Dynamic SSB-Based RACH Validity for Collision-Aware Uplink Access
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Solution Overview
Problem
Current wireless communication systems face inefficiencies due to outdated collision handling rules that do not account for dynamically updated synchronization signal block (SSB) configurations, leading to suboptimal use of resources and potential collisions with random access channel (RACH) and physical uplink shared channel (PUSCH) occasions.
Innovation Solution
Adaptive RACH procedures are implemented by considering dynamically updated SSB configurations to determine valid or invalid RACH and PUSCH occasions, allowing for efficient resource utilization and network energy savings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If dynamic SSB configuration is implemented, then network energy savings and resource efficiency are improved, but collision handling reliability deteriorates due to outdated rules
Solution Approach 1:
The patent implements dynamic SSB configuration where the network can update SSB transmission patterns in real-time based on actual network conditions. This allows the system to adapt SSB configurations dynamically rather than using static configurations, thereby improving energy efficiency while maintaining reliable collision handling through updated validity determination rules.
Solution Approach 2:
The patent establishes a feedback mechanism where the network determines validity of RACH and PUSCH occasions based on updated SSB configurations and communicates this information to UEs. This feedback loop ensures that collision handling remains reliable even as SSB configurations change dynamically, resolving the contradiction between energy savings and reliability.
2Productivity
If SSB configuration is updated dynamically, then resource utilization efficiency is improved, but system complexity increases
Solution Approach 1:
The patent creates a universal validity determination mechanism that works across different SSB configurations and scenarios. The same principles and rules are applied regardless of how SSB configurations change, which manages system complexity while enabling dynamic resource utilization improvements.
Solution Approach 2:
The patent manages complexity by focusing changes on specific parameters (SSB configuration parameters) rather than overhauling the entire system. By changing only the necessary parameters and maintaining consistent determination rules, the system achieves improved resource utilization without excessive complexity increase.
3Productivity
If validity determination is performed based on updated SSB configuration, then transmission efficiency is improved, but processing overhead increases
Solution Approach 1:
The patent performs preliminary validity determination of RACH and PUSCH occasions based on updated SSB configurations before actual transmissions occur. This advance determination prevents wasted transmissions and reduces processing overhead during actual data transmission, improving overall efficiency while managing processing time requirements.
Data Source
AI summary
Certain aspects of the present disclosure provide techniques for dynamic synchronization signal configuration and random access. A method for wireless communication by a user equipment may include receiving a first SSB configuration indicating a plurality of SSB transmissions and determining, based on the first SSB configuration, random access occasions of a set of ROs as valid or invalid and physical uplink shared channel occasions of a set of POs as valid or invalid. The method may include receiving an updated SSB configuration and re-determining, based on the updated SSB configuration, whether the ROs of the set of ROs are valid or invalid and whether the POs of the set of POs are valid or invalid. The method may include transmitting in the set of ROs and the set of POs based on the determination of the valid or invalid ROs and the valid or invalid POs.