Patents by Inventor Tetsuo Tomita

Tetsuo Tomita has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20110105200
    Abstract: A base station device for making communications with a mobile terminal includes a communication monitoring unit that monitors a communication situation between the base station device and the mobile terminal; and an operational-power control unit that causes, when the communication monitoring unit detects that no communications between the base station device and the mobile terminal have been made for a predetermined continuous period or longer, the base station device to operate at a power lower than a predetermined power.
    Type: Application
    Filed: January 14, 2011
    Publication date: May 5, 2011
    Applicant: FUJITSU LIMITED
    Inventors: Tetsuo TOMITA, Takashi SONOBE
  • Publication number: 20110098041
    Abstract: A radio controller performs call connection when a connection request is sent from a UE that exists in a macrocell accommodated by a macrocell base station. Thereafter, when the radio controller receives the connection request from the UE that exists in the macrocell accommodated by the macrocell base station, the radio controller searches for a femtocell that is adjacent to or overlaps the macrocell in which the UE exists and a femto base station that accommodates the femtocell. The radio controller instructs the searched femto base station to resume. The radio controller then instructs the UE to be handed over to the femtocell.
    Type: Application
    Filed: December 30, 2010
    Publication date: April 28, 2011
    Applicant: FUJITSU LIMITED
    Inventors: Tetsuo TOMITA, Takashi SONOBE
  • Publication number: 20110038298
    Abstract: A mobile communication system includes a data multiplexer which divides by time a radio frame of a communication channel in a radio layer and multiplexes one of a plurality of pieces of multicast data and a plurality of pieces of broadcast data into the divided radio frames; and a data multiplex demultiplexer which demultiplexes, when receiving one of the plurality of pieces of multicast data and the plurality of pieces of broadcast data multiplexed by the data multiplexer, the multiplexing of the received data.
    Type: Application
    Filed: October 27, 2010
    Publication date: February 17, 2011
    Applicant: FUJITSU LIMITED
    Inventors: Tetsuo TOMITA, Takashi SONOBE
  • Publication number: 20100315998
    Abstract: A communication apparatus comprises a processing information acquiring unit to acquire a processing delay time, a transmission information acquiring unit to acquire each transmission delay time, a collecting unit to collect each arrival time from nodes onward from each of the subordinated nodes, a calculating unit to calculate the time after distribution data is received by the self-node until it arrives at each of the terminals as the arrival time from the home node onward for each of the nodes through which the distribution data is routed based on the processing delay time, the transmission delay times, and each the arrival time from the node onward, and a transmission control unit to control the transmission timing of the distribution data to at least one of the nodes based on the arrival times from the home node onward for each of the nodes.
    Type: Application
    Filed: May 20, 2010
    Publication date: December 16, 2010
    Applicant: FUJITSU LIMITED
    Inventors: Tetsuo TOMITA, Tomonori KUMAGAI, Daisuke NITTA
  • Publication number: 20100195559
    Abstract: A method of mobile communication at a base station includes transmitting to a mobile station, identifying information for multicast data to be transmitted to the mobile station and transmitting the multicast data on a shared channel to the mobile station, wherein the data is identified by the information.
    Type: Application
    Filed: April 15, 2010
    Publication date: August 5, 2010
    Applicant: Fujitsu Limited
    Inventors: Eiji IKEDA, Tomonori KUMAGAI, Tetsuo TOMITA, Kazunari KOBAYASHI
  • Publication number: 20100069059
    Abstract: A base station that performs radio transmission and reception with a mobile station includes an update time management section that manages update time of broadcast information to be broadcasted, and a broadcast information transmission section that broadcasts the broadcast information including update time information of the broadcast information by using a broadcasting channel.
    Type: Application
    Filed: August 26, 2009
    Publication date: March 18, 2010
    Applicant: Fujitsu Limited
    Inventors: Tatsuru Nakagaki, Tetsuo Tomita
  • Publication number: 20100034097
    Abstract: An information distribution apparatus which is connected to each of a plurality of communication systems for performing radio communication with a mobile terminal through a network by using each of a plurality of communication methods having a range in which available frequencies overlap and manages information on communication environments of the communication systems.
    Type: Application
    Filed: October 16, 2009
    Publication date: February 11, 2010
    Applicant: FUJITSU LIMITED
    Inventors: Daisuke Nitta, Tetsuo Tomita, Tomonori Kumagai, Yuki Shinada, Tatsuru Nakagaki
  • Publication number: 20100035553
    Abstract: A mobile terminal includes a reception unit to receive, from at least one of a plurality of communication systems, an initial beacon containing information for establishing communication according to each of the plurality of communication methods, a request unit to generate a request by use of the initial beacon to transmit the request to the at least one of the plurality of communication systems, and a determination unit to determine, based on information as a response to the request, the communication method and the frequency band, which are to be used in a time zone by the mobile terminal.
