NR Synchronization Signal Block Frequency Mapping
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Solution Overview
Problem
The frequency domain resource mapping relationship in LTE systems is not applicable to NR systems, which complicates the transmission of synchronization signals and physical broadcast channels in New Radio systems.
Innovation Solution
The method involves transmitting NR-PSS, NR-SSS, and NR-PBCH signals using specific frequency domain resources, where the position relationship among these resources satisfies a preset condition, allowing for efficient mapping and transmission of synchronization information and system information in NR systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the LTE frequency domain resource mapping relationship is used in NR systems, then the transmission of synchronization signals and physical broadcast channels becomes complicated
Solution Approach 1:
The patent changes the frequency domain resource allocation parameters for synchronization signals and physical broadcast channel in NR systems. Specifically, it allocates NR-PSS and NR-SSS to occupy 12 contiguous subcarriers (24 resource elements per symbol), while NR-PBCH occupies 24 contiguous subcarriers (48 resource elements per symbol), establishing a new frequency domain mapping relationship that is adapted to NR system requirements rather than reusing LTE parameters
Solution Approach 2:
The patent segments the frequency domain resources into distinct allocations for different signals within the SS block. The synchronization signals (NR-PSS/NR-SSS) are allocated to specific subcarriers (e.g., subcarriers 0-11), while the physical broadcast channel (NR-PBCH) is allocated to adjacent subcarriers (e.g., subcarriers 12-35), creating a segmented frequency domain structure that simplifies transmission and reception operations
2Quantity of substance
If NR-PSS and NR-SSS occupy different number of resource blocks compared to NR-PBCH, then the LTE frequency domain mapping relationship becomes inapplicable
Solution Approach 1:
The patent explicitly changes the resource block allocation parameters to accommodate NR system requirements. NR-PSS and NR-SSS are configured to occupy 12 resource blocks each, while NR-PBCH occupies 24 resource blocks, creating a parameter set that is fundamentally different from LTE and thus inapplicable to LTE mapping relationships, but optimized for NR system performance
3Productivity
If frequency domain resources for NR-PSS, NR-SSS, and NR-PBCH are not properly mapped, then user equipment cannot efficiently receive synchronization and system information
Solution Approach 1:
The patent establishes predetermined frequency domain mapping relationships for SS block transmission before actual transmission occurs. The network device pre-configures the frequency domain positions, subcarrier allocations, and resource block assignments for NR-PSS, NR-SSS, and NR-PBCH according to the specified mapping rules, enabling user equipment to efficiently receive and process synchronization and system information without complex real-time mapping operations
Data Source
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Figure 2b~2c
Figure 2d~2e
AI summary
A method of transmitting a synchronized signal block (SS block), network equipment, and user equipment are disclosed. The SS block includes a New Radio (NR)-primary synchronized signal (PSS), an NR-secondary synchronized signal (SSS), and an NR-physical broadcast channel (PBCH) signal. The method includes: network equipment transmits the NR-PSS by using a first frequency domain resource, transmits the NR-SSS by using a second frequency domain resource, and transmits the NR-PBCH signal by using a third frequency domain resource; and user equipment receives the NR-PSS by using the first frequency domain resource, receives the NR-SSS by using the second frequency domain resource, and receives the NR-PBCH signal by using the third frequency domain resource. A position relationship among the first frequency domain resource, the second frequency domain resource, and the third frequency domain resource satisfies a preset condition.