Rx-Tx Time Difference Quotient Remainder Reporting
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G networks, face challenges in accurately determining the location of user equipment (UE) due to limitations in reception-to-transmission time difference measurements, which affect positioning accuracy and efficiency.
Innovation Solution
A method is introduced where a first network node performs a reception-to-transmission (Rx-Tx) time difference measurement and transmits a measurement report to a positioning entity, including quotient and remainder values based on the measurement, to enhance positioning accuracy and efficiency in 5G wireless communications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If reception-to-transmission time difference measurements are performed for UE location determination, then positioning accuracy is improved, but measurement precision is insufficient due to limitations in current 5G network capabilities
Solution Approach 1:
The measurement report is segmented into multiple components: a first value representing the quotient of the time difference divided by a threshold, and a second value representing the remainder. This segmentation allows the network to handle large time difference values while maintaining precision through the quotient-remainder representation, resolving the contradiction between positioning accuracy and measurement reliability.
Solution Approach 2:
The patent changes the parameter representation from a direct time difference value to a quotient-remainder pair based on division by a threshold. This parameter transformation enables more reliable transmission and processing of measurement data while preserving positioning accuracy, as the quotient and remainder values can be efficiently handled in the network.
2Measurement precision
If precise time difference measurements are transmitted to positioning entities, then location determination accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent extracts only the necessary information from the full time difference measurement and represents it through the quotient and remainder values. By taking out the essential measurement data and encoding it in this compressed form, the system reduces signaling overhead while maintaining the precision needed for accurate location determination.
Solution Approach 2:
The patent transforms the measurement representation from a single large value to a pair of smaller values (quotient and remainder). This dimensional change in the data representation reduces the signaling burden while preserving the measurement precision, as the quotient-remainder pair conveys the same information more efficiently.
Data Source
AI summary
Disclosed are techniques for wireless positioning. In an aspect, a first network node performs a reception-to-transmission (Rx-Tx) time difference measurement, the Rx-Tx time difference measurement representing a difference between a reception time of at least one first positioning reference signal (PRS) from a second network node and a transmission time of at least one second PRS to the second network node, and transmits, to a positioning entity, based on a value of the Rx-Tx time difference measurement being greater than a threshold, a measurement report including a first value and a second value representing the value of the Rx-Tx time difference measurement, wherein the first value is a quotient value resulting from dividing the value of the Rx-Tx time difference measurement by the threshold, and wherein the second value is a remainder value resulting from dividing the value of the Rx-Tx time difference measurement by the threshold.