Random Access Mode Selection via Dynamic RSRP Thresholds

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

The likelihood of collision and system access failure increases during random-access procedures due to many users accessing with one mode, leading to a decrease in resource utilization rate.

Innovation Solution

A method for access optimization by adjusting the RSRP threshold based on access event parameters, allowing terminal devices to select appropriate random access modes, thereby controlling the number of devices in each mode and optimizing resource allocation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a fixed RSRP threshold is used for random access mode selection, then the configuration is simple, but the collision likelihood increases and resource utilization rate decreases

Engineering Contradiction:

Improvethreshold configuration complexityVSAvoidaccess success rate

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The RSRP threshold is transformed from a fixed static value to a dynamic adjustable parameter. The base station dynamically adjusts the RSRP threshold based on the number of users selecting each random access mode, allowing the system to adapt to changing traffic conditions and user distributions, thereby reducing collisions and improving access success rate

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

A feedback mechanism is established where the base station monitors the number of users selecting two-step and four-step random access modes, compares these numbers against preset thresholds, and adjusts the RSRP threshold accordingly. This closed-loop feedback enables the system to self-optimize and maintain balanced user distribution across access modes

Inventive Principle:

Principle #23Feedback

2Ease of operation

If too many users access with one random access mode, then the access procedure is simplified, but the collision likelihood increases and system access failure rate increases

Engineering Contradiction:

Improveaccess procedure simplicityVSAvoidaccess success rate

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The system changes the RSRP threshold parameter to control user distribution across different random access modes. By adjusting this parameter, the base station can influence user selection behavior to achieve a more balanced distribution, preventing excessive concentration in one mode and reducing collision probability

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentEP4203599B1Access optimization methods, computer-readable storage medium and computer program

Publication Date: 2026.03.18 ZTE CORP

Figure 1~2
Figure 3~8
Figure 9~14

AI summary

An access optimization method, a base station, a terminal, and a computer-readable storage medium, the access optimization method comprising that: the base station sends to the terminal an SSB signal that carries an RSRP threshold (S100); then, the base station acquires an access event parameter for the terminal to access the base station on the basis of the RSRP threshold (S200); afterwards, the base station adjusts the RSRP threshold according to the access event parameter and a preset parameter (S300), and sends to the terminal the SSB signal that carries the adjusted RSRP threshold, so that according to the adjusted RSRP threshold, the terminal selects a random access mode for accessing the base station (S400).