Abstract: Provided is an apparatus and method for providing a cell-based advertisement broadcast service in a broadband wireless communication system. In an advertisement broadcast service of a service interface server in the broadband wireless communication system, an advertisement content transmission request message containing at least one of information about advertisement broadcast content, information about an advertisement broadcast zone, and information about an advertisement broadcast channel is received from a service provider. The received advertisement content transmission request message is transmitted to an MCBCS controller.

Abstract: A congestion control method and system in a communication system that transmits and receives a data segment using Transmission Control Protocol (TCP) and performs a Fast Retransmit mode and a Fast Recovery mode upon occurrence of a lost segment. A transmission terminal retransmits the lost segment to a reception terminal and then calculates the expected number of duplicate acknowledgements (ACKs) expected to be received from the reception terminal. The transmission terminal determines whether an ACK recently received from the reception terminal is identical to a new ACK or a duplicate ACK. The transmission terminal accumulates the received duplicate ACK, and compares the number of the accumulated duplicate ACKs with the expected number of the duplicate ACKs. The transmission terminal retransmits the lost segment to the reception terminal if the number of the accumulated duplicate ACKs is larger than the expected number of the duplicate ACKs.

Abstract: A method for performing a handoff between a wireless local area network (LAN) including an access router (AR) supporting an Internet protocol (IP) routing function and a mobile communication network including a packet data service node (PDSN) connected to a base station system (BSS), for supporting the IP routing function. An access terminal (AT) detects its movement from the wireless LAN to the mobile communication network, and exchanges information for tunneling between the AR and the PDSN, with the PDSN. The PDSN sets up a tunnel for packet delivery between the PDSN and the AR, and delivers packets to the AT through the set tunnel.

Abstract: A terminal-state-setting apparatus and a method using a distance between a portable communication terminal and a user are provided. The terminal-state-setting method in the portable communication terminal includes measuring a distance between the terminal and a user-distance-recognizing device using a radio communication; and setting a state of the terminal according to the measured distance value. The user does not have to manually set the terminal state through the menu setup, and the user state can be accurately reflected through a presence service.

Abstract: A system and method for utilizing MS information in a communication system are provided, in which an MS, an MS information server stores MS information about the at least one MS, a content server receives the MS information from the MS information server, upon receipt of the request for the MS capability-based content service from the at least one MS and provides the MS capability-based content service using the MS information to the at least one MS, and an USI server transmits the request for the MS capability-based content service to the content server, receives the MS information from the MS information server, upon receipt of a request for the MS information from the content server, and provides the MS information to the content server.

Abstract: A system and method for providing a service in a communication system are provided, in which upon receipt of a request for provisioning of the service with a requested QoS class from an MS, a service server transmits a QoS information request message to an interface server and, upon receipt of a QoS information response message for the QoS information request message from the interface server, the service server provides the service with the requested QoS class to the MS.

Abstract: A method for providing an Internet service based on location information of a subscriber station in a communication system. The Internet service method includes, upon receipt of a search request from a subscriber station, determining whether a network accessed by the subscriber station can support a Universal Service Interface (USI), acquiring location information of the subscriber station if the network accessed by the subscriber station can support the USI, and providing an Internet service based on the acquired location information of the subscriber station to the subscriber station.

Abstract: Disclosed is a method for interfacing in a communication system. The method includes receiving an event, which should be processed using information managed by a second system providing a second service, from a first system providing a first service; and performing an interface so that the second system performs an operation corresponding to the event by using the information.

Abstract: A method and system for transmitting/receiving data in a communication system are provided, in which upon generation of IM service data to be transmitted to a second MS, a first MS requests paging to a second MS to an IM server, the IM server transmits a paging message to the second MS in response to the paging request, and the second MS receives the IM service data from the first MS, after receiving the paging message.

Abstract: A media transmission method and apparatus of a first server using a session-based messaging service in a communication system. The first server sets Media Relay Capacity (MRC) information of a first User Equipment (UE), transmits the set MRC information to a second server, receives a response from the second server after transmitting the MRC information, and notifies the response to the first UE. The response is a response that the second server has received from a second UE after notifying the second UE of the setting of the MRC information.

Abstract: Disclosed is a method and apparatus for providing wireless access in a broadband wireless access system. The apparatus authenticates an access terminal when an access of the access terminal located in a first network employing a first predetermined access scheme is detected, allocates a private Internet Protocol (IP) address to the authenticated access terminal, translates the private IP address into a public IP address when an access of the access terminal through the private IP address is detected, and controls that the access terminal accesses a second network employing a second predetermined access scheme through the public IP address.

