公开(公告)号：US20220408322A1

公开(公告)日：2022-12-22

申请号：US17634885

申请日：2019-08-14

申请人： NTT DOCOMO, INC.

发明人： Tooru Uchino ,  Tianyang Min ,  Hideaki Takahashi

IPC分类号： H04W36/00

摘要： An SN (100C) includes a transmitting unit (110b) that transmits, to an MN (100A) to which a terminal (200) is connected, a first message including configuration information of a cell formed by the SN (100C), and a control unit (140b) that determines to delete the configuration information of the cell according to a state of the cell. The transmitting unit (110b) transmits, to the MN (100A), a second message instructing deletion of the configuration information of the cell.

公开(公告)号：US11510280B2

公开(公告)日：2022-11-22

申请号：US16496188

申请日：2018-03-20

申请人： NTT DOCOMO, INC.

发明人： Hideaki Takahashi ,  Tooru Uchino ,  Wuri Andarmawanti Hapsari ,  Anil Umesh

IPC分类号： H04W88/02 ,  H04W76/36 ,  H04W80/02 ,  H04W28/08 ,  H04W76/19 ,  H04W76/27

摘要： A user equipment is disclosed including a receiver that receives an RRC message related to configuration information of a second radio base station for a split hearer that splits from the second radio base station toward a first radio base station, and a processor that releases resources related to a radio link of the second radio base station based on the RRC message when a radio link failure in the second radio base station is detected.

公开(公告)号：US11490389B2

公开(公告)日：2022-11-01

申请号：US16336966

申请日：2017-09-29

申请人： NTT DOCOMO, INC.

发明人： Hideaki Takahashi ,  Kunihiko Teshima ,  Hiromasa Umeda ,  Sadayuki Abeta

IPC分类号： H04L12/28 ,  H04W72/04 ,  H04J1/16

摘要： A user equipment in a radio communication system including the user equipment and a base station, the user equipment including: a transmission unit that transmits a first maximum bandwidth, which is a maximum bandwidth available to the user equipment for communication, to the base station; and a reception unit that receives, from the base station, a center frequency or frequencies on both ends of a band having a bandwidth, which is equal to or less than the first maximum bandwidth, within a band having a second maximum bandwidth that is a maximum bandwidth available to the base station for communication.

公开(公告)号：US20220346170A1

公开(公告)日：2022-10-27

申请号：US17432299

申请日：2019-02-25

申请人： NTT DOCOMO, INC.

发明人： Hideaki Takahashi ,  Hiromasa Umeda ,  Yuta Oguma

IPC分类号： H04W76/16 ,  H04W8/24

摘要： A user equipment includes a receiving unit receiving band information of a RAT1 and a RAT2 from a base station, a control unit determining a parameter1 indicating a supported bandwidth combination (BWC) for the RAT1's part for inter-band EN-DC of the RAT1 and the RAT2 and a parameter2 indicating a BWC supported for all bands of the inter-band EN-DC and the intra-band EN-DC of the RAT1 and the RAT2 for dual connectivity of the RAT1 and the RAT2, the dual connectivity being composed of the inter-band EN-DC and the intra-band EN-DC of the RAT1 and the RAT2, for the band combination of the inter-band EN-DC, any combination of the RAT2's part of the BWC indicated by the parameter1 and the RAT1's part of the BWC indicated by the parameter1 is supported, and a transmitting unit transmitting terminal capability information including the determined parameter1 and parameter2 to the base station.

公开(公告)号：US20220346095A1

公开(公告)日：2022-10-27

申请号：US17754093

申请日：2019-09-30

申请人： NTT DOCOMO, INC.

