Two-Step RACH Load Control via Dynamic Procedure Switching
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Solution Overview
Problem
The high load of two-step Random Access Procedure (2 step RACH) resources in mobile communication systems leads to increased collision probability and access delay, as many users utilize the pre-configured resources, causing resource overload.
Innovation Solution
A load control method and apparatus that dynamically switches terminals from a two-step random access procedure to a four-step procedure by sending configuration parameters and indication information, allowing network devices to manage resource usage and prevent overload by instructing terminals to switch based on detected load thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If many users use the two-step random access procedure with pre-configured resources, then access speed is improved, but resource load increases and collision probability increases
Solution Approach 1:
The patent implements dynamic load control by monitoring the load of two-step RACH resources and dynamically adjusting the configuration parameters broadcast to terminals. When load exceeds a threshold, the network device dynamically changes the parameter to instruct terminals to switch to four-step RACH, thereby dynamically balancing access speed and resource load.
Solution Approach 2:
The patent changes the configuration parameter (e.g., a flag or indicator in system broadcast messages) to control terminal behavior. By modifying this parameter, the network device can switch terminals between two-step and four-step RACH procedures, effectively managing resource load while maintaining access efficiency.
2Speed
If many users use the two-step random access procedure with pre-configured resources, then access speed is improved, but collision probability increases
Solution Approach 1:
The patent implements a feedback mechanism where the network device monitors collision probability and resource load metrics, then uses this feedback information to adjust configuration parameters broadcast to terminals. This closed-loop control reduces collision probability by dynamically adapting resource allocation based on actual system conditions.
3Productivity
If the network device monitors and controls two-step RACH resource load, then resource management efficiency is improved, but system complexity increases
Solution Approach 1:
The patent enables terminals to autonomously determine their access procedure (two-step or four-step RACH) based on configuration parameters received from the network. This self-service approach reduces network device complexity while maintaining efficient resource management, as terminals make local decisions based on broadcast information.
Data Source
AI summary
Embodiments of the present application provide a load control method and apparatus, a network device and a terminal, including: sending, by a network device, a system broadcast message, where the system broadcast message includes a first configuration parameter, and the first configuration parameter is used to control whether a terminal performs a two-step random access procedure.