SSB-Based PRACH Resource Selection for Repeated NR Access
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Solution Overview
Problem
The New Radio (NR) system does not support repeated transmission of Physical Random Access Channel (PRACH), necessitating a method for determining PRACH resources to enable repeated transmission.
Innovation Solution
A method and apparatus for determining a plurality of PRACH resources corresponding to a synchronization signal block (SSB) and selecting target PRACH resources for repeated transmission, utilizing configuration and indication information to optimize resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If PRACH repeated transmission is not supported in NR system, then the system complexity is reduced, but the transmission reliability and coverage are worsened
Solution Approach 1:
The patent segments the PRACH transmission process into multiple independent transmission occasions, where the terminal device can select from multiple determined PRACH resources to perform repeated transmissions. This segmentation allows the system to achieve reliable repeated transmission without requiring complex dedicated repeated transmission mechanisms, thus resolving the contradiction between system complexity and transmission reliability.
2Adaptability or versatility
If multiple PRACH resources are determined for SSB, then the resource allocation flexibility is improved, but the resource management complexity is worsened
Solution Approach 1:
The patent enables the terminal device to autonomously determine multiple PRACH resources corresponding to the detected SSB and select target PRACH resources for repeated transmission based on its own needs. This self-service mechanism allows flexible resource allocation without requiring complex network-side resource management, as the terminal independently manages the selection and execution of PRACH transmissions.
Data Source
AI summary
Disclosed are a resource determination method and apparatus, and a device and a storage medium, which relate to the field of mobile communications. The method comprises: determining a plurality of physical random access channel (PRACH) resources corresponding to a first synchronization signal block (SSB); and determining a plurality of target PRACH resources from among the plurality of PRACH resources, wherein the plurality of target PRACH resources are used for performing repeated PRACH transmission. Provided is a method for determining a PRACH resource, which can realize repeated PRACH transmission.