Method of scanning for beacon transmissions in a WLAN
US7224970B2 · kind B2 · utility
59Cited by
8References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2004 |
| Grant date | May 29, 2007 |
| Priority date | — |
| Expiry date | Dec 20, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A wireless station (114) is within range of more than one access point (120, 124) transmitting on the same channel. The wireless station is associated with one access point and not the other. Consequently the wireless station may receive undesired beacons (304) and desired beacons (302) on the channel. To optimize power save operation the wireless station arbitrates between a scan and shut down scanning procedure (708) and a timed window channel scanning procedure (724), depending on whether the desired beacon is the first received beacon upon waking up from a low power state at a target beacon time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.