| US 7,477,616 B2 | ||
| Power saving frame transmission method | ||
| Huayan Amy Wang, Hauppauge, N.Y. (US); and William Sakoda, East Setauket, N.Y. (US) | ||
| Assigned to Symbol Technologies, Inc., Holtsville, N.Y. (US) | ||
| Filed on Jan. 31, 2005, as Appl. No. 11/47,100. | ||
| Prior Publication US 2006/0171341 A1, Aug. 03, 2006 | ||
| Int. Cl. G04C 17/00 (2006.01) | ||
| U.S. Cl. 370—311 [370/328; 370/338; 713/323; 455/574] | 16 Claims |
| 1. A system, comprising:
wireless computing stations, each of the stations utilizing a power save mode and a wake mode; and
an access point transmitting a wireless signal including schedule data on a wireless communication channel, the schedule data
indicative of a service period start time and a service period interval for each of the stations,
wherein each of the stations switch from the power save mode to the wake mode at a corresponding service period start time
and remain in the wake mode for a corresponding service period interval, and
wherein, during the corresponding service period interval, each of the stations communicates frames with the access point,
wherein a wireless medium is maintained in an idle state during a time prior to an initiation of the service period, and
wherein the wireless medium is maintained idle in a contention-free mode of operation of the system.
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