Abstract: Provided are a data transmission apparatus and a data reception apparatus when a retransmission of a data unit repeatedly fails in a Radio Link Control (RLC) layer. When a retransmission with respect to a particular data unit, for example, a Protocol Data Unit (PDU) continuously fails, each of a transmission entity and a reception entity may detect the retransmission failure and locally process a corresponding packet. Accordingly, the transmission entity and the reception entity may continuously transmit and receive data.

Abstract: There are provided a method for processing an exceptional case of establishing a default bearer and a device therefor in order to solve a problem in that a user equipment cannot actually receive an IP service by accessing a packet network while failing in establishing the default bearer in a mobile communication system. A method for processing an exceptional case of establishing a default bearer in a mobility management entity includes: receiving a network attachment request from a user equipment; transmitting a network attachment acceptance including an activation request of the default bearer to the user equipment in response to the network attachment request; and cancelling a network attachment procedure when a completion response to the activation request of the default bearer is not received from the user equipment within a predetermined time.

Abstract: A session control method for use in a radio communication system is provided. In the session control method, a session management (SM) protocol message for the setting or the cancellation of a session is transmitted with the aid of a radio resource control (RRC) protocol message of a lower layer for the setting or the cancellation of a radio bearer. Therefore, it is possible to reduce the number of signalling messages to a radio interface and thus to minimize signalling delays. In addition, it is possible to realize a many-to-one correspondence between services and bearers and realize efficient packet services in an evolved radio communication system by separately defining service identifiers and bearer identifiers and selectively setting or cancelling a bearer according to the correspondence between services and bearers.

Abstract: A method for controlling uplink IP packet filtering in a mobile terminal in a 3GPP Evolved Packet System (EPS) is provided, including an information receiving operation of receiving IP address information allocated to user equipment, and filtering information required for delivering an uplink IP packet received from the user equipment; and a filtering operation for determining which packet data network and a bearer the IP packet is delivered to, based on the IP address information and the filtering information. In a 3GPP evolved packet system supporting a default bearer function, a packet data network to which an uplink IP packet is delivered and a bearer identifier can be efficiently determined when the user equipment simultaneously accesses one or more packet data networks and is allocated several IP addresses, resulting in effective uplink packet filtering.

Abstract: Provided is a buffer status reporting method of a terminal device in a mobile communication system. The buffer status reporting method includes obtaining a radio resource allocation for a plurality of component carriers from a base station, configuring a plurality of medium access control-protocol data units (MAC-PDUs) including buffer status information corresponding to the plurality of component carriers, the plurality of MAC-PDUs including generated sequence numbers (SNs), and transmitting the plurality of MAC-PDUs to the base station through the plurality of component carriers.

Abstract: Provided is a method of downlink packet transmission control in a mobile communication system. The method includes the steps of: a) establishing a default bearer when a downlink packet is received; b) determining whether a downlink packet filter corresponding to a downlink packet exists or not; c) transferring the downlink packet through the default bearer if the corresponding downlink packet filter does not exist; and d) transferring the downlink packet through a dedicated bearer if the corresponding downlink packet filter exists.

Abstract: Service continuity is provided between a 3GPP network and a non-3GPP network. When a mobile station having accepted service in the 3GPP network moves to the non-3GPP network or returns from the non-3GPP network to the 3GPP network, an interworking gateway is interworked with a GGSN through a universal tunnel using a packet data network, and accordingly a mobile subscriber may accept seamless service.

Abstract: The present invention relates to a method for guaranteeing service continuity between a 3GPP network and a non-3GPP network. According to the exemplary embodiment of the present invention, when a mobile station receiving a service from the 3GPP network moves to the non-3GPP network or it moves back to the 3GPP network from the non-3GPP network, an inter-working gateway inter-works with a SGSN or a GGSN through the 3GPP network to provide a seamless service to a mobile subscriber.

Abstract: Provided is a method for controlling an MBMS bearer of a mobile terminal. The method includes the steps of: at the RRC, establishing an MBMS bearer for an MBMS service when the RRC is informed of MBMS service session start from outside; at the RRC, informing the RABM of MBMS service session start when the MBMS bearer is established; and receiving MBMS service data from outside through the established MBMS bearer if the RABM transits a session inactive state to a session active state.

