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US 11,057,802 B2Granted
Wireless client STA roaming
AssigneeNew H3C Technologies Co., Ltd.
InventorShuwei Nie
Life of this patent
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Abstract
A method and a device for roaming a wireless STA are provided. The method and the device may be applied to an access controller (AC) in a wireless local area network. According to an example of the method, an STA of interest to be roamed from a first Access Point (AP) to a second AP is determined and the STA of interest is roamed from the first AP to the second AP by controlling the STA of interest to be switched from a working channel of the first AP to a working channel of the second AP.
Claims14
A method of roaming a wireless Station (STA), comprising:
- determining, by an Access Controller (AC), an STA of interest which is to be roamed from a first Access Point (AP) to a second AP;
- and
- controlling, by the AC, the STA of interest to be switched from a working channel of the first AP to a working channel of the second AP so that the STA of interest is roamed from the first AP to the second AP,
- wherein determining the STA of interest comprises selecting, by the AC, the STA of interest to be roamed to the second AP from STAs currently connected to the first AP, and
- wherein selecting the STA of interest comprises:
- determining, by the AC, a low-associated STA list for the second AP according to Radio Resource Management (RRM) information reported by the second AP, wherein the low-associated STA list for the second AP contains STAs whose signal strengths are detected by the second AP to be smaller than a default signal strength P;
- determining, by the AC, an associated AP list for an STA currently connected to the first AP according to RRM information reported by a plurality of APs in a Wireless Local Area Network (WLAN) to which the AC belongs, wherein the associated AP list for the STA contains APs which detect signal strengths for the STA greater than the default signal strength P;
- and
- determining, by the AC, whether the STA is the STA of interest based on the low-associated STA list for the second AP and the associated AP list for the STA.
6 more elements
A device for roaming a wireless Station (STA), the device being applied to an Access Controller (AC) and comprising:
- a selecting module to determine an STA of interest which is to be roamed from a first Access Point (AP) to a second AP;
- a controlling module to control the STA of interest to be switched from a working channel of the first AP to a working channel of the second AP so that the STA of interest is roamed from the first AP to the second AP;
- and
- a list processing module to determine:
- a low-associated STA list for the second AP according to Radio Resource Management (RRM) information reported by the second AP, wherein the low-associated STA list for the second AP contains STAs whose signal strengths are detected by the second AP to be smaller than a default signal strength P;
- and
- an associated AP list for an STA currently connected to the first AP according to RRM information reported by a plurality of APs in a Wireless Local Area Network (WLAN) to which the AC belongs, wherein the associated AP list for the STA contains APs which detect signal strengths for the STA greater than the default signal strength P,
- wherein the selecting module is to determine whether the STA is the STA of interest based on the low-associated STA list for the second AP and the associated AP list for the STA.
5 more elements
An Access Controller (AC), comprising:
- a non-transitory machine-readable storage medium storing machine-executable instructions;
- and
- a processor configured to execute the machine-executable instructions to:
- determine an STA of interest which is to be roamed from a first Access Point (AP) to a second AP;
- and
- control the STA of interest to be switched from a working channel of the first AP to a working channel of the second AP so that the STA of interest is roamed from the first AP to the second AP,
- wherein determining the STA of interest comprises selecting, by the AC, the STA of interest to be roamed to the second AP from STAs currently connected to the first AP, and
- wherein selecting the STA of interest comprises:
- determining, by the AC, a low-associated STA list for the second AP according to Radio Resource Management (RRM) information reported by the second AP, wherein the low-associated STA list for the second AP contains STAs whose signal strengths are detected by the second AP to be smaller than a default signal strength P;
- determining, by the AC, an associated AP list for an STA currently connected to the first AP according to RRM information reported by a plurality of APs in a Wireless Local Area Network (WLAN) to which the AC belongs, wherein the associated AP list for the STA contains APs which detect signal strengths for the STA greater than the default signal strength P;
- and
- determining, by the AC, whether the STA is the STA of interest based on the low-associated STA list for the second AP and the associated AP list for the STA.
9 more elements
Dependencies are inferred from the claim text.