Beamformed PRS Coordination for Faster Wireless Positioning
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently performing positioning, particularly in reducing the time required for positioning and simultaneously managing beamforming and positioning procedures.
Innovation Solution
The method involves transmitting and receiving positioning reference signals (PRS) using a plurality of transmit beams through coordinated messaging between terminals, allowing for separate management of PRS transmission requests and beam management in the millimeter wave band.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If positioning reference signals are transmitted using multiple beams sequentially, then positioning accuracy is improved, but positioning time increases
Solution Approach 1:
The patent applies preliminary action by having the receiving terminal transmit a first message requesting PRS transmission before the actual signal transmission occurs. The scheduling terminal receives this request and prepares the scheduling information in advance, allowing for more efficient coordination and reducing overall positioning time while maintaining multi-beam accuracy.
Solution Approach 2:
The patent implements feedback mechanisms where the receiving terminal sends requests for PRS transmission, and the scheduling terminal responds with scheduling information. This feedback loop enables dynamic adjustment and coordination between terminals, optimizing the timing and sequence of beam transmissions to balance accuracy and speed.
2Device complexity
If beam management and positioning procedures are performed separately, then procedure complexity is reduced, but total processing time increases
Solution Approach 1:
The patent merges beam management and positioning procedures by integrating the PRS transmission request and scheduling mechanisms into the existing beam management framework. The first and second messages exchanged between terminals handle both beam selection and positioning signal coordination simultaneously, reducing overall processing time while maintaining manageable complexity through structured message formats.
Data Source
AI summary
The present disclosure is for performing positioning by means of a beamformed signal in a wireless communication system. An operation method by a terminal in a wireless communication system can comprise the steps of: transmitting first messages requesting transmission of a positioning reference signal (PRS) by means of a plurality of transmission beams; receiving from a second terminal a second message indicating at least one transmission beam among the plurality of transmission beams; transmitting a third message, comprising scheduling information for transmission of the PRS, to the second terminal by means of the transmission beam; and receiving the PRS from the second terminal on the basis of the scheduling information.