Uplink Positioning TEG Mapping for Accurate 5G NR SRS Timing
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Solution Overview
Problem
In 5G NR technology, timing delays and errors between baseband and antenna at the transmission and reception points perturb measurement results in timing-based positioning methods, necessitating improved association of SRS transmission with transmitter TEG information and UE capability reporting to enhance measurement accuracy.
Innovation Solution
The method involves determining and communicating transmission TEG information based on SRS transmission, UE antenna coherent and switching capabilities, and SRS port usage to associate SRS resources with TEGs, enabling precise positioning by correcting timing errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If timing-based positioning methods are used in 5G NR, then positioning functionality is enabled, but timing delays and errors between baseband and antenna perturb measurement results, reducing measurement accuracy
Solution Approach 1:
The patent segments the timing error compensation by introducing separate Transmission TEG information for different SRS resources. Each SRS resource can be associated with specific TEG parameters, allowing independent timing error characterization and compensation for each resource, thereby improving overall positioning accuracy without compromising reliability
Solution Approach 2:
The patent changes the parameter representation by introducing TEG (Timing Error Group) information that characterizes timing delays and errors. By reporting and using TEG parameters associated with SRS resources, the system transforms raw timing measurements into corrected positioning data, resolving the contradiction between enabling positioning and maintaining accuracy
2Measurement precision
If SRS transmission is associated with TEG information to correct timing errors, then positioning accuracy is improved, but system complexity increases due to additional capability reporting and configuration
Solution Approach 1:
The patent makes the TEG information mechanism universal by designing it to work with different SRS usage types (codebook, non-codebook, beam management, antenna switching). The same TEG reporting framework adapts to multiple SRS configurations, improving positioning accuracy without proportionally increasing complexity, as the underlying mechanism remains consistent across different scenarios
Solution Approach 2:
The patent implements preliminary action by having the UE report capability information about TEG support in advance, before actual positioning measurements. The network then configures appropriate TEG parameters based on this pre-reported capability, avoiding runtime complexity and streamlining the positioning process while maintaining accuracy
Data Source
AI summary
Systems and methods for indicating positioning information in wireless communication systems are disclosed. In one aspect, the method includes determining, by a wireless communication device, transmission Timing Error Group (TEG) information of the wireless communication device according to at least one of usage of Sounding Reference Signal (SRS) transmission, UE antenna coherent capability, UE antenna switching capability, or SRS port. The transmission TEG information includes at least one of a number of transmission TEGs, an association between the transmission TEGs and SRS transmission. The SRS transmission includes at least one of a SRS resource set, a SRS resource, or a SRS port. The method also includes communicating, by the wireless communication device with a network, using the transmission TEG information.