Patents by Inventor Anil Umesh

Anil Umesh 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: 20190208495
    Abstract: Provided is a radio communication system capable of implementing a state transition related to an intermediate transition between a connected state and an idle state.
    Type: Application
    Filed: August 4, 2017
    Publication date: July 4, 2019
    Applicant: NTT DOCOMO, INC.
    Inventors: Hideaki Takahashi, Tooru Uchino, Wuri Andarmawanti Hapsari, Anil Umesh
  • Publication number: 20190159278
    Abstract: Disclosed is a radio communication system capable of implementing a state transition related to an intermediate state between a connected state and an idle state. An aspect of the present invention relates to a user equipment, wherein the user equipment includes a state management unit that manages a communication state of the user equipment, and a state transition unit that causes the communication state of the user equipment to transition, and when the user equipment is communicating with the first base station, if cell reselection for the second base station is performed, the state transition unit performs the cell reselection for the second base station while the state management unit retains first radio parameter information for radio communication between the user equipment and the first base station and a first context identifier specifying the first radio parameter information.
    Type: Application
    Filed: August 4, 2017
    Publication date: May 23, 2019
    Applicant: NTT DOCOMO, INC.
    Inventors: Hideaki Takahashi, Tooru Uchino, Wuri Andarmawanti Hapsari, Anil Umesh
  • Publication number: 20190132094
    Abstract: Provided is a communication system that can sustain a reduction in delay in FFT/IFFT processing by code blocking user data, even in a case where the functions of upper layers such as a MAC scheduler and the function of the radio physical layer are implemented separately. In a radio base station (communication system) including a central aggregation device 210 and a remote device 220, the central aggregation device 210 transmits code blocks in a number necessary for generating an OFDM symbol as a piece of data to the remote device 220, the code blocks being produced by dividing user data into units of encoding processing.
    Type: Application
    Filed: February 28, 2017
    Publication date: May 2, 2019
    Applicant: NTT DOCOMO, INC.
    Inventors: Tooru Uchino, Naoto Ookubo, Anil Umesh
  • Publication number: 20190124629
    Abstract: One object is to provide a radio base station and a communication control method in which a remote device can correctly transmit downlink data based on radio resource assignment information from a central aggregation device even when a function of an upper layer such as MAC scheduler and a function of a radio physical layer are mounted separately. The method includes transmitting including a central aggregation device (210) of a radio base station transmitting to a remote device (260) a frame containing each of assignment information indicating radio resource assignment and downlink data that is data transmitted to a user device (300), and transmitting including the remote device (260), based on the received frame, transmitting the assignment information to the user device (300) via PDCCH and transmitting the downlink data to the user device (300) via DLSCH.
    Type: Application
    Filed: February 13, 2017
    Publication date: April 25, 2019
    Applicant: NTT DOCOMO, INC.
    Inventors: Tooru Uchino, Anil Umesh, Naoto Ookubo
  • Publication number: 20190124553
    Abstract: A technique of promptly implementing appropriate flow control in distributed transmission is provided. An aspect of the present invention relates to a base station serving as a distribution source base station in distributed transmission in which transmission target packets are divided and transmitted from a plurality of base stations to a user equipment, wherein the base station includes a feedback information acquiring unit that acquires radio environment information of a distribution destination base station in the distributed transmission; and a communication control unit that controls the distributed transmission according to the radio environment information.
    Type: Application
    Filed: April 6, 2017
    Publication date: April 25, 2019
    Applicant: NTT DOCOMO, INC.
    Inventors: Tooru Uchino, Anil Umesh, Kazuki Takeda, Sadayuki Abeta
  • Publication number: 20190124716
    Abstract: Provided are a radio communication system and user device that enable smooth interworking in a radio resource control (RRC) layer in the case of implementing interworking between systems by LTE assisted 5G, 5G assisted LTE, or the like. The radio communication system includes an eNB 100 conforming to LTE and a 5G-BS 200 conforming to 5G. The eNB 100 includes an RRC function unit 110 that performs control based on LTE-RRC, which is an RRC protocol in LTE. The 5G-BS 200 includes an RRC function unit 210 that performs control based on 5G-RRC, which is the RRC protocol in 5G. The RRC function unit 210 has at least a function not specified in LTE-RRC.
    Type: Application
    Filed: May 11, 2017
    Publication date: April 25, 2019
    Applicant: NTT DOCOMO, INC.
    Inventors: Wuri Andarmawanti Hapsari, Ryusuke Matsukawa, Hideaki Takahashi, Anil Umesh, Sadayuki Abeta
  • Publication number: 20190116629
    Abstract: There is provided user equipment for communicating with a first base station and a second base station, the user equipment including a receiver that receives, form the first base station or the second base station with which an RRC connection is established, a first message indicating to establish a split bearer between the first base station and the second base station; and a communicator that establishes the split bearer between the first base station and the second base station that are reported by the first message, wherein, in the split bearer, a process of a PDCP layer is performed by one of the first base station and the second base station.
    Type: Application
    Filed: April 6, 2017
    Publication date: April 18, 2019
    Applicant: NTT DOCOMO, INC.
