Synchronization Signal Block Multiplexing With Uplink Transmissions
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Solution Overview
Problem
The extension of 5G NR to frequency bands beyond 52.6 GHz poses challenges due to collisions between SSBs and UL/PUCCH transmissions, especially when SCS for SSBs is larger than for data signals, leading to potential losses in unlicensed spectrum usage.
Innovation Solution
Modifying the SSB pattern to account for UL transmission and CORESET with multi-slot data transmission, enabling multi-slot scheduling and PUCCH resource aggregation to avoid collisions, and using listen-before-talk procedures for unlicensed spectrum access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If SSB pattern is modified to account for UL transmission and CORESET with multi-slot data transmission, then collision avoidance between SSBs and UL/PUCCH transmissions is achieved, but system complexity increases
Solution Approach 1:
The patent segments the transmission resources by creating separate time slots and resource allocations for SSB transmissions, UL transmissions, and CORESET operations. By dividing the transmission framework into distinct segments with clear boundary definitions, the system avoids collisions while maintaining manageable complexity through structured resource separation.
Solution Approach 2:
The patent introduces dynamic scheduling mechanisms where the network can flexibly allocate and adjust transmission resources based on real-time conditions. The multi-slot scheduling and PUCCH resource aggregation allow the system to adaptively manage conflicts between SSB and UL transmissions, resolving collisions dynamically without requiring rigid system restructuring.
2Productivity
If multi-slot scheduling and PUCCH resource aggregation are used, then unlicensed spectrum usage efficiency improves, but processing complexity increases
Solution Approach 1:
The patent implements preliminary resource aggregation where PUCCH resources are pre-configured and aggregated across multiple slots before actual transmission occurs. This preliminary preparation allows the system to efficiently utilize unlicensed spectrum by having ready-to-use aggregated resources, reducing processing complexity during real-time operations while maintaining high spectrum usage efficiency.
3Reliability
If listen-before-talk procedures are implemented for unlicensed spectrum access, then medium access reliability improves, but transmission delay increases
Solution Approach 1:
The patent maintains continuous monitoring and readiness for LBT procedures across multiple slots and transmissions. By keeping the listen-before-talk mechanism continuously active and integrated into the multi-slot scheduling framework, the system ensures reliable medium access while minimizing idle delays through uninterrupted monitoring and immediate transmission readiness when channels become available.
Data Source
AI summary
The present application relates to devices and components including apparatus, systems, and methods of scheduling transmission of synchronization signal blocks (SSB) at a first subcarrier spacing (SCS) with uplink and downlink transmissions at a second SCS that is higher than the first SCS.