Patent application number | Description | Published |
20100091710 | METHOD OF PROVIDING IP MOBILITY USING SCTP SIGNALING IN 3GPP BASED NEXT GENERATION MOBILE COMMUNICATION NETWORK - Provided is a method of providing IP mobility using SCTP (Stream Control Transmission Protocol) signaling in a 3GPP (3 | 04-15-2010 |
20100272068 | METHOD FOR SUPPORTING MULTIPLE INTERFACES IN PROXY MOBILE IPV6 - The present invention is related to a method for managing mobility of a mobile node and a system using the method employing Proxy Mobile IP technology. A method for managing mobility of a mobile node and a system using the method according to the present invention minimizes overhead imposed on LMA (Local Mobility Anchor) when a mobile node carries out handover or multiple connections and complements a drawback observed when LMA of Proxy Mobile IP carries out multiple connections. To achieve the above advantages, in a method for managing mobility of a mobile node and a system using the method according to the present invention, LMA and MAG utilizes connection type information of a mobile node. | 10-28-2010 |
20100330989 | TERMINAL AND METHOD FOR CONTROLLING CELL SEARCHING THEREOF - A cell search method for a terminal capable of cell search control includes: receiving a message including first cell search information from a macro cell base station that manages a macro cell; updating second cell search information stored in the terminal based on the first cell search information; and searching for an accessible cell based on the updated second cell search information. | 12-30-2010 |
20110038313 | ENHANCED COMMUNICATION APPARATUS FOR PROVIDING ENHANCED CONCATENATION, SEGMENTATION AND REASSEMBLY OF SERVICE DATA UNITS - Provided is an enhanced communication apparatus. The enhanced communication apparatus may enable a Packet Data Convergence Protocol (PDCP) layer unit to perform a part of a concatenation function, a segmentation function, and a reassembly function of a Radio Link Control (RLC) layer unit that is a sublayer of Layer 2, and may decrease a number of Packet Data Convergence Protocol Packet Data Units (PDCP PDUs) to be processed by the RLC layer unit. | 02-17-2011 |
20110038335 | METHOD AND APPARATUS FOR MULTIPLEXING DATA - A method of multiplexing data of a terminal is provided. The method comprises receiving uplink resource allocation information about a service specific identifier for a specific service and information for the specific service comprising a radio bearer (RB) list to be transmitted through resources that are allocated according to the uplink resource allocation information from a base station and multiplexing data of the RB list to the allocated resources. | 02-17-2011 |
20110080885 | APPARATUS AND METHOD FOR MANAGEMENT OF EXTENSION CARRIER IN BASE STATION - Provided are an extension carrier managing apparatus of a base station and a method thereof. When an extension carrier is to be added in a terminal, the extension carrier managing apparatus may compare propagation characteristics of available extension carriers with a propagation characteristic of a stand-alone carrier being used by a terminal, and may set an extension carrier having a transmission range being less than or equal to the stand-alone carrier, and has a penetration loss being greater than or equal to the stand-alone carrier and thus, may set the extension carrier where a coverage-hole does not occur. | 04-07-2011 |
20110124357 | METHOD AND APPARATUS OF CONTENTION BASED UPLINK TRANSMISSION IN MOBILE COMMUNICATION SYSTEM - A contention based uplink transmission method may perform an uplink transmission using a radio resource corresponding to a contention based identity, for example, a contention based cell-radio network temporary identity (CB C-RNTI) suitable for the uplink transmission of a user equipment, based on radio channel quality and a size of uplink data desired to be transmitted. | 05-26-2011 |
20110141984 | METHOD AND SYSTEM FOR SCHEDULING SUBFRAME IN MOBILE COMMUNICATION RELAY SYSTEM - Provided is a subframe scheduling method in which a relay may transmit interval information of a service to a base station, and the base station may modify a location of a subframe based on the interval information, and thereby preventing a quality deterioration occurring due to a retransmission failure. The subframe scheduling method may include: setting and transmitting, by a base station, subframe information; setting and implementing, by a relay, a service based on the subframe information; transmitting, by the relay, interval information of the service to the base station; modifying, by the base station, the subframe information based on the interval information; and transmitting, by the base station, the modified subframe information to the relay. | 06-16-2011 |
