Abstract: A method and apparatus of allocating a bandwidth request channel (BRCH) in a wireless communication system including a relay station (RS) is provided. At least one first BRCH for a bandwidth request of a mobile station (MS) connected to a base station (BS) and at least one second BRCH for a bandwidth request of the RS are allocated. An opportunity index is assigned to each of the at least one first BRCH and the at least one second BRCH, and the opportunity index assigned to the at least one second BRCH is started after the opportunity index assigned to the at least one first BRCH.

Abstract: Provided are a system and method for controlling virtual private network (VPN) access. The system includes a first VPN gateway, a second VPN gateway, a wireless local area network (WLAN) access control server configured to detect a corporate intranet connection of a wireless communication terminal connecting to a corporate intranet via the first VPN gateway, and a VPN setting change server configured to receive a request to change a VPN setting of the wireless communication terminal from the WLAN access control server and control the wireless communication terminal to change the VPN gateway currently in connection with the wireless communication terminal to the second VPN gateway in accordance with the VPN setting change request.

Abstract: Provided are an operation method for M2M (machine to machine) communication and a device using same. M2M equipment receives a paging message including a resource offset for indicating an offset for uplink allocation. The M2M equipment transmits a ranging request message using the uplink allocation.

Abstract: Provided are an operating method for machine to machine (M2M) communication and an apparatus using the method. In an idle mode, an M2M device receives a paging message from a base station. The paging message comprises a network connection type and a start offset. The network connection type indicates a resource allocation for a ranging request. The start offset indicates an offset at which to start monitoring the ranging resource for the ranging request.

Abstract: A method and apparatus for transmitting uplink (UL) data in a wireless communication system is provided. A machine-to-machine (M2M) device receives a deregistration response message including a transmission type and a maximum number of paging cycle during an idle mode entry, waits to receive a paging message for the M2M device to transmit the UL data during a period corresponding to up to (the maximum number of paging cycle×a length of paging cycle), and transmits the UL data.

Abstract: The present invention relates to a bandwidth request preamble sequence selecting method for bandwidth requests on a wireless access system, and to a random access procedure using the same. Also, the present invention relates to devices supporting the random access procedure. In one example of the present invention, the method for randomly accessing a wireless access system may comprise the steps of: receiving a first message containing a predefined bandwidth request index from a base station; selecting a bandwidth request preamble sequence from the predefined bandwidth request index on the basis if the properties of uplink data to be transmitted by a mobile terminal; transmitting a second message containing a predefined bandwidth request index to the base station; and transmitting the selected bandwidth request preamble sequence to the base station.

Abstract: A method for requesting an emergency service to a base station and a mobile station using the same are disclosed. During initial network entry, a mobile station may transmit an emergency message to a base station using an emergency Flow Identifier (FID), and receive from the base station information about resources allocated according to a default service flow parameter predefined for the emergency service by the base station. The mobile station may transmit to the base station a ranging request message including an emergency service indicator indicating an emergency service request, and receive from the base station a ranging response message including an emergency FID allocated by the BS as a response to the emergency service request. The emergency FID is the emergency FID received in the ranging response message.

Abstract: A method and apparatus for performing a carrier management in a broadband wireless communication system supporting multi-carriers are discussed. According to an embodiment, a method for a mobile station to perform a carrier management procedure with a base station supporting multiple carriers, includes receiving, by the mobile station from the base station, an instruction for a primary carrier change; transmitting, by the mobile station to the base station, an acknowledgement message indicating that the instruction is successfully received; and changing, at a specific time, a current primary carrier to one of the multiple carriers within the base station, wherein the specific time is determined based on the instruction.

Abstract: The mobile station for transceiving signals using a predetermined time division duplex (TDD) frame structure in a wireless communication system includes a receiver for receiving a midamble from a base station (BS), and a relay station (RS). The receiver receives, from the BS, a first midamble through a second subframe of a downlink access zone of the BS and/or through a first subframe of a downlink relay zone that follows the downlink access zone. Alternatively, the receiver receives, from the RS, a second midamble through a second subframe of a downlink access zone of the RS. A transition gap in a downlink region is located in the last subframe of the downlink access zone of the RS, which follows the downlink access zone of the RS, and a transition gap in an uplink region is located in a first subframe of an uplink relay zone of the RS.

Abstract: The present invention relates to a method and apparatus for transmitting and receiving data in a multi-carrier communications system. The data transmission/receiving method uses multiple carriers including a primary carrier that is capable of transmitting and receiving data traffic and PHY/MAC control information between a terminal and a base station and at least one secondary carrier that transmits and receives down-link data traffic between the terminal and the base station.

