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).

  • Patent number: 10159013
    Abstract: A relay device configured to be coupled to a control device, the control device storing first information indicating a position and second information indicating a characteristic of a wireless device which is to be coupled to the control device, the relay device includes a memory, and a processor coupled to the memory and configured to receive, from the wireless device, device information including performance of the wireless device and installment information including a position where the wireless device is located, transmit to the control device the device information and the installment information, receive a response from the control device when the position where the wireless device is located satisfies the first information and the performance of the wireless device satisfies the second information, and establish a communication link between the wireless device and the control device, after receiving the response from the control device.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: December 18, 2018
    Assignee: FUJITSU LIMITED
    Inventors: Tetsuo Tomita, Toshiharu Kawanishi, Teruyoshi Watanabe, Masato Katori
  • Patent number: 9560501
    Abstract: A base station apparatus, includes: a processor; and a memory that stores a communication controlling program to be executed by the processor, wherein the processor is operable, based on the communication controlling program, to: receive a first call connection request transmitted from a terminal apparatus; compare a pattern including values of a plurality of parameters extracted from the first call connection request with a characteristic pattern of a second call connection request based on application communication; and perform, when the pattern of the first call connection request and the characteristic pattern coincide with each other, a transmission process to a different apparatus in accordance with the first call connection request after a delay time elapses from a reception timing of the first call connection request.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: January 31, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Tetsuo Tomita, Toshiharu Kawanishi, Teruyoshi Watanabe, Mitsuhiro Tani, Masato Katori
  • Patent number: 9526128
    Abstract: A REC unit manages card information on each of L1 cards handling a physical channel, L2-1 cards handling a logical channel, and L2-2 cards in which a scheduling function for communication processing performed with respect to the L1 card and/or the L2-1 card is implemented. A call control card of the REC unit selects, for each of first to third channels, a processing card establishing a signal path relevant to the logical channel from among the L1 card, the L2-1 card, and the L2-2 card. The call control card transmits connection relation information indicating a combination of the processing cards selected to each processing card. On the basis of the connection relation information received from the call control card, each processing card establishes the signal path for each of the first to third channels relevant to the logical channel between the processing cards.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: December 20, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Tetsuo Tomita, Hiroaki Takashima, Kenji Arai, Koichi Hiramoto
  • Publication number: 20160269937
    Abstract: A relay device configured to be coupled to a control device, the control device storing first information indicating a position and second information indicating a characteristic of a wireless device which is to be coupled to the control device, the relay device includes a memory, and a processor coupled to the memory and configured to receive, from the wireless device, device information including performance of the wireless device and installment information including a position where the wireless device is located, transmit to the control device the device information and the installment information, receive a response from the control device when the position where the wireless device is located satisfies the first information and the performance of the wireless device satisfies the second information, and establish a communication link between the wireless device and the control device, after receiving the response from the control device.
    Type: Application
    Filed: March 4, 2016
    Publication date: September 15, 2016
    Inventors: Tetsuo TOMITA, Toshiharu KAWANISHI, Teruyoshi WATANABE, Masato KATORI
  • Publication number: 20160143051
    Abstract: A REC unit manages card information on each of L1 cards handling a physical channel, L2-1 cards handling a logical channel, and L2-2 cards in which a scheduling function for communication processing performed with respect to the L1 card and/or the L2-1 card is implemented. A call control card of the REC unit selects, for each of first to third channels, a processing card establishing a signal path relevant to the logical channel from among the L1 card, the L2-1 card, and the L2-2 card. The call control card transmits connection relation information indicating a combination of the processing cards selected to each processing card. On the basis of the connection relation information received from the call control card, each processing card establishes the signal path for each of the first to third channels relevant to the logical channel between the processing cards.
