Synchronization Signal Structure for Faster NR Signal Detection
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Solution Overview
Problem
The complexity of synchronization signal detection in new radio (NR) systems is excessive due to varying frame structure parameters across different carrier frequencies or services, leading to prolonged detection times and low success rates.
Innovation Solution
A method and apparatus for transmitting and receiving synchronization signals with a predetermined structure based on system parameters, limiting options to a reasonable range by ensuring consistent synchronization signal structures across varying parameters, reducing detection complexity and latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple frame structure parameters are used to adapt to different carrier frequencies and services, then the system's adaptability and coverage are improved, but the synchronization signal detection complexity increases and detection time is prolonged
Solution Approach 1:
The patent applies parameter changes by establishing a mapping relationship between carrier frequency ranges and subcarrier spacings. Different frequency bands (e.g., sub-6G, 6G-100G) are assigned specific subcarrier spacing values (15kHz, 30kHz, 60kHz, etc.), allowing the system to adapt to different frequencies and services while providing preset synchronization signal parameters to terminals, thereby reducing detection complexity.
2Adaptability or versatility
If multiple frame structure parameters are used for different services on the same carrier, then the system supports diverse services (URLLC, eMBB, mMTC), but the synchronization signal detection success rate decreases and latency increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring synchronization signal parameters based on carrier frequency information before terminal detection. The network side determines the subcarrier spacing according to the carrier frequency range and presets the synchronization signal parameters accordingly, so that terminals can directly use these preset parameters for detection, avoiding the need to try multiple parameter combinations and thus improving detection success rate and reducing latency.
3Adaptability or versatility
If terminals try different synchronization signals multiple times without preset information, then the system maintains flexibility, but the detection time is prolonged and detection success rate is low
Solution Approach 1:
The patent applies feedback by having the network side provide carrier frequency information and corresponding synchronization signal parameters to terminals. The terminal uses this feedback information to select the appropriate synchronization signal parameters for detection, eliminating the need for blind trial of multiple parameters and significantly reducing detection time while maintaining the ability to adapt to different frequency bands and services.
Data Source
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AI summary
Embodiments of the disclosure provide methods and apparatuses for transmitting and receiving a synchronization signal, and a transmission system. A method includes that, a base station determines one or more sets of system parameters, each set of the system parameters including at least one of the following information of a carrier: frequency information, or a frame structure parameter; the base station constructs a synchronization signal of a predetermined structure according to the system parameters; and the base station transmits the synchronization signal to the terminal; the one or more sets of system parameters corresponding to the same predetermined structure. With the embodiments of the disclosure, the problem of excessive complexity in detection of the synchronization signal in the related technology is solved.