Terminal and Base Station Synchronization Across Two Radio Systems
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Solution Overview
Problem
Future radio communication systems, such as 6G, face challenges in designing and utilizing new signals for operations like initial connection, demodulation, and positioning due to high-frequency bands like terahertz waves, which affect signal rectilinearity, frequency selectability, and phase noise, making existing synchronization and reference signals inadequate.
Innovation Solution
A terminal and base station design that supports single carrier transmission, utilizing new pilot signals with specific sequences and configurations for synchronization, demodulation, and positioning, enabling low-latency operations with reduced terminal load and resource overhead, and allowing coexistence with existing systems like 4G and 5G.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing synchronization signals and reference signals are used in high-frequency bands (terahertz waves), then communication can be maintained with current systems, but signal rectilinearity deteriorates, frequency selectability decreases, and phase noise increases making communication inappropriate
Solution Approach 1:
The patent introduces new synchronization signals and reference signals specifically designed for high-frequency bands (terahertz waves) with modified parameters optimized for these conditions. The new signals have different characteristics from existing signals to compensate for signal rectilinearity deterioration, frequency selectability decrease, and phase noise increase in high-frequency environments, enabling appropriate communication in 6G systems.
2Reliability
If new synchronization signals and reference signals are introduced for high-frequency bands, then communication quality improves in 6G systems, but system complexity increases and design studies are insufficient
Solution Approach 1:
The patent segments the signal design into distinct components: new synchronization signals for time/frequency synchronization, new reference signals for channel estimation, and specific signal configurations for different operations (initial connection, demodulation, positioning). This segmentation allows systematic design and study of each component's characteristics for high-frequency bands, reducing overall design complexity while improving communication quality.
3Adaptability or versatility
If new signals are introduced for future radio communication systems, then support for 6G and later generations is enabled, but existing systems lack sufficient study on design and feature of such new signals
Solution Approach 1:
The patent performs preliminary design and definition of new synchronization signals and reference signals for 6G and future radio communication systems. By establishing signal structures, sequences, and configurations in advance, the patent creates a foundation for future system deployment and reduces the need for extensive redesign later, compensating for the current lack of design studies on high-frequency band signals.
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3A~3B
AI summary
A terminal according to an aspect of the present disclosure includes: a receiving section that receives, in a first radio communication system, a synchronization signal/physical broadcast channel (SS/PBCH) block including a first synchronization signal, a second synchronization signal, and a physical broadcast channel and receives, in a second radio communication system, a signal group for the second radio communication system; and a control section that controls at least one of synchronization processing, frequency offset correction, cell ID specification, system information acquisition, and cell positioning in the second radio communication system, based on both the SS/PBCH block and the signal group.