Fujitsu Corporation

Showa Denko K.k.

Showa Denko Kabushiki Kaisha

Toyoda Gosei Co., Ltd.

Naotoshi Watanabe

Toshio Soumiya

Koji Nakamichi

Masafumi Katoh

Yoshiaki Ohta

Kazuhisa Obuchi

Yoshinori Tanaka

Yoshiharu Tajima

Ryuichi Takechi

Takeshi Kawasaki

Katsumasa Sugiyama

Michio Kusayanagi

Kenichi Kawarai

Yoshihiro Moteki

Satoshi Kakuma

Tomohiro Ishihara

Masato Okuda

Shunji Abe

Takashi Hatano

Yutaka Ezaki

Kenya Takashima

Toshiyuki Iwashita

Kenji Ozaki

Noboru Moriwaki

Tsuyoshi Masukawa

Hitoshi Funada

Kazuhiro Yoshida

Toshiyuki Sudo

Tetsuya Nishi

Hiroshi Tomonaga

Naoki Matsuoka

Yasuhiro Ooba

Yuzo Okuyama

Masahiko Maeda

Hichiro Hayami

Hidenori Hayashi

Kazunori Murata

Yuichi Sakon

Ryutaro Fujihira

Ichiro Sagae

Takao Mizuta

A determination method executed by a computer that serves as an authentication apparatus for a program that operates on a device, the determination method includes counting a number of times of execution of a first process related to the device and determining, in a case where an authentication request for the program that includes a number of times of execution of a second process in the device is received, whether or not it is required to verify the device based on a result of comparison between the number of times of execution of the first process and the number of times of execution of the second process.

Determination method, authentication apparatus, and storage medium

A communication system includes a first device configured to transmit first data, a second device, a third device, a fourth device, and a storage device configured to store correspondence information, and when the second device is in the first state, the second device transmits the first data to the address of the third device, and when the second device is in the second state, the second device transmits the first data to the fourth device, the second device notifies the fourth device of the address of the second device, the fourth device receives the first data and notifies the storage device of the address of the second device, the storage device notifies the fourth device of the address of the third device associated with the address of the second device based on the correspondence information, and the fourth device transmits the first data to the address of the third device.

Communication system, communication device, and communication method

A UE is a mobile station that communicates with a CSCF server. The UE includes a network IF and a mobile network service control unit. By using an IMS signaling bearer established between the UE and the CSCF server, the network IF registers the usage of a predetermined service in the CSCF server. After the usage of the service has been registered by the network IF, the mobile network service control unit releases the IMS signaling bearer. Furthermore, when the CSCF server detects the occurrence of the service to be provided to the UE, the mobile network service control unit re-establishes the released IMS signaling bearer in response to the request from the CSCF server, due to a notification sent from the application server to the UE indicating the occurrence of the service.

Wireless communication system, mobile station, server, and wireless communication method

A target cell extracting unit extracts a handover destination cell of a wireless communication terminal. A target cell notifying unit notifies first HO preparation information, which is information for handover of the wireless communication terminal including information about the handover destination cell, to an eNB accommodating the handover destination cell. A subsequent candidate cell notifying unit receives, from the eNB, information about a subsequent candidate cell, and notifying second HO preparation information including the information about the subsequent candidate cell to the eNB. A subsequent candidate cell extracting unit obtains the information about the handover destination cell from the received first HO preparation information, and extracts the subsequent candidate cell based on a state between the handover destination cell and another cell in wireless communication. A subsequent candidate cell notifying unit notifies the information about the subsequent candidate cell to the eNB.

Wireless communication system, wireless communication method, wireless base station, and wireless communication terminal

A control method in a mobile communication system, that includes configuring a discard timer corresponding to a service data unit (SDU) for discarding the SDU according to a value of the discard timer that indicates a time elapsed since the discard timer started at reception of the SDU; when a handover is performed, maintaining the value of the discard timer corresponding to the SDU and taking over the elapsed time of the SDU; and discarding the corresponding SDU when the value of the discard timer reaches a given value.

Method for dropping packet data, radio communication device, and mobile communication system

Identification information which identifies a specific area zone that is part of a cell of a radio base station is transmitted from the radio base station to a mobile terminal. Subsequently, when the mobile terminal is located at the area zone specified by the identification information, communication quality between the mobile terminal and the radio base station is measured by the mobile terminal, and the quality information indicating the measured communication quality is transmitted from the mobile terminal to the radio base station.