20110151911 | MULTIMEDIA BROADCAST/MULTICAST SERVICE SYSTEM, AND DATA TRANSMISSION AND RECEPTION METHOD THEREOF - A data transmission method of a Multimedia Broadcast/Multicast Service (MBMS) system is provided. The data transmission method includes scheduling multimedia data including a plurality of sub-frames to be transmitted for each of a plurality of scheduling intervals, generating scheduling information, and transmitting, in advance, the scheduling information to a terminal, so that the terminal may selectively receive a plurality of sub-frames corresponding to a first scheduling interval, based on the scheduling information. | 06-23-2011 |
20110202590 | METHOD OF RANDOMIZING OPERATION START POINT IN TIME OF MACHINE TYPE TERMINAL IN MOBILE COMMUNICATION SYSTEM - Provided is a machine type communication terminal that may decrease load of a network and a server by performing an operation at different points in times. The machine type communication terminal may transmit data to the server via the network. A plurality of machine type communication terminals, the network, and the server may randomize operation start points in times of the machine type communication terminals in order to differentiate the operation start points in times. | 08-18-2011 |
20120155406 | METHOD OF TRANSMITTING DATA IN MACHINE TYPE COMMUNICATION DEVICE AND MOBILE COMMUNICATION SYSTEM USING THE SAME - Provided is a method of transmitting data in at least one machine type communication (MTC) device belonging to an MTC group identified by a unique identity according to application features. The method includes setting, by at least one MTC device belonging to the MTC group, unique transmission latency; waiting, by the MTC device, for the set transmission latency and then receiving information on uplink resources allocated to each MTC group identity from a base station; and transmitting, by the MTC device, uplink data using the allocated uplink resources. | 06-21-2012 |
20120163311 | DATA TRANSMISSION METHOD FOR USE IN MOBILE COMMUNICATION SYSTEMS - Disclosed is a data transmission method for use in mobile communication systems that can rapidly transmit a small amount of data and improve the performance of the entire system by reducing signaling overhead. A machine-type communication (MTC) terminal transmits a random access preamble message to a base station after selecting a predetermined preamble from a preamble group. The MTC terminal receives a random access response message including uplink (UL) resource allocation grant information from the base station. The MTC terminal performs scheduled transmission including data on the basis of the UL resource allocation grant information. | 06-28-2012 |
20120294281 | DATA DELIVERY METHOD PERFORMED IN RECEIVING APPARATUS OF MOBILE COMMUNICATION SYSTEM - Provided is a data delivery method performed in a receiving apparatus of a mobile communication system. Protocol data units (PDUs) are received, and service data units (SDUs) are extracted from the received PDUs and delivered to an upper layer in real time. Alternatively, it is determined whether a PDU gap, in which PDUs are not received in sequence, has occurred on the basis of sequence numbers (SNs) of received PDUs, a reordering timer (t_Reordering) is started when a PDU gap has occurred, and at least one SDU is extracted from at least one PDU, which have been received already, and delivered to an upper layer of radio link control (RLC) when the reordering timer expires and no PDU corresponding to the PDU gap is received. | 11-22-2012 |
20130084868 | SYSTEM AND METHOD FOR MULTI-HIERARCHICAL CELL CONFIGURATION - Provided is a system and method for configuring a multi-hierarchical cell in which a large-scale mobile backhaul technology and a small cell technology are combined. A mobile backhaul may increase a transmission capacity of a wireless backhaul using a super high frequency (SHF)/extremely high frequency (EHF) band, rather than a cellular band having a limitation in extending frequency resources, and a small group cell to be formed at a final end of the mobile backhaul may be configured by fixed group cells or mobile group cells depending on a radio environment, using a moving relay, wireless fidelity (WiFi), femto-cells, and the like, whereby cells may be miniaturized effectively, and a relatively great capacity of a wireless system may be provided to a subscriber. | 04-04-2013 |
