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).
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Publication number: 20260292629Abstract: A terminal according to one aspect of the present disclosure includes a receiving section that receives information indicating switching of an active non-serving cell and information related to a transmission configuration indication (TCI) state to be activated for a non-serving cell after switching, and a control section that, when a non-serving cell before switching and the non-serving cell after the switching are associated with a same timing advance group, controls to perform UL transmission in the non-serving cell after the switching by using a timing advance different from a timing advance for the non-serving cell before the switching.Type: ApplicationFiled: April 23, 2024Publication date: September 24, 2026Applicant: NTT DOCOMO, INC.Inventors: Yuki Matsumura, Satoshi Nagata, Weidi Sun, Jing Wang, Lan Chen
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Patent number: 12744578Abstract: A terminal according to one aspect of the present disclosure includes a control section that selects a beam to be reported, based on at least one of an uplink (UL) beam quality and a downlink (DL) beam quality, and a transmitting section that transmits a beam report including at least one of the UL beam quality and the DL beam quality of the selected beam. According to one aspect of the present disclosure, a report (CSI report) related to a beam can be appropriately executed.Type: GrantFiled: July 30, 2021Date of Patent: September 22, 2026Assignee: NTT DOCOMO, INC.Inventors: Yuki Matsumura, Satoshi Nagata, Jing Wang, Weiqi Sun, Lan Chen
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Publication number: 20260280624Abstract: A terminal according to an aspect of the present disclosure includes: a receiving section that receives downlink control information including information related to a codebook subset indicating a precoder corresponding to a first sub-range including rank 1 to rank 4 and a precoder corresponding to a second sub-range including rank 5 to rank 8; and a control section that judges, based on the precoder indicated by the information, a precoder for eight ports for an uplink transmission, wherein the control section judges the precoder for eight ports by using a same codepoint for the first sub-range and the second sub-range. An aspect of the present disclosure enables UL transmission using more than four antenna ports to be appropriately controlled.Type: ApplicationFiled: April 5, 2023Publication date: September 17, 2026Applicant: NTT DOCOMO, INCInventors: Yuki Matsumura, Naoya Shibaike, Satoshi Nagata, Jing Wang, Lan Chen
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Publication number: 20260282101Abstract: A terminal according to one aspect of the present disclosure includes a receiving section that receives a downlink control channel supporting triggering of a random access preamble (PRACH) for a plurality of candidate cells, and a control section that judges, based on the downlink control channel, one or more candidate cells for which transmission of the PRACH is performed. The plurality of candidate cells include a first candidate cell with monitoring of a response signal (RAR) to the PRACH and a second candidate cell without monitoring of an PAR to the PRACH.Type: ApplicationFiled: April 6, 2023Publication date: September 17, 2026Applicant: NTT DOCOMO, INC.Inventors: Yuki Matsumura, Mamoru Okumura, Satoshi Nagata, Jing Wang, Lan Chen
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Publication number: 20260270914Abstract: A terminal according to one aspect of the present disclosure includes a receiving section that receives configuration information related to a sounding reference signal (SRS), and a control section that, when UL transmission is performed using an SRS resource configured by the configuration information, determines timing advance to be applied to the UL transmission, based on a timing advance group associated with an SRS resource set corresponding to the SRS resource.Type: ApplicationFiled: March 30, 2023Publication date: September 10, 2026Applicant: NTT DOCOMO, INC.Inventors: Yuki Matsumura, Satoshi Nagata, Weiqi Sun, Jing Wang, Lan Chen
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Publication number: 20260271084Abstract: A terminal according to one aspect of the present disclosure includes: a receiving section that receives a configuration of multiple repetitions of a random access channel; and a control section that determines a radio network temporary identifier (RNTI) to be used for scheduling of responses to the multiple repetitions, based on multiple random access occasions to be used for the multiple respective repetitions.Type: ApplicationFiled: April 11, 2023Publication date: September 10, 2026Applicant: NTT DOCOMO, INC.Inventors: Naoya SHIBAIKE, Yuki MATSUMURA, Satoshi NAGATA, Qiping PI, Jing WANG, Lan CHEN
