Abstract: A divided Media Access Control (MAC) protocol structure, a data transmission and reception method, and a handover method and system using the structure in a wireless communication system for efficiently managing session information in handover of an MSS (Mobile Subscriber Station). In the MAC protocol structure, a MAC is divided into a MAC-high layer and a MAC-low layer. The MAC-high layer performs session information-related functions and the MAC-low layer performs functions sensitive to a time delay in relation to handover of an MSS. In the handover method, when an MSS in the wireless communication system performs handover between Access Points (APs), session information is managed at a fixed position by an Access Point Controller (APC) including an MAC-high layer or a serving AP. Therefore, the system load can be reduced and communication quality can be improved.

Abstract: A method for controlling operation modes of a medium access control layer by a mobile subscriber station in a broadband wireless access communication system including the mobile subscriber station and a serving base station providing service to the mobile subscriber station is provided. The method includes the steps of: mode-transiting into an idle mode when there is no data transmission between the serving base station and the mobile subscriber station during a predetermined first time interval in an awake mode; detecting movement of the mobile subscriber station in the idle mode into another paging zone covering a target base station, which is different from a paging zone covering the serving base station; and mode-transiting into the awake mode and performing location update together with the target base station when the movement of the mobile subscriber station is detected.

Abstract: A method for controlling operation modes of a medium access control layer by a mobile subscriber station in a broadband wireless access communication system including the mobile subscriber station and a serving base station providing service to the mobile subscriber station is provided. The method includes the steps of: mode-transiting into an idle mode when there is no data transmission between the serving base station and the mobile subscriber station during a predetermined first time interval in an awake mode; detecting movement of the mobile subscriber station in the idle mode into another paging zone covering a target base station, which is different from a paging zone covering the serving base station; and mode-transiting into the awake mode and performing location update together with the target base station when the movement of the mobile subscriber station is detected.

Abstract: A system and method for fast network re-entry in a broadband wireless access communication system. A mobile station transmits a first message requiring fast network re-entry to a base station and performs the fast network re-entry together with the base station when receiving a second message approving the fast network re-entry from the base station. The base station receives the first message, authenticates the first message using final session information of the mobile station that is previously stored in the base station, transmits the second message to the mobile station when succeeding in authentication of the first message, and performs the fast network re-entry together with the mobile station.

Abstract: An apparatus and method of providing location information in a mobile communication system are provided including steps for receiving a message by a Code Division Multiple Access (CDMA) 2000 1x Base Station (BS) and transmitting the received message to a 1x Evolution-Data Optimized (EV-DO) BS, wherein the message shows the location of the 1x BS and is transmitted from an Access Terminal (AT) sharing session information with the 1x EV-DO BS, updating, by the 1x EV-DO BS, information on the 1x BS according to the message including the location of the 1x BS, transmitting a paging request message from the 1x EV-DO BS to the 1x BS when a 1x EV-DO paging event is generated for the AT, generating a paging message by the 1x BS and transmitting it to the AT, and transmitting a message indicating the completion of a 1x service from the 1x BS to the 1x EV-DO BS when the AT ends the provision of the 1x service.

Abstract: A system and method are provided for concurrently supporting a data service and circuit based voice service in the data mode when a mobile communication system is operating in the data mode, including steps for, when a Base Station (BS) pages a Mobile Station (MS) in the data mode, forming a message to provide the circuit based voice service in the data mode by the BS and transmitting the message to the MS, forming a message as response to provide the circuit based voice service in the data mode by the MS and transmitting the message to the BS; establishing a traffic channel and a Quality of Service (QoS) setup to provide the circuit based voice in the data mode service by using the information included in the messages.

Abstract: A handoff apparatus and a method for reducing the number of session transfers in a mobile communication system are provided, in which an ANC determines whether a target ANT is included in an active set of the mobile communication system, establishes a connection session between the mobile communication system and an AT through a path connecting a target ANC of a different vendor and the target ANT if the target ANT is not included in the active set, and establishes the connection session between the mobile communication system and the AT through a path connecting the ANC and the target ANT if the target ANT is included in the active set.

Abstract: A system and method for fast network re-entry in a broadband wireless access communication system. A mobile station transmits a first message requiring fast network re-entry to a base station and performs the fast network re-entry together with the base station when receiving a second message approving the fast network re-entry from the base station. The base station receives the first message, authenticates the first message using final session information of the mobile station that is previously stored in the base station, transmits the second message to the mobile station when succeeding in authentication of the first message, and performs the fast network re-entry together with the mobile station.

Abstract: A method for controlling operation modes of a medium access control layer by a mobile subscriber station in a broadband wireless access communication system including the mobile subscriber station and a serving base station providing service to the mobile subscriber station is provided. The method includes the steps of: mode-transiting into an idle mode when there is no data transmission between the serving base station and the mobile subscriber station during a predetermined first time interval in an awake mode; detecting movement of the mobile subscriber station in the idle mode into another paging zone covering a target base station, which is different from a paging zone covering the serving base station; and mode-transiting into the awake mode and performing location update together with the target base station when the movement of the mobile subscriber station is detected.

