Reference Signal Time-Difference Measurement with Multi-Sync Timing
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Solution Overview
Problem
Existing wireless communication systems face challenges in accurately measuring time differences between reference signals, which is crucial for advanced synchronization and positioning in future wireless communication systems like 6G, especially in scenarios involving mobile devices and changing synchronization references.
Innovation Solution
A method and device for wireless communication that involves selecting multiple synchronization references and transmitting or receiving reference signals based on specific synchronization timings to accurately measure time differences between these signals, utilizing a first device with transceivers, processors, and memory to execute instructions for synchronization operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single synchronization reference is used, then the system is simple to operate, but the measurement precision of time differences deteriorates in dynamic environments
Solution Approach 1:
The patent segments the synchronization reference into multiple references (first synchronization reference and second synchronization reference) rather than using a single reference. This allows the system to measure time differences between multiple reference signals, thereby improving measurement precision in dynamic environments while maintaining operational simplicity through structured multi-reference architecture
Solution Approach 2:
The patent transitions from a single-dimensional synchronization reference to a multi-dimensional approach by introducing multiple synchronization references with different synchronization timings. This dimensional expansion enables the system to capture time difference information more accurately by comparing multiple reference points in time, thus resolving the contradiction between measurement precision and system complexity
2Measurement precision
If multiple synchronization references are used, then the measurement precision of time differences improves, but the ease of operation deteriorates
Solution Approach 1:
The patent segments the synchronization process into distinct steps: selecting a first synchronization reference, receiving a first reference signal, selecting a second synchronization reference, and transmitting a second reference signal. This segmentation maintains ease of operation by providing clear procedural guidance while achieving high measurement precision through the systematic comparison of multiple synchronization references
Solution Approach 2:
The patent incorporates feedback mechanisms where the first device obtains time difference information based on the synchronization timings and transmits this information to the second device. This feedback loop enhances ease of operation by enabling automatic time difference calculation and communication, reducing manual intervention while maintaining high measurement precision through multi-reference comparison
3Measurement precision
If reference signals are transmitted based on multiple synchronization timings, then the positioning capability improves, but the loss of time increases
Solution Approach 1:
The patent applies preliminary action by having the first device select and prepare the first synchronization reference and transmit the first reference signal before the second device selects and transmits the second reference signal. This preliminary preparation enables efficient time difference measurement and positioning calculation, improving positioning precision while minimizing time loss through structured sequential operations
Solution Approach 2:
The patent maintains continuity of useful action by continuously obtaining time difference information based on synchronization timings and continuously transmitting this information between devices. This continuous operation improves positioning precision through ongoing measurements while reducing time loss by eliminating idle periods and maintaining active synchronization throughout the measurement process
Data Source
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AI summary
A method for performing wireless communication by a first device and a device supporting same are provided. The first device may select a first synchronization reference, receive or transmit a first reference signal on the basis of a first synchronization timing obtained from the first synchronization reference, select a second synchronization reference, and transmit or receive a second reference signal on the basis of a second synchronization timing obtained from the second synchronization reference. Here, at least one of a time difference between reception of the first reference signal and transmission of the second reference signal, and a time difference between transmission of the first reference signal and reception of the second reference signal may be obtained on the basis of the first synchronization timing.