Patent application number | Description | Published |
20090296655 | MOBILE COMMUNICATION SYSTEM AND METHOD - A mobile communication system enables data reception in correct order, with regard to a reversed data order caused by a route change in data transfer from a source base station to a target base station and in direct transmission from a gateway to a target base station is provided. In the mobile communication system, at the time of handover processing performed accompanying a movement of the user equipment from the source base station to the target base station, the source base station transfers to the target base station, a part of packet data not yet transmitted to the user equipment, among packet data received from the upper-level device, and when transferring the part of packet data, the source base station assigns transfer start information, indicating a start of transfer, to a header in a top packet of the untransmitted packet data. | 12-03-2009 |
20090303947 | MOBILE COMMUNICATION SYSTEM, MOBILE COMMUNICATION METHOD, AND COMMUNICATION APPARATUS - A mobile station-side acquirer acquires the MTU value notified by a base station-side notifier and stores the acquired MTU value in a mobile station-side memory. A mobile station-side transmitter transmits data to a destination with the data size set to be smaller than or equal to the MTU value stored in the mobile station-side memory. A base station-side acquirer acquires the MTU value of the transmission path and stores the acquired MTU value in a base station-side memory. The base station-side notifier notifies the mobile station of the MTU value stored in the base station-side memory | 12-10-2009 |
20100031015 | IP Network Communication Method Having Security Function, And Communication System - An IP network communication system which applies encryption with a reduced processing delay caused by a CPU load which is increased by the application of IPsec etc., and with reduced degradation of data transmission efficiency in a network, is provided. The IP network communication system having a security function includes an encryption processing part to encrypt a predetermined area range of one packet to be transmitted, and not to encrypt a residual area of the one packet; and a transmission part to transmit the packet encrypted by the encryption processing part through a tunnel for encryption. | 02-04-2010 |
20100054244 | TIME SYCHRONIZATION METHOD AND RELAY APPARATUS - A time synchronization method for synchronizing times of a first apparatus and a second apparatus includes transmitting, by the first apparatus, a packet to the second apparatus, the packet including the time of the first apparatus, providing, by a relay apparatus that relays the packet, a value to the packet, the value indicating a reception time upon the reception of the packet, providing, by the relay apparatus, a difference between the value provided to the packet in the providing of reception time and a current time to the packet upon the transmission of the packet, the difference serving as a delay value, and executing, by the second apparatus, a control for time synchronization based on the time of the first apparatus included in the packet and the delay value provided to the packet. | 03-04-2010 |
20110002224 | APPARATUS AND METHOD FOR CONTROLLING CONGESTION OCCURRENCE IN A COMMUNICATION NETWORK - Congestion occurrence in a communication network is controlled when performing data transmission based on a first protocol between a first edge node and a second edge node. The first edge node detects a first congestion state identifying a congestion state of the first edge node, and sets first congestion information identifying the detected first congestion state to a packet that is to be transmitted from the first edge node to the second edge node. The first edge node transmits the packet having the first information to the second edge node at the time when the first edge node performs data transmission based on a second protocol from the first edge node to the second edge node, wherein the second protocol is a connectionless protocol positioned at a protocol layer higher than the first protocol. | 01-06-2011 |
20110228787 | APPARATUS AND METHOD FOR ESTABLISHING CONNECTIONS WITH A PLURALITY OF VIRTUAL NETWORKS - A communication system provides one or more services using a plurality of virtual networks provisioned in a network. A communication device belonging to at least one of the plurality of virtual networks is provided with service-ID associating information in which a service-ID identifying a service is associated with at least one virtual network identifier each identifying a virtual network that is included in the plurality of virtual networks and is to be used for providing the service. A base station transmits a service-ID association request to the communication device which then returns the stored service-ID associating information to the base station. Thereafter, the base station selects, from among the plurality of virtual networks, at least one virtual network that is to be used for providing a service identified by the service-ID, based on the service-ID associating information, and establishes a connection with the selected at least one virtual network. | 09-22-2011 |
20120300778 | COMMUNICATION SYSTEM, NETWORK APPARATUS, GATEWAY APPARATUS, COMPUTER PROGRAM, DATA TRANSMISSION METHOD AND DATA TRANSFER METHOD - A network apparatus, wherein a bearer is set between the network apparatus and a gateway apparatus connects a radio access network and a core network, including: a tunneling processing unit that encapsulates user data in accordance with a tunneling protocol; a data combining unit that generates combined data in which a plurality of the encapsulated user data to be transmitted to the same the gateway apparatus are combined; a header generation unit that generates a header of the network protocol storing the bearer identifier of the bearer transmitting user data included in the combined data; and a transmission unit that transmits a packet of the combined data having the header added thereto to the gateway apparatus. | 11-29-2012 |
