Abstract: A system is provided for transmitting/receiving downlink resource allocation information in a communication system. In the system, a base station generates first information including downlink resource allocation information necessary for supporting a first mode supported by the base station, generates second information including length information of the first information, and transmits the first information and the second information. A mobile station notifies the base station of a second mode supported by the mobile station, receives, after the notification, the first information and the second information from the base station, and skips without decoding as much downlink resource allocation information as a length corresponding to the length information without decoding, if the first mode is different from the second mode.

Abstract: A method is provided for reducing power consumption of a mobile station (MS) in a wireless communication system. If a period of time for state transition from a normal mode to a sleep mode or an idle mode expires, the MS transmits a request message for state transition to a corresponding operation mode to a base station (BS) with which the MS is currently communicating. Upon receiving a response message to the request message, the MS performs a state transition to the sleep mode or the idle mode. Upon detecting a change in service area in the sleep mode, the MS performs a state transition to the normal mode. Upon receiving a paging advertisement message from a corresponding BS in the idle mode, the MS performs a state transition to the normal mode.

Abstract: Disclosed is a system and a method for provisioning service flows in broadband wireless access communication. In a broadband wireless access communication system, if a base station receives a registration request message from a mobile station, and if the base station inserts information about service flows to be provisioned by a base station into a registration response message and transmits the registration response message to the mobile station after the registration request message is received, the mobile station determines if the mobile station transits into a normal operation mode corresponding to the information and exactly recognizes a time point at which the mobile station goes into the normal operation mode.

Abstract: Disclosed is a system and method for transmitting and receiving hybrid automatic repeat request (HARQ) buffer capability information in a broadband wireless access communication system. According to the system and method, a mobile station detects its own HARQ buffer capacity, and transmits a message including information about the detected HARQ buffer capability to a base station. The base station receives the message and determines the amount of a transmission signal to be allocated to the mobile station based on the HARQ buffer capability, so that it is possible to operate a HARQ scheme in accordance with the HARQ buffer capability of the mobile station.

Abstract: Disclosed are methods for transmitting/receiving a traffic indication message in a wireless communication system. In the wireless communication system, a base station (BS) groups a plurality of sleep mode IDs, and broadcasts a traffic indication message that includes first bitmap information indicating whether traffic corresponding to respective the sleep mode ID groups exists as well as second bitmap information indicating whether traffic indicators with respect to the respective sleep mode IDs that belong to the sleep mode ID groups exists. A mobile subscriber station (MS) which is allocated with any one of the plurality of sleep mode IDs, determines whether the traffic occurs in the sleep mode ID group to which the MS itself belongs using the first bitmap information if the MS receives the traffic indication message, and checks the traffic indicator of the terminal itself using the second bitmap information if the traffic occurs in the sleep mode ID group to which the MS belongs.

Abstract: An apparatus and method for re-transmitting data in a wireless access communication system are disclosed. The data retransmission method in a wireless access communication system performing a data transmission/reception operation between a terminal and a base station using ARQ (Automatic Repeat Request) includes the step of transmitting allocation information for bandwidth for data retransmission with respect to data received by the base station and ARQ feedback information according to an error which is included in the received data from the base station to the terminal, and re-transmitting the data in which the error had occurred through the allocated bandwidth based on the allocation information of the bandwidth for the data retransmission from the terminal to the base station.

Abstract: Disclosed is a method for transmitting and receiving MAC PDUs in a broadband wireless communication system. A transmitter generates a MAC PDU and determines if an empty area exists in the PDU. If the empty area exists, the transmitter determines if there exists a complete SDU for transmission having a size that is less than or equal to the size of the empty area. If the complete SDU exists, the transmitter adds into the PDU as a last payload piece the SDU without a subheader, and sets a GMH of the PDU to indicate that a No Overhead Last complete SDU (NOLS) exists, and transmits the PDU. A receiver analyzes a GMH of a received MAC PDU and determines if an NOLS exists in the PDU. If the NOLS exists, the receiver sequentially monitors the PSHs in the PDU to detect the last PSH, and separates an SDU corresponding to the NOLS from the PDU with reference to the last PSH.

Abstract: A method for improving the data processing speed in a mobile communication system employing a High Speed Downlink Packet Access (HSDPA) is provided. A data unit for the HSDPA services is generated by adding a field for identifying a destination logical channel to the header of the data unit and inserting a header padding field into the header, and transmitting the generated data unit.

Abstract: A method for improving the data processing speed in a mobile communication system employing a High Speed Downlink Packet Access (HSDPA) is provided. A data unit for the HSDPA services is produced by inserting a header padding field into a header of the data unit, and transmitting the produced data unit.

Abstract: Disclosed is a method for selecting transport formats corresponding to transport channels in a wideband code division multiple access mobile communication system.

Abstract: Disclosed is a process for processing an MAC-hs PDU (Protocol Data Unit) in an HSDPA (High Speed Downlink Packet Access) communication system, transmitting at least one PDU (Protocol Data Unit) received over a physical (PHY) layer to an MAC (Media Access Control) layer in an HSDPA (High Speed Downlink Packet Access) communication system, includes an HS-DSCH (High Speed-Downlink Shared Channel) decoder for decoding the PDU at intervals of a first period during which the PDU is received from the PHY layer, and storing the decoded PDU in a first memory; a second memory for storing a control table containing position and number information of the PDU, and performing a reordering queue operation on the basis of the position and number information of the PDU; an HSDPA (High Speed Downlink Packet Access) controller for reading the PDU from the first memory, storing the read PDU in the second memory, monitoring the second memory during a second period which is longer than the first period, updating the number of PDUs

Abstract: A method for processing PDUs (Protocol Data Units) in a receiver, which can receive a PDU to which a TSN (Transmission Sequence Number) is allocated from a transmitter provided in an HSDPA (High-Speed Downlink Packet Access) communication system and store the received PDU in a reordering buffer. A receiver window size associated with the received PDU is set. When a sum of a TSN of the PDU at an upper edge of the receiver window and a value of the set receiver window size is larger than a value of a total TSN size where the TSN of the PDU from the transmitter is outside the receiver window, a corresponding PDU is allowed to be appropriately received if a TSN of the corresponding PDU is within a predetermined range even though the TSN of the corresponding PDU is smaller than the TSN at the upper edge of the receiver window.