Synchronization Signal Block Timing Configuration for NR Access
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Solution Overview
Problem
In New Radio Access (NR), there is a lack of detailed solutions for configuring synchronization signal (SS) blocks and indicating their timing information to terminal devices, which is essential for initial access and synchronization in varying frequency ranges and subcarrier spacing values.
Innovation Solution
The method involves determining and transmitting information on SS blocks based on frequency range and subcarrier spacing, including timing information, to enable accurate detection by terminal devices, using predefined configurations for different frequency ranges and subcarrier spacing values, and employing DMRS sequences and scrambling sequences for PBCH to indicate SS block indices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If detailed solutions are provided for configuring SS blocks for all frequency ranges and subcarrier spacing values, then detection accuracy by terminal devices is improved, but device complexity and configuration overhead increase
Solution Approach 1:
The patent applies universality by designing a unified SS block configuration framework that works across multiple frequency ranges (FR1, FR2, FR3) and subcarrier spacing values (15kHz, 30kHz, 120kHz, 240kHz). The same configuration parameters and procedures are used universally regardless of the specific frequency range or subcarrier spacing, eliminating the need for separate detailed configurations for each scenario while maintaining detection accuracy.
2Adaptability or versatility
If SS block transmission is configured for multiple frequency ranges and subcarrier spacing values, then adaptability of the system is improved, but information overhead for indicating timing increases
Solution Approach 1:
The patent applies local quality by providing specific timing indication mechanisms tailored to different frequency ranges and subcarrier spacing values. Instead of using a single uniform approach, the system selectively applies appropriate timing indication methods (such as different slot offsets, symbol positions, or reference signal configurations) based on the local characteristics of each frequency range and subcarrier spacing combination, thereby achieving adaptability without excessive information overhead.
3Measurement precision
If SS block timing information is explicitly indicated for each frequency range and subcarrier spacing value, then synchronization accuracy is improved, but transmission overhead increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring and pre-synchronizing SS block timing information during system setup and initialization phases. The network device pre-determines appropriate timing configurations for different frequency ranges and subcarrier spacing values, and terminal devices pre-acquire this timing information through prior synchronization procedures. This eliminates the need for continuous explicit timing indications during normal operation, thereby maintaining synchronization accuracy while reducing transmission overhead.
Data Source
AI summary
Embodiments of the present disclosure relate to methods and an apparatuses for synchronization signal (SS) transmission. In example embodiments, a method implemented in a network device is provided. According to the method, information on a plurality of SS blocks to be transmitted by the network device is determined based on at least one of a frequency range and a value of subcarrier spacing. The information at least in part indicates timing for transmitting the plurality of SS blocks The plurality of SS blocks are transmitted to at least one terminal device based on the determined information.