Patent ID: 7768966

Claim:
A traffic indication and channel adaptation apparatus for a subscriber station in a sleep mode in a wireless portable internet system, comprising: a channel resource allocator for generating resource allocation information allocating an uplink channel resource to the subscriber station in the sleep mode; a traffic indication and channel adaptation controller for generating a traffic indication (TRF-IND) message transmitted together with the resource allocation information to the subscriber station in the sleep mode, and providing downlink data (user data) having a transmission level determined by applying an adaptive modulation and coding (AMC) according to a channel quality information report message transmitted from the subscriber station in the sleep mode; a transmitter for transmitting the uplink resource allocation information, the traffic indication message, and the downlink data (user data) to the subscriber station in the sleep mode; and a receiver for receiving a channel quality information codeword (CQI Codeword) and a channel quality information report (compressed REP-RSP) message transmitted from the subscriber station in the sleep mode awakened by the traffic indication message.