Random Access Configuration via Bandwidth Part Selection
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Solution Overview
Problem
In wireless communication networks, devices face challenges in determining the appropriate random access channel configuration for efficient communication, leading to inefficiencies in resource allocation and access procedures.
Innovation Solution
The implementation of a method that involves receiving a system information message associated with a synchronization signal block, which includes a first random access channel configuration, and a radio resource control message indicating a bandwidth part configuration based on a second random access channel configuration, allowing for a contention-free random access procedure to be performed on the bandwidth part.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a device uses a first random access channel configuration from system information message, then initial access is enabled, but resource allocation efficiency deteriorates when bandwidth part configuration with second random access channel configuration is available
Solution Approach 1:
The patent implements dynamic selection between first and second random access channel configurations based on device state and network conditions. The device transitions from using the first configuration (for initial access) to the second configuration (for optimized resource allocation) when appropriate, making the system adaptive rather than static.
Solution Approach 2:
The patent changes the random access channel configuration parameter from the first configuration to the second configuration based on bandwidth part configuration reception. This parameter change enables the device to optimize resource allocation while maintaining access capability.
2Adaptability or versatility
If multiple random access channel configurations are supported, then adaptability improves, but device complexity increases
Solution Approach 1:
The patent introduces the second random access channel configuration as an intermediary layer between the device and the network for optimized resource allocation. This intermediary configuration simplifies the device's decision-making process by providing clear guidance from the network on which configuration to use, rather than requiring complex autonomous decisions.
Solution Approach 2:
The network provides the second random access channel configuration in advance through system information messages or RRC messages, allowing the device to prepare and switch configurations proactively. This preliminary provision of configuration options reduces the complexity of real-time configuration management.
3Productivity
If contention-free random access procedure is implemented on bandwidth part, then access efficiency improves, but resource allocation complexity increases
Solution Approach 1:
The patent applies contention-free random access specifically to the bandwidth part with the second configuration, creating a localized optimized access path. This local quality enhancement allows efficient access for bandwidth part-related operations without requiring all random access procedures to be complex.
Data Source
AI summary
Apparatuses, methods, and systems are disclosed for random access configuration. One method includes receiving a first cell-defining synchronization signal block on a carrier. The method includes synchronizing to the first cell-defining synchronization signal block. The method includes receiving a first system information message associated with a first serving cell of the first cell-defining synchronization signal block. The first system information message includes a first random access channel configuration. The method includes receiving a bandwidth part configuration via a dedicated message from the first serving cell that indicates a bandwidth part configured with a second random access channel configuration. The method includes performing random access according to the second random access channel configuration in the bandwidth part of the first serving cell.