Patent ID: 7508781
Filing Date: 2009-03-24
Classification: H04W,Y02D

Abstract:
1. A system for saving power in a wireless network, comprising: an access point; one or more stations; and an SIV frame comprising: wherein the access point originates and transmits the SIV frame of the scheduled wake-up time to the one or more stations, wherein the one or more stations selectively awake from a sleep mode for data transmission therewith based on the schedule, wherein at least one of the one or more stations determines whether uplink data is to be transmitted from the at least one of the one or more stations to the access point in response to receiving a beacon indicating an identity of the at least one of the one or more stations, keeping the at least one of the one or more stations awake, the at least one of the one or more stations receives a request from the access point to indicate whether the at least one of the one or more stations has uplink data to be transmitted to the access point, and the at least one of the one or more stations sends to the access point prior to receiving the SIV frame an indication that uplink data is to be transmitted to the access point, and where in the at least one of the one or more stations transmits the uplink data to the access point according to the SIV frame.