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 present invention relates to a method and apparatus for transmitting/receiving resource allocation information in a random access process in a wireless communication system. The method for transmitting/receiving resource allocation information in a random access process in a wireless communication system, according to one aspect of the present invention, involves a base station receiving a code from a terminal, and transmitting, to the terminal, CDMA Allocation A-MAP IE (code division multiple access allocation Advanced-MAP information element) including a field which indicates whether it is a source allocation for a bandwidth request or a resource allocation for ranging.

Abstract: A method of performing a ranging process between a base station and a mobile station in sleep mode in a wireless access system, wherein the base station provides the mobile station with an initial notification of a periodic ranging time that occurs during a sleep time interval and during which the mobile station is to perform the ranging process, the initial notification included in a first message, the first message indicating whether the mobile station should terminate sleep mode to receive downlink data, and wherein the base station provides the mobile station with subsequent notifications of periodic ranging times that occur during the sleep time interval, the subsequent notifications indicated in a second message, the second message transmitted to the mobile station as part of the ranging process such that the mobile station performs a plurality of ranging processes within the sleep time interval.

Abstract: This document is related to a method for acquiring information for media independent handover. More specifically the method comprises: submitting a media independent handover (MIH) query to a base station (BS) by sending a first request message, and receiving a response to the MIH query. Because the first request message is used for authorization, preferably the PKM message, the MS can acquire information for handover between heterogeneous networks before the MS finishes the network entry.

Abstract: The present invention relates to a broadband wireless access system, and more particularly, to a handover method that can reduce a stop time in an entry before a break-type handover for performing more efficient handover, and to apparatus for performing same. A handover method for a terminal in a broadband wireless access system according to one embodiment of the present invention may include: receiving, from a serving base station, a handover command message including the information of a section in which scheduling for the terminal is not performed; transmitting a ranging code to a target base station during the section; and receiving information indicating the transmitted result of the ranging code from the serving base station.

Abstract: A method for transmitting and receiving an ACKnowledgment (ACK) in a wireless communication system is disclosed. The method includes transmitting a bandwidth request indicator to a Base Station (BS); and receiving an ACK for the transmitted bandwidth request indicator from the BS, the ACK including an extended A-MAP Type field, wherein the extended A-MAP Type field indicates a format of the ACK.

Abstract: A method of providing neighbor base station information via a mobile subscriber station in a broadband wireless access system is disclosed. In providing neighbor base station information (S316) to a serving base station from a mobile subscriber station in a broadband wireless access system, the present invention includes the steps of performing a scanning and a synchronization (S312, S313) on a mobile base station based on information provided from the serving base station (S311) and transmitting the neighbor base station information acquired from the scanning and the synchronization to the serving base station (S316) regardless of a presence or non-presence of a request from the serving base station. Accordingly, the present invention can efficiently transmit the neighbor base station signal intensity and frame information acquired by the mobile subscriber station.

Abstract: The present invention relates to a broadband wireless connection system, and more particularly, to a method for a base station to more efficiently allocate resources to a terminal, and to an apparatus for performing same. In a broadband wireless connection system according to one aspect of the present invention, a method for a base station for continuously allocating resources comprises the steps of: determining a size and location of a continuous allocation resource to be allocated through continuous resource allocation; comparing the size and location of the determined continuous allocation resource with those of previously allocated continuous allocation resources; and transmitting a map information element (A-MAP IE) including resource allocation information set according to the results of the comparison to a terminal.

Abstract: The present invention relates to a broadband wireless access system, and more specifically, to a reliable group resource allocation method and an apparatus therefor.

Abstract: A method for supporting coexistence in a mobile station for supporting a coexistence mode of WiMAX and secondary wireless communication system while considering subchannel allocation, the method comprises, requesting a band adaptive modulation and coding (AMC) for adjacent subcarrier permutation to a base station by transmitting first coexistence information, after the secondary wireless communication is turned on, and requesting a release of the adjacent subcarrier permutation to the base station by transmitting second coexistence information, if the secondary wireless communication system is turned off. Accordingly, it is possible to provide simultaneity of different wireless communications when a sleep mode is used and improve simultaneity of different wireless communications even when the sleep mode is not used.

