Patent ID: 7330445

Claim:
A wireless communication system, comprising: a master apparatus for calculating a sniff parameter including a time of a sniff period capable of performing a communication by allowing a corresponding device to commonly use the time in a sniff mode when a communication mode for mutual data transmission is selected by a user to be operated in the sniff mode; and one or more sniff slave apparatuses for performing the mutual data transmission with the master apparatus by commonly using the time calculated in accordance with the sniff parameter, wherein the master apparatus performs a communication scheduling for data communication of the one or more sniff slave apparatuses, when the sniff parameter is calculated, and wherein the master apparatus comprises: a parameter storage unit for storing the sniff parameter; a time counting unit for allowing the master apparatus to count a time during an allocated time of a sniff period according to the sniff mode based on an operation time in regard to the sniff mode included in the sniff parameter; and a controller for controlling the data communication with the one or more sniff slave apparatuses, and counting a number of the one or more sniff slave apparatuses operated in the sniff mode to perform the communication scheduling.