公开(公告)号：EP3383112A1

公开(公告)日：2018-10-03

申请号：EP17735997.3

申请日：2017-01-05

申请人： NTT DOCOMO, INC.

发明人： TAKEDA, Kazuaki ,  TAKEDA, Kazuki ,  NAGATA, Satoshi

IPC分类号： H04W72/04 ,  H04J11/00 ,  H04L27/00

CPC分类号： H04W72/042 ,  H04J11/00 ,  H04L5/0094 ,  H04L27/00 ,  H04L27/2602

摘要： In order to perform communications using a resource of a smaller frequency unit (for example, subcarrier unit) than the resource allocation unit in the existing LTE system, the present invention provides a user terminal including: a reception section that receives downlink control information; a transmission section that transmits an uplink shared channel based on the downlink control information; and a control section that determines a subcarrier used for transmission of the uplink shared channel, based on an offset value associated with a given field value in the downlink control information.

公开(公告)号：EP3373644A1

公开(公告)日：2018-09-12

申请号：EP16862151.4

申请日：2016-11-02

申请人： NTT DOCOMO, INC.

发明人： TAKAHASHI, Hideaki ,  HAPSARI, Wuri Andarmawanti ,  TAKEDA, Kazuaki

IPC分类号： H04W28/06

CPC分类号： H04W72/0446 ,  H04W28/06

摘要： An object is to provide a user device, a radio base station, and a radio communication method that are capable of extending a predetermined number of spare bits included in notification information such as MIB to be utilized for a plurality of purposes. The user device determines contents of the notification information. The notification information includes a frame (310) having a plurality of slots (410) and a frame (320) having a plurality of slots (420) to each of which system information of a same type is assigned. The system information includes spare bits (500) of 10 bits. The spare bits assigned to the slot (410) are used for a first purpose, and the spare bits assigned to the slot (420) are used for a second purpose that is different from the first purpose.

公开(公告)号：EP3355500A1

公开(公告)日：2018-08-01

申请号：EP16848500.1

申请日：2016-09-08

申请人： NTT DOCOMO, INC.

发明人： MATSUMURA, Yuki ,  SANO, Yousuke ,  TAKEDA, Kazuaki ,  NAGATA, Satoshi

IPC分类号： H04J99/00 ,  H04W52/24 ,  H04W72/04

CPC分类号： H04W72/0473 ,  H04L5/0053 ,  H04L5/0073 ,  H04W52/24 ,  H04W52/244 ,  H04W52/248 ,  H04W52/42 ,  H04W72/04 ,  H04W72/042

摘要： To enable communication to be performed with a communication scheme suitable for the future radio communication system where a plurality of user terminals is multiplexed in the power domain, a user terminal of the present invention is provided with a reception section that receives a downlink (DL) signal to the user terminal, and a decoding section that decodes the DL signal to the user terminal, where at least one of a cyclic prefix (CP) length, symbol length and transmission time interval (TTI) length is different between the DL signal to the user terminal and a DL signal to another user terminal multiplexed in the power domain.

公开(公告)号：EP3352520A1

公开(公告)日：2018-07-25

申请号：EP16848635.5

申请日：2016-09-23

申请人： NTT DOCOMO, INC.

发明人： MOROGA, Hideyuki ,  TAKEDA, Kazuaki ,  JIANG, Huiling ,  LIU, Liu ,  MU, Qin

IPC分类号： H04W72/14 ,  H04W72/04 ,  H04W74/08

CPC分类号： H04W74/0833 ,  H04L1/1812 ,  H04L1/189 ,  H04W72/04 ,  H04W72/0453 ,  H04W72/14 ,  H04W74/08

摘要： The present invention is designed so that communication is carried out adequately even when repetitious transmission is applied to a control channel. According to one aspect of the present invention, a user terminal, in which a band to use is limited to a partial narrow band in a system band, has a transmitting/receiving section that transmits and/or receives a signal, and a control section that controls repetitious reception and/or repetitious transmission of a control channel in a random access procedure, based on a coverage enhancement level for a random access channel.

公开(公告)号：EP2928249B1

公开(公告)日：2018-05-30

申请号：EP13861178.5

申请日：2013-11-01

申请人： NTT DOCOMO, INC.