Abstract: Provided is an apparatus and method for setting up aquality-of-service (QoS) in a mobile communication system. A mobile terminal (MT) generates a resource reservation message including requested QoS information and packet filtering information for a predetermined service. A packet data service node (PDSN) stores the QoS information and the packet filtering information. Upon receiving packet data corresponding to the stored QoS information from the external network, the PDSN sends a request for a new QoS setup to the AN. An access network (AN) determines a granted QoS to be applied to a wireless session and sends a request for new QoS setup to the MT. If the MT grants the new QoS setup, the MT sends a response to the new QoS setup request from the MT to the PDSN via the AN.

Abstract: A method for controlling operation modes of a medium access control layer by a mobile subscriber station in a broadband wireless access communication system including the mobile subscriber station and a serving base station providing service to the mobile subscriber station is provided. The method includes the steps of: mode-transiting into an idle mode when there is no data transmission between the serving base station and the mobile subscriber station during a predetermined first time interval in an awake mode; detecting movement of the mobile subscriber station in the idle mode into another paging zone covering a target base station, which is different from a paging zone covering the serving base station; and mode-transiting into the awake mode and performing location update together with the target base station when the movement of the mobile subscriber station is detected.

Abstract: A system and method for controlling congestion between response messages responsive to a group call page in a mobile communication system are provided. Efficient group call control is accomplished by transmitting a group call page message comprising a group call identifier to an access terminal through a control channel, and at the access terminal receiving the group call page message, applying a different response time according to a reception type of the group call page message to transmit a response message to the access network transceiver system.

Abstract: An apparatus and method for processing a call in a PTT system where, when an outgoing terminal transmits an invitation message for PTT service or for call setup to a predetermined incoming terminal in a dormant state, the outgoing terminal transmits the invitation message together with address information on the incoming terminal to enable a PTT server to detect the location of the incoming terminal before the invitation message is transmitted to the incoming terminal, thereby reducing the time taken to set up a PTT call.

Abstract: A method and apparatus for processing a message in a mobile communication service system are provided. When a subscriber requests a Push To Talk (PTT) group communication service in the mobile communication service system, a group request service based on temporary specific information assigned to the corresponding group is generated and transmitted to a called mobile station over a signaling channel.

Abstract: An apparatus and method for processing a call in a mobile communication system are provided. In the apparatus and method for processing a call in the mobile communication system, a base station sector at which a mobile station is located and a neighboring base station sector are designated as one call receiving zone when a mobile station transitions from a traffic state to a dormant state and paging is performed to a call receiving zone which is first designated when a call is received to the mobile station.

Abstract: An apparatus and method for determining access power in a mobile communication system. The system includes a base transceiver station (BTS) for generating and transmitting a message field including access parameter information and BTS load information within an area covered by the BTS, and the mobile terminal for determining transmission power for access on a basis of power of a signal received from the BTS and the message field. The method includes the steps of generating a message field including access parameter information and BTS load information and transmitting the message field from the BTS to the mobile terminal within an area covered by the BTS, and determining transmission power for access in the mobile terminal on a basis of power of a signal received from the BTS and the message field.

Abstract: A method for managing a service flow of a mobile subscriber station (MSS) in a serving base station (BS) for a mobile communication system including the serving BS in communication with the MSS through a wireless access channel, and at least one active BS included in an active BS set of the MSS. Upon receiving a service flow management request from the MSS, the serving BS updates a service flow with the MSS, and transmits the updated service flow to the active BS using a predetermined message. Upon receiving a response message for the updated service flow from the active BS, the serving BS transmits service flow information of each active BS included in the response message to the MSS.

Abstract: A method for controlling operation modes of a medium access control layer by a mobile subscriber station in a broadband wireless access communication system including the mobile subscriber station and a serving base station providing service to the mobile subscriber station is provided. The method includes the steps of: mode-transiting into an idle mode when there is no data transmission between the serving base station and the mobile subscriber station during a predetermined first time interval in an awake mode; detecting movement of the mobile subscriber station in the idle mode into another paging zone covering a target base station, which is different from a paging zone covering the serving base station; and mode-transiting into the awake mode and performing location update together with the target base station when the movement of the mobile subscriber station is detected.

Abstract: A divided Media Access Control (MAC) protocol structure, a data transmission and reception method, and a handover method and system using the structure in a wireless communication system for efficiently managing session information in handover of an MSS (Mobile Subscriber Station). In the MAC protocol structure, a MAC is divided into a MAC-high layer and a MAC-low layer. The MAC-high layer performs session information-related functions and the MAC-low layer performs functions sensitive to a time delay in relation to handover of an MSS. In the handover method, when an MSS in the wireless communication system performs handover between Access Points (APs), session information is managed at a fixed position by an Access Point Controller (APC) including an MAC-high layer or a serving AP. Therefore, the system load can be reduced and communication quality can be improved.

Abstract: A call setup system and method for a mobile station in a dormant state in a mobile communication system supporting a Short Data Burst (SDB). The system and method comprise setting fields to call setup request values in an SDB signal message, transmitting the signaling message including the fields to an access network, and establishing a traffic channel in response to channel assignment information corresponding to the SDB signal message if the access network transmits the channel assignment information; and transmitting a response message to the SDB signal message to the mobile station, and at the same time transmitting a traffic channel assignment message to the mobile station in response to the call setup request values included in the SDB signal message.