Terminal Random Access Switching Between 2-Step and 4-Step Modes
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Solution Overview
Problem
The complexity of wireless communication environments requires a more flexible random access process to ensure successful establishment of communication connections between terminal devices and networks.
Innovation Solution
The terminal device selects the random access manner based on various parameters such as current link quality, service information, and historical access data to perform either a 4-step or 2-step random access process, allowing for flexible adaptation to different scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed random access procedure is used, then the process is simple to implement, but it cannot adapt to complex and varying wireless environments
Solution Approach 1:
The patent implements dynamic selection between 2-step and 4-step random access procedures based on real-time assessment of wireless environment conditions. The terminal device evaluates parameters such as signal quality, network configuration, and historical access success rates to dynamically choose the most appropriate access method, transforming the static random access process into an adaptive system that responds to changing environmental conditions.
Solution Approach 2:
The patent changes the operational parameters of the random access procedure by introducing multiple configurable options (2-step vs. 4-step procedures, different preamble formats, varied resource allocation strategies). These parameter variations allow the system to optimize performance for different wireless conditions while maintaining a unified underlying framework, thus improving adaptability without proportionally increasing complexity.
2Loss of time
If a 2-step random access procedure is used, then the access latency is reduced, but the complexity of the access process increases
Solution Approach 1:
The patent prepares both 2-step and 4-step random access procedures in advance, configuring necessary resources and parameters beforehand. The terminal device pre-assesses wireless conditions and pre-selects the appropriate procedure type before actual access is needed. This preliminary preparation reduces the time required during the actual access attempt while avoiding the need to implement complex decision-making logic in real-time.
3Reliability
If random access manner selection is implemented, then the success rate of random access is improved, but the device complexity increases
Solution Approach 1:
The patent implements a feedback mechanism where the terminal device monitors the outcomes of random access attempts and uses this information to inform future selections. By tracking success rates, signal quality metrics, and network responses, the device learns from past experiences and adjusts its random access strategy accordingly. This feedback-driven approach improves success rates while keeping the decision logic relatively simple, as it relies on straightforward performance monitoring rather than complex predictive algorithms.
Data Source
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AI summary
Provided are a method for random access and a terminal device, which can implement a more flexible random access process. The method comprises: a terminal device determining a first random access mode for random access; and the terminal device, according to the first random access mode, performing a random access process.