Apparatus and method for controlling slotted mode of several systems using one sleep controller in a hybrid terminal of a mobile communication system

An apparatus for controlling a slotted mode of several systems using one sleep controller in a hybrid terminal of a mobile communications system comprising:

• at least two system protocol stacks (PSs), used for different communication networks, for generating a sleep request when a sleep condition is satisfied, and processing a wake-up command;
• a hardware block shared by the several systems;
• a sleep controller for turning off a main clock for a sleep interval in response to a sleep/wake-up mode command, driving the main clock in response to a wake-up command, and generating a wake-up interrupt;
• and
• a hybrid sleep controller to enable operation in a virtual sleep mode by turning off a clock of the sleep controller for a real sleep interval and turning off power of the hardware block in response to at least one of a sleep request from a system PS and a presence/absence of a hardware block-waiting system, to enable operation in a real sleep mode, sending an active command to a corresponding system, and simultaneously driving a sleep timer until a time that other systems wake up,
• wherein the hybrid sleep controller manages a wake-up time of the system when the at least one sleep request from the system PS is received.