Abstract: An apparatus and method for controlling a reverse data rate in a mobile station. The method including determining a bit of a multi-bit control channel information based on at least two of a current data rate, transmission power, and an amount of data stored in a buffer of the mobile station; and transmitting the multi-bit control channel information to a base station. The bit of the multi-bit control channel information is determined based on whether the mobile station has power available to transmit at a higher reverse data rate.

Abstract: The present invention relates to a method for processing information between mobile communication systems in order to prevent the degradation of user-experienced performance when different types of mobile communication networks are used. The method for processing information at user equipment (UE) to improve user-experienced performance of a mobile communication system includes performing a data communication through a first network and receiving, from a policy server, a routing policy including a validity condition which is information about a condition of designating a UE status for handover. The method further includes, in the handover, if a searched second network satisfies the validity condition, performing the data communication through the second network. Accordingly, a network for data transmission can be selected using a routing policy created in consideration of a UE status or a network status, thereby enhancing user-experienced performance.

Abstract: The present invention relates to a method for controlling system overload in a wireless communication system. The method comprises: a first step in which a mobility management entity (MME) that has received a tracking region update request message from a first terminal transmits a location update request message to a home subscriber server (HSS); a second step in which, if the HSS has determined that a system overload has occurred, the HSS sets MME-backoff time for preventing the transmission of a request message to the HSS, and transmits a location update rejection message including said MME-backoff time to the MME; and a third step in which the MME drives a backoff timer corresponding to said MME-backoff time and rejects a TAU update request message from a terminal received prior to the completion of the driving of the backoff timer.

Abstract: A regional access control method is provided in a Mobility Management Entity (MME) for network access for a User Equipment (UE) that performs Machine-to-Machine (M2M) communication. An access request message and location information of the UE are received from a base station. The access request message is transmitted to the MME in response to reception of the access request message at the base station from the UE. A location of the UE that is determined based on the location information of the UE, is registered in a Home Subscriber Server (HSS). An allowed list of the UE is obtained from the HSS. It is determined whether the location information of the UE is registered in the allowed list.

Abstract: A method for supporting local access and voice communication by a User Equipment (UE) in a wireless network, the method comprises transmitting a message for requesting a Circuit Switch (CS)-based voice service to a eNode B, the UE having a local Internet Protocol (IP)-based Packet Data Network (PDN) connection, and receiving, from the eNode B, a message including information indicating that the local IP-based PDN connection is suspended, if a server managing mobility of the UE determines that suspending the local IP-based PDN connection is supported in a local gateway.

Abstract: A system is provided that provides a voice call service over a Circuit Switching (CS) domain to a User Equipment (UE) that was receiving a service in a Packet Switching (PS) domain. A Mobile Management Entity (MME) sends a paging message to the UE to provide a service in the CS domain. The MME sends a suspend request message requesting suspension of the service being provided to the UE in the PS domain, upon receiving a report message indicating that the UE has switched to the CS domain. A gateway suspends the service in the PS domain upon receiving the suspend request message from the MME.

Abstract: Provided is a method for transmitting traffic control information by an Evolved Node B (ENB) in a wireless communication system. The method includes transmitting congestion state information a traffic control node. The congestion state information is used to control traffic for a User Equipment (UE) that is accessing the ENB. And, the congestion state information includes information about a congestion state of the ENB, and is included in a packet header transmitted from the UE.

Abstract: A handover method and apparatus for facilitating a handover of a user equipment to a femto cell in a wireless communication system supporting both the femto and macro cells. When a handover condition is detected, the user equipment acquires identity information of a target femto cell base station from system information transmitted by the target femto cell base station, decides whether to handover to the target femto cell base station, based on the identity information; and transmits a measurement report message including the identity information to a serving base station of the user equipment, when the handover is to be made.

Abstract: A method and an apparatus for transmitting data in a wireless communication network are provided. A base station having information of an idle mode user equipment transmits a connecting operation mode to the user equipment when the idle mode user equipment is connected to the base station. The user equipment transmits a small amount of data together with a connection request completion message to the base station. The base station transmits, over a network, the data received from the user equipment, without being interlinked with a mobility management entity, and the user equipment returns back to an idle operation mode after data transmission. Thus, the overhead required to support signaling of the base station for acquiring context information of the user equipment can be reduced in order to provide the user equipment with an efficient data transmission environment.

Abstract: The present invention relates to a mobile communication system, and to a method for managing terminal paging in the system. A paging method of a terminal is characterized by comprising the steps of: receiving, from a base station, both a local counter value for synchronization with the base station and a local ID that the base station has allocated to the terminal; synchronizing the base station and the counter using the local counter value so as to enter an idle state; and checking the local counter and a paging trigger message contained in the subframe corresponding to the local ID. According to the present invention, local IDs are each allocated to the respective multiple MTC terminals, and therefore trigger periods can be efficiently managed in a network. Further, the multiple MTC terminals can be grouped using the allocated local IDs, thus achieving advantages of an increased number of MTC terminals which can be managed in the network.

