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US 9,072,018 B2Granted
Wireless channel switching using co-located radios
AssigneeHewlett-Packard Development Company, L.P.
InventorsPuneet Sharma, Sung-Ju Lee, Jeongkeun Lee
Life of this patent
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Abstract
A channel management system in a wireless network includes a master radio and a surrogate radio. The master radio performs data communication with one or more clients on a first channel in the wireless network, and the surrogate radio simultaneously scans other channels in the wireless network. A channel manager determines if a channel switch is needed, and the data communication is switched to a second channel based on the scanning of the other channels.
Claims20
A channel management system in a wireless network comprising:
- a master radio to perform data communication with one or more clients on a first channel in the wireless network;
- a surrogate radio co-located with the master radio and to scan other channels in the wireless network simultaneously with the data communication performed by the master radio;
- and
- a channel manager to determine if a channel switch is needed based on the scanning by the surrogate radio, and, in response to a determination that the channel switch is needed, switch the data communication with the one or more clients from the first channel to a second channel of the other channels,
- wherein, to switch the data communication with the one or more clients from the first channel to the second channel, the channel manager is to:
- operate the surrogate radio as the master radio to communicate with the one or more clients via the second channel, including connecting the surrogate radio to the second channel to wait for the one or more clients, and allowing the surrogate radio to perform the data communication with the one or more clients on the second channel when the one or more clients migrates from the first channel to the second channel, and
- operate the master radio as the surrogate radio to scan channels other than the second channel in the wireless network.
4 more elements
An access point to send and receive data to and from one or more clients in a wireless network, the access point comprising:
- a master radio to perform data communication with the one or more clients on a first channel in the wireless network;
- a surrogate radio to scan other channels in the wireless network simultaneously with the data communication performed by the master radio;
- and
- a channel manager to determine if a channel switch is needed based on the scanning by the surrogate radio, and, in response to a determination that the channel switch is needed, switch the data communication with the one or more clients from the first channel to a second channel of the other channels,
- wherein, to switch the data communication with the one or more clients from the first channel to the second channel, the channel manager is to:
- operate the surrogate radio as the master radio to communicate with the one or more clients via the second channel, including connecting the surrogate radio to the second channel to wait for the one or more clients, and allowing the surrogate radio to perform the data communication with the one or more clients on the second channel when the one or more clients migrates from the first channel to the second channel, and
- operate the master radio as the surrogate radio to scan channels other than the second channel in the wireless network.
4 more elements
A method of channel switching in a wireless network, the method comprising:
- performing data communication, by a processor, between a master radio and one or more clients on a first channel in the wireless network;
- scanning, by the processor, other channels in the wireless network using a surrogate radio co-located with the master radio, wherein the scanning is performed simultaneously with the data communication;
- determining if a channel switch is needed based on the scanning by the surrogate radio;
- and
- in response to a determination that the channel switch is needed, switching, by the processor, the data communication with the one or more clients from the first channel to a second channel of the other channels, by
- operating the surrogate radio as the master radio to communicate with the one or more clients via the second channel, including connecting the surrogate radio to the second channel to wait for the one or more clients, and allowing the surrogate radio to perform the data communication with the one or more clients on the second channel when the one or more clients migrates from the first channel to the second channel, and
- operating the master radio as the surrogate radio to scan channels other than the second channel in the wireless network.
4 more elements
Dependencies are inferred from the claim text.