SS/PBCH Block Operation Modes for Large Subcarrier Spacing
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Solution Overview
Problem
Current wireless communication systems face challenges in supporting larger subcarrier spacing for SS/PBCH blocks, particularly in higher frequency ranges, which affects initial cell selection and synchronization in advanced wireless communication systems.
Innovation Solution
The implementation of different operation modes for SS/PBCH blocks, allowing for configuration as either licensed-assisted-access secondary cells or primary cells, with specific sets of parameters for each mode that include variations in structure and time-domain mapping patterns, enabling support for larger subcarrier spacing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If larger subcarrier spacing is implemented for SS/PBCH blocks in higher frequency ranges, then initial cell search performance and synchronization are improved, but device complexity and parameter configuration complexity increase
Solution Approach 1:
The patent implements dynamic operation modes for SS/PBCH blocks that can be configured as either licensed-assisted-access secondary cells or primary cells, allowing the system to adaptively select appropriate subcarrier spacing and parameter sets based on deployment scenarios. This dynamic configuration enables larger subcarrier spacing to be used when needed for high frequency ranges while maintaining flexibility to use conventional configurations elsewhere, thus improving measurement precision without permanently increasing device complexity.
Solution Approach 2:
The patent introduces different parameter sets for different operation modes, where each parameter set includes specific configurations for SS/PBCH block structure and time-domain mapping patterns. By changing parameters such as subcarrier spacing, cyclic prefix length, and resource block allocation based on the selected operation mode, the system can optimize carrier frequency offset detection for higher frequency ranges while managing complexity through standardized parameter groups.
2Adaptability or versatility
If different parameter sets are configured for different operation modes, then adaptability to various deployment scenarios is improved, but ease of operation and configuration simplicity deteriorate
Solution Approach 1:
The patent segments the configuration space into distinct operation modes (licensed-assisted-access secondary cell mode and primary cell mode), each with its own parameter set. This segmentation allows the system to handle different deployment scenarios independently with mode-appropriate parameters, improving adaptability. The clear separation into discrete modes simplifies the configuration process compared to managing continuous parameter variations, as devices only need to select from predefined mode categories rather than configuring individual parameters independently.
Solution Approach 2:
The patent creates a universal framework where a single SS/PBCH block structure can serve multiple functions through different operation modes. The same physical channel structure supports both licensed-assisted-access secondary cell operations and primary cell operations by applying different parameter sets, thereby achieving versatility without requiring separate configurations for each scenario. This multi-functionality approach reduces configuration complexity by reusing the same channel structure across different modes.
3Speed
If SS/PBCH blocks are used on LAA secondary cells with specific parameter sets, then support for higher frequency ranges is improved, but time-domain overhead ratios may increase
Solution Approach 1:
The patent applies parameter changes by configuring specific subcarrier spacing and cyclic prefix lengths for LAA secondary cell operation modes. By adjusting these parameters, the system can support higher frequency ranges with larger subcarrier spacing while managing time-domain overhead through optimized cyclic prefix configurations. The parameter sets are designed to balance frequency range support capabilities with time-domain resource efficiency.
Solution Approach 2:
The patent applies local quality by allowing different parameter configurations for different cell types and frequency ranges. LAA secondary cells can use parameter sets optimized for their specific requirements (including larger subcarrier spacing for higher frequencies) while primary cells use different parameter sets. This localized optimization ensures that time-domain overhead is managed appropriately for each deployment scenario rather than applying a one-size-fits-all configuration.
Data Source
AI summary
A UE in a wireless communication system is provided. The UE comprises a transceiver configured to receive SS/PBCH block over downlink channels using a set of parameters based on an operation mode. The operation mode is configured for the SS/PBCH block as a first operation mode in which the SS/PBCH block is used on a LAA Scell or a second operation mode in which the SS/PBCH block is at least used on a Pcell. The set of parameters is configured as a first set of parameters for the SS/PBCH block when the operation mode of the SS/PBCH block is configured as the first operation mode or a second set of parameters for the SS/PBCH block when the operation mode of the SS/PBCH block is configured as the second operation mode. The first and second set of parameters include different information each other.


