Dynamic Access Control for 5G IoT Random Congestion
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Solution Overview
Problem
In the 5G IoT era, random access resource congestion occurs in cells when a large number of IoT terminals initiate requests simultaneously, particularly in scenarios like remote meter reading and shared bike updates, due to limited bandwidth at low frequencies.
Innovation Solution
A control method that transmits a first limit value for load control, congestion control, and access control, dynamically configured based on network load and random access requests, to manage terminal access requests, using algorithms like one-way functions to determine second limit values for resource management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If low frequency bands (800-900 MHz) are used to provide wide coverage for IoT services, then coverage area is improved, but bandwidth is limited causing resource congestion when many terminals access simultaneously
Solution Approach 1:
The patent dynamically adjusts the first limit value parameter based on network load conditions, random access request quantities, and time windows. This parameter change mechanism allows the system to adapt the access control threshold to current network state, resolving the contradiction between maintaining wide coverage and preventing resource congestion by intelligently modulating access limitations.
2Adaptability or versatility
If multiple IoT terminals initiate random access requests simultaneously in high-density scenarios, then service accessibility is improved, but random access resource congestion occurs
Solution Approach 1:
The network device monitors the quantity of random access requests within time windows and uses this feedback to dynamically adjust the first limit value. When request quantity exceeds thresholds, the system increases limiting; when below thresholds, it relaxes limits. This feedback loop maintains service accessibility while preventing resource congestion and ensuring reliable random access.
Solution Approach 2:
The patent transforms static access control into a dynamic system where the first limit value changes based on real-time network conditions, terminal quantities, and load states. This dynamic adjustment allows the system to accommodate varying service accessibility requirements while maintaining resource reliability under different traffic conditions.
3Productivity
If the first limit value is configured dynamically based on network load and access request quantities, then random access control efficiency is improved, but system complexity increases
Solution Approach 1:
The system pre-configures threshold values for random access request quantities and defines time window parameters in advance. These preliminary settings provide a framework that guides dynamic adjustments without requiring complex real-time calculations, thereby improving control efficiency while limiting the increase in system complexity to manageable levels.
Data Source
AI summary
The present disclosure provides a control method, a network device, and a terminal. The control method includes transmitting a first limit value for at least one of load control, congestion control and access control.