Abstract: The present invention discloses a gateway and a terminal negotiating a QoS in a network interworking system. The terminal negotiates a QoS with a WLAN access point and establishes a WLAN access bearer. In addition, the terminal negotiates a QoS with the gateway for packet exchange through the WLAN access bearer. The gateway accepts a QoS according to a QoS of an external bearer, and the terminal and the gateway establish an I-WLAN bearer. Subsequently, the terminal negotiates a QoS with the gateway for packet exchange with an end terminal through the I-WLAN bearer. The gateway accepts the QoS depending on available resources of the external and I-WLAN bearers, and the terminal and the gateway establish an IP bearer.

Abstract: The present invention relates to a multi-media broadcast and multicast service (MBMS) providing system and a method thereof. The MBMS providing system provides an MBMS to a terminal having an MBMS function. The MBMS providing system includes a service center and a radio access network. The service center provides MBMS data and metadata having service announcement information abut the MBMS to the terminal. The radio access network periodically transmits establishment information for receiving the metadata to the terminal, and provides the metadata and the MBMS data received from the service center to the terminal through nodes for transmitting data. The establishment information includes first establishment information having a service identifier and IP/UDP parameters for receiving the metadata, and second establishment information for establishing a radio channel.

Abstract: A 3GPP-WLAN interworking system to which WLAN user equipment is accessed includes a WLAN access network including a WLAN access point, a 3GPP packet-switched service network including terminal equipment, a 3GPP core network connecting the WLAN access network and the 3GPP packet-switched service network, and a packet data gateway relaying the 3GPP core network and the 3GPP packet-switched service network. The WLAN user equipment negotiates a QoS according to a wireless environment with the WLAN access point to generate a WLAN bearer, negotiates a QoS according to a type of user data with the packet data gateway to generate a WLAN 3GPP IP access bearer, and negotiates a QoS according to data process performance of the terminal equipment with the terminal equipment to generate an end-to-end bearer.

Abstract: A method recognizes a request for data transmission by a mobile/base station RRC (Radio Resource Control) using a network transfer device, by which the mobile/base station RRC can recognize the request for data transmission using the network transfer device in a state where recognition of the request for data transmission is disabled. The mobile/base station RRC sets the network transfer device in a suspend state and recognizes a request for data transmission from an up/down link. The network transfer device in the suspend state recognizes the request for data transmission to the up/down link, and sends a message to the mobile/base station RRC to inform the mobile/base station RRC that it recognizes the request for data transmission. The mobile/base station RRC recognizes the request for data transmission according to a received message from the network transfer device and transits to an active state.

Abstract: An apparatus and method for notifying a user if a mobile terminal is located in an area where its power consumption is high is provided. The voltage level of a battery provided to the mobile terminal is detected. If the detected battery voltage level is reduced by at least a predetermined reference value or more for a predetermined period of time, the mobile terminal determines that the mobile terminal is located in an area where power consumption is high, and then informs the user thereof.

Abstract: An apparatus and method for notifying a user if a mobile terminal is located in an area where its power consumption is high is provided. The voltage level of a battery provided to the mobile terminal is detected. If the detected battery voltage level is reduced by at least a predetermined reference value or more for a predetermined period of time, the mobile terminal determines that the mobile terminal is located in an area where power consumption is high, and then informs the user thereof.

Abstract: Disclosed is a method for recognizing a request for data transmission by a mobile/base station RRC (Radio Resource Control) using a network transfer device, the method including: (a) the mobile/base station RRC setting the network transfer device in a suspend state; (b) the network transfer device recognizing the request for data transmission from an up/down link in the suspend state, and sending a message to the mobile/base station RRC to inform the mobile/base station RRC that it recognizes the request for data transmission; (c) the mobile/base station RRC recognizing the request for data transmission according to a received message from the network transfer device and transiting to an active state; and (d) the network transfer device transiting to the active state using the mobile/base station RRC. This method makes it possible to efficiently use the radio resources and reduce the initial access overhead.

Abstract: A method for directly performing a data analysis, a logical design and a physical design processes on an EDIF file and an initial data, without utilizing Troll relational Database system, to create an optimized schema, a meta data and a processor load (PLD) without any overlapped process. First, the EDIF file and the initial data file are received and an initial system environment is set for creating the meta data and the processor load data. Further, a DBMS.sub.-- MODE.sp file and a DBMS.sub.-- REL.sp file are created such that the database mode specification file represent a recorded definition of a SET mode defined in all the EDIF files, and such that the database relation specification file represent a recorded definition of the relation in all the EDIF files which are being converted into Chill Syntax Structure. Various meta data corresponding to each processor are created based on the catalogue of transaction files.

Abstract: A method of creating signal message common files for a mobile switching center which is capable of simplifying a process and effectively and directly creating a signal message common file is disclosed.