Sidelink Feedback Signal Transmission Using Angle Information
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Solution Overview
Problem
In wireless communication systems, particularly in V2X services, there is a need to efficiently manage feedback resources and minimize signaling load and power consumption while ensuring accurate transmission and reception of feedback signals in sidelink communications, especially in scenarios like vehicle platooning and advanced driving where precise angle information is crucial.
Innovation Solution
The method involves including angle information in sidelink signals to determine the transmission and reception of feedback signals, ensuring that only relevant User Equipment (UEs) within a specified angle range and threshold distance receive or transmit feedback, thereby optimizing resource usage and reducing unnecessary signaling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If feedback signals are transmitted by all UEs receiving sidelink signals, then feedback reliability is improved, but signaling load and power consumption increase
Solution Approach 1:
The patent applies local quality by making feedback transmission behavior UE-specific based on its spatial location relative to the transmitting UE. Each UE determines whether to transmit feedback based on whether it falls within the beam coverage area, rather than applying a uniform feedback policy to all receiving UEs. This localized approach ensures reliable feedback from relevant UEs while avoiding unnecessary feedback from UEs outside the intended coverage, thereby reducing overall power consumption and signaling load.
2Reliability
If feedback signals are transmitted by all UEs receiving sidelink signals, then feedback reliability is improved, but signaling load increases
Solution Approach 1:
The patent implements local quality by differentiating feedback requirements based on each UE's spatial position within the beam coverage area. Only UEs that are actually covered by the transmitted beam are required to provide feedback, while UEs outside the coverage area do not transmit feedback. This spatially-selective feedback mechanism maintains reliability for covered UEs while significantly reducing the total quantity of feedback signals in the system.
3Productivity
If angle information is included in sidelink signals, then feedback resource management is improved, but device complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring beam coverage area information and angle-related parameters in the sidelink signals before feedback transmission is required. The transmitting UE performs beam management and determines coverage areas in advance, embedding this information in the sidelink transmission. This preliminary preparation enables receiving UEs to quickly determine their status relative to the beam coverage without complex real-time calculations, thus improving feedback resource management while keeping device complexity manageable.
Data Source
AI summary
Disclosed are a method for a first UE to transmit a feedback signal in a wireless communication system supporting sidelink, and a device for same, according to various embodiments. The method for the UE to transmit a feedback signal includes the steps of: receiving a sidelink signal from a second UE; and determining whether to transmit the feedback signal for the first sidelink signal on the basis of the sidelink signal, wherein the sidelink signal includes angle information pertaining to the transmission of the feedback signal, and whether to transmit the feedback signal is determined on the basis of the angle information.