Patent application number | Description | Published |
20090291337 | HYDROGEN FORMING APPARATUS, FUEL CELL SYSTEM AND METHOD OF CONTROLLING HYDROGEN FORMING APPARATUS - A hydrogen generating apparatus including a reformer which performs a reforming reaction using a material and steam to generate hydrogen-containing gas; a water evaporator which generates the steam supplied to the reformer; a first water pathway through which reforming water to be supplied to the water evaporator flows; a pump which supplies the reforming water to the water evaporator | 11-26-2009 |
20100068573 | HYDROGEN GENERATOR AND FUEL CELL SYSTEM - A hydrogen generator ( | 03-18-2010 |
20100074838 | HYDROGEN GENERATOR, METHOD FOR OPERATING HYDROGEN GENERATOR, AND FUEL CELL SYSTEM - A hydrogen generator includes: a reformer ( | 03-25-2010 |
20100081021 | FUEL CELL SYSTEM - A fuel cell system of the present invention includes: a hydrogen generator ( | 04-01-2010 |
20100285377 | HYDROGEN GENERATOR AND FUEL CELL SYSTEM INCLUDING SAME - A hydrogen generator includes: a reformer ( | 11-11-2010 |
20100291451 | FUEL CELL SYSTEM - A fuel cell system of the present invention comprises a fuel cell ( | 11-18-2010 |
20100304247 | HYDROGEN GENERATOR, FUEL CELL SYSTEM COMPRISING HYDROGEN GENERATOR, AND OPERATION METHOD OF HYDROGEN GENERATOR, AND OPERATION METHOD OF FUEL CELL SYSTEM - A hydrogen generator comprises a reformer configured to generate a hydrogen-containing gas through a reforming reaction in an internal space thereof using a material gas and steam; a material gas supply passage through which the material gas is supplied to the reformer; a material gas supplier which is provided at the material gas supply passage to supply the material gas to the reformer; a first valve configured to open and close the material gas supply passage; an evaporator configured to generate a steam supplied to the reformer; a water supplier configured to supply water to the evaporator; a communicating passage for allowing the reformer to communicate with atmosphere; a second valve configured to open and close the communicating passage; and a controller configured to stop the material gas supplier and the water supplier and close the first valve and the second valve at shutdown of the hydrogen generator; and open the second valve prior to opening the first valve when the material gas supplier resumes supply of the material gas to the reformer after the shutdown. | 12-02-2010 |
20110195322 | HYDROGEN GENERATOR, FUEL CELL SYSTEM, AND METHOD FOR OPERATING HYDROGEN GENERATOR - A hydrogen generator ( | 08-11-2011 |
20110212375 | HYDROGEN GENERATOR AND FUEL CELL SYSTEM COMPRISING THE SAME - A hydrogen generator of the present invention includes a reformer ( | 09-01-2011 |
20120021313 | FUEL CELL SYSTEM AND METHOD FOR OPERATING THE SAME - A fuel cell system of the present invention includes: a fuel cell ( | 01-26-2012 |
20120021315 | FUEL CELL SYSTEM - A fuel cell system ( | 01-26-2012 |
20120021321 | FUEL CELL SYSTEM - A fuel cell system ( | 01-26-2012 |
20120028144 | FUEL CELL SYSTEM AND OPERATING METHOD THEREOF - Provided are a fuel cell system capable of shortening the wait time of an observer who confirms set points of a system interconnection protective device before starting a system interconnection operation, and a method for operating the fuel cell system. | 02-02-2012 |
20120034537 | FUEL CELL SYSTEM - A fuel cell system according to the present invention includes: a deodorizing device ( | 02-09-2012 |
20120064421 | HYDROGEN GENERATION DEVICE AND FUEL CELL SYSTEM EQUIPPED WITH SAME - A hydrogen generation apparatus according to the present invention includes: a hydrogen generator configured to generate a fuel gas through a reforming reaction by using a raw fuel; a combustor configured to heat the hydrogen generator; an on-off valve configured to open/block a gas passage through which the gas that is sent out from the hydrogen generator is supplied to the combustor; a combustion air supply device configured to supply combustion air to the combustor; an ignition device provided at the combustor; and a controller. In a case where flame extinction has occurred at the combustor during generation of a hydrogen-containing gas in a start-up process, the controller performs an ignition operation of the ignition device with the on-off valve kept opened. | 03-15-2012 |
20130196242 | FUEL CELL SYSTEM - A fuel cell system ( | 08-01-2013 |
20140050996 | HYDROGEN GENERATOR, FUEL CELL SYSTEM, AND METHOD OF OPERATING HYDROGEN GENERATOR - A hydrogen generator ( | 02-20-2014 |
20140057185 | HYDROGEN GENERATOR, OPERATING METHOD OF HYDROGEN GENERATOR, AND FUEL CELL SYSTEM - A hydrogen generator associated with the invention comprises a hydro-desulfurizer ( | 02-27-2014 |
20140377672 | HYDROGEN GENERATOR AND FUEL CELL SYSTEM - A hydrogen generator includes: a reformer configured to generate a hydrogen-containing gas by using a raw material; a hydro-desulfurizer configured to remove a sulfur compound in the raw material; a recycle passage through which the hydrogen-containing gas is supplied to the raw material before the raw material flows into the hydro-desulfurizer; a booster configured to supply the raw material to the reformer; a raw material supply passage through which the raw material to be supplied to the reformer flows; and an ejector which is disposed on the raw material supply passage provided downstream of the booster and upstream of the hydro-desulfurizer and into which the hydrogen-containing gas flows from the recycle passage. | 12-25-2014 |
20150072253 | HYDROGEN GENERATOR AND FUEL CELL SYSTEM - A hydrogen generator comprises a reformer configured to generate a hydrogen-containing gas through a reforming reaction using a raw material; a hydrodesulfurization unit configured to remove a sulfur compound from the raw material; a recycle passage configured to flow therethrough the hydrogen-containing gas to be added to the raw material in a state before the raw material flows into the hydrodesulfurization unit, the recycle passage having a downward slope; and a water drain passage configured to discharge condensed water generated in the downward slope of the recycle passage. | 03-12-2015 |