发明人： Hideaki Takahashi ,  Hiromasa Umeda ,  Yuta Oguma

IPC分类号： H04W72/04

摘要： A terminal is provided. The terminal includes a reception unit configured to receive band information of a first radio access technology (RAT) and a second RAT band from a base station apparatus; a control unit configured to determine a first parameter indicating a supported bandwidth combination set for a first RAT component of a band combination of a dual connectivity of the first RAT and the second RAT (EN-DC), a second parameter indicating a supported bandwidth combination set for a second RAT component of the EN-DC band combination, and a third parameter indicating a supported bandwidth combination set for an intra-band component of the first RAT and the second RAT, of the EN-DC band combination; and a transmission unit configured to transmit terminal capability information including the determined first, second, and third parameters to the base station apparatus.

公开(公告)号：US20220330135A1

公开(公告)日：2022-10-13

申请号：US17761836

申请日：2019-09-20

申请人： NTT DOCOMO, INC.

发明人： Hideaki Takahashi ,  Tianyang Min

IPC分类号： H04W48/06 ,  H04W76/18 ,  H04W48/08

摘要： A network transmits, toward a terminal, regulation information that regulates access to the network by the terminal. The network includes a first mobile communication network and a second mobile communication network different from the first mobile communication network, and transmits regulation information in units of the second mobile communication network toward the terminal.

公开(公告)号：US20220330114A1

公开(公告)日：2022-10-13

申请号：US17634902

申请日：2019-08-14

申请人： NTT DOCOMO, INC.

发明人： Tooru Uchino ,  Tianyang Min ,  Hideaki Takahashi

IPC分类号： H04W36/00 ,  H04W36/30

摘要： A terminal is disclosed including a receiving unit that receives, from a source radio base station, information on a candidate cell and a transition condition to the candidate cell; a control unit that performs a synchronization with the candidate cell based on the transition condition and performs a transition to a target radio base station which configures the information on the candidate cell, without transmitting a re-establishment request message, when a radio link failure is detected; and a transmitting unit that transmits a complete message to the target radio base station when the control unit performs the transition to the target radio base station, wherein the control unit includes, in the complete message, information for notifying the radio link failure.

公开(公告)号：US20220322075A1

公开(公告)日：2022-10-06

申请号：US17806418

申请日：2022-06-10

申请人： NTT DOCOMO, INC.

发明人： Hideaki Takahashi ,  Hiromasa Umeda ,  Kei Andou

IPC分类号： H04W8/24

摘要： A terminal is disclosed that includes a processor that includes, in capability information, a separation class indicating a frequency separation between a lower edge of a component carrier with a lowest frequency for supported intra-band non-contiguous carrier aggregation and an upper edge of a component carrier with a highest frequency for the supported intra-band non-contiguous carrier aggregation. The terminal further includes a transmitter that transmits the capability information to a base station, where the separation class is indicated by an index to identify a class of the frequency separation. In other aspects, a transmission method and a radio communication system are also disclosed.

公开(公告)号：US20220321195A1

公开(公告)日：2022-10-06

申请号：US17596884

申请日：2019-06-21

申请人： NTT DOCOMO, INC.

发明人： Tooru Uchino ,  Yuki Matsumura ,  Hideaki Takahashi

IPC分类号： H04B7/08 ,  H04W24/04 ,  H04L1/18

摘要： A terminal (200) configures PCell and SCell simultaneously. The terminal (200) includes a receiving unit (220) that receives a reference signal for use in a detection of a beam failure in the SCell, a controller (270) that detects the beam failure based on a reception quality of the reference signal, and a transmitting unit (210) that transmits a beam failure recovery request. The controller (270) determines that a BFR procedure is completed when a predetermined condition is satisfied.

公开(公告)号：US20220304048A1

公开(公告)日：2022-09-22

申请号：US17633842

申请日：2019-08-14

申请人： NTT DOCOMO, INC.

发明人： Hideaki Takahashi ,  Kouhei Harada ,  Akihito Hanaki

IPC分类号： H04W74/00 ,  H04W74/08

摘要： A terminal including: a reception unit configured to receive, from a base station apparatus, information instructing not to perform a random access procedure even when an event that triggers the random access procedure occurs; and a control unit configured to determine not to perform the random access procedure when the event occurs based on the information.