公开(公告)号：US11411789B2

公开(公告)日：2022-08-09

申请号：US16647172

申请日：2018-09-11

Applicant: NTT DOCOMO, INC.

Inventor： Wenjia Liu ,  Xiaolin Hou ,  Qin Mu ,  Liu Liu

IPC: H04L27/06 ,  H04L27/26 ,  H04W24/06 ,  H04W24/08 ,  H04W72/04 ,  H04W72/08

Abstract: The present disclosure provides a method and apparatus for generating spread symbols. The method includes: determining a spreading sequence according to a spreading sequence matrix, where the spreading sequence matrix is generated according to performance parameters of a plurality of user terminals; and spreading initial symbols by using the determined spreading sequence to generate spread symbols.

公开(公告)号：US11304199B2

公开(公告)日：2022-04-12

申请号：US16622678

申请日：2017-06-15

Applicant: NTT DOCOMO, INC.

Inventor： Kazuki Takeda ,  Satoshi Nagata ,  Qin Mu ,  Liu Liu

IPC: H04W72/04 ,  H04W24/08

Abstract: According to the present invention, when communication is carried out using different formats from those of existing LTE systems, control channels can be communicated properly. A user terminal, according to one aspect of the present invention, includes a receiving section that receives a DL control channel, and a control section that controls monitoring of DL control channel candidates, and the control section determines the aggregation level to monitor and/or the number of DL control channel candidates based on the DCI format and/or the DCI payload size.

公开(公告)号：US20220110160A1

公开(公告)日：2022-04-07

申请号：US16473852

申请日：2017-12-26

Applicant: NTT DOCOMO, INC.

Inventor： Kazuki Takeda ,  Satoshi Nagata ,  Qin Mu ,  Liu Liu ,  Lihui Wang ,  Jing Wang ,  Huiling Jiang

IPC: H04W74/08 ,  H04W74/00

Abstract: The present invention is designed so that communication is performed appropriately in radio communication systems that support different numerologies than existing LTE systems. A receiving section that receives a downlink control channel, and a control section that controls the detection of common search spaces, which are candidates for allocating the downlink control channel, are provided, and the control section controls the detection of one or more common search spaces with different transmission features based on information that is indicated in advance and/or information about the capabilities which the user terminal supports itself.

公开(公告)号：US11212827B2

公开(公告)日：2021-12-28

申请号：US16637863

申请日：2018-05-24

Applicant: NTT DOCOMO, INC.

Inventor： Jiahui Liu ,  Qin Mu ,  Liu Liu ,  Naoto Okubo

IPC: H04W72/12 ,  H04L1/18

Abstract: A data transmitting method is presented for implementing early acknowledgement of receipt of uplink data and new transmission scheduling. The data transmitting method for user equipment includes: receiving scheduling information from a base station; transmitting first uplink data to the base station by an initial number of retransmissions; monitoring, in a first search space, whether a first acknowledgement signal for uplink data has been received from the base station, and meanwhile, monitoring, in a second search space, whether a second acknowledgement signal for uplink data has been received from the base station; in the case that the first acknowledgement signal has been received in the first search space, stopping retransmitting the first uplink data; and in the case that the second acknowledgment signal has been received in the second search space, stopping retransmitting the first uplink data, and starting to transmit the second uplink data to the base station.

公开(公告)号：US11184896B2

公开(公告)日：2021-11-23

申请号：US16301520

申请日：2017-08-10

Applicant: NTT DOCOMO, INC.

Inventor： Kazuaki Takeda ,  Naoto Ookubo ,  Jiahui Liu ,  Qin Mu ,  Liu Liu ,  Huiling Jiang

IPC: H04W72/04 ,  H04W68/00 ,  H04W48/10 ,  H04W74/00 ,  H04L29/08 ,  H04W68/02

Abstract: The present invention provides a method for allowing user terminal to acquire information about paging physical resource blocks (PRBs), a method of allowing a base station to indicate information about paging PRBs to UE, a method of allowing UE to determine allocation of paging PRBs, a method of allowing a base station to allocate paging PRBs, a base station and UE. The above method of allowing user terminal to acquire information about paging physical resource blocks (PRBs) includes detecting an anchor PRB, reading information carried by the anchor PRB, and acquiring information about the non-anchor paging PRBs associated with the anchor PRB based on the information carried by the anchor PRB. By this method, non-anchor paging PRBs can be specified to the UE.

公开(公告)号：US11128406B2

公开(公告)日：2021-09-21

申请号：US16496240

申请日：2018-03-07

Applicant: NTT DOCOMO, INC.