    Type: Application
    Filed: October 28, 2015
    Publication date: May 19, 2016
    Applicant: FUJITSU LIMITED
    Inventors: Tetsuo Tomita, Hiroaki TAKASHIMA, Kenji ARAI, Koichi Hiramoto
  • Patent number: 9210638
    Abstract: An apparatus acquires a parameter set including first and second parameter subsets. The first parameter subset stores first throughput and first power consumption that are measured, before a handover of a mobile station, by each base-station belonging to a measurement target group including a plurality of handover-candidate base-stations and a handover-source base-station. The second parameter subset stores second throughput and second power consumption that are estimated by each base-station belonging to the measurement target group, on the assumption that the mobile station is handed over to the each base-station.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: December 8, 2015
    Assignee: FUJITSU LIMITED
    Inventors: Tetsuo Tomita, Masanori Hasimoto, Bun Kimura
  • Publication number: 20150334694
    Abstract: A base station apparatus, includes: a processor; and a memory that stores a communication controlling program to be executed by the processor, wherein the processor is operable, based on the communication controlling program, to: receive a first call connection request transmitted from a terminal apparatus; compare a pattern including values of a plurality of parameters extracted from the first call connection request with a characteristic pattern of a second call connection request based on application communication; and perform, when the pattern of the first call connection request and the characteristic pattern coincide with each other, a transmission process to a different apparatus in accordance with the first call connection request after a delay time elapses from a reception timing of the first call connection request.
    Type: Application
    Filed: April 8, 2015
    Publication date: November 19, 2015
    Inventors: Tetsuo TOMITA, Toshiharu KAWANISHI, Teruyoshi WATANABE, Mitsuhiro TANI, Masato KATORI
  • Patent number: 9072024
    Abstract: A wireless communication system includes a first relay station that includes a first storage and performs wireless communication with a first base station coupled to an exchange by a wire, and a mobile device that performs wireless communication with the first relay station. The first relay station receives first data with a first sequence number from the first base station, and stores the first data with a second sequence number into the first storage, the first relay station selects a first node as a handover destination, and when the first node is a second base station coupled to the exchange by a wire, the first relay station receives second data with a third sequence number from the first base station, and transmits the first data with the second sequence number and the second data with a fourth sequence number continuous to the second sequence number to the second base station.
    Type: Grant
    Filed: October 18, 2013
    Date of Patent: June 30, 2015
    Assignee: FUJITSU LIMITED
    Inventors: Tetsuo Tomita, Masanori Hashimoto, Bun Kimura
  • Patent number: 8989795
    Abstract: A control method for controlling base station apparatuses used in a communication system comprising a first base station apparatus, a second base station apparatus, and one or more mobile station apparatuses, including determining whether or not a first condition relating to the number of the mobile station apparatuses positioned in the overlapping area of the cover area of the first base station apparatus and the cover area of the second base station apparatus and to respective output power of the mobile station is satisfied, and outputting a radio signal from the second base station apparatus if the first condition is satisfied.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: March 24, 2015
    Assignee: Fujitsu Limited
    Inventors: Bun Kimura, Tetsuo Tomita
  • Patent number: 8982844
    Abstract: A base station, to which a cell belongs and which communicates with a relay node to which a relay node cell belongs, including a control unit configured, at a time of handing over the relay node from another cell belonging to a first base station to the cell belonging to the base station, to request the relay node to measure wireless quality of neighbor cells of the cell belonging to the base station and report a measurement result of the wireless quality, and to update by adding or deleting, if the measurement result of the wireless quality of a first neighbor cell among the neighbor cells is higher or lower than a predetermined threshold for the cell existing at the handover destination of the relay node, the relay node cell to or from a first neighbor cell list of the first neighbor cell, respectively.
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: March 17, 2015
    Assignee: Fujitsu Limited
    Inventors: Satoshi Watanabe, Bun Kimura, Tetsuo Tomita, Masanori Hashimoto
  • Patent number: 8874118
    Abstract: A base station, to which a cell belongs and which communicates with a relay node to which a relay node cell belongs, includes a control unit configured, at a time of handing over the relay node from the cell of the base station to a first cell belonging to a first base station, to extract information indicative of a non-overlapping cell between a first handover destination neighbor cell list containing neighbor cell information of a first neighbor cell adjacent to the first cell at a handover destination and a first handover source neighbor cell list containing neighbor cell information of a neighbor cell adjacent to the cell at a handover source, and to update a neighbor cell list corresponding to the non-overlapping cell by deleting the relay node cell belonging to the relay node from the neighbor cell list based on the information indicative of the non-overlapping cell.