    Type: Application
    Filed: October 16, 2009
    Publication date: February 11, 2010
    Applicant: FUJITSU LIMITED
    Inventors: Yuki Shinada, Daisuke Nitta, Tetsuo Tomita, Tatsuru Nakagaki, Tomonori Kumagai
  • Publication number: 20090311990
    Abstract: A base station according to an embodiment may include a wireless function unit to wirelessly communicate with a user equipment; a transmission/reception unit to wirelessly communicate with the user equipment; and a control unit to receive set-up data from the user equipment via the transmission/reception unit to set up the wireless function unit.
    Type: Application
    Filed: March 24, 2009
    Publication date: December 17, 2009
    Applicant: FUJITSU LIMITED
    Inventors: Daisuke NITTA, Tetsuo TOMITA
  • Publication number: 20090285100
    Abstract: In a mobile communication system, which has a plurality of radio network controllers and a number of radio base stations connected to each of the radio network controllers, for sending and receiving user data between a host network and mobile stations via the radio network controllers and radio base stations, a plurality of transmission paths that pass through one or more radio network controllers are set up between a base station, which sends and receives radio signals to and from a mobile station, and the host network. When data is being sent and received using one transmission path from the host network to a base station through a radio network controller, traffic conditions on this transmission path are monitored. When traffic has increased, the user data is dispersed by being passed through a plurality of transmission paths.
    Type: Application
    Filed: July 23, 2009
    Publication date: November 19, 2009
    Applicant: FUJITSU LIMITED
    Inventors: Tetsuo Tomita, Toshiyuki Yokosaka, Akira Fujishima
  • Publication number: 20090274095
    Abstract: A mobile wireless communication system includes: a wireless base station that controls, for each timing, a transmission state of a radio wave repeatedly transmitted at timings that respectively differ; and a plurality of wireless mobile devices that are respectively allocated one of the timings, receive the radio wave at the timing allocated, and based on the radio wave received, respectively detect a connection destination. The wireless base station controls the transmission state of the radio wave transmitted at an arbitrary timing to be any one of a complete suspension state of continuously suspending transmission, a discontinuous suspension state of discontinuously suspending transmission, and an invalid information transmission state of transmitting invalid information.
    Type: Application
    Filed: December 29, 2008
    Publication date: November 5, 2009
    Applicant: FUJITSU LIMITED
    Inventors: Masaru Iwasa, Tetsuo Tomita, Mikio Ito, Yoshio Miura
  • Patent number: 7613149
    Abstract: In a mobile communication system, which has a plurality of radio network controllers and a number of radio base stations connected to each of the radio network controllers, for sending and receiving user data between a host network and mobile stations via the radio network controllers and radio base stations, a plurality of transmission paths that pass through one or more radio network controllers are set up between a base station, which sends and receives radio signals to and from a mobile station, and the host network. When data is being sent and received using one transmission path from the host network to a base station through a radio network controller, traffic conditions on this transmission path are monitored. When traffic has increased, the user data is dispersed by being passed through a plurality of transmission paths.
    Type: Grant
    Filed: June 2, 2005
    Date of Patent: November 3, 2009
    Assignee: Fujitsu Limited
    Inventors: Tetsuo Tomita, Toshiyuki Yokosaka, Akira Fujishima
  • Publication number: 20090247162
    Abstract: A communication controlling apparatus includes a track information storage unit that has stored therein track information including tracks passing through a management area of the communication controlling apparatus and shift patterns indicative of which cell and in what order the handover is preferably executed for when a mobile device moves on the tracks defined in a correlated manner; and a movement speed determining unit that determines whether a movement speed of the mobile device is equal to a predetermined speed or more. The apparatus also includes a track determining unit that determines a track including the mobile device in motion by extracting from the track information a track including a cell the mobile device belongs to in the shift pattern if the movement speed determining unit determines that a movement speed of the mobile device is equal to a predetermined speed or more.
    Type: Application
    Filed: October 28, 2008
    Publication date: October 1, 2009
    Applicant: FUJITSU LIMITED
    Inventors: Hirotomo YASUOKA, Tetsuo TOMITA
  • Publication number: 20090239547
    Abstract: A controller which is assigned with the wireless resources for a plurality of wireless zones and a plurality of wireless base stations communicably connected to the controller, wherein the controller is operable to assign a part of the assigned wireless resources to the wireless zone formed by any of the wireless base stations. According to this, it is possible to introduce and run a great number of wireless base stations at a low cost without increasing or modifying the number of the superordinate devices such as RNC.
