UE Latency-Based SSB Selection for RACH Optimization
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Solution Overview
Problem
Current handover solutions in wireless communication networks, particularly for 5G new radio (NR) communications, do not provide the desired level of speed or customization for efficient operations, leading to suboptimal latency and resource allocation in random access procedures.
Innovation Solution
A method and system for wireless communication networks that involve a user equipment (UE) detecting a random access procedure trigger, configuring a selection threshold time based on latency requirements, and selecting a synchronization signal block with corresponding uplink resources to transmit a random access preamble, thereby optimizing handover processes and reducing latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If current handover solutions are used in 5G NR communications, then the handover process can be completed, but the speed and customization level are insufficient leading to suboptimal latency
Solution Approach 1:
The patent implements dynamic selection of synchronization signal blocks based on UE latency requirements. The network entity configures multiple SSBs with different time locations and associations, allowing the UE to dynamically select the most appropriate SSB for random access procedure based on its specific latency needs, thereby optimizing handover speed while controlling latency.
Solution Approach 2:
The patent changes the parameter of SSB association by configuring multiple SSBs with different time locations and different associations with uplink resources. This allows flexible adjustment of the random access timeline parameters to match different UE latency requirements, improving handover performance through parameter optimization.
2Productivity
If current handover solutions are used, then random access procedure can be executed, but resource allocation is suboptimal
Solution Approach 1:
The patent segments the random access resources by associating different synchronization signal blocks with different uplink resource sets. This segmentation allows the network to allocate resources more efficiently based on UE-specific requirements, improving overall resource allocation efficiency while reducing handover time for individual UEs.
Solution Approach 2:
The patent optimizes resource allocation by changing the association parameters between SSBs and uplink resources. By configuring multiple associations with different time locations and resource sets, the system achieves better resource utilization and reduces handover completion time.
3Adaptability or versatility
If synchronization signal block selection is performed without latency consideration, then any SSB can be selected, but the handover process lacks customization and speed optimization
Solution Approach 1:
The patent applies local quality by providing different SSB configurations and associations tailored to specific UE latency requirements. Each UE can receive customized configuration information that matches its specific service needs, enabling both high adaptability and fast handover execution simultaneously.
Solution Approach 2:
The patent enables dynamic adaptation where the network entity can configure different SSB associations based on real-time UE latency requirements. This dynamic customization allows the system to adapt to different service scenarios while maintaining fast handover speed through optimized resource selection.
Data Source
AI summary
A user equipment (UE) may initiate a random access (RACH) procedure using an uplink resource selected based on a corresponding received synchronization signal block. The UE may detect a random access procedure trigger. The UE may configure a selection threshold time. The selection threshold time may be based at least in part on a latency requirement of the UE. The UE may select a synchronization signal block having a corresponding uplink resource within the selection threshold time. The synchronization signal block and corresponding uplink resource satisfy one or more parameters or conditions. The UE may transmit a random access preamble on the corresponding uplink resource.