Abstract: Provided is a method for managing a group key in a key distribution center. The method includes: receiving a key request from a mobile device; generating a private key for the mobile device using information about a withdrawal time included in the key request; generating a public key and a verification key for the mobile device; and transmitting at least one key including the generated key to the mobile device.

Abstract: A method for controlling device triggering in a mobile communication system includes registering a default urgent level of a terminal when the terminal is connected, receiving a device trigger register including urgent level information transmitted from an application server, and setting the received urgent level in a packet filter, and comparing, upon reception of a downlink data packet from the application server, a default urgent level and an urgent level of the application server to determine whether to transmit a downlink data notification. The method further includes receiving a device trigger register including wait time information transmitted from an application server, and then setting the received wait time in the packet filter, and buffering during the wait time upon reception of the downlink data packet from the application server, and then determining a downlink data notification transmission upon expiration of the wait time.

Abstract: Disclosed is an apparatus and a method of establishing an interface between entities in a local network. A stand-alone local H(e)NB network has a structure in which one or more H(e)NBs are separated from one or more L-GWs in order to support mobility of a user equipment. The one or more H(e)NBs or the one or more L-GWs provide an information management device with information necessary for establishing an interface and receive information necessary for establishing the interface with a target entity as a response to the provision of the information. The one or more H(e)NBs or the one or more L-GWs establish the interface with the target entity based on the received information.

Abstract: The present invention relates to a method and apparatus for updating a key for encrypting multicast data in a wireless communication system. The method of the present invention is characterized by comprising: an information receiving step of receiving information on a group entry time and a group exit time from users who have newly entered an arbitrary group including at least one subgroup; a grouping step of grouping the users using the information on the group entry time and the group exit time; and a key transmission step of either transmitting, to the newly-entered users, keys related to the group and the subgroups, or updating, for the remaining users of the subgroups, both the key related to the subgroup to which the user exiting the group belongs and the key of the group and then transmitting the updated keys to the users of the subgroups.

Abstract: An apparatus and method for controlling a reverse data rate in a mobile station. The method includes determining whether the mobile station has sufficient power to transmit at an increased data rate compared to a current data rate, and transmitting a determination result to a base station.

Abstract: A method and an apparatus control a UE that supports a dual mode for controlling power consumption. A wireless local area network (WLAN) modem of a user equipment (UE) automatically turns on when the UE detects that the UE has entered into an area (e.g. home) that employs a home network including a femto Node B and a WLAN access point (AP). The method and apparatus may also determine whether a femto identifier received from a Node B of a home network is an identifier registered in a WLAN turn-on list stored in the UE. If the femto identifier is registered in the WLAN turn-on list, the WLAN modem of the UE is turned on.

Abstract: According to an embodiment of the present invention, the invention discovers an address of a LGW, which can be sued in HeNB, determines whether session continuity is supported or not when a terminal using the LGW is moved to another HeNB in a network wherein a structure supporting Session Continuity and a structure not supporting Session Continuity are mixed, and processes active mode mobility and idle mode mobility based on the same. To this end, an embodiment of the present invention provides a method for transmitting the LGW and HeNB ID association information through DNS and S1AP, and a method for processing idle mode mobility and active mode mobility by using LGW information and HeNB ID association information in MME.

Abstract: The present invention relates to a wireless communication system and a method for managing a cache server in the wireless communication system, the invention includes a step for checking a regional cache server to transmit contents when a DNS (Domain Name System) request a message for receiving contents acquired from a terminal, and a step for transmitting the contents by the cache server according to a contents request message received from the terminal. These steps can prevent the same data from being transmitted several times through a wireless communication network. Therefore, network usage associated with the service is reduced, and the network can be used more efficiently.

Abstract: The present invention relates to a method and an apparatus for transmitting contents in a mobile communication network. According to one embodiment of the present invention, the method for receiving the contents of user equipment (UE) in a mobile communication system equipped with a local server which is connected to a base station (eNB) and copies partial contents of an external content server and maintains the copied contents, can include: a content determination step of determining whether the selected contents are the contents provided from the local server when a content selection input is received; a request transmission step of transmitting a content transmission request message to the base station (eNB) when the contents are the contents provided from the local server; and a content reception step of receiving the contents from the base station.

Abstract: A method and system are provided for transmitting broadcast service data in a wireless communication system using an Orthogonal Frequency Division Multiple Access (OFDMA) scheme in which data transmission is achieved through a downlink and an uplink within one frame. The system being connected to a broadcast server. The system and method include allocating a connection identifier (CID) to each broadcast service for identification of a broadcast service packet transmitted over the downlink, and transmitting broadcast service information for each broadcast service; and receiving a broadcast packet from the broadcast server, and transmitting a physical layer transmission information element (DL-MAP) including a broadcast service CID for the broadcast packet through the downlink0.