    Type: Application
    Filed: October 28, 2008
    Publication date: September 24, 2009
    Applicant: FUJITSU LIMITED
    Inventors: Daisuke NITTA, Tetsuo TOMITA, Tomonori KUMAGAI, Satoshi WATANABE, Kazunari KOBAYASHI
  • Publication number: 20090239520
    Abstract: It administers a plurality of wireless base stations grouped into a plurality of groups, and performs the processing about the management, control and maintenance of the wireless base stations selectively for each of the groups. This enables the efficient management, control and maintenance processing of the wireless base stations.
    Type: Application
    Filed: October 28, 2008
    Publication date: September 24, 2009
    Applicant: FUJITSU LIMITED
    Inventors: Daisuke Inagaki, Noboru Hasegawa, Takeshi Masubuchi, Daisuke Nitta, Tetsuo Tomita, Tomonori Kumagai, Satoshi Watanabe, Kazunari Kobayashi
  • Publication number: 20090239561
    Abstract: A base station accommodation method and mobile communication system which allows the installation of many micro-miniature BTS devices are provided. The mobile communication system includes a plurality of base stations which accommodate a plurality of mobile terminals respectively; a plurality of first base station control devices, each of which accommodates a predetermined number of base stations out of the plurality of base stations; and a second base station control device which accommodates the plurality of first base station control devices, wherein each of the plurality of first base station control devices comprises, for supporting information identifying a mobile terminal, a mobile terminal data base to store identification information which identifies a base station to which the mobile terminal is subordinate, and a station data base to store an address of the base station.
    Type: Application
    Filed: October 29, 2008
    Publication date: September 24, 2009
    Applicant: FUJITSU LIMITED
    Inventors: Daisuke Nitta, Tetsuo Tomita, Tomonori Kumagai, Satoshi Watanabe, Kazunari Kobayashi
  • Publication number: 20090067380
    Abstract: A mobile station used in a mobile communication system having a base station, the mobile station comprises a receiver which receives first identification information and second identification information, and receives first information using the first identification information and second information using the second identification information, wherein the first information includes identification information same as the first identification and the second information includes identification information same as the second identification information.
    Type: Application
    Filed: November 11, 2008
    Publication date: March 12, 2009
    Inventors: Eiji Ikeda, Tomonori Kumagai, Tetsuo Tomita, Kazunari Kobayashi
  • Publication number: 20090046689
    Abstract: A mobile communication system includes a radio network control apparatus having inside a function block for processing a downlink shared channel and table means for storing various setting information related to the downlink shared channel communication and the downlink shared channel multi-cast communication. According to the information, a multi-cast communication (including uni-cast communication) is realized by using the downlink shared channel for one or more mobile apparatuses. Moreover, a base station has a function to transmit the downlink shared channel data and signaling data received from a radio network control apparatus, to a mobile apparatus via a radio line. Furthermore, it is possible to multi-cast data selectively to a particular mobile apparatus being call-connected.
    Type: Application
    Filed: October 10, 2008
    Publication date: February 19, 2009
    Inventors: Eiji Ikeda, Tomonori Kumagai, Tetsuo Tomita, Kazunari Kobayashi
  • Publication number: 20090046620
    Abstract: A base station comprises a transmitter configured to transmit first data to a mobile station and to transmit second data to a plurality of base stations via a shared channel, wherein the first data includes unicast data and identification information assigned to the mobile station and the second data includes multicast data and identification information of multicast which is identical to identification information of multicast assigned to the plurality of mobile stations.
    Type: Application
    Filed: October 14, 2008
    Publication date: February 19, 2009
    Inventors: Eiji Ikeda, Tomonori Kumagai, Tetsuo Tomita, Kazunari Kobayashi
  • Publication number: 20080101295
    Abstract: A packet transferring/transmitting method is provided for use in a mobile communication system 50. In this packet transferring/transmitting method, an upper node 1 determines the implementation of handover (determination step), and a handover addressing node 2 transfers, of a plurality of packets, a non-transmitted residual packet to a handover addressed node 3, and the upper node 1 transmits a new packet to the handover addressed node 3 (transfer/transmission step). This enables maintaining the number of users to be accommodated while securing a wide bandwidth, sharing a line with high efficiency at soft handover, avoiding data residual in the case of the employment of variable communication rate, and preventing an increase in retransmission.
    Type: Application
    Filed: December 21, 2007
    Publication date: May 1, 2008
    Inventors: Tetsuo Tomita, Eiji Ikeda, Kazunari Kobayashi, Tomonori Kumagai