Patent ID: 8605634
Filing Date: 2013-12-10
Classification: H04W,Y02D

Abstract:
1. A method of controlling a coordinator for use in a wireless network including stations, the stations having an awake state to receive or transmit information and a sleep state to save power, the method comprising: transmitting a beacon signal to the stations during a beacon period, wherein the coordinator is placed in an awake state during the beacon period; receiving a message from at least one of the stations during a predetermined period, the predetermined period indicating a timeslot allocated between the beacon period and next beacon period and being able to receive data from the at least one of the stations; checking whether the received message is awake information for requesting a wake-up of the coordinator; and when the received message is the awake information for requesting the wake-up of the coordinator, maintaining the awake state of the coordinator during the predetermined period, when the received message is not the awake information for requesting the wake-up of the coordinator, changing the awake state of the coordinator to a sleep state.