SSB Group Frequency Mapping for Terahertz Beam Synchronization
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Solution Overview
Problem
In wireless communication systems operating in terahertz bands, the increased number of beams requires excessive resources for transmitting and receiving synchronization signal blocks (SSBs), leading to inefficiencies.
Innovation Solution
A method and device for SSB transmission and reception that involve identifying SSB groups related to different frequency domains, allowing for resource mapping and transmission/reception of SSBs across these domains, reducing beam sweeping resource overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the number of beams is increased to provide coverage in terahertz bands, then the coverage and signal reaching distance are improved, but the resource overhead for SSB transmission and reception becomes excessive
Solution Approach 1:
The patent divides the set of SSBs into multiple SSB groups, where each group is associated with a specific frequency domain. This segmentation allows the UE to efficiently manage and receive SSBs across different frequency domains without requiring excessive resources for beam sweeping, thus resolving the contradiction between coverage area and resource overhead.
Solution Approach 2:
The patent introduces a frequency domain dimension to organize SSB groups. By associating each SSB group with a specific frequency domain and enabling UEs to camp on frequency domains rather than individual SSBs, the system reduces the resource overhead for beam sweeping while maintaining comprehensive coverage across multiple beams and frequency domains.
2Area of stationary object
If beam sweeping is performed for all SSBs to ensure complete coverage, then the coverage is improved, but the time and resources required for synchronization increase
Solution Approach 1:
The patent performs preliminary organization of SSBs into groups associated with specific frequency domains before the UE needs to synchronize. This preliminary action allows the UE to quickly identify and camp on an appropriate frequency domain and its associated SSB group without having to perform exhaustive beam sweeping across all SSBs, thereby reducing synchronization time while maintaining complete coverage.
3Adaptability or versatility
If the number of SSBs is increased to support more beams in terahertz bands, then the beam diversity and coverage are improved, but the complexity of SSB management increases
Solution Approach 1:
The patent segments the large set of SSBs into multiple manageable groups, each associated with a specific frequency domain. This segmentation reduces the complexity of SSB management by allowing the UE to focus on a specific frequency domain and its associated SSB group, while still benefiting from the diversity of multiple beams across different frequency domains.
Solution Approach 2:
The patent introduces frequency domain as an additional dimension for organizing SSB groups. This dimensional organization simplifies management complexity by providing a structured framework where UEs can efficiently navigate and manage SSBs through frequency domain association rather than dealing with the entire set of SSBs as a single complex structure.
Data Source
AI summary
The present disclosure relates to a 5G or 6G communication system for supporting a data transmission rate higher than that of a 4G communication system, such as LTE. A transmission or reception method of a terminal in a wireless communication system may comprise the steps of receiving a synchronization signal block (SSB) from a base station on the basis of blind detection, on the basis of the received SSB, identifying information on an SSB group to which the SSB belongs, wherein the SSB group is related to a first frequency domain, on the basis of the information on the SSB group, identifying a second frequency domain corresponding to at least one other SSB group, and receiving at least one SSB belonging to the at least one other SSB group from the base station on the basis of the second frequency domain.