) for basic positioning, and a second indication portion carried by second reference signals (SS/BSS) for enhanced positioning. This segmentation allows the system to maintain compatibility with existing standards while incorporating improved positioning capabilities through optional second reference signals.
Solution Approach 2:
The patent implements multi-functionality by allowing reference signals to serve dual purposes: traditional downlink communication functions plus enhanced positioning functions. The first and second reference signals can be configured to carry both positioning information and communication reference signals, enabling the same physical layer structures to fulfill multiple roles including legacy compatibility and advanced positioning accuracy.
2Measurement precision
If the network configures multiple reference signals with different characteristics, then positioning precision can be improved, but the device complexity increases due to multiple configuration parameters
Solution Approach 1:
The patent applies preliminary action by pre-configuring the network to establish first and second reference signals with distinct characteristics before positioning operations begin. The network pre-determines which reference signals to use and configures their respective parameters in advance, allowing the user equipment to receive and process positioning information without complex real-time configuration decisions, thus reducing operational complexity while maintaining high precision.
3Measurement precision
If the patent applies channel state information (CSI) for positioning, then positioning accuracy improves, but the overhead increases due to additional signaling requirements
Solution Approach 1:
The patent merges positioning information with existing reference signal structures. The first and second reference signals are configured to carry both communication functions and positioning functions simultaneously. By combining positioning indication information with the existing reference signal transmissions, the system avoids adding separate dedicated positioning signals, thereby reducing overall signaling overhead while maintaining positioning accuracy through the use of channel state information.
Data Source
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AI summary
Systems and methods for indicating positioning information in wireless communication systems are disclosed. In one aspect, a method includes receiving, by a wireless communication device from a network, network timing error information; and reporting, by the wireless communication device to the network, downlink measurement results and User Equipment (UE) timing error information, wherein, the network timing error information comprises at least one of Transmission and Reception Point (TRP) transmission Timing Error Group (TEG) information and TRP reception TEG information; the UE timing error information comprises at least one of UE transmission TEG information and UE reception TEG information.