Inventor： Jiahui Liu ,  Qin Mu ,  Liu Liu ,  Huiling Jiang ,  Lan Chen ,  Naoto Okubo

IPC: H04L1/16 ,  H04W52/02 ,  G16Y30/00

Abstract: This application provides data transmitting method, a data receiving method, a user equipment, and a base station, which can realize early acknowledgment of uplink data reception. The data transmitting method for a user equipment includes: transmitting uplink data to a base station with an initial retransmission times; determining, within a predetermined interval, whether an acknowledged signal of the uplink data is received from the base station, wherein in the case where the acknowledged signal is received within the predetermined interval, transmission of the uplink data is stopped; and in the case where the acknowledged signal is not received within the predetermined interval, the uplink data is transmitted to the base station in a subsequent retransmission mode, until the acknowledged signal is received from the base station or a maximum retransmission times is reached.

公开(公告)号：US20210153202A1

公开(公告)日：2021-05-20

申请号：US16622830

申请日：2017-06-15

Applicant: NTT DOCOMO, INC.

Inventor： Kazuki Takeda ,  Satoshi Nagata ,  Qin Mu ,  Liu Liu

IPC: H04W72/04 ,  H04W56/00 ,  H04W24/08 ,  H04L1/00

Abstract: A terminal is disclosed including a receiver that receives information on a control resource set including a candidate of a downlink control channel, and a processor that assumes a resource corresponding to the downlink control channel is an unavailable resource for downlink data when the control resource set overlaps with the downlink data. In other aspects, a radio communication method for a terminal is also disclosed.

公开(公告)号：US20210120574A1

公开(公告)日：2021-04-22

申请号：US16494426

申请日：2017-03-17

Applicant: NTT DOCOMO, INC.

Inventor： Kazuki Takeda ,  Satoshi Nagata ,  Qin Mu ,  Liu Liu ,  Chongning Na ,  Xin Wang ,  Jing Wang ,  Lihui Wang ,  Min Liu ,  Huiling Jiang

IPC: H04W72/12 ,  H04W72/04

Abstract: A terminal is disclosed including a receiver that receives a downlink control information and a downlink shared channel that is scheduled by the downlink control information. The terminal also includes a processor that determines an allocation of the downlink shared channel in a time domain based on a first timing indicated by a first time unit and a second timing indicated by a second time unit that are obtained from information notified by the downlink control information. In other aspects, a radio communication method is also disclosed.

公开(公告)号：US20210120557A1

公开(公告)日：2021-04-22

申请号：US16494440

申请日：2017-03-17

Applicant: NTT DOCOMO, INC.

Inventor： Kazuki Takeda ,  Satoshi Nagata ,  Qin Mu ,  Liu Liu ,  Chongning Na ,  Xin Wang ,  Jing Wang ,  Lihui Wang ,  Min Liu ,  Huiling Jiang

IPC: H04W72/04 ,  H04W24/08 ,  H04W72/12 ,  H04L5/00 ,  H04L1/18

Abstract: The present invention is designed to appropriately select PUCCH resources used to transmit HARQ-ACK. According to one aspect of the present invention, a user terminal has a control section that monitors candidate resources of one or more downlink (DL) control channels (DL) transmitted in multiple different time and/or frequency resources, and detects one or more downlink control information (DCI), and a transmission section that transmits delivery acknowledgment information in response to a downlink (DL) data channel by using an uplink (UL) control channel, and the control section selects resources for the UL control channel based on the DCI.

公开(公告)号：US10952237B2

公开(公告)日：2021-03-16

申请号：US16495382

申请日：2018-03-07

Applicant: NTT DOCOMO, INC.

Inventor： Liu Liu ,  Qin Mu ,  Jing Wang ,  Lihui Wang ,  Huiling Jiang ,  Xiaohong Zhang ,  Yong Li

IPC: H04W4/00 ,  H04W72/12 ,  H04L1/00

Abstract: The present disclosure provides a downlink control information transmission method, including generating more than one downlink control information (DCI) according to scheduling information of a user equipment (UE); determining a detection order of the more than one DCI and positions of the more than one DCI in a searching space; adding a position indication field to a respective DCI according to the detection order of the more than one DCI and the positions of the more than one DCI in the searching space; wherein, the position indication field is used to indicate a position of a next DCI of the respective DCI in the detection order; in which, a position indication field in a last DCI in the detection order is used to indicate a position of a first DCI in the detection order; and transmitting the more than one DCI in the searching space according to the positions of the more than one DCI in the searching space. The present disclosure also provides a UE-side method, a corresponding base station and a UE.