METHOD FOR SETTING UP SLEEP INTERVAL IN A BROADBAND WIRELESS CONNECTION COMMUNICATION SYSTEM, CONCERNED WITH CONTROLLING A SLEEP MODE AND AN AWAKE MODE IN A BROADBAND WIRELESS CONNECTION COMMUNICATION SYSTEM WHICH USES AN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING METHOD

摘要

PURPOSE: A method for setting up a sleep interval in a broadband wireless connection communication system is provided to reduce frequency of unnecessary wakening in an awake mode by setting up a sleep interval by various methods in a sleep mode and an awake mode of a broadband wireless connection communication system, thereby efficiently managing power consumption. CONSTITUTION: A subscriber station in a sleep mode receives a traffic indication message from a base station in an awake mode in a state that a sleep interval is set as a maximum window(715,717,719). If the subscriber station receives a negative signal through the traffic indication message, the subscriber station and the base station are transited to the sleep mode, maintaining the maximum window of the previous sleep interval(721,723,725). The subscriber station is transited to the awake mode to confirm the traffic indication message again(727). If receiving a negative signal, the subscriber station is transited to the sleep mode again, maintaining the maximum window(729,731,733).