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US 8,300,613 B2Granted
Techniques for detecting beacons on wireless channels
AssigneeIntel Corporation
InventorsJing Zhu, Ofer Markovits
Life of this patent
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Abstract
A wireless local access network (WLAN) radio listens for a beacon for a listening duration on each of multiple channels. Periodically, the WLAN radio changes the channel on which the WLAN radio listens for a beacon. The WLAN radio rotates through all channels until an entire beacon period is listened to. The number of iterations is chosen to minimize the overlap of successive listening durations. The WLAN radio can detect a beacon by detecting an incomplete portion of a beacon.
Claims17
A method comprising:
- permitting a radio to passively scan for a beacon on a first channel;
- permitting the radio to passively scan for a beacon on a second channel;
- identifying a beacon in any channel based in part on an incomplete portion of the beacon, and
- permitting the radio to repeatedly passively scan the first channel for a first time duration until successive first time durations encompass an entire beacon interval.
1 more element
A mobile station comprising:
- an antenna to receive and transmit signals;
- a wireless wide area network radio;
- and
- a wireless local area network radio comprising:
- logic to passively scan a first channel received through the antenna for a first time duration X number of times, wherein the first time duration is less than an entire beacon interval and wherein X is set to reduce overlap between successive passive scans for the first time duration of the same channel, and
- wherein the logic to passively scan a first channel is to repeatedly passively scan the first channel for the first time duration until sequential first time durations encompass an entire beacon interval.
3 more elements
A system comprising:
- an antenna;
- a computer system comprising:
- logic to passively scan a first channel received through the antenna for a first time duration X number of times, wherein the first time duration is less than an entire beacon interval and wherein X is set to reduce overlap between successive passive scans for the first time duration of the same channel;
- a display device communicatively coupled to the computer system to display information received from the computer system, and
- wherein the logic to passively scan a first channel is to repeatedly passively scan the first channel for the first time duration until sequential first time durations encompass an entire beacon interval.
2 more elements
Dependencies are inferred from the claim text.