NTN Sidelink Relay Access Using Location and Time Triggers
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Solution Overview
Problem
In non-terrestrial networks (NTNs), the signal quality of the NTN cell cannot accurately reflect the near-far effect, making signal quality-based measurements infeasible for sidelink relay operations such as relay discovery and selection, leading to potential resource wastage or connection failures.
Innovation Solution
A wireless communication method that utilizes location and time information, such as distance and coverage duration, to determine when to perform sidelink relay operations, complementing signal quality measurements to improve the rationality of relay processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If signal quality measurement is used for relay operations in NTN, then the measurement process is simple, but the measurement accuracy is insufficient to reflect the near-far effect
Solution Approach 1:
The patent combines multiple measurement parameters (signal quality, location information, time information) into a comprehensive measurement framework for relay operations. This merging approach allows the system to overcome the insufficiency of single-parameter signal quality measurement in NTN environments while maintaining manageable complexity through integrated processing.
2Ease of operation
If signal quality-based relay selection is performed in NTN, then the selection process is straightforward, but resource wastage and connection failures occur
Solution Approach 1:
The patent implements feedback mechanisms where measurement results (signal quality, location, time) are continuously monitored and used to adjust relay selection decisions. This feedback loop enables the system to identify suitable relay devices more accurately, reducing connection failures and resource wastage while maintaining operational simplicity through automated decision-making.
3Adaptability or versatility
If multiple relay operations are performed in NTN, then comprehensive relay discovery and selection are achieved, but resource consumption increases
Solution Approach 1:
The patent performs preliminary measurements and evaluations (signal quality, location, time information) before initiating relay operations. By preparing measurement data in advance and pre-identifying suitable relay devices, the system reduces the need for extensive ongoing measurements and operations, thereby achieving comprehensive relay discovery while minimizing resource consumption during actual communication.
Data Source
AI summary
A wireless communication method and a terminal device are provided. The method includes the following. A first terminal device performs a first operation when a first condition is met, where the first operation is related to a process of accessing a network device by the first terminal device through a first relay device. The first condition is associated with first location information and/or first time information. The first location information indicates location information of the first terminal device in a serving cell. The first time information indicates time information when the serving cell serves or stops serving the first terminal device.