Abstract: Disclosed are M2M equipment and base station capable of adjusting load through a scheduling delay. M2M equipment according to the present invention may comprise a receiver which receives a first message including a scheduling delay indicator directing the M2M equipment to delay transmission of uplink data from a base station, and a processor for controlling transmission of the uplink data to be delayed in response to scheduling delay direction of the first message.

Abstract: Disclosed are various group resource allocation methods used in a wireless access system. In one example of the present invention, a method for configuring a valid combination set for a resource allocation bitmap comprises the steps of: receiving, from a base station, a super frame header comprising HARQ burst data showing the HARQ burst size candidate set; receiving, from the base station, group configuration map data elements including control data for configuring a valid combination set; and configuring a valid combination set by using the HARQ burst data and the control data.

Abstract: Provided is a communication method implemented by a mobile device in a wireless network in which a plurality of frequency bands is available, wherein a first wireless device and a second wireless device in the wireless network are configured to use a first one and a second one of the plurality of frequency bands, respectively, to provide wireless connections. The method includes: while the mobile device is connected to the second wireless device, receiving a frame which includes information indicating that the first wireless device is configured to use the first frequency band to provide a wireless connection, the frame being transmitted from the first wireless device in the second frequency band and received through a scanning operation performed by the mobile device only on the second frequency band; and allowing a subsequent scanning operation of the mobile device to be performed only on the first frequency band.

Abstract: A communication method implemented in a mobile device is provided. The communication method includes limiting a frequency band on which the mobile device performs a scanning operation to a first frequency band used for a wireless connection of the mobile device; determining whether it is necessary to scan a second frequency band during a subsequent scanning operation of the mobile device; and in response to determining that it is necessary to scan the second frequency band, allowing the subsequent scanning operation to be performed on a plurality of frequency bands including the first and second frequency bands.

Abstract: A method for data traffic offloading in a mobile communication system supporting a multi-radio access technology (RAT) and an apparatus using the method is provided. A mobile station receives information on a traffic load of a primary communication system from a base station. The mobile station determines whether to perform offloading to a secondary communication system on the basis of the traffic load of the primary communication system.

Abstract: Disclosed are: a variety of methods and apparatuses for aggregating a plurality of carriers and using the carrier aggregation in a wireless connection system; and a variety of methods and apparatuses for providing information on the structure of a carrier generated by aggregating a plurality of carriers. A method for transmitting and receiving carrier group information, according to one embodiment of the present invention, includes the steps of: a mobile terminal transmitting a first message containing multi-carrier performance information of the mobile terminal to a base station; and the mobile terminal receiving, from the base station, a second message containing allocation information on the wireless resource allocated on the basis of the multi-carrier information. Here, multi-carrier performance information includes a spectral mask-type parameter for the supportable multi-carrier of the mobile terminal.

Abstract: The present invention relates to a multi-carrier resource utilization method and apparatus for power saving in a communication system using a multi-carrier, in which the activation of a secondary carrier for transmitting and receiving data traffic between a terminal and a base station is determined according to the QoS (Quality of Service) requirements such as a data traffic status between the terminal and the base station, a maximum sustained traffic rate, a maximum traffic burst size, or the like, and an indication message (Indication) indicating this is transferred to the terminal through a primary carrier to transmit and receive data traffic through the activated secondary carrier.

Abstract: A method including receiving a signal from a terminal; measuring channel state information (CSI); comparing the CSI to determine whether to decode the received signal; and if it is determined to decode the received signal, removing noise by decoding the received signal, and then performing decode and forward (DAF) in which the signal is re-encoded, and if it is determined not to decode the received signal, performing amplify and forward (AAF) in which the received signal is amplified. The CSI may be at least one of a frame error rate (FER), a bit error rate (BER), a signal to noise ratio (SNR), and a signal to interference plus noise ratio (SINR). Accordingly, a time delay consumed for channel decoding in hybrid DAF coordinated communication is decreased, data transmission and resource usage is more effectively achieved in coordinated communication using multiple terminals, and unnecessary power consumption is decreased.

Abstract: The present invention relates to a broadband wireless access system, and more particularly, to a method in which a terminal acquires and updates global carrier configuration information of base stations in a network, and to an apparatus for performing the method.

Abstract: The present description relates to a method in which a terminal in an idle mode performs network reentry in a wireless access system, wherein the method comprises: a step of receiving, from a base station, control information containing a first parameter and a second parameter for determining a frame in which uplink ranging is to be performed; and a step of performing uplink ranging for network reentry with the base station on the basis of the control information, wherein the first parameter indicates the location of a superframe in which uplink ranging is to be performed, and the second parameter indicates the frame duration in the superframe which is indicated by the first parameter and in which uplink ranging is performed.