6G Pilot Signal Design for Terminal Synchronization and Positioning
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Solution Overview
Problem
Future radio communication systems, such as 6G, face challenges in designing new signals for operations like initial connection, demodulation, and positioning due to the introduction of 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 includes a receiving section for pilot signals generated based on cell identification numbers, enabling synchronization, demodulation, and positioning processing with low latency and reduced terminal load, using single carrier transmission and new signal patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing synchronization and reference signals are used in high-frequency bands (terahertz waves), then communication operations (initial connection, demodulation, positioning) cannot be appropriately performed, but introducing new signals increases system complexity and design difficulty
Solution Approach 1:
The patent applies multi-functionality by designing a new signal that simultaneously serves multiple purposes: synchronization, demodulation reference, and positioning reference. This single new signal replaces the need for separate existing signals, ensuring appropriate communication performance in high-frequency bands while managing system complexity through functional consolidation.
2Reliability
If new signals are introduced for future radio communication systems, then communication can be appropriately performed in high-frequency bands, but insufficient design studies lead to degraded communication quality
Solution Approach 1:
The patent applies parameter changes by modifying signal characteristics specifically for high-frequency band operation. The new signal uses different sequence structures (e.g., Zadoff-Chu sequences with specific root indices, M-sequences) and resource element patterns optimized for terahertz wave properties, ensuring both appropriate communication performance and high measurement precision through carefully selected physical layer parameters.
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 a pilot signal with sequences generated based on an identification number of a cell; and a control section that controls synchronization processing, demodulation processing, and positioning processing, based on at least part of the sequences of the pilot signal or at least part of resources corresponding to the pilot signal.