Patent application number | Description | Published |
20090080391 | Network interworking system and method for negotiating qos in network interworking system - 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. | 03-26-2009 |
20100120431 | INTER-CARRIER MEMBER HANDOVER APPARATUS AND METHOD - Provided are an inter-carrier member handover apparatus and method. In the inter-carrier member handover apparatus and method, data is transmitted or received by allocating a plurality of carriers to a single mobile terminal, a carrier aggregation, which includes a plurality of carrier members that process the allocated carriers, is managed, and a handover between the carrier members in the managed carrier aggregation is processed when the handover is required. Therefore, an intra-base station handover can be performed when a mobile terminal and a base station exchange data using a plurality of carrier frequency bands. | 05-13-2010 |
20110105140 | APPARATUS AND METHOD FOR CONNECTION SETUP OF COMPONENT CARRIER IN MOBILE COMMUNICATION SYSTEM OF CARRIER AGGREGATION ENVIRONMENT - Provided is an apparatus and method for setting up a connection of a component carrier (CC) in a mobile communication system of a carrier aggregation (CA) environment. In the mobile communication system operating the CA environment, it is possible to change a CC in an initial connection while maintaining a connection state. When a radio link failure and the like occurs, it is possible to quickly change a disconnected CC using a connected component carrier. | 05-05-2011 |
20110151882 | IDLE-TO-ACTIVE STATE SHIFT APPARATUS IN CARRIER AGGREGATION ENVIRONMENT - Provided is a technology that enables a terminal to quickly perform an idle-to-active state shift and to quickly perform a handover using a carrier aggregation characteristic. The terminal may attempt a Radio Resource Control (RRC) connection establishment using a plurality of carrier components. When the RRC connection establishment using one of the carrier components succeeds, the terminal may transmit an RRC reconfiguration complete message to a base station. | 06-23-2011 |
20110164588 | MOBILE TERMINAL AND METHOD OF PERFORMING HANDOVER - Enclosed are a mobile terminal and a method of performing handover. The mobile terminal is connected to a selected network among a plurality of networks sensed in accordance with the movement of the mobile terminal so that handover is performed between different networks and that a service used by the mobile terminal is continuously provided. Therefore, the convenience of a user is improved and network utility is improved. | 07-07-2011 |
20120163296 | METHOD OF TRANSMITTING SMALL AMOUNT OF UPLINK DATA AND METHOD OF RECEIVING SMALL AMOUNT OF UPLINK DATA - Disclosed is a method of transmitting and receiving a small amount of uplink data. A method of transmitting uplink data includes detecting uplink data to be transmitted, determining whether or not uplink data transmission is necessary only once, transmitting a service request message including information instructing that a data radio bearer not be generated when it is determined that uplink data transmission is necessary only once, starting a radio resource control (RRC) connection setup process, and performing the uplink data transmission once using a signaling radio bearer without generating the data radio bearer with reference to the information instructing that the data radio bearer not be generated, during the RRC connection setup process, when it is determined that \ uplink data transmission is necessary only once. | 06-28-2012 |
20120165058 | APPARATUS AND METHOD FOR CONTROLLING RANDOM ACCESS OF MACHINE TYPE COMMUNICATION DEVICE AND WIRELESS COMMUNICATION SYSTEM PROVIDING MACHINE TYPE COMMUNICATION SERVICE - Provided are an apparatus and method for controlling random access of a machine type communication (MTC) device in a wireless communication network providing an MTC service, and a wireless communication system providing an MTC service. The method includes inserting, at a base station, information about a random access preamble group for an MTC device and information about a random access time for an MTC device in system information (SI), and transmitting, at the base station, the SI to at least one MTC device. | 06-28-2012 |
20130148526 | APPARATUS AND METHOD FOR CONTROLLING GROUP SETTING IN DEVICE-TO-DEVICE COMMUNICATION - Provided is a device-to-device (D2D) group communication control method. In the D2D group communication control method, D2D group session information is generated and transmitted when a D2D group service request or a D2D group communication sensing report is received. When a D2D group session confirmation message is received according to the D2D group service request or the D2D group communication sensing report, D2D group session setup is determined to be successful. A D2D group service response message or a D2D group service start message is transmitted to at least one device belonging to a D2D group for which the D2D group session setup is completed. Thereby, centralized D2D group session management can be performed. Accordingly, the number of connections of separate direct communication can be reduced and hence a signaling load can be reduced. | 06-13-2013 |
20130150061 | DEVICE-TO-DEVICE GROUP COMMUNICATION METHOD AND DEVICE USING THE SAME - Provided are a device-to-device (D2D) group communication method and a device using the same. The method includes transmitting a scheduling request for D2D group communication to a base station, receiving first radio resource information for a status report of D2D data to be transmitted from the base station, transmitting a D2D buffer status report to the base station through a first radio resource, receiving second radio resource information including D2D resource allocation information necessary for the D2D group communication from the base station, and transmitting control information for the D2D group communication including a D2D group identifier (ID) as a device ID and D2D user data to two or more communication partner devices belonging to the D2D group. | 06-13-2013 |
20140162633 | METHOD OF PROVIDING SERVICE CONTINUITY BETWEEN CELLULAR COMMUNICATION AND DEVICE-TO-DEVICE COMMUNICATION - A method of providing service continuity between cellular communication and device-to-device communication is disclosed. A procedure for switching between cellular communication and device-to-device communication according to an example embodiment of the present invention may include transferring, by a gateway, a D2D bearer creation request message to an MME, transferring, by the MME, the D2D bearer creation request message to a base station, mapping, by the base station, D2D bearer QoS to D2D radio bearer QoS and transmitting an RRC connection reconfiguration message to terminals, receiving, by the base station, an RRC connection reconfiguration completion message indicating creation of a D2D radio bearer from the terminals, transmitting, by the base station, a D2D bearer creation response message indicating creation of a D2D bearer to the MME, and transferring, by the MME, the D2D bearer creation response message to the gateway. | 06-12-2014 |
20140194115 | METHOD FOR DISCOVERY IN DEVICE-TO-DEVICE COMMUNICATIONS AND APPARATUS FOR THE SAME - A method for discovery in device-to-device communications and an apparatus for the same are disclosed. The method performed in a device-to-device server supporting device-to-device discovery between a discovery terminal and a discoverable terminal may include receiving a device-to-device discovery participation message from the discoverable terminal, requesting a gateway to measure a proximity between the discovery terminal and the discoverable terminal, receiving a proximity measurement result from the gateway, and requesting the discovery terminal and the discoverable terminal to initiate a procedure of device-to-device discovery when the proximity measurement result satisfies a predetermined threshold. Thus, the procedure of device-to-device discovery may be performed efficiently. | 07-10-2014 |
20150071256 | METHOD FOR SETTING SYNCHRONIZATION BETWEEN DEVICE-TO-DEVICE COMMUNICATION TERMINALS BASED ON CELLULAR COMMUNICATION SYSTEM - A method for setting synchronization between terminals performing device-to-device (D | 03-12-2015 |