公开(公告)号：US20200015119A1

公开(公告)日：2020-01-09

申请号：US16490268

申请日：2017-03-02

申请人： NTT DOCOMO, INC.

发明人： Kazuki Takeda ,  Satoshi Nagata ,  Qun Zhao ,  Xiaohang Chen ,  Xiaolin Hou ,  Huiling Jiang

IPC分类号： H04W28/06 ,  H04W28/04 ,  H04L1/00 ,  H04L1/18

摘要： The present invention is designed to prevent communication performance from dropping in long TTI when preemption of long TTI by short TTI occurs. According to one aspect of the present invention, a user terminal has a receiving section that receives downlink (DL) data based on downlink control information (DCI) in a first transmission time interval (TTI), a transmission section that transmits delivery acknowledgement information in response to the DL data, and a control section that controls timing of transmitting the delivery acknowledgement information when indication information regarding preemption of the first TTI by a second TTI shorter than the first TTI is received in the receiving section.

公开(公告)号：US20190208504A1

公开(公告)日：2019-07-04

申请号：US16323555

申请日：2017-08-10

申请人： NTT DOCOMO, INC.

发明人： Shinpei Yasukawa ,  Satoshi Nagata ,  Qun Zhao ,  Jing Wang ,  Huan Wang ,  Liu Liu ,  Anxin Li ,  Huiling Jiang

IPC分类号： H04W72/02 ,  H04W74/08 ,  H04W24/10

CPC分类号： H04W72/02 ,  H04W4/40 ,  H04W24/10 ,  H04W74/0816 ,  H04W92/18

摘要： A user equipment including: a selection unit that selects, based on a result of sensing performed in a first time window and on a transmission interval of a signal, one or more resource candidates in a second time window after the first time window; and a transmission unit that selects a resource for transmitting a signal from the selected one or more resource candidates, and transmits the signal.

公开(公告)号：US20190159224A1

公开(公告)日：2019-05-23

申请号：US16099924

申请日：2017-04-14

申请人： NTT DOCOMO, INC.

发明人： Shimpei Yasukawa ,  Satoshi Nagata ,  Qun Zhao ,  Liu Liu ,  Anxin Li ,  Huiling Jiang

IPC分类号： H04W72/12 ,  H04W4/40 ,  H04W24/10 ,  H04W76/14

摘要： There is provided user equipment of a radio communication system that supports D2D communication. The user equipment includes a storage that stores a Gap pattern indicating a Gap period repeatedly configured in a radio resource for UL; and a transmitter that transmits a signal of D2D communication in a Gap period indicated by the Gap pattern stored in the storage.

公开(公告)号：US20190110308A1

公开(公告)日：2019-04-11

申请号：US16088431

申请日：2017-03-23

申请人： NTT DOCOMO, INC.

发明人： Shimpei Yasukawa ,  Satoshi Nagata ,  Qun Zhao

IPC分类号： H04W72/12 ,  H04W72/04

摘要： Provided is a user equipment including a transmission and reception unit that transmits and receives a radio signal to and from a base station, and a transmission plan notification unit that transmits, to the base station, an uplink data transmission plan related to a semi-persistent scheduling (SPS) configuration.

公开(公告)号：US20180279258A1

公开(公告)日：2018-09-27

申请号：US15762373

申请日：2016-09-23

申请人： NTT DOCOMO, INC.

发明人： Shimpei Yasukawa ,  Satoshi Nagata ,  Qun Zhao ,  Yongbo Zeng ,  Yongsheng Zhang

IPC分类号： H04W72/02 ,  H04W72/04

摘要： A user apparatus in a mobile communication system includes an allocation means that divides a message that includes control information and data into a plurality of partial messages, and allocates resources included in one or more resource pools to the plurality of partial messages; and a transmission means that transmits the plurality of partial messages using the resources allocated by the allocation means.

公开(公告)号：US20180270776A1

公开(公告)日：2018-09-20

申请号：US15763015

申请日：2016-09-27

申请人： NTT DOCOMO, INC.

发明人： Shimpei Yasukawa ,  Satoshi Nagata ,  Hiroki Harada ,  Qun Zhao ,  Yongbo Zeng

IPC分类号： H04W56/00

CPC分类号： H04W56/0025 ,  H04W56/0015 ,  H04W56/002 ,  H04W92/18

摘要： There is provided a user apparatus of a radio communication system supporting D2D communication, the user apparatus including a receiver configured to receive a first synchronization signal transmitted from a base station, a second synchronization signal transmitted from another user apparauts, or an external synchronization signal or external synchronization information transmitted from an external synchronization source; and a synchronization processor configured to execute synchronization using the first synchronization signal, the second synchronization signal, or the external synchronization signal or the external synchronization information received by the receiver; wherein, upon detecting that the user apparatus is outside a coverage area of the base station or outside an area in which the synchronization signal or the synchronization information can be received, the receiver is configured to receive the second synchronization signal by executing an initial search within a time window defined for monitoring the second synchronization signal.

