WLAN Roaming Steering Using Model-Specific Handover Conditions
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Solution Overview
Problem
The existing roaming steering methods in wireless local area networks (WLANs) have a low success rate due to varying roaming rules among different terminal models, leading to inconsistent terminal behavior during handovers between basic service sets (BSSs) within an extended service set (ESS).
Innovation Solution
A method where an access point device determines a reference roaming steering condition by performing multiple tests on terminals of a known model, using model identifiers or MAC addresses to tailor steering instructions, and an access control device provides corresponding conditions to improve compliance and success rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a first access point device sends a BTM packet to steer a target terminal to roam to reference access point devices based on signal strength, then roaming steering is performed, but the roaming steering success rate is low because terminals of different models follow different roaming rules and do not unconditionally obey steering instructions
Solution Approach 1:
The access control device performs roaming steering tests on reference terminals of each model beforehand to determine model-specific roaming steering conditions. These pre-determined conditions are then used to guide steering decisions for actual terminals of the same model, avoiding trial-and-error steering and improving success rate by anticipating terminal behavior patterns.
Solution Approach 2:
The system determines different roaming steering conditions for different terminal models by conducting tests and analyzing model-specific behaviors. These conditions include model-specific parameters such as signal strength thresholds, roaming triggers, and decision criteria that are tailored to each terminal model's characteristics, making the steering instructions more compatible with the terminal's inherent roaming rules.
2Measurement precision
If roaming steering tests are performed on reference terminals to determine model-specific conditions, then steering accuracy improves, but system complexity and testing overhead increase
Solution Approach 1:
The access control device serves multiple functions: it manages access point devices, performs roaming steering tests on reference terminals, determines model-specific roaming conditions, and distributes these conditions to access points. By consolidating these functions in a single controller, the system achieves high measurement precision without proportionally increasing overall system complexity.
Solution Approach 2:
The system uses reference terminals as copies or representatives of actual terminal models. By performing tests on these reference terminals and capturing their roaming behaviors, the system creates a simplified model of terminal roaming patterns that can be applied to all terminals of the same model, reducing the need for extensive individual terminal testing.
Data Source
AI summary
This application discloses a roaming steering method, an apparatus, a device, a storage medium, and a system. In this application, a reference roaming steering condition is determined by an access control device by performing, for a plurality of times, a roaming steering test on one or more terminals belonging to a reference model, and the reference model is a model of a target terminal. Therefore, the reference roaming steering condition is similar to a roaming rule in the target terminal. In this case, when a first access point device obtains the reference roaming steering condition and determines that the target terminal satisfies the reference roaming steering condition, even if the target terminal does not unconditionally obey roaming steering of the first access point device, there is a high probability that the target terminal is successfully steered to roam.