PRACH-SSB Association Period Determination for Uplink Coverage
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Solution Overview
Problem
Existing communication systems, particularly in NR technology, face challenges in realizing PRACH repetitions due to the lack of a mechanism to effectively associate SSBs with random access resources, leading to inefficient utilization of PRACH resources and reduced uplink coverage.
Innovation Solution
A method is introduced where the terminal device determines the association period between PRACH occasions and SSBs based on the number of PRACH repetitions, allowing each SSB to be associated with multiple PRACH occasions within an association period, thereby optimizing the utilization of PRACH resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device determines association period between PRACH occasions and SSBs according to the number of PRACH repetitions, then the coverage performance is improved, but the device complexity increases
Solution Approach 1:
The patent changes the parameter of association period determination from fixed to dynamic, where the terminal device determines the association period between PRACH occasions and SSBs according to the number of PRACH repetitions. This parameter change enables flexible adaptation to different coverage scenarios, improving coverage performance while managing device complexity through standardized determination rules.
2Productivity
If each SSB is associated with multiple PRACH occasions within an association period, then the PRACH resource utilization is improved, but the system complexity increases
Solution Approach 1:
The patent implements multi-functionality by enabling each SSB to be associated with multiple PRACH occasions within an association period. This universal association mechanism allows the same SSB to serve multiple random access purposes, improving PRACH resource utilization while maintaining manageable system complexity through standardized association rules.
3Reliability
If PRACH repetitions are introduced to improve coverage, then the coverage performance is improved, but the resource overhead increases
Solution Approach 1:
The patent introduces dynamics by making the association period adaptable to the number of PRACH repetitions. The terminal device dynamically determines the association period based on the repetition count, allowing the system to optimize coverage performance while controlling resource overhead through flexible, condition-based resource allocation.
Data Source
AI summary
A method for information processing and a terminal device is provided. The method includes the following. The terminal device determines related information of an association period between physical random access channel (PRACH) occasions and synchronization signal/physical broadcast channel blocks (SS/PBCH blocks, SSBs) according to the number of PRACH repetitions.