    Inventors: Wuri Andarmawanti Hapsari, Tooru Uchino, Hideaki Takahashi, Anil Umesh, Sadayuki Abeta
  • Publication number: 20190110305
    Abstract: A communication control method according to the present invention is implemented in a radio base station (200) including a remote device (260) and a central aggregation device (210) and that performs radio communication with a user device (300). The communication method includes acquiring including the remote device (260) acquiring via a predetermined uplink channel downlink quality information indicating radio communication quality in downlink acquired by the user device (300); transmitting including the remote device (260) transmitting to the central aggregation device (210) a quality data series containing one or more pieces of the downlink quality information acquired at the acquiring; and performing including the central aggregation device (210) performing assignment of a radio resource to the user device (300) based on the quality data series.
    Type: Application
    Filed: February 28, 2017
    Publication date: April 11, 2019
    Applicant: NTT DOCOMO, INC.
    Inventors: Naoto Ookubo, Kohei Kiyoshima, Anil Umesh, Tooru Uchino, Kazuki Takeda
  • Publication number: 20190110275
    Abstract: The communication control method includes transmitting including a central aggregation device (210) of a radio base station transmitting to a remote device (260) system information (SIB) that is notified to a user device (300) and assignment information indicating radio resource assignment used for notifying the system information, and transmitting including the remote device (260) transmitting the system information to the user device (300) via a predetermined downlink channel based on received assignment information. The transmitting the assignment information to the remote device (260) includes, when the contents of the system information or the assignment information is changed, transmitting the contents changed system information or the contents changed assignment information.
    Type: Application
    Filed: April 5, 2017
    Publication date: April 11, 2019
    Applicant: NTT DOCOMO, INC.
    Inventors: Wuri Andarmawanti Hapsari, Anil Umesh, Naoto Ookubo, Tooru Uchino
  • Publication number: 20190089505
    Abstract: Provided is a base station used as a first base station in a radio communication system including the first base station, a second base station communicating with the first base station, and a user equipment communicating with the first base station. The base station includes: an acquiring unit that acquires a plurality of parameters used for an initial cell setting; and a setting unit that performs a cell setting using the acquired plurality of parameters.
    Type: Application
    Filed: March 23, 2017
    Publication date: March 21, 2019
    Applicant: NTT DOCOMO, INC.
    Inventors: Wuri Andarmawanti Hapsari, Naoto Ookubo, Tooru Uchino, Anil Umesh
  • Publication number: 20190075560
    Abstract: A base station is provided that includes an obtainer that obtains a first parameter used for generation of a signal of a physical downlink control format indicator channel, a second parameter used for generation of a signal of a physical downlink HARQ indicator channel, or a third parameter used for generation of a signal of a physical downlink control channel; a generator that generates the signal of the physical downlink control format indicator channel, the signal of the physical downlink HARQ indicator channel, or the signal of the physical downlink control channel using the first parameter, the second parameter, or the third parameter; and a transmitter that transmits the generated signal of the physical downlink control format indicator channel, the generated signal of the physical downlink HARQ indicator channel, or the generated signal of the physical downlink control channel.
    Type: Application
    Filed: March 16, 2017
    Publication date: March 7, 2019
    Applicant: NTT DOCOMO, INC.
    Inventors: Takahiro Takiguchi, Naoto Ookubo, Anil Umesh, Tooru Uchino
  • Publication number: 20190021060
    Abstract: The communication control method according to the present invention is performed in a radio base station (200) that includes a remote device (260) and a central aggregation device (210), and that performs radio communication with a user device (300). The communication control method includes acquiring including the remote device (260) acquiring predetermined information necessary to perform a transmission power control of an uplink signal transmitted from the user device (300); transmitting including the remote device (260) transmitting to the central aggregation device (210) the acquired predetermined information; receiving including the central aggregation device (210) receiving the predetermined information; and processing includes the central aggregation device (210) processing, based on the received predetermined information, TPC information that causes the user device (300) to perform the transmission power control.
    Type: Application
    Filed: January 18, 2017
    Publication date: January 17, 2019
    Applicant: NTT DOCOMO, INC.
    Inventors: Takayuki Isogawa, Naoto Ookubo, Takahiro Takiguchi, Anil Umesh, Tooru Uchino, Kazuki Takeda
  • Publication number: 20180343633
    Abstract: A base station used as a first base station in a radio communication system including the first base station, a second base station communicating via the first base station with a user device, and the user device communicating with the first base station. The base station includes a first receiver that receives an uplink signal transmitted from the user device; a measurer that measures a timing difference between a timing of receiving the uplink signal and a predetermined reference timing retained by the base station; and a first transmitter that transmits, to the user device, a command that is generated based on the timing difference and used to control a transmission timing at which the user device transmits the uplink signal.
    Type: Application
    Filed: August 29, 2016
    Publication date: November 29, 2018
    Applicant: NTT DOCOMO, INC.