发明人： TAKEDA, Kazuaki ,  NAGATA, Satoshi ,  TAKAHASHI, Hideaki ,  ISHII, Hiroyuki

IPC分类号： H04W72/04 ,  H04W16/32 ,  H04W48/16

CPC分类号： H04W74/002 ,  H04L5/0048 ,  H04L25/00 ,  H04L25/0224 ,  H04L27/2601 ,  H04W48/16 ,  H04W72/0406 ,  H04W72/12 ,  H04W88/02 ,  H04W88/08

摘要： The present invention is designed so that a fading frequency estimation method that can improve the mobility of user terminals in a HetNet can be provided. The fading frequency estimation method according to the present invention includes the steps, in which a radio base station arranges reference signals, using an arrangement format, in which the reference signals, which are used to estimate the fading frequency in the user terminal, are arranged in a relatively high density, in at least part of the radio resources allocated for a downlink shared data channel, and transmits allocation information of the radio resources for the downlink shared data channel to the user terminal, and the user terminal estimates the fading frequency based on the channel estimation values of the reference signals, and transmits the estimated fading frequency to the radio base station in response to a transmission request from the radio base station.

公开(公告)号：EP3316609A1

公开(公告)日：2018-05-02

申请号：EP16814462.4

申请日：2016-06-23

申请人： NTT DOCOMO, INC.

发明人： TAKAHASHI, Hideaki ,  TAKEDA, Kazuaki

IPC分类号： H04W8/24 ,  H04W16/28 ,  H04W28/06

CPC分类号： H04W72/0413 ,  H04B7/0413 ,  H04B7/0417 ,  H04B7/063 ,  H04B7/0647 ,  H04B7/0697 ,  H04W8/24 ,  H04W16/28 ,  H04W24/10

摘要： A user apparatus configured to perform communication with a base station in a mobile communication system that supports downlink spatial multiplexing, including: transmission means configured to transmit capability information of the user apparatus to the base station; reception means configured to receive configuration information from the base station; bit width determination means configured, if a parameter indicating a transmission mode corresponding to the downlink spatial multiplexing and predetermined additional information are received as the configuration information, to determine a bit width of a rank indicator based on the predetermined additional information.

摘要翻译： 一种用户装置，在支持下行链路空间复用的移动通信系统中与基站进行通信，其特征在于，包括：发送单元，将所述用户装置的能力信息发送给所述基站; 接收装置，被配置为从所述基站接收配置信息; 比特宽度确定装置，如果接收到指示对应于下行链路空间复用的传输模式的参数和预定附加信息作为配置信息，则基于预定附加信息确定秩指示符的比特宽度。

公开(公告)号：EP2779735B1

公开(公告)日：2018-01-03

申请号：EP12847366.7

申请日：2012-11-08

申请人： NTT DOCOMO, INC.

发明人： TAKEDA, Kazuaki ,  LIU, Liu ,  CHEN, Lan ,  MU, Qin ,  WANG, Wenbo

IPC分类号： H04L5/14 ,  H04L5/00 ,  H04W72/04 ,  H04W72/12

CPC分类号： H04W72/042 ,  H04J3/00 ,  H04L5/001 ,  H04L5/0053 ,  H04L5/0094 ,  H04L5/1469 ,  H04W72/1289

摘要： According to the present invention, even when the ratio between uplink subframes and downlink subframes is changed in each component carrier in TDD carrier aggregation, it is still possible to prevent a decrease in capacity. With the radio communication method according to the present invention, a radio base station apparatus generates a downlink control channel signal containing downlink control information including carrier indicator field information, and transmits the downlink control channel signal to a user terminal, and the user terminal receives the downlink control channel signal, and executes signal processing with respect to the downlink signal in accordance with the downlink control information. In this case, the carrier indicator field information is information which associates a carrier index and the index of a secondary cell subframe to be scheduled.

公开(公告)号：EP3253112A1

公开(公告)日：2017-12-06

申请号：EP16743515.5

申请日：2016-01-29

申请人： NTT DOCOMO, INC.

发明人： TAKEDA, Kazuki ,  UCHINO, Tooru ,  TAKEDA, Kazuaki ,  NAGATA, Satoshi

IPC分类号： H04W24/10 ,  H04W72/04

CPC分类号： H04W24/10 ,  H04L1/0026 ,  H04L1/0027 ,  H04L1/0029 ,  H04L5/001 ,  H04W72/04

摘要： An object is to perform flexible aperiodic CSI reporting even with a larger number of component carriers that can be allocated to each user terminal than in an existing system. A user terminal of this invention communicates with a radio base station through a plurality of serving cells in different component carriers. The user terminal includes: a receiving section that receives an uplink scheduling grant including an instruction to transmit channel state information of a cell set of at least one serving cell; and a transmitting section that transmits channel state information of a different cell set through a physical uplink shared channel designated by the uplink scheduling grant, depending on the uplink scheduling grant.

