Method of supporting sleep mode in broadband wireless access system

The invention relates to a method to support the transition to the MS stack (stack) within the primitive (primitive) and a base station stack in an idle mode of a mobile terminal in a BWA system by clearly defining the primitives in at effectively. Sleep mode supporting method in a BWA system according to the present invention, in the sleep mode support method in a broadband wireless access system, by passing the first primitive to a lower layer of the MAC layer in the upper management entities of the UE requests the sleep mode instructing a; Further comprising: a MAC layer of the terminal by transmitting a sleep request message to the base station needs to switch to a sleep mode; Receiving a sleep response message from the base station; And it is characterized by configured by comprising the step of entering sleep mode in accordance with the instruction content of the sleep response message. Broadband, wireless connections, mobile terminals, primitive, the sleep mode,