    Inventors: Tooru UCHINO, Anil UMESH, Kohei KIYOSHIMA, Sadayuki ABETA
  • Publication number: 20180227980
    Abstract: A user apparatus in a mobile communication system including a first base station that sets a link of a control plane between the first base station and the user apparatus, and a second base station that sets a link of a user plane between the second base station and the user apparatus, including: radio link monitoring means configured to perform monitoring of a radio link; and connection control means configured, when disconnection of the link of the control plane is detected by the radio link monitoring means, to perform reestablishment of the link of the control plane for the user apparatus while maintaining the link of the user plane.
    Type: Application
    Filed: July 25, 2016
    Publication date: August 9, 2018
    Applicant: NTT DOCOMO, INC.
    Inventors: Tooru Uchino, Wuri Andarmawanti Hapsari, Anil Umesh, Hideaki Takahashi, Sadayuki Abeta
  • Publication number: 20170311201
    Abstract: A base station is provided. The base station is used as a first base station in a mobile communication system including the first base station, a second base station communicating with the first base station, and a user apparatus communicating with the first base station. The base station includes a first reception unit configured to receive from the second base station a process ID used for error correction processing; a second reception unit configured to receive data from the user apparatus; and a transmission unit configured to transmit the data and the process ID to the second base station in the case where the data is received from the user apparatus.
    Type: Application
    Filed: March 1, 2016
    Publication date: October 26, 2017
    Applicant: NTT DOCOMO, INC.
    Inventors: Tooru Uchino, Wuri Andarmawanti Hapsari, Anil Umesh, Hideaki Takahashi, Sadayuki Abeta
  • Publication number: 20170272975
    Abstract: A user apparatus is provided. The user apparatus is included in a mobile communication system including a first base station, a second base station communicating with the first base station, and the user apparatus communicating with the first base station. The user apparatus includes an obtaining unit configured to obtain from the second base station instruction information indicating an error correction processing operation performed between the first base station and the user apparatus; and a communication unit configured to communicate with the first base station by performing the error correction processing based on the instruction information.
    Type: Application
    Filed: April 6, 2016
    Publication date: September 21, 2017
    Applicant: NTT DOCOMO, INC.
    Inventors: Tooru Uchino, Wuri Andarmawanti Hapsari, Hideaki Takahashi, Anil Umesh, Sadayuki Abeta
  • Publication number: 20170196024
    Abstract: An object is to increase opportunities for starting “Inter-band CA”. A mobile station UE of the present invention includes a transmission unit 14 configured to postpone transmission of a random access preamble in a cell #2 when the mobile station UE in a “RRC_Connected state” in a cell #1 detects a start trigger of a random access procedure in the cell #2, and determines that an uplink signal is being transmitted in the cell #1. The transmission unit 14 performs the postponed transmission of the random access preamble upon completing the transmission of the uplink signal in the cell #1.
    Type: Application
    Filed: March 21, 2017
    Publication date: July 6, 2017
    Applicant: NTT DOCOMO, INC.
    Inventors: Tooru Uchino, Anil Umesh
  • Patent number: 9668262
    Abstract: The present invention aims to reduce an insertion loss or the like caused by a diplexer inserted to reduce leakage from an uplink bandwidth to a downlink bandwidth of different bands, and thereby to improve a communication quality. A mobile communication method according to the present invention includes the steps of: transmitting simultaneous transmission capability information from a mobile station UE to a radio base station eNB, the simultaneous transmission capability information indicating whether or not the mobile station UE is able to transmit uplink data signal via multiple carriers in multiple bands within a same sub-frame in performing uplink CA; performing scheduling for the mobile station UE by the radio base station eNB based on the simultaneous transmission capability information; and performing communications by the mobile station UE based on the scheduling information.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: May 30, 2017
    Assignee: NTT DOCOMO, INC.
    Inventors: Tooru Uchino, Yuta Sagae, Sadayuki Abeta, Hideaki Takahashi, Anil Umesh, Daisuke Nishikawa, Kazuaki Takeda
  • Patent number: 9642164
    Abstract: An object is to increase opportunities for starting “Inter-band CA”. A mobile station UE of the present invention includes a transmission unit 14 configured to postpone transmission of a random access preamble in a cell #2 when the mobile station UE in a “RRC_Connected state” in a cell #1 detects a start trigger of a random access procedure in the cell #2, and determines that an uplink signal is being transmitted in the cell #1. The transmission unit 14 performs the postponed transmission of the random access preamble upon completing the transmission of the uplink signal in the cell #1.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: May 2, 2017
    Assignee: NTT DOCOMO, INC.
    Inventors: Tooru Uchino, Anil Umesh
  • Patent number: 9629188
    Abstract: A mobile communication method and a mobile station appropriately use equivalent band indicators. The mobile communication method includes: a step of broadcasting, by a radio base station BS, a band indicator indicating a band 19 and an equivalent band indicator indicating bands 5 and B26 overlapping the band 19; and a step of performing, by a mobile station UE, an connection process in a band 5 or B26 when the mobile station is not compatible with the band 19 indicated by the received first band indicator and is compatible with the band 5 or B26 indicated by the received equivalent band indicator.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: April 18, 2017
    Assignee: NTT DOCOMO, INC.
    Inventors: Yuta Sagae, Anil Umesh, Hideaki Takahashi, Hiromasa Umeda