Abstract: A method and apparatus for performing a location update based on mobility information indicating a velocity of a Mobile Station (MS), and a method and apparatus for using a timer for a location update in a wireless access system are disclosed. The MS transmits a deregistration request message requesting initiation of idle mode to a first Base Station (BS), receives a deregistration command message including paging group information from the first BS, the paging group information including a primary paging group Identifier (ID) and primary paging offset of a primary paging group allocated to the MS, and a secondary paging group ID and secondary paging offset of a secondary paging group allocated to the MS, and activates a paging group location update timer after moving from the primary paging group to the secondary paging group. The deregistration request message includes first mobility information indicating a velocity of the MS and the paging group information is set based on the first mobility information.

Abstract: A method for allowing a mobile station (MS) to perform zone switching within coverage of a base station (BS) in a broadband wireless access system is disclosed. A method for controlling an advanced mobile station (AMS) to perform zone switching in an MZone of a serving advanced base station (serving ABS) supporting a legacy mobile station (MS) includes receiving a handover command (AAI_HO-CMD) message indicating zone switching to a legacy zone (LZone) from the MZone, and receiving at least one of an uplink MAP (UL-MAP) and a downlink MAP (DL-MAP) from the LZone.

Abstract: Disclosed is a communication technique using the change of type of a femto base station. The femto base station is able to change the type of CSG opening/closing depending on conditions, and broadcasts the information on the change. A terminal is able to determine the network entry/handover to a corresponding femto cell by using the broadcasted information. The change of cell type of a CSG femto cell can be used when interference adjustment is required depending on the resource conditions of a femto cell.

Abstract: A method of providing security of a relay station is disclosed, by which the security can he provided for the relay station in a broadband wireless access system having the relay station. In a mobile communication system to relay a signal transfer between a base station and a mobile station, the present invention includes the steps of performing a relay station authentication from an authentication server using an authentication protocol, receiving a master key from the authentication server, deriving an authentication key from the received master key, deriving a message authentication code (MAC) key using the derived authentication key, and relaying a signal exchanged between the mobile station and the base station using the derived message authentication code key.

Abstract: This document is related to a method for acquiring information for media independent handover. More specifically the method comprises: submitting a media independent handover (MIH) query to a base station (BS) by sending a first request message, and receiving a response to the MIH query. Because the first request message is used for authorization, preferably the PKM message, the MS can acquire information for handover between heterogeneous networks before the MS finishes the network entry.

Abstract: A method of controlling entry into an idle mode in a wireless communication system is disclosed. More specifically, the method includes receiving from a base station (BS) a first message including a first action code, wherein the first action code requests a mobile station (MS) to de-register from the BS and initiate idle mode, and if the MS has pending uplink data, transmitting a second message including a second action code, wherein the second action code rejects the request from the BS.

Abstract: A method of performing actions related to handover by a mobile station (MS) in a wireless mobile communication system is disclosed. More specifically, the MS receives information from a base station (BS), wherein the information includes at least one action for performing handover and at least one condition corresponding to the at least one action. Furthermore, the MS transmits a request message to perform the at least one action based on the received information from the BS and receives a response message in response to the request message. Lastly, the MS performs the at least one action according to the received response message.

Abstract: Various methods and apparatuses for reliably transmitting or receiving messages and data in a Power Saving Class (PSC) mode, which are applicable to a wireless access system, are disclosed. In addition, various methods and apparatuses for retransmitting a management message (e.g., a control message) in the PSC mode are disclosed. Accordingly, the messages and data can be transmitted using a Hybrid Automatic Repeat reQuest (HARQ) scheme.

Abstract: A method for transmitting and receiving group configuration information on a user equipment is disclosed. The user equipment receives information on group deletion of the user equipment from a base station. The user equipment transmits an acknowledgement (ACK) signal about the received information on the group deletion to the base station. In this case, the information on the group deletion is configured as a separate extended header type or a type that an extended header is piggybacked on a specific downlink packet to be transmitted to the user equipment. Preferably, the user equipment decodes the received information on the group deletion of the user equipment. The user equipment successfully decodes the information on the group deletion and is then able to transmit the acknowledgement (ACK) signal about the received information on the group deletion to the base station.

Abstract: A method of performing actions related to handover by a mobile station (MS) in a wireless mobile communication system is disclosed. More specifically, the MS receives information from a base station (BS), wherein the information includes at least one action for performing handover and at least one condition corresponding to the at least one action. Furthermore, the MS transmits a request message to perform the at least one action based on the received information from the BS and receives a response message in response to the request message. Lastly, the MS performs the at least one action according to the received response message.