Random Access Mode Switching for Low-Collision Network Entry
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Solution Overview
Problem
Wireless communication networks face challenges in selecting the appropriate random access (RA) mode due to varying latency and resource requirements, leading to increased collisions and inefficiencies in uplink resource management.
Innovation Solution
A method for selecting a suitable RA mode by obtaining an impact factor such as a synchronization status between the terminal device and the network device, a channel status, early data transmission capability, predefined access category of the terminal device, or a RA mode-related indication from the network device, and then selecting an appropriate RA mode based on these factors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If quick-mode RA is used to reduce latency, then access speed is improved, but collision probability increases
Solution Approach 1:
The patent implements dynamic RA mode selection that adapts to current network conditions. The terminal device determines synchronization status and channel conditions, then dynamically switches between quick-mode RA and other RA modes. This dynamic adaptation allows the system to use quick-mode RA when conditions are favorable (reducing latency) while avoiding it when collision risk is high, thus resolving the contradiction between speed and reliability.
Solution Approach 2:
The patent employs feedback mechanisms where the terminal device monitors synchronization status, channel conditions, and RA outcomes. Based on this feedback, the device adjusts its RA mode selection strategy. The network device also provides feedback through downlink messages indicating preferred RA modes. This feedback loop enables the system to learn from past collisions and adjust behavior to reduce future collision probability while maintaining fast access when possible.
2Adaptability or versatility
If multiple RA modes are supported simultaneously, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent segments the RA process into distinct modes (quick-mode RA and other RA modes) with clearly defined entry conditions and transition criteria. Each mode has specific synchronization status requirements and channel condition thresholds. This segmentation allows the terminal device to implement multiple RA modes without overwhelming complexity, as each mode can be independently managed with its own decision logic based on monitored parameters.
Data Source
AI summary
Embodiments of the present disclosure relate to selecting random access (RA) mode. In example embodiments, The method comprises obtaining an impact factor associated with RA of a terminal device to a network device, the impact factor indicating at least one of the following: a synchronization status between the terminal device and the network device, a status of a channel between the terminal device and the network device for performing RA, a capability of the terminal device for supporting early data transmission (EDT), a predefined access category of the terminal device, or a RA mode-related indication received from the network device; selecting a RA mode at least in part based on obtained impact factor; and performing RA to the network device with the selected RA mode. In this way, the terminal device may select different RA mode according to different scenario.