Abstract: Method, apparatus and computer-accessible medium for monitoring sleep quality of a user are described. For example, using such exemplary Method, apparatus and computer-accessible medium, it is possible to collect body movement signals of the user during sleep, and calculate body movement energy of a preset time-slot, based on the body movement signals collected during the preset time-slot. It is also possible to calculate an estimation threshold of a preset estimation time-span including the preset time-slot, based on body movement energy of preset time-slots which are included in the preset estimated time-span. Further, a determination can be made as to a sleep state of the user based on a comparison between the body movement energy of the preset time-slot and the estimation threshold of the preset estimation time-span. Such exemplary Method, apparatus and computer-accessible medium facilitate a strong adaptive ability and highly reliable sleep monitoring.