WLAN DEVICE AND CHANNEL SCANNING METHOD
First Claim
1. A wireless local area network (WLAN) device located in a WLAN with a plurality of wireless channels, the WLAN device comprising:
- one or more processors;
a storage system; and
one or more programs, wherein the one or more programs are stored in the storage system and executed by the one or more processors, the one or more programs comprising;
a channel scanning module operable to actively scan a first wireless channel of the WLAN and wait for a first scanning result of the first wireless channel for a first waiting time period; and
a time extending module operable to transmit a first time extending frame to the first wireless channel to extend the first waiting time period;
wherein the channel scanning module further actively scans a second wireless channel of the WLAN within the first waiting time period, and waits for a second scanning result of the second wireless channel for a second waiting time period;
wherein the time extending module further transmits a second time extending frame to the second wireless channel to extend the second waiting time period.
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Abstract
A wireless local area network (WLAN) device actively scans a first wireless channel, waits for a first scanning result of the first wireless channel for a first waiting time period, and transmits a first time extending frame to the first wireless channel to extend the first waiting time period. The WLAN device further actively scans a second wireless channel within the first waiting time period, waits for a second scanning result of the second wireless channel for a second waiting time period, and transmits a second time extending frame to the second wireless channel to extend the second waiting time period. The WLAN device receives the first scanning result from the first wireless channel, and then receives the second scanning result from the second wireless channel, after the WLAN device actively scans the first and second wireless channels.
11 Citations
18 Claims
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1. A wireless local area network (WLAN) device located in a WLAN with a plurality of wireless channels, the WLAN device comprising:
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one or more processors; a storage system; and one or more programs, wherein the one or more programs are stored in the storage system and executed by the one or more processors, the one or more programs comprising; a channel scanning module operable to actively scan a first wireless channel of the WLAN and wait for a first scanning result of the first wireless channel for a first waiting time period; and a time extending module operable to transmit a first time extending frame to the first wireless channel to extend the first waiting time period; wherein the channel scanning module further actively scans a second wireless channel of the WLAN within the first waiting time period, and waits for a second scanning result of the second wireless channel for a second waiting time period; wherein the time extending module further transmits a second time extending frame to the second wireless channel to extend the second waiting time period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A channel scanning method applied in a wireless local area network (WLAN) with a plurality of wireless channels, the channel scanning method comprising:
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actively scanning a first wireless channel of the WLAN and waiting for a first scanning result of the first wireless channel for a first waiting time period; transmitting a first time extending frame to the first wireless channel to extend the first waiting time period; actively scanning a second wireless channel of the WLAN within the first waiting time period and waiting for a second scanning result of the second wireless channel for a second waiting time period; transmitting a second time extending frame to the second wireless channel to extend the second waiting time period; and executing the step of actively scanning the first wireless channel, the step of transmitting the first time extending frame, the step of actively scanning the second wireless channel, and the step of transmitting the second time extending frame using at least one processor. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification