Patents by Inventor Lan Chen

Lan Chen 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: 20260246595
    Abstract: A terminal according to one aspect of the present disclosure includes a transmitting section that transmits a plurality of transport blocks to a plurality of transmission/reception points (TRPs) by using an uplink shared channel (Physical Uplink Shared Channel (PUSCH)), and a control section that judges a parameter related to an initial value for generation of a scrambling sequence to be applied to the PUSCH. According to one aspect of the present disclosure, it is possible to appropriately perform PUSCH transmission.
    Type: Application
    Filed: June 30, 2022
    Publication date: August 20, 2026
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Jing Wang, Lan Chen
  • Publication number: 20260247350
    Abstract: A transmitter includes a control unit configured to convert a first signal into a time-frequency domain by performing sparse resource mapping and power shaping on the first signal in a delay-Doppler domain and performing an inverse symplectic finite Fourier transform (ISFFT); and a transmission unit configured to non-orthogonally multiplex the first signal with a second signal and transmit the multiplexed signal.
    Type: Application
    Filed: March 10, 2023
    Publication date: August 20, 2026
    Applicant: NTT DOCOMO, INC.
    Inventors: Naoya Shibaike, Satoshi Nagata, Wenjia Liu, Juan Liu, Xiaolin Hou, Lan Chen, Peisen Wang
  • Publication number: 20260238266
    Abstract: A relay apparatus according to one aspect of the present disclosure includes a receiving section that receives angle information and distance information related to a terminal, and a control section that determines, based on at least one of the angle information and the distance information, a precoder to be applied to a signal directed to the terminal, the precoder being calculated based on multiplication of a first matrix and a second matrix. According to one aspect of the present disclosure, it is possible to appropriately perform communication in a radio communication system using a sub-terahertz band.
    Type: Application
    Filed: February 10, 2023
    Publication date: August 13, 2026
    Applicant: NTT DOCOMO, INC.
    Inventors: Naoya SHIBAIKE, Shohei YOSHIOKA, Daisuke KURITA, Satoshi NAGATA, Haruhi ECHIGO, Yuki MATSUMURA, Xiang LI, Xiaolin HOU, Xin WANG, Lan CHEN, Fan WANG
  • Publication number: 20260239233
    Abstract: A terminal according to one aspect of the present disclosure includes a transmitting section that transmits a physical uplink shared channel (PUSCH) by using simultaneous uplink (UL) transmission from multi-panel, and a control section that controls triggering of a power headroom (PHR) based on the PUSCH transmission, based on a specific condition. One aspect of the present disclosure allows transmission power control to be appropriately performed.
    Type: Application
    Filed: February 22, 2023
    Publication date: August 13, 2026
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Weiqi Sun, Jing Wang, Lan Chen
  • Publication number: 20260239244
    Abstract: A terminal according to an aspect of the present disclosure includes a receiving section that receives cell switching indication information in intra-cell or inter-cell mobility supporting a plurality of transmission/reception points (TRPs), and a control section that determines a timing advance (TA) applied to UL transmission, based on the cell switching indication information, wherein the control section determines a reference cell and a reference TRP for deriving the TA, based on whether a TRP of a specific cell is included in a timing advance group (TAG).
    Type: Application
    Filed: February 26, 2024
    Publication date: August 13, 2026
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Weiqi Sun, Jing Wang, Lan Chen
  • Publication number: 20260239367
    Abstract: This communication device comprises: a control unit that, on the basis of a resource set in a first link between a base station and the communication device, controls a transfer operation in a second link used for transfer between the base station and a terminal with the communication device therebetween; and a communication unit that transfers a signal in the second link according to the control by the control unit.
    Type: Application
    Filed: July 27, 2022
    Publication date: August 13, 2026
    Applicant: NTT DOCOMO, INC.
    Inventors: Daisuke KURITA, Hiroki HARADA, Weiqi SUN, Jing WANG, Lan CHEN
  • Publication number: 20260239326
    Abstract: A relay device according to one aspect of the present disclosure comprises: a reception unit which receives, from a base station, control information regarding a beam used by the relay device on a communication link for relaying, between the base station and the relay device, communication between the base station and a terminal; and a control unit which determines, on the basis of the control information, the beam used by the relay device. The control information includes one or both of first beam information regarding a first beam used for signal reception from the base station on the communication link and second beam information regarding a second beam used for signal transmission to the base station on the communication link.
    Type: Application
    Filed: February 21, 2023
    Publication date: August 13, 2026
    Applicant: NTT DOCOMO, INC.
    Inventors: Daisuke KURITA, Hiroki HARADA, Weiqi SUN, Jing WANG, Lan CHEN
  • Publication number: 20260239433
    Abstract: A terminal according to one aspect of the present disclosure includes: a control section that measures a synchronization signal block (SSB) corresponding to a set of a plurality of beams of each layer, and determines an index of a best beam, based on a measurement result; and a transmitting section that transmits a Physical Random Access Channel (PRACH) corresponding to the index of the best beam. According to one aspect of the present disclosure, it is possible to perform determination of the best beam at high speed.
    Type: Application
    Filed: January 24, 2023
    Publication date: August 13, 2026
    Applicant: NTT DOCOMO, INC.
    Inventors: Haruhi Echigo, Satoshi Nagata, Yuki Matsumura, Naoya Shibaike, Xin Wang, Jing Wang, Xiaolin Hou, Lan Chen
  • Publication number: 20260230129
    Abstract: A terminal according to one aspect of the present disclosure includes a control section that determines an 8-port partial-coherent precoder configured based on some precoders limited based on at least a rank, from among 4-port precoders, and a transmitting section that performs uplink transmission, based on the 8-port partial-coherent precoder. One aspect of the present disclosure allows UL transmission using more than 4 antenna ports to be appropriately controlled.
    Type: Application
    Filed: February 14, 2023
    Publication date: August 6, 2026
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Jing Wang, Lan Chen
  • Publication number: 20260230248
    Abstract: A terminal according to one aspect of the present disclosure includes: a receiving section that receives information on the number of codewords by at least one of a higher layer parameter, MAC control information, and downlink control information when transmission of a plurality of codewords is supported in UL transmission using more than four layers; and a control section that judges the number of codewords corresponding to each UL transmission, based on the information on the number of codewords.
    Type: Application
    Filed: February 14, 2023
    Publication date: August 6, 2026
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Naoya Shibaike, Satoshi Nagata, Jing Wang, Lan Chen
  • Publication number: 20260230125
    Abstract: A terminal according to one aspect of the present disclosure includes a receiving section that receives configuration information related to a codebook subset only for a fully-coherent precoder or a codebook subset only for a partial-coherent precoder, and a control section that determines a precoding matrix for transmission of a physical uplink shared channel, based on the codebook subset indicated by the configuration information and downlink control information for scheduling the physical uplink shared channel. According to one aspect of the present disclosure, it is possible to appropriately control UL transmission using more than four antenna ports.
    Type: Application
    Filed: September 28, 2022
    Publication date: August 6, 2026
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Jing Wang, Lan Chen
  • Patent number: 12701587
    Abstract: Appropriately performing STRP/MTRP PUSCH transmission. A terminal according to one aspect of the present disclosure includes a receiving section that receives downlink control information including a first sounding reference signal (SRS) resource indicator (SRI) field and a second SRI field, and a control section that performs control to perform non-codebook-based uplink transmission scheduled by the downlink control information by using a first panel determined on the basis of the first SRI field and a second panel determined on the basis of the second SRI field.
    Type: Grant
    Filed: March 29, 2022
    Date of Patent: August 4, 2026
    Assignee: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Weiqi Sun, Jing Wang, Lan Chen
  • Patent number: 12701431
    Abstract: A terminal according to one aspect of the present disclosure includes a control section that determines a spatial relation for a physical uplink control channel on the basis of a control resource set having a lowest identifier, and a transmitting section that simultaneously transmits the physical uplink control channel on the basis of the spatial relation by using a plurality of coherent panels. According to one aspect of the present disclosure, it is possible to appropriately perform simultaneous UL transmission using multiple panels.
    Type: Grant
    Filed: January 8, 2021
    Date of Patent: August 4, 2026
    Assignee: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Jing Wang, Lan Chen
  • Patent number: 12696210
    Abstract: A radio communication node (100 B) configures a number of first symbols to be used for dynamically adjusting transmission timing when performing uplink transmission in a first radio link connected to the upper node, and notifies the upper node thereof.
    Type: Grant
    Filed: August 27, 2020
    Date of Patent: July 28, 2026
    Assignee: NTT DOCOMO, INC.
    Inventors: Daisuke Kurita, Hiroki Harada, Weiqi Sun, Jing Wang, Lan Chen
  • Patent number: 12696244
    Abstract: A terminal according to one aspect of the present disclosure includes a control section that determines a sounding reference signal resource indicator (SRI) applied to a first uplink shared channel (Physical Uplink Shared Channel (PUSCH)) out of a plurality of PUSCHs and that determines an order of SRIs applied to respective PUSCHs, and a transmitting section that transmits the plurality of PUSCHs. According to one aspect of the present disclosure, it is possible to appropriately control PUSCH repetition transmission even when multiple TRPs are applied.
    Type: Grant
    Filed: February 1, 2022
    Date of Patent: July 28, 2026
    Assignee: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Weiqi Sun, Jing Wang, Lan Chen
  • Publication number: 20260214482
    Abstract: A terminal according to one aspect of the present disclosure includes: a receiving section that receives information of a plurality of transmission/reception points (TRPs) for measurement of channel state information (CSI); and a control section that determines a group of TRPs of the plurality of TRPs, based on the information. According to one aspect of the present disclosure, it is possible to appropriately perform CSI reporting for multi-TRP/multi-panel.
    Type: Application
    Filed: March 10, 2023
    Publication date: July 23, 2026
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Jing Wang, Lan Chen
  • Publication number: 20260214670
    Abstract: A terminal according to one aspect of the present disclosure includes: a receiving section that receives a first downlink control channel used for a trigger of a random access procedure, a second downlink control channel for scheduling a downlink shared channel for a response signal in the random access procedure, and the downlink shared channel; and a control section that determines, when a case is supported in which the first downlink control channel and the downlink shared channel are transmitted from different cells or different transmission/reception points, quasi-co-location (QCL) assumption in reception of the downlink shared channel, based on at least one of a scenario applied to the random access procedure and configuration information of the transmission/reception points.
    Type: Application
    Filed: December 23, 2022
    Publication date: July 23, 2026
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Weiqi Sun, Jing Wang, Lan Chen
  • Patent number: 12690040
    Abstract: A terminal is disclosed including a control unit that is capable of multiplexing a first uplink control information of a first priority and a second uplink control information of a second priority in an uplink control channel; and a communication unit that transmits an uplink signal via the uplink control channel, wherein the control unit determines a resource of the uplink control channel based on whether the first uplink control information is associated with the first uplink control information.
    Type: Grant
    Filed: May 10, 2021
    Date of Patent: July 21, 2026
    Assignee: NTT DOCOMO, INC.
    Inventors: Yuki Takahashi, Satoshi Nagata, Qiping Pi, Jing Wang, Lan Chen
  • Publication number: 20260206059
    Abstract: A terminal according to an aspect of the present disclosure includes a receiving section that receives indication information related to the number of repetitions of a message 3, and a control section that determines the number of repetitions of the message 3, based on the indication information and information related to a repetition of a message 1 in random access procedure including a repetition of the message 3. According to an aspect of the present disclosure, it is possible to enhance coverage in random access procedure.
    Type: Application
    Filed: July 5, 2022
    Publication date: July 16, 2026
    Applicant: NTT DOCOMO, INC.
    Inventors: Naoya SHIBAIKE, Yuki MATSUMURA, Satoshi NAGATA, Qiping PI, Jing WANG, Lan CHEN, Yiyi LU, Yong LI
  • Publication number: 20260206033
    Abstract: A terminal according to one aspect of the present disclosure includes a receiving section that receives a MAC CE (MAC Control Element) including cell switching indication information on cell switching from a serving cell to a candidate cell, and a control section that controls, based on the cell switching indication information, a configuration of a window or a timer for switching from the serving cell to the candidate cell, and operation after the cell switching. The control section controls the window or the timer, based on a MAC reset configuration indicating the operation after the cell switching.
    Type: Application
    Filed: December 15, 2022
    Publication date: July 16, 2026
    Applicant: NTT DOCOMO, INC.
    Inventors: Yuki Matsumura, Satoshi Nagata, Jing Wang, Lan Chen