Abstract: The present invention relates to a handover method between systems of a multi-mode terminal. A multi-cast based protocol is added to an Internet protocol (IP) based wireless network to cooperate with the wireless access protocol of the terminal. In addition, minimized processes are added to use the wireless access protocol having wide area coverage. Accordingly, the handover between the systems may be performed while packet loss or service delay caused by a movement of a user may be minimized, and terminal complexity may not be increased.

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: Provided is a paging method and apparatus considering a carrier aggregation (CA) environment in a mobile communication system. A paging method of a user equipment may include: selecting a component carrier (CC) set of the user equipment by selecting a CC for each component carrier element (CCE); receiving, from an evolved Node-B (eNB), a paging message containing a CC set; setting up a connection with the eNB through the CC set of the user equipment when the received CC set is the same as the CC set of the user equipment, or when all the CCs are included in the received CC set; and changing the CC set of the user equipment to the received CC set and setting up the connection with the eNB through the changed CC set when the received CC set is different from the CC set of the user equipment.

Abstract: Disclosed are user equipment and a base station in a carrier aggregation system, and a call admission method thereof. The user equipment includes a plurality of physical layers, and the base station provides multiple component carriers. When messages for connection setup are transmitted and received between the user equipment and base station, the messages include information about what component carriers are selected by the physical layers, information about what component carriers are selectable by the physical layers, and information about calculations for uplink timing alignment, and call admission control and load balancing is performed based on the information included in the messages. Accordingly, in the carrier aggregation system, quicker call admission and load balancing are achieved.

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: The present invention relates to a handover method between systems of a multi-mode terminal. A multi-cast based protocol is added to an Internet protocol (IP) based wireless network to cooperate with the wireless access protocol of the terminal. In addition, minimized processes are added to use the wireless access protocol having wide area coverage. Accordingly, the handover between the systems may be performed while packet loss or service delay caused by a movement of a user may be minimized, and terminal complexity may not be increased.

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: Disclosed is an apparatus using a battery and a passive device, and a communication method thereof. In the wireless communication system, a coordinator has an active communication device for supporting active communication, and a passive device for supporting passive communication to wirelessly transmit power to a communication device. The communication device includes a memory and a passive communication device using the power received from the coordinator in a wireless manner in the active communication device operated with the battery, and stays in a passive communication idle state during a period allowing passive communication. The operation of the passive communication device is transmitted to the active communication device via an interrupt device so as to cause an active/passive communication state transition depending on the communication state.

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: 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: The present invention relates to a multi-mode communication system and a method thereof. The multi-mode communication system uses a first mode among a plurality communication modes for accessing a first mobility control entity (MCE) among a plurality of MCEs, and communicates data with the first MCE. The multi-mode communication system receives a paging request that has been transmitted from a multi-mode control entity (MMCE) for accessing a second MCE from the first MCE and analyzes the paging request, and puts the first mode into a sleep mode and a second mode for accessing the second MCE into an awake mode based on the analysis. Subsequently, multi-mode UE accesses the second MCE by using the second mode in the awake mode. According to the present invention, an MMCE for multi-mode control is provided to integrate and manage an idle state for each access mode of multi-mode user equipment, thereby minimizing power consumption due to access of the multi-mode UE to a radio access system.

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: A hard handoff method between asynchronous CDMA (code division multiple access) system and synchronous CDMA system is provided. A hard handoff method between asynchronous CDMA (code division multiple access) system and synchronous CDMA system in accordance with an embodiment of the present invention includes following steps. First step is to transmit asynchronous CDMA channels from synchronous CDMA base stations with a purpose of synchronizing handoff time at synchronous CDMA base station and code used at synchronous CDMA base station. The transmission is done by a mobile terminal that is in communication with an asynchronous CDMA base station. The transmission is a part of handoff process and the mobile terminal performs hard handoff to synchronous CDMA base station. Second step is to report measured result to the asynchronous CDMA base station on the basis of intensity of asynchronous CDMA pilot channel received from an adjacent synchronous CDMA base station. The reporting is done by the mobile terminal.

Abstract: Disclosed is an apparatus using a battery and a passive device, and a communication method thereof. In the wireless communication system, a coordinator has an active communication device for supporting active communication, and a passive device for supporting passive communication to wirelessly transmit power to a communication device. The communication device includes a memory and a passive communication device using the power received from the coordinator in a wireless manner in the active communication device operated with the battery, and stays in a passive communication idle state during a period allowing passive communication. The operation of the passive communication device is transmitted to the active communication device via an interrupt device so as to cause an active/passive communication state transition depending on the communication state.

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.