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Publication number: 20260270998Abstract: A terminal according to one aspect of the present disclosure includes a receiving section that receives downlink control information (DCI) for scheduling an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) to be repeatedly transmitted, a transmitting section that transmits a plurality of transport blocks to a plurality of transmission/reception points (TRPs) by using the PUSCH, and a control section that determines a size of at least one of the plurality of transport blocks, based on a codepoint of a transmission configuration indication (TCI) field included in a field of the DCI. According to one aspect of the present disclosure, it is possible to appropriately perform PUSCH transmission.Type: ApplicationFiled: June 30, 2022Publication date: September 10, 2026Applicant: NTT DOCOMO, INC.Inventors: Yuki Matsumura, Satoshi Nagata, Jing Wang, Lan Chen
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Publication number: 20260262088Abstract: This communication device comprises: a control unit that, when switching the state relating to a transfer operation executed between a base station and a terminal by the communication device to a first state, sets a specific period before a period of the first state, and switches said state to the first state; and a communication unit that transmits or receives a signal relating to the transfer in accordance with the first state.Type: ApplicationFiled: August 5, 2022Publication date: September 3, 2026Applicant: NTT DOCOMO, INC.Inventors: Daisuke KURITA, Hiroki HARADA, Weiqi SUN, Jing WANG, Lan CHEN
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Patent number: 12726250Abstract: A terminal includes: a control unit configured to assume a beam switching gap between a plurality of signals or channels for transmission or reception to be a sufficient time corresponding to a larger subcarrier spacing.Type: GrantFiled: August 5, 2021Date of Patent: September 1, 2026Assignee: NTT DOCOMO, INC.Inventors: Naoya Shibaike, Hiroki Harada, Satoshi Nagata, Qiping Pi, Jing Wang, Lan Chen
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Patent number: 12727000Abstract: To appropriately perform communication even when transmission with repetition is applied to DL channels transmitted from one or more TRPs. A terminal according to an aspect of the present disclosure includes a receiving section that receives multiple downlink control information transmitted using respective downlink control channels to which transmission with repetition is applied; and a control section that controls, when a downlink shared channel overlaps a resource in a control resource set including a downlink control channel to which the transmission with repetition is applied, not to use resources corresponding to a downlink control channel scheduling the downlink shared channel and a demodulation reference signal resource for an associated downlink control channel, for the downlink shared channel.Type: GrantFiled: November 2, 2021Date of Patent: September 1, 2026Assignee: NTT DOCOMO, INC.Inventors: Yuki Matsumura, Satoshi Nagata, Weiqi Sun, Jing Wang, Lan Chen
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Patent number: 12726977Abstract: A terminal according to an aspect of the present disclosure includes: a control section that, in a case where a first uplink channel and a plurality of second uplink channels having a lower priority than the first uplink channel and not overlapping in a time domain are overlapping, performs control to map at least one of uplink control information corresponding to each of the plurality of second uplink channels to the first uplink channel; and a transmitting section that uses the first uplink channel to transmit at least one of the uplink control information corresponding to each of the plurality of second uplink channels.Type: GrantFiled: September 16, 2020Date of Patent: September 1, 2026Assignee: NTT DOCOMO, INC.Inventors: Yuki Takahashi, Satoshi Nagata, Jing Wang, Lan Chen, Jialin Wu, Yong Li
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Publication number: 20260254579Abstract: A terminal according to one aspect of the present disclosure includes a receiving section that receives information related to a transmission scheme for an uplink shared channel (PUSCH) to be transmitted using at least one of a plurality of beams, panels, and transmission/reception points and downlink control information including information indicating an association between an uplink phase tracking reference signal (PTRS) and a demodulation reference signal (DMRS) for the PUSCH, and a control section that determines an association between ports of the PTRS and ports of the DMRS, based on the transmission scheme to be applied to the PUSCH, the downlink control information, and a number of the ports of the PTRS to be applied.Type: ApplicationFiled: July 8, 2022Publication date: August 27, 2026Applicant: NTT DOCOMO, INC.Inventors: Yuki Matsumura, Satoshi Nagata, Weiqi Sun, Jing Wang, Lan Chen