20130202309 | METHOD OF PERFORMING HANDOVER IN WIRELESS OPTICAL COMMUNICATION AND MOBILE STATION USING THE SAME - In a wireless optical communication system, while a mobile station including a wireless optical transmitting/receiving apparatus, i.e., an optical mobile station (OMS), is mounted in a moving object and moves, the mobile station performs handover from a previous optical base station (OBS) to a new OBS. Here, the mobile station may include at least one OMS, and when the mobile station includes two OMSs, soft handover is performed, and when the mobile station includes one OMS, hard handover is performed. | 08-08-2013 |
20140113545 | WIRELESS RELAYING METHOD, METHOD OF CONTROLLING RELAY MODE, AND WIRELESS RELAY APPARATUS - Provided are a wireless relaying method, a method of controlling a relay mode, and a wireless relay apparatus using the wireless relaying method. The wireless relaying method of a relay node (RN) includes operating in an amplify-and-forward (AF) mode of amplifying and forwarding a received signal upon setup, broadcasting identifier (ID) information on the RN, and, when a mode change message is received from an evolved node-B (eNB), changing an operating mode to a decode-and-forward (DF) mode. Accordingly, it is possible to improve resource efficiency while having an advantage of minimum delay time for relay. | 04-24-2014 |
20140120926 | METHOD OF OPERATING BASE STATION AND TERMINAL IN CELLULAR TELECOMMUNICATION SYSTEM FOR OPERATING MULTIPLE BEAMS - Provided is an operation method of a cellular telecommunication system for operating multiple beams. In an operation method of a base station, a beam identifier (ID) is allocated to each of the multiple beams, and a terminal reports a beam ID of a selected beam to the base station. When the operation method of the cellular telecommunication system is used, the base station can rapidly sense the entry of the terminal into a specific beam area. Even when the terminal moves between beam areas, it is possible to rapidly make a beam area change with a minimum overhead without performing random access again or performing a complex procedure such as a handover procedure. | 05-01-2014 |
20140153423 | METHOD FOR HANDOVER OF TERMINAL USING MULTI-CONNECTION IN CELLULAR COMMUNICATION SYSTEM - A method for handover of a terminal using a multi-connection in a cellular communication system is disclosed. The method for handover according to the present invention includes a multi-connection setting procedure of setting a connection to a second base station in addition to a connection to a first base station according to movement of a terminal in a direction from the first base station to the second base station, and a connection release procedure of releasing the connection to the first base station. Specifically, the present invention may be applied in a multi-beam management environment of super high frequency (SHF) and extremely high frequency (EHF) bandwidths, and may obtain an effect of decreasing signaling overhead and process latency of a conventional handover method. | 06-05-2014 |
20140169265 | COMMUNICATION METHOD OF BASE STATION AND TERMINAL IN COMMUNICATION SYSTEM INCLUDING RELAY - A communication method of a terminal and a base station including a relay is provided. When the terminal attempts a connection to the base station, relays on a communication path include and transmit identifiers thereof in a first message, and the relays and the base station can simply set a communication path to the terminal. When the base station transmits data to the terminal, if the base station includes and transmits an identifier of the terminal in the data, each relay that is located on a communication path forwards data through a preset communication path. | 06-19-2014 |
20150038148 | METHOD AND APPARATUS FOR HANDOVER BASED ON COOPERATION BETWEEN BASE STATIONS - A method and apparatus for handover based on cooperation between base stations are provided. When a message indicating handover completion is received from a terminal that has determined whether to perform handover and that has performed handover to a target base station, the target base station transmits a message requesting information on the terminal to a serving base station of the terminal. Then, the target base station receives information on the terminal from the serving base station and transmits data to the terminal. | 02-05-2015 |