Uplink SRS-TEG Association for Accurate 5G NR Positioning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in accurately reporting uplink timing measurements due to timing errors and delays, particularly in 5G NR systems, which affect the precision of positioning methods like UL-TDOA and multi-RTT, as there is no standardized procedure for reporting UL SRS resources associated with UE Tx TEGs.
Innovation Solution
The system introduces mechanisms for reporting the association relationship between SRS resources and UE Tx TEGs, using bitmaps or specific reporting configurations, to mitigate timing errors and enhance measurement accuracy in positioning methods by explicitly reporting SRS resource IDs, UE Tx TEG IDs, and other relevant information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If timing-based positioning methods (UL-TDOA, multi-RTT) are implemented in 5G NR systems, then positioning capability is enhanced, but timing errors and delays in uplink measurements degrade measurement precision
Solution Approach 1:
The patent introduces SRS resources as intermediary signals between the UE and network for timing measurements. By using dedicated SRS resources with known transmission timing and associating them with specific UE Tx TEGs, the system creates a reliable reference mechanism that mediates the timing measurement process, thereby improving measurement precision while maintaining positioning capability
Solution Approach 2:
The patent changes the parameter representation by introducing TEG IDs to group timing error characteristics and using bitmap indicators to represent associations between SRS resources and TEGs. This parameter transformation allows the system to efficiently convey timing relationship information, improving measurement precision without compromising positioning functionality
2Measurement precision
If association relationship between SRS resources and UE Tx TEGs is reported using bitmaps, then measurement accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent applies partial action by using bitmaps only when necessary (e.g., when multiple SRS resources need to be associated with multiple TEGs). In simpler scenarios, the system can use direct indication methods, thereby reducing signaling overhead while maintaining measurement accuracy when needed
3Measurement precision
If multiple SRS resources are configured for positioning measurements, then positioning accuracy is enhanced, but device complexity increases
Solution Approach 1:
The patent segments the positioning measurement process by dividing it into multiple SRS resources, each associated with specific TEGs through bitmap indicators. This segmentation allows the UE to handle measurements in organized groups rather than as a monolithic complex task, reducing device complexity while maintaining enhanced positioning accuracy through multiple measurement opportunities
Data Source
AI summary
Systems and methods for wireless communication systems are disclosed. In one aspect, the wireless communication method includes receiving, by a wireless communication device from a network, a positioning request. The positioning request includes a request for at least one of performing an UL-TDOA positioning method, performing multi-RTT positioning method, performing DL-TDOA positioning method, performing DL-AoD positioning method, performing UL-AoA positioning method, or reporting measurement information. The method includes reporting, by the wireless communication device to the network, the measurement information, wherein the measurement information comprises at least one of UL-TDOA measurement result, multi-RTT measurement result, DL-TDOA measurement result, DL-AoD measurement result, UL-AoA measurement result, SRS resource ID, SRS resource set ID, UE Tx TEG ID, association relationship between SRS signaling and UE Tx TEGs, or ARP information of SRS signaling. The SRS signaling comprises at least one of the following: SRS resources, or SRS resource sets.