Random Access Uplink Subband Selection for Lower Access Delay
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Solution Overview
Problem
Current wireless communication systems face delays in random access procedures by terminal devices, particularly in scenarios involving uplink synchronization.
Innovation Solution
The implementation of random access using first information related to a first uplink subband or first terminal, which includes specific RACH configurations and power adjustment parameters, to reduce delays in the random access process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If random access is performed using conventional methods, then terminal devices can achieve uplink synchronization with network devices, but access delays occur reducing efficiency
Solution Approach 1:
The patent segments the random access procedure into multiple independent parts: uplink subband selection, RACH occasion identification, and message transmission. By dividing the access process into discrete selectable components, the terminal can efficiently navigate to appropriate resources without exhaustive searching, reducing access delay while maintaining synchronization capability.
Solution Approach 2:
The patent implements preliminary configuration of RACH resources and uplink subband associations before random access occurs. The network pre-configures multiple uplink subbands with associated RACH occasions, allowing terminals to immediately select from available resources when access is needed, eliminating setup delays and improving access efficiency.
2Adaptability or versatility
If multiple RACH resources are configured for different uplink subbands, then resource availability increases enabling faster access, but device complexity increases
Solution Approach 1:
The patent creates a universal RACH resource configuration framework where the same RACH occasion can serve multiple uplink subbands. A single RACH resource is configured with associations to multiple uplink subbands, allowing one resource to fulfill multiple access functions. This multi-functionality increases resource availability without proportionally increasing configuration complexity.
Solution Approach 2:
The patent uses copying mechanisms where RACH resource configurations are replicated across different uplink subbands with modified associations. Instead of creating entirely unique resources for each subband, the system copies base RACH configurations and links them to different subbands, reducing the overall configuration burden while maintaining diverse resource availability.
Data Source
AI summary
The present application provides a wireless communication method, a terminal device, and a network device. The wireless communication method includes: executing, by a terminal device, random access by using first information, where the first information is related to a first uplink subband, or the first information is related to a first terminal.