Random Access Reporting Thresholds for Two-Step and Four-Step Access
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge of controlling random access problem reporting in mobile communication systems, particularly when a terminal device's uplink bandwidth part supports either two-step or both two-step and four-step random access, is not adequately addressed in existing technologies.
Innovation Solution
A method and terminal device are provided to determine a random access attempt threshold based on the supported access type, and to decide on reporting a random access problem based on the relationship between the number of access request transmissions and the threshold, including specific schemes for two-step and four-step random access scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device always reports random access problem regardless of access type, then the network can obtain comprehensive access failure information, but unnecessary signaling overhead increases and system efficiency decreases
Solution Approach 1:
The patent changes the reporting behavior parameter based on the random access type parameter. When the access type is two-step random access, the terminal determines whether to report based on comparing the number of attempt transmissions against a threshold. When the access type is four-step random access, the terminal always reports the problem. This dynamic parameter adjustment resolves the contradiction by adapting reporting behavior to the specific access scenario.
2Speed
If the terminal device uses two-step random access to reduce time delay, then access speed improves, but the ability to handle diverse random access scenarios decreases
Solution Approach 1:
The patent implements dynamic selection between two-step and four-step random access procedures based on network configuration and current access conditions. The terminal device can adaptively choose the appropriate access type, making the system dynamic rather than static. This resolves the contradiction by allowing the system to optimize for speed when conditions permit while maintaining versatility to handle diverse scenarios.
Solution Approach 2:
The patent designs the random access mechanism to support both two-step and four-step procedures within the same system. The terminal device and network are configured to handle multiple access types universally, allowing the system to function effectively regardless of which specific access type is used. This multi-functionality resolves the contradiction between speed optimization and scenario adaptability.
3Measurement precision
If the terminal device reports random access problem for every failure, then the network can accurately detect access issues, but the reporting complexity and processing overhead increase
Solution Approach 1:
The patent applies different reporting quality levels to different random access types. For two-step random access, reporting is conditional and threshold-based, providing localized optimization for this specific access type. For four-step random access, reporting is always performed, ensuring comprehensive detection for that scenario. This local quality differentiation resolves the contradiction between detection accuracy and reporting complexity.
Data Source
Figure 1~3
Figure 4~7
Figure 8~12
AI summary
Disclosed is a random access problem reporting method, comprising: a terminal device determining a random access attempt threshold value according to a random access type supported by an uplink bandwidth part; and when the terminal device fails in random access, the terminal device determining, according to the relationship between the number of instances of sending a random access request and the random access attempt threshold value, whether to report a random access problem. Further disclosed are a terminal device and a storage medium.