公开(公告)号：US20180234928A1

公开(公告)日：2018-08-16

申请号：US15751053

申请日：2016-08-10

申请人： NTT DOCOMO, INC.

发明人： Shimpei Yasukawa ,  Satoshi Nagata ,  Qun Zhao

IPC分类号： H04W56/00 ,  H04W4/40

CPC分类号： H04W56/001 ,  H04W4/40 ,  H04W4/70 ,  H04W56/00 ,  H04W56/002 ,  H04W92/18 ,  H04W92/20

摘要： There is provided a user apparatus of a radio communication system supporting D2D communication, the user apparatus including a receiver configured to receive a signal of an external synchronization source, a synchronization signal transmitted from a base station, or a synchronization signal transmitted from another user apparatus; and a synchronization processor configured to execute, in accordance with priority information indicating priority order of signals used for synchronization, radio frame synchronization and frequency synchronization using any one of the signal of the external synchronization source, the synchronization signal transmitted from the base station, or the synchronization signal transmitted from the other user apparatus, which is received by the receiver.

公开(公告)号：US20180234220A1

公开(公告)日：2018-08-16

申请号：US15751578

申请日：2016-08-10

申请人： NTT DOCOMO, INC.

发明人： Shimpei Yasukawa ,  Satoshi Nagata ,  Qun Zhao

IPC分类号： H04L5/00 ,  H04W4/40 ,  H04W72/10 ,  H04J11/00

CPC分类号： H04L5/0042 ,  H04J11/00 ,  H04J2211/005 ,  H04L5/0044 ,  H04L5/0051 ,  H04L5/0053 ,  H04W4/40 ,  H04W72/04 ,  H04W72/10 ,  H04W92/18

摘要： A user device in a wireless communication system supporting D2D communication, includes a first transmitter configured to transmit control information for D2D by using a physical control channel for D2D in a wireless frame configuration in which the physical control channel for D2D and a physical data channel for D2D are frequency-multiplexed; and a second transmitter configured to transmit data corresponding to the control information for D2D by using the physical data channel for D2D in the wireless frame configuration in which the physical control channel for D2D and the physical data channel for D2D are multiplexed in a frequency domain.

公开(公告)号：US20170188261A1

公开(公告)日：2017-06-29

申请号：US15308789

申请日：2015-04-09

申请人： NTT DOCOMO, INC.

发明人： Hiroki Harada ,  Shimpei Yasukawa ,  Satoshi Nagata ,  Qun Zhao ,  Yongbo Zeng ,  Yongsheng Zhang

IPC分类号： H04W28/04 ,  H04W8/00 ,  H04W72/12 ,  H04L12/26

CPC分类号： H04W74/085 ,  H04L43/065 ,  H04W8/005 ,  H04W72/02 ,  H04W72/1263 ,  H04W74/0858

摘要： User equipment for receiving a discovery signal to be used for inter-user equipment discovery includes a discovery signal receiver that receives the discovery signal transmitted, within a resource pool for transmitting the discovery signal, from any other user equipment; a collision detector that detects collision of discovery signals; and a reporting unit that reports a detected result of the collision to a base station.

公开(公告)号：US20170187558A1

公开(公告)日：2017-06-29

申请号：US15308783

申请日：2015-04-07

申请人： NTT DOCOMO, INC.

发明人： Shimpei Yasukawa ,  Hiroki Harada ,  Yongbo Zeng ,  Qun Zhao ,  Yongsheng Zhang

IPC分类号： H04L27/26 ,  H04W92/18 ,  H04B1/10 ,  H04W72/12 ,  H04J11/00 ,  H04W72/08

CPC分类号： H04L27/2607 ,  H04B1/10 ,  H04J11/0033 ,  H04J11/005 ,  H04J2211/005 ,  H04L5/0032 ,  H04L5/0073 ,  H04L27/2666 ,  H04L27/2675 ,  H04L27/2678 ,  H04W72/082 ,  H04W72/12 ,  H04W76/14 ,  H04W92/18

摘要： A user apparatus is provided. The user apparatus includes a cyclic prefix length detection unit configured to detect a cyclic prefix length used by a user apparatus of a neighbor cell or out of coverage; and an interference detection unit configured to detect interference caused by a cyclic prefix length difference, a synchronization timing difference, or collision of resources used for signal transmission. Further, a base station is provided. The base station includes a reception unit configured to receive from a user apparatus an interference result caused by a cyclic prefix length difference; a resource allocation unit configured to set resources based on the received interference result; and a transmission unit configured to transmit the set resource information to the user apparatus.