Abstract: A data push service system and method using a heterogeneous network. The system transmits push data to a Hybrid Access Terminal (HAT) in a heterogeneous mobile communication system in which at least one circuit network overlaps with at least one packet network. The HAT can be connected to a circuit network or a packet network, and is registered in a new access network. The system includes a Packet Service & Mobility Gateway (PSMG) for acquiring access state and connection information of the HAT from the circuit network and the packet network, and generating an access network switching request upon receipt of an external request signal; and a Push Proxy Gateway (PPG) for acquiring access information of the HAT which will transmit the push data from the PSMG, and transmitting a request message to the PSMG.

Abstract: An apparatus and method for providing Short Message Service (SMS) and Multimedia Messaging Service (MMS) over a wired telephone network are provided. In an Access Point (AP), an access module provides a wireless connection interface for wireless communication with a convergence terminal. A control module controls wireless communication and communications with the wired telephone network to provide the SMS and the MMS to the convergence terminal via the access module. A wired phone module, connected to the access module and the wired telephone network, exchanges wireless communication signals with the wired telephone network. An SMS processor, connected to the access module and the wired telephone network, processes SMS transmission and reception, and an MMS processor, connected to the access module, processes MMS transmission and reception.

Abstract: An apparatus and method for registering the location of a multi-interface convergence terminal are provided. In a register for managing location registration information of a multi-interface convergence terminal, upon receipt of a message with the address of an AP using a short-range wireless communication protocol, a signaling processor requests a wired phone number mapped to the AP, generates a message including the wired phone number and sends the message. A register database provides the wired phone number mapped to the AP to the signaling processor and stores the address and of the AP and the wired phone number mapped to the AP address.

Abstract: A system and method are provided for performing voice data handoff from a cellular network to a portable Internet/wireless local area network (WLAN) network by a mobile terminal in a heterogeneous network environment. The system and method are provided wherein whether to perform handoff is determined, and a location of a mobile terminal in the portable Internet/WLAN network is registered, a request for handoff is sent to the cellular network, and in response thereto, a request for voice-over-Internet protocol (VoIP) call setup through a specific upper node of the portable Internet/WLAN network is received, and the VoIP call to the upper node of the portable Internet/WLAN network is set-up, and resources of a circuit voice call to a specific upper node of the cellular network are released.

Abstract: When a terminal moves from a WLAN network to a cellular network after being allocated an IP address from a PDSN of the cellular network, a tightly coupled interworking method and apparatus between the cellular network and the WLAN network set up a temporary tunnel between the PDSN and an AGW of the WLAN network, and after completion of the handoff from the WLAN network to the cellular network, inform the PDSN of the handoff completion from the terminal, thereby enabling fast seamless handoff without data loss. Compared with the conventional tightly coupled scheme, the proposed tightly coupled scheme can prevent the need for processing cellular signals in the WLAN network because there is no need to transmit cellular signals in a WLAN interval, especially between the terminal and the AGW.

Abstract: A handover system and method in a heterogeneous network are provided. The handover system includes a first network for providing a radio resource using a first radio frequency bandwidth. A first apparatus of a cellular network is connected to the first network through a wired network. A mobile station accesses the cellular network through a tunnel established with the first apparatus using the radio resource provided from the first network or accesses the cellular network using a radio resource provided from the cellular network, sets up a new path by a handover when the handover is needed, and accesses the cellular network through the new path.

Abstract: Disclosed is a method and apparatus for providing wireless access in a broadband wireless access system. The apparatus authenticates an access terminal when an access of the access terminal located in a first network employing a first predetermined access scheme is detected, allocates a private Internet Protocol (IP) address to the authenticated access terminal, translates the private IP address into a public IP address when an access of the access terminal through the private IP address is detected, and controls that the access terminal accesses a second network employing a second predetermined access scheme through the public IP address.

Abstract: A handoff method is provided between a mobile communication network including a packet data service node (PDSN), connected to a base station system (BSS), for supporting an Internet protocol (IP) routing function, and a wireless local area network (LAN) including an access router (AR) supporting the IP routing function. Upon detecting handoff to the wireless LAN, an access terminal (AT) with a contact set up to the PDSN exchanges a data packet with a correspondent node (CN) via a tunnel between the AR and the PDSN. The AT determines a user traffic state according to a transmission/reception state of the data packet, and changes the contact connected to the AT according to the user traffic state.

Abstract: A cellular mobile communication system and method for using a heterogeneous wireless network are provided. The system includes an access point of a wireless LAN (Local Area Network) for providing a wireless resource using a wireless LAN-dedicated frequency; a base station of a cellular network connected with the access point through a wired network and setting up a first tunnel; and a terminal for setting up a second tunnel with the access point using the wireless resource provided from the access point, and connecting to the cellular network through the first and second tunnels to perform call processing.