Abstract: A method and device for performing wireless communication ranging are provided. A machine-to-machine (M2M) device receives a paging message from a base station, transmits a bandwidth request (BR) preamble sequence to the base station, receives a first UL grant to allocate an uplink (UL) resource for the transmission of a BR header, transmits the BR header including a ranging request indication parameter to the base station through a UL resource allocated by the first UL grant, receives a second UL grant to allocated a UL resource for transmission of a ranging request message from the bases station, and transmits the ranging request message to the base station through a UL resource allocated by the second UL grant.

Abstract: A method of transmitting control information in a wireless communication system includes configuring a burst including data symbols and a midamble and transmitting the burst through an uplink shared channel. The data symbols and the midamble carry the same control information. Even if control information is transmitted on an uplink shared channel, reception errors in a base station can be reduced by improving transmission reliability.

Abstract: The present description relates to a method in which a terminal performs network reentry procedures in an idle mode in a wireless access system, wherein the method comprises the following steps: receiving, from a base station, control information indicating an initial ranging back-off window size for machine-to-machine (M2M) terminals during a paging listening period; determining an initial ranging back-off window size for initial ranging using the received control information; and performing initial ranging procedures with the base station based on the determined initial ranging back-off window size.

Abstract: Provided are a position updating method and device for Machine To Machine (M2M) communication. An M2M device transmits a position update capability message including a mobility type and an M2M traffic type to a base station, and receives a position update capability confirmation message including a position update type from the base station. The MTC device performs a position update according to the position update type.

Abstract: Provided are a method and device for performing a position update in machine to machine (M2M) communication. An M2M apparatus in an idle mode receives a paging message from a base station. The paging message comprises an action code and a network access type, the action code being an indication for the M2M apparatus to implement position update. When the network access type indicates the allocation of resources for a ranging request, the M2M apparatus transmits the ranging request to the base station by means of an allocated uplink.

Abstract: The present invention relates to compact header structures of various forms used in wireless access systems as well as a method and apparatus for the transmission and reception of data using such headers. The method for receiving data wherein the mobile terminal uses the Persistent Allocation (PA) mode in one of the embodiments of the present invention comprises the step of receiving a Downlink Persistent Allocation MAP Information Element (DL PA MAP IE) from the base station, which contains information relating to the resource region allocated for persistent allocation in the downlink, and the step of receiving the downlink data containing a Compact Medium access control Header (CMH) via said resource region revealed by said information. At this stage, the CMH can contain an indicator that indicates whether the downlink data contains an extended header, and a length field indicating the length of the data payload.

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: 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: 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 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.