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: October 28, 2014
    Assignee: Fujitsu Limited
    Inventors: Satoshi Watanabe, Bun Kimura, Tetsuo Tomita, Masanori Hashimoto
  • Patent number: 8837364
    Abstract: A base station device including: a receiver that receives data from a terminal device; and a processor that performs setting for the reception of data from the terminal device, and deactivates a management of the terminal device after performing setting, wherein the receiver receives data from the terminal device in a state of deactivated management.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: September 16, 2014
    Assignee: Fujitsu Limited
    Inventors: Kayo Motohashi, Masanori Hashimoto, Tetsuo Tomita
  • Patent number: 8780879
    Abstract: A frequency band adjusting method, in a first communication system and a second communication system sharing usable frequency band with each other, for adjusting the frequency band used by a first communication apparatus in the first communication system, comprising: determining whether or not increase in the frequency band used by the first communication apparatus is necessary based on the frequency band used by the first communication apparatus and the number of access to the first communication apparatus; determining whether or not increase in the frequency band used by the first communication apparatus is to be approved, according as there is or there is not unused frequency band not used by a second communication apparatus in the second communication system having coverage overlapping with the first communication apparatus; and, if increase is approved, increasing the frequency band used by the first communication apparatus.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: July 15, 2014
    Assignee: Fujitsu Limited
    Inventors: Tetsuo Tomita, Bun Kimura
  • Publication number: 20140051450
    Abstract: A wireless communication system includes a first relay station that includes a first storage and performs wireless communication with a first base station coupled to an exchange by a wire, and a mobile device that performs wireless communication with the first relay station. The first relay station receives first data with a first sequence number from the first base station, and stores the first data with a second sequence number into the first storage, the first relay station selects a first node as a handover destination, and when the first node is a second base station coupled to the exchange by a wire, the first relay station receives second data with a third sequence number from the first base station, and transmits the first data with the second sequence number and the second data with a fourth sequence number continuous to the second sequence number to the second base station.
    Type: Application
    Filed: October 18, 2013
    Publication date: February 20, 2014
    Applicant: FUJITSU LIMITED
    Inventors: Tetsuo TOMITA, Masanori HASHIMOTO, Bun KIMURA
  • Patent number: 8655367
    Abstract: In a communication system 10, a management device 100, which is under the control of the MVNO, collects radio quality information from a UE 500 by using a communication channel established between the management device 100 and the UE 500, selects an optimum cell by using the collected radio quality information, and notifies the UE 500 of the selected optimum cell. The UE 500 then connects or hands over to the optimum cell notified by the management device 100.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: February 18, 2014
    Assignee: Fujitsu Limited
    Inventors: Tetsuo Tomita, Bun Kimura
  • Patent number: 8611332
    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: Grant
    Filed: May 20, 2010
    Date of Patent: December 17, 2013
    Assignee: Fujitsu Limited
    Inventors: Tetsuo Tomita, Tomonori Kumagai, Daisuke Nitta
  • Patent number: 8583192
    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: Grant
    Filed: January 14, 2011
    Date of Patent: November 12, 2013
    Assignee: Fujitsu Limited
    Inventors: Tetsuo Tomita, Takashi Sonobe
  • Publication number: 20130258945
    Abstract: A first maintenance signal is exchanged between a server coupled to a base station and a processing unit inside a mobile device, via a wireless channel between the base station and the mobile device, to confirm establishment of a session between the server and the processing unit. The base station sends, to the server, one of control signals according to a connection state of the wireless channel, without sending the received first maintenance signal to the mobile device via the wireless channel, where the control signals includes a second maintenance signal, a session disconnected signal, and a session established signal. The mobile device sends, to the processing unit, one of the control signals according to a connection state of the wireless channel, without sending the received first maintenance signal to the server via the wireless channel.
    Type: Application
    Filed: March 5, 2013
    Publication date: October 3, 2013
    Applicant: FUJITSU LIMITED
    Inventors: Tetsuo Tomita, Masanori Hashimoto, Bun Kimura
  • Publication number: 20130260762
    Abstract: An apparatus acquires a parameter set including first and second parameter subsets. The first parameter subset stores first throughput and first power consumption that are measured, before a handover of a mobile station, by each base-station belonging to a measurement target group including a plurality of handover-candidate base-stations and a handover-source base-station. The second parameter subset stores second throughput and second power consumption that are estimated by each base-station belonging to the measurement target group, on the assumption that the mobile station is handed over to the each base-station.
    Type: Application
    Filed: March 18, 2013
    Publication date: October 3, 2013
    Applicant: FUJITSU LIMITED
    Inventors: Tetsuo Tomita, Masanori Hasimoto, Bun Kimura
  • Patent number: 8532018
    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: Grant
    Filed: October 27, 2010
    Date of Patent: September 10, 2013
    Assignee: Fujitsu Limited
    Inventors: Tetsuo Tomita, Takashi Sonobe