Communication quality measurement method, radio base station and mobile terminal, and radio communication system

A method including collecting position information indicating a position of an area to which a wireless communication service is not provided, transmitting the position information from the mobile terminal to a wireless base station using a random access procedure for setting up a communication channel between the wireless base station and the mobile station, and identifying the area which is within a cell range of the wireless base station and to which the wireless communication service is not provided.

Method for identifying area, wireless base station, mobile terminal, and wireless communication system

A control method in a mobile communication system, that includes configuring a discard timer corresponding to a service data unit (SDU) for discarding the SDU according to a value of the timer; maintaining the value of the discard timer corresponding to the SDU when a handover is performed without restarting or resetting the value of the discard timer; and discarding the corresponding SDU when the maintained value of the discard timer reaches a given value.

A base station controlling apparatusthat causes a plurality of base stationsto synchronously distribute a plurality of packet data to a mobile terminal, including: a receiver Sthat receives a plurality of packet data; a transition information generator Sthat generates transition information corresponding to a sequence number of packet data used for switching a compression state when the plurality of packet data are compressed; a compressor Sthat compresses the plurality of packet data based on the transition information; and a transmitter that transmits the plurality of compressed packet data to the plurality of base stations, and transmits the transition information to another base station controlling apparatus.

Base station controlling apparatus and communication system

A base station device that communicates wirelessly with a mobile terminal, including: an accepting portion that determines whether to be capable of accepting handover from another base station device to the base station device; a determination portion that, when the accepting portion determines to be capable of accepting the handover, determines whether to aggregate or separate bearers set between the another base station device and the mobile terminal; and a notifying portion that notifies the mobile terminal of a determination result of aggregation or separation of the bearers.

Base station device, base station controlling device, mobile terminal, communication system, and method for controlling base station device

A control method in a mobile communication system, that includes configuring a timer corresponding to packet data for discarding the packet data according to a value of the timer; maintaining the value of the timer corresponding to the packet data when a handover is performed without restarting or resetting the value of the timer; and discarding the corresponding packet data when the maintained value of the timer reaches a given value.

A node compares an address resolution result corresponding to first packet data that is sent by the user device for accessing a first content server and an address resolution result corresponding to second packet data having the sender of the first packet data as the local node. When the addresses are different, the node allocates the second address resolution result to the user device, and configures a communication path between the user device and a second content server indicated by the second address resolution result. The user device accesses to the second content server on the communication path using the allocated second address resolution result.

Packet communication system and packet communication method, and node and user device

A mobile communication system, that includes a buffer storing packet data to be sent; and a controller configured for discarding the packet data according to a value of a timer corresponding to the packet data, maintaining the value of the timer corresponding to the packet data when a handover is performed without restarting or resetting the value of the timer, wherein the discarding further includes discarding the corresponding packet data when the value of the timer reaches a given value.

A packet communication apparatus that carries out packet communication with a second packet communication apparatus via a logical connection through header processing of compressing or decompressing a packet header, the apparatus managing a first state machine of a first header processing state concerning a first packet flow of the connection and a second state machine of a second header processing state concerning a second packet flow of the connection; and controlling a state transition of a third state machine that is one of the first state machine and the second state machine on the basis of a state transition of a fourth state machine that is the other of the first state machine and the second state machine.

Packet communication apparatus and method for packet communication

The present invention provides a network security apparatus for monitoring telecommunication information flowing through a network and carrying out detection of, and/or protection from, an illegitimate intrusion to the network, comprising: an anomaly judgment unit for judging a presence or absence of an abnormality of the telecommunication information based on judgment reference information by using a statistical method; a learning unit for creating the judgment reference information from the telecommunication information; a first port for importing first telecommunication information currently from the network; a second port for importing second telecommunication information accumulated by a telecommunication information accumulation apparatus historically; and a telecommunication information allocation unit for allocating the first and second telecommunication information taken in respectively from the first and second ports to the anomaly judgment unit and the learning unit, wherein the learning unit creates the judgment reference information by learning the first and/or second telecommunication information.

Growing community of inventors

Kawasaki, Japan

Naotoshi Watanabe