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Publication number: 20260254703Abstract: A terminal includes: a control unit configured to: map bit sequences to indices; output one-hot encoder vectors associated with the indices; and pre-train a neural network (NN) to output modulated symbols in response to the one-hot encoder vectors and a variance of phase noise as inputs; and a transmitting unit configured to carry out a transmission to a base station by using modulated symbols that are selected based on a constellation generated by the pre-trained NN.Type: ApplicationFiled: May 8, 2023Publication date: August 27, 2026Applicant: NTT DOCOMO, INC.Inventors: Naoya Shibaike, Takanobu Onoda, Satoshi Nagata, Wenjia Liu, Xiaolin Hou, Lan Chen, Liu Liu, Xiaorui Yan
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Publication number: 20260254594Abstract: A terminal according to one aspect of the present disclosure includes: a receiving section that receives downlink control information (DCI) including a field indicating switch of a serving cell; and a control section that switches a cell in which transmission/reception is performed, based on the DCI. According to one aspect of the present disclosure, it is possible to appropriately perform configuration related to cells.Type: ApplicationFiled: July 7, 2022Publication date: August 27, 2026Applicant: NTT DOCOMO, INC.Inventors: Yuki Matsumura, Satoshi Nagata, Jing Wang, Lan Chen
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Publication number: 20260254497Abstract: A terminal according to an aspect of the present disclosure includes: a receiving section that receives one or more parameters for a plurality of transmission/reception points (TRPs) for coherent joint transmission (CJT); and a control section that determines, based on the one or more parameters, the maximum number of non-zero coefficients for the plurality of TRPs. An aspect of the present disclosure allows appropriate CSI/codebook for CJT to be determined.Type: ApplicationFiled: July 8, 2022Publication date: August 27, 2026Applicant: NTT DOCOMO, INC.Inventors: Yuki Matsumura, Satoshi Nagata, Jing Wang, Lan Chen
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Patent number: 12719556Abstract: Provided in the embodiments of the present disclosure are a receiving device and a transmitting device. The receiving device according to the embodiments of the present disclosure includes: a control unit, configured to determine information on intensity of a light-of-sight (LOS) channel component in a communication channel; and a sending unit, configured to send the determined information to a transmitting device. The transmitting device according to the embodiments of the present disclosure includes: a transceiving unit, which includes a first antenna array; and a control unit, configured to obtain information about the intensity of a light-of-sight (LOS) channel component in a communication channel, and to determine a configuration mode of the first antenna array according to the information.Type: GrantFiled: November 24, 2021Date of Patent: August 25, 2026Assignee: NTT DOCOMO, INC.Inventors: Xiang Li, Xiaolin Hou, Xin Wang, Lan Chen, Satoshi Suyama, Tatsuki Okuyama
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Publication number: 20260246595Abstract: 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: ApplicationFiled: June 30, 2022Publication date: August 20, 2026Applicant: NTT DOCOMO, INC.Inventors: Yuki Matsumura, Satoshi Nagata, Jing Wang, Lan Chen
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Publication number: 20260247350Abstract: 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: ApplicationFiled: March 10, 2023Publication date: August 20, 2026Applicant: NTT DOCOMO, INC.Inventors: Naoya Shibaike, Satoshi Nagata, Wenjia Liu, Juan Liu, Xiaolin Hou, Lan Chen, Peisen Wang
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Publication number: 20260238266Abstract: 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: ApplicationFiled: February 10, 2023Publication date: August 13, 2026Applicant: 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
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Publication number: 20260239233Abstract: 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: ApplicationFiled: February 22, 2023Publication date: August 13, 2026Applicant: NTT DOCOMO, INC.Inventors: Yuki Matsumura, Satoshi Nagata, Weiqi Sun, Jing Wang, Lan Chen