Synchronization Signal Burst Set Pattern Adaptation
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently scheduling and conveying synchronization signal (SS) blocks, particularly in varying data tone or subcarrier spacing scenarios, which affects initial access and system acquisition for user equipment (UE) in wireless networks.
Innovation Solution
The described techniques involve determining and transmitting synchronization signal burst set patterns based on numerology used for synchronization signals and non-synchronization signals, allowing for flexible scheduling and indication of SS block positions, enabling efficient initial access and communication by UE.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed SS block transmission patterns are used, then initial access procedure is standardized, but flexibility in adapting to different numerologies and system conditions is reduced
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting SS block time locations, periodicities, and burst set patterns based on numerology parameters (subcarrier spacing, cyclic prefix length) and system conditions. The base station selects from multiple predefined patterns or generates custom patterns based on numerical parameters, allowing adaptation to different numerologies while maintaining manageable complexity through parameterized pattern selection.
Solution Approach 2:
The patent implements dynamics by making SS burst set patterns configurable and adaptable rather than fixed. The base station can dynamically select different patterns from a set of predefined options or generate patterns based on current system conditions and numerology requirements. This dynamic approach allows the system to adapt to varying conditions while the UE can efficiently process through pattern indication mechanisms.
2Reliability
If SS blocks are transmitted frequently to improve initial access reliability, then system acquisition reliability is improved, but time and frequency resource consumption increases
Solution Approach 1:
The patent applies dynamics by enabling dynamic adjustment of SS block periodicity and burst set configurations based on system conditions, cell type, and numerology. The base station can select from multiple patterns with different periodicities (e.g., 5ms, 10ms, 20ms) and burst sizes, allowing optimization between reliability and resource consumption. During initial access, more frequent transmissions can be used, while established connections can use less frequent patterns.
Solution Approach 2:
The patent uses parameter changes by varying SS block transmission parameters (periodicity, burst set size, time locations) based on numerical parameters and system conditions. Different numerologies allow for optimized parameter selections that balance reliability requirements with resource efficiency. The system can adjust parameters such as subcarrier spacing and cyclic prefix configuration to optimize initial access reliability while controlling resource usage.
3Adaptability or versatility
If multiple SS block patterns are supported for different numerologies, then versatility is improved, but signaling overhead and pattern identification complexity increases
Solution Approach 1:
The patent applies universality by designing a unified pattern indication mechanism that can represent multiple SS burst set patterns applicable to different numerologies. The base station indicates pattern information that the UE can interpret in the context of the active numerology, allowing a single signaling mechanism to serve multiple numerology scenarios. This multi-functional approach reduces the need for separate indication mechanisms for each numerology.
Solution Approach 2:
The patent uses parameter changes by encoding pattern information in a compact form that adapts to the active numerology parameters. The pattern indication can reference predefined patterns or provide compact descriptors that the UE uses to determine actual time locations and configurations based on the active numerology. This parameter-based approach allows efficient representation of multiple patterns without excessive signaling overhead.
4Productivity
If SS block time locations are optimized for specific numerologies, then transmission efficiency is improved, but compatibility with other numerologies is reduced
Solution Approach 1:
The patent applies parameter changes by defining SS block time locations and patterns in terms of flexible parameters (slots, symbols, offsets) that can be scaled according to numerology. The same pattern description can be adapted to different subcarrier spacings and cyclic prefix configurations by adjusting the parameter values. This allows optimization for specific numerologies while maintaining compatibility across others through parameter reconfiguration.
Solution Approach 2:
The patent implements universality by creating a unified pattern framework that can serve multiple numerologies. The base station selects or generates patterns that are valid across the supported numerology range, and the UE interprets pattern indications in the context of its configured numerology. This multi-functional pattern system allows a single mechanism to achieve transmission efficiency for specific numerologies while maintaining broad compatibility.
Data Source
AI summary
Methods, systems, and devices for wireless communication are described that provide for synchronization signal (SS) burst set patterns in which SSs and broadcast channel transmissions may be transmitted (e.g., in time). A base station may identify a SS burst set pattern indicating positions (e.g., time locations) for SS block transmissions, for example, in bandwidth restricted communication systems. The SS burst set pattern may be determined based on numerology or subcarrier spacing associated with SSs and non-SSs. The base station may transmit an indication of the SS burst set pattern to a wireless device. The wireless device may receive the indication of the SS burst set pattern and determine one or more time locations of SSs (e.g., primary synchronization signal (PSS), secondary synchronization signal (SSS), physical broadcast channel (PBCH) of a SS block). The wireless device may then monitor the identified positions for SSs.