Patent ID: 7630702

Claim:
A method of supporting sleep mode of a mobile station (MS) in a broadband wireless access system, the method comprising: receiving, from a MS network control management system (NCMS), a first primitive that indicates a sleep request; sending, to the MS NCMS, a second primitive that indicates a sleep confirmation after sending, to a network, a sleep request message and receiving, from the network, a sleep response message; sending, to the MS NCMS, a third primitive that indicates whether there is traffic or not, in response to receiving, from the network, a traffic indication message; receiving, from the MS NCMS, a fourth primitive that indicates a sleep start request; and sending, to the MS NCMS, a fifth primitive that indicates a result of the sleep start request, wherein the result indicates success or failure of the sleep start request, wherein the fourth primitive comprises an action code, the action code indicating maintain normal status or start sleep status.