PRACH Resource Allocation for Repeated NR Random 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
Determine a plurality of PRACH resources corresponding to a synchronization signal block (SSB) and select target PRACH resources for repeated transmission, utilizing different time or slot locations to optimize PRACH repeated transmission efficiency.
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 deteriorates
Solution Approach 1:
The PRACH resources are segmented into multiple distinct time or slot locations, allowing the terminal to perform repeated transmissions across different segments. This segmentation enables reliability improvement without requiring full system-level support for repeated transmission, thus maintaining lower system complexity while achieving the reliability benefits of repeated transmissions.
2Reliability
If multiple PRACH resources are determined for repeated transmission, then the transmission reliability is improved, but the resource allocation complexity increases
Solution Approach 1:
The network device performs preliminary action by pre-configuring multiple PRACH resources with distinct time or slot locations before the terminal needs to perform repeated transmissions. This preliminary setup eliminates the need for complex real-time resource allocation decisions, reducing resource allocation complexity while ensuring multiple reliable transmission opportunities are available.
3Productivity
If distinct time or slot allocation is ensured for target PRACH resources, then the transmission efficiency is improved, but the resource management complexity increases
Solution Approach 1:
The patent applies local quality by ensuring that specific PRACH resources have the local quality attribute of distinct time or slot allocation. This localized differentiation in resource characteristics enables efficient repeated transmissions without requiring complex global resource management, as only the specific PRACH resources need to satisfy the distinct allocation requirement.
Data Source
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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.