SSB Patterns With Configurable Gaps For Higher SCS
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Solution Overview
Problem
Wireless communication systems face challenges in managing and optimizing finite wireless channel resources due to signal attenuation and blocking in complex and dynamic environments, particularly with higher frequency subcarrier spacing (SCS) that results in shorter symbols and reduced beam sweeping time.
Innovation Solution
The implementation of synchronization signal block (SSB) patterns with configurable gaps to accommodate higher SCS, allowing for efficient sweeping of SSB beams over SSB bursts and optimizing random access channel (RACH) procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If higher frequency subcarrier spacing (SCS) is used, then spectral efficiency and data rate are improved, but beam sweeping time is reduced and signal management becomes more challenging
Solution Approach 1:
The patent segments the SSB transmission into multiple SSB bursts with configurable gaps between them. Each burst contains multiple SSB slots that sweep through different beams. This segmentation allows the system to maintain comprehensive beam coverage while introducing flexible timing control through the gaps, thereby managing the reduced beam sweeping time caused by higher SCS effectively.
Solution Approach 2:
The patent introduces dynamic configurability in the gap duration between SSB bursts and within bursts. The gaps can be configured based on the specific SCS and operational requirements. This dynamic adjustment allows the system to adapt the timing parameters to match the faster symbol durations in higher SCS systems, maintaining synchronization and beam sweeping effectiveness without fixed rigid structures.
2Reliability
If SSB beams are swept over multiple bursts with gaps, then signal management is improved, but transmission time increases
Solution Approach 1:
The patent performs preliminary configuration of the SSB pattern, including the timing and duration of gaps between bursts and within bursts. This configuration is established in advance based on the required number of beams and the specific SCS. By pre-determining the optimal gap durations and burst structures, the system achieves effective signal management and beam sweeping while minimizing the total transmission time without requiring real-time adjustments.
3Productivity
If configurable gaps are introduced between SSB slots, then beam sweeping efficiency is improved, but complexity of pattern configuration increases
Solution Approach 1:
The patent manages configuration complexity by changing key parameters such as gap duration in milliseconds and the number of SSB slots per burst. Rather than requiring complex multi-dimensional configuration, the system uses a simplified parameter set where the gap duration and slot count can be adjusted to achieve the desired beam sweeping pattern. This parameter-based approach maintains beam sweeping efficiency while keeping the configuration process straightforward and manageable.
Data Source
AI summary
Certain aspects of the present disclosure provide techniques for wireless communication for a network entity, comprising transmitting signaling indicating a synchronization signal block (SSB) pattern that identifies SSB slots for sweeping a set of SSB beams over one or more SSB bursts with configurable gaps between at least some of the SSB slots, and transmitting SSBs in accordance with the pattern.