摘要翻译： 目的在于即使在可以分配给每个用户终端的分量载波数量大于现有系统中的分量载波数量的情况下执行灵活的非周期性CSI报告。 本发明的用户终端通过不同分量载波中的多个服务小区与无线基站进行通信。 该用户终端包括：接收部件，接收包括用于发送至少一个服务小区的小区组的信道状态信息的指令的上行链路调度许可; 以及发送部分，其根据上行链路调度许可，通过由上行链路调度许可指定的物理上行链路共享信道来发送不同小区集合的信道状态信息。

公开(公告)号：EP3253100A1

公开(公告)日：2017-12-06

申请号：EP16743519.7

申请日：2016-01-29

申请人： NTT DOCOMO, INC.

发明人： TAKEDA, Kazuki ,  UCHINO, Tooru ,  TAKEDA, Kazuaki ,  NAGATA, Satoshi

IPC分类号： H04W16/14 ,  H04J1/00 ,  H04J11/00 ,  H04W16/32 ,  H04W72/04

CPC分类号： H04L5/0053 ,  H04J1/00 ,  H04J11/00 ,  H04L1/1671 ,  H04L5/001 ,  H04W16/14 ,  H04W16/32 ,  H04W72/04 ,  H04W72/042 ,  H04W72/044

摘要： The present invention is designed so that uplink control signals can be transmitted adequately even when the number of component carriers that can be configured in a user terminal is expanded. A user terminal can communicate by using six or more component carriers, and has a receive receiving section that receives a DL signal, a transmission section that transmits a UL control signal, which includes a delivery acknowledgement signal in response to the DL signal, and a control section that controls a format to apply to the UL control signal, and the control section applies a format, having large capacity in comparison to a PUCCH format of an existing system in which the number of component carriers to be configured is five or less, to the UL control signal.

摘要翻译： 本发明被设计为使得即使在用户终端中可配置的分量载波的数量被扩展时，也能够充分地发送上行链路控制信号。 用户终端可以通过使用六个或更多个分量载波进行通信，并且具有：接收接收部分，其接收DL信号;发送部分，其发送UL控制信号，该UL控制信号包括响应于DL信号的发送确认信号;以及 控制单元，其控制应用于所述UL控制信号的格式，并且所述控制单元应用与其中要配置的分量载波的数目等于或小于5的现有系统的PUCCH格式相比具有大容量的格式， 到UL控制信号。

公开(公告)号：EP3217746A1

公开(公告)日：2017-09-13

申请号：EP15856467.4

申请日：2015-10-09

申请人： NTT DOCOMO, INC.

发明人： TAKEDA, Kazuaki ,  YASUKAWA, Shimpei ,  MOROGA, Hideyuki ,  NAGATA, Satoshi

IPC分类号： H04W72/04 ,  H04W72/12 ,  H04W74/08

CPC分类号： H04W72/0406 ,  H04W4/70 ,  H04W72/04 ,  H04W72/0453 ,  H04W72/12 ,  H04W74/08 ,  H04W74/0833

摘要： The present invention is designed to optimize the uplink access procedure even when the band to use is limited to partial narrow bands in a system band. A user terminal, in which the band to use is limited to a partial narrow band in a system band, has a receiving section that receives system information that includes indication information of an uplink carrier frequency, from a radio base station, as system information for narrow bands, which is different from system information for the system band, and a transmission section that transmits a random access preamble to the radio base station in one of a plurality of narrow bands that are specified by the indication information of the uplink carrier frequency.

摘要翻译： 即使当要使用的频带限于系统频带中的部分窄带时，本发明也被设计为优化上行链路接入过程。 其中使用的频带限于系统频带中的部分窄带的用户终端具有接收部分，该接收部分从无线电基站接收包括上行链路载波频率的指示信息的系统信息，作为 与系统频带的系统信息不同的窄频带，以及发送部，其在由上行链路载波的指示信息指定的多个窄频带中的一个频带中向无线基站发送随机接入前导码。