Methods and devices for coordinating the transmissions of access points in WLANs
US7477610B2 · kind B2 · utility
5Cited by
0References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2004 |
| Grant date | Jan 13, 2009 |
| Priority date | — |
| Expiry date | Aug 2, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/08
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The coordination of transmissions by access points (APs) in a wireless local area network (WLAN) is carried out by allowing APs to transmit during slots of a Contention Free Period (CFP). Prior to transmission, slots are assigned to APs using a 4-approximation technique. This technique allows an AP to transmit using multiple frequencies. The assignment of slots satisfies a maximal, lower bound of an AP slot-to-user ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.