公开(公告)号：EP1978691A2

公开(公告)日：2008-10-08

申请号：EP08006795.2

申请日：2008-04-03

申请人： NTT DoCoMo, Inc.

发明人： Takahashi, Hideaki ,  Maeda, Noriyuki ,  Miura, Shunji ,  Asakura, Hiromitsu

IPC分类号： H04L12/56

CPC分类号： H04L5/0053 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0048 ,  H04L5/0058

摘要： The object of the present invention is to achieve reduction of interference between cells and improvement of maximum throughput so as to improve spectrum efficiency. A wireless base station which transmits a radio signal between itself and a plurality of mobile stations by means of OFDMA includes: a multiplexing part for generating user data; a channel assignment control part for selecting a plurality sets of sub-carriers among a plurality of sub-carriers so as to constitute a radio frame containing sub-channels assigned to each of the plurality sets of sub-carriers and for setting in the radio frame the user data and control data by means of orthogonal frequency division multiplexing; and a transmission part for transmitting a radio signal containing the radio frame; where, the channel assignment control part is constituted so that the radio frame is divided into 2 zones for the control and user data and all the sub-channels in the zone for control data are divided into groups for each of sectors; the control data is allocated on the corresponding divided groups; and the user data is allocated on all the sub-channels in the zone for user data.

摘要翻译： 本发明的目的是实现小区之间的干扰减少和最大吞吐量的提高，从而提高频谱效率。 通过OFDMA在其自身与多个移动台之间发送无线信号的无线基站包括：用于生成用户数据的多路复用部分; 信道分配控制部分，用于在多个子载波中选择多个子载波集合，以便构成包含分配给多个子载波中的每一个子载波的子信道的无线帧，并且在无线帧中进行设置 用户数据和控制数据通过正交频分复用; 以及发送部，用于发送包含无线帧的无线信号; 其中，信道分配控制部分被构成为使得无线电帧被划分为用于控制的用户数据和用户数据的两个区域，并且用于控制数据的区域中的所有子信道被划分成用于每个扇区的组; 控制数据分配在相应的分组上; 并且用户数据被分配在用户数据的区域中的所有子信道上。

公开(公告)号：EP4240069A1

公开(公告)日：2023-09-06

申请号：EP23184931.6

申请日：2019-08-15

申请人： NTT DOCOMO, INC.

发明人： Umeda, Hiromasa ,  Takahashi, Hideaki ,  Oguma, Yuta

IPC分类号： H04W52/36 ,  H04W52/42 ,  H04W52/14

摘要： A terminal (1), comprising a control section (12) that determines a maximum transmit power corresponding to an UplinkDutycycle in accordance with a certain rule when the UplinkDutycycle exceeds a maxUplinkDutycycle, wherein the certain rule is a step function in which the UplinkDutycycle exceeding the maxUplinkDutycycle is associated with the maximum transmit power; and a communication section (11) that performs an uplink transmission based on the maximum transmit power.

公开(公告)号：EP4125288A1

公开(公告)日：2023-02-01

申请号：EP22195816.8

申请日：2017-03-31

申请人： NTT DOCOMO, INC.

发明人： Takahashi, Hideaki ,  Takeda, Kazuaki ,  Sagae, Yuta ,  Nagata, Satoshi

IPC分类号： H04W24/08 ,  H04W48/12 ,  H04W36/00 ,  H04W48/20 ,  H04W76/27 ,  H04W76/40

摘要： There is provided user equipment of a radio communication system including a base station and the user equipment, the user equipment including a receiver that receives, from the base station, measurement band information indicating a frequency range in which received quality is measured in a system bandwidth; and a measurer that measures the received quality in the frequency range indicated by the measurement band information.

公开(公告)号：EP3737130A1

公开(公告)日：2020-11-11

申请号：EP20178494.9

申请日：2016-02-04

申请人： NTT DOCOMO, INC.

发明人： Takahashi, Hideaki ,  Umeda, Hiromasa

IPC分类号： H04W8/24 ,  H04W72/04 ,  H04W8/22

摘要： User equipment that comprises a transmission and reception unit configured to transmit and receive a radio signal to and from a base station; and a capability information indication unit configured to transmit capability information to the base station, wherein the capability information includes information indicative of carrier aggregation, CA, capable carrier combinations, bandwidths of the respective carriers, and frequency order of the carriers associated with each bandwidth in a case where the carrier combinations are within a same frequency band.

公开(公告)号：EP3697156A1

公开(公告)日：2020-08-19

申请号：EP20160387.5

申请日：2016-08-03

申请人： NTT DOCOMO, INC.

发明人： Takahashi, Hideaki ,  Umeda, Hiromasa ,  Hapsari, Wuri Andarmawanti ,  Uchino, Tooru

IPC分类号： H04W72/04 ,  H04W8/24 ,  H04W28/06

摘要： There is provided user equipment for communicating with a base station in a radio communication system supporting carrier aggregation, the user equipment including a generator that generates band combination information indicating one or more band combinations capable of being used for the carrier aggregation in the user equipment; and a transmitter that transmits the generated band combination information to the base station, wherein the generator generates the band combination information including highest band combination information indicating a highest band combination having a largest number of CCs to be combined, among the one or more band combinations capable of being used for the carrier aggregation in the user equipment.

公开(公告)号：EP3461205A1

公开(公告)日：2019-03-27

申请号：EP18206712.4

申请日：2016-02-17

申请人： NTT DOCOMO, INC.

发明人： Uchino, Tooru ,  Takeda, Kazuki ,  Takahashi, Hideaki

IPC分类号： H04W72/04 ,  H04L5/00

摘要： A user apparatus is provided. The user apparatus communicates with a base station in a mobile communication system. The mobile communication system supports carrier aggregation which includes multiple cells including a first cell and a second cell which uses a TTI different from a TTI of the first cell. The user apparatus includes a communication unit configured to transmit and receive a signal to and from the base station; and a timer control unit configured to, according to a type of a control operation performed by the communication unit, determine a TTI as a unit time for operating a timer used for the control operation. The communication unit performs the control operation by operating the timer by using as a unit time the TTI determined by the timer control unit.

公开(公告)号：EP3442270A1

公开(公告)日：2019-02-13

申请号：EP18190198.4

申请日：2013-09-24

申请人： NTT DOCOMO, INC.

发明人： Hapsari, Wuri Andarmawanti ,  Morioka, Yasufumi ,  Uchino, Tooru ,  Takahashi, Hideaki

IPC分类号： H04W36/02 ,  H04W16/32 ,  H04W36/04

摘要： A mobile communication method comprising the steps of: in a case where a mobile station is in communication in a macro cell managed by a first radio base station, and in a case where a second radio base station, which manages a small cell having a coverage including a location where the mobile station is present, is selected as a transmission path of user data of the mobile station, causing the first radio base station to start addition processing of adding the second radio base station to the transmission path of the user data of the mobile station; causing the second radio base station to reset header-compression related information, security setting information, and sequence-number management information in the addition processing; and causing the first radio base station to forward downlink user data destined for the mobile station to the second radio base station, in the addition processing, wherein the second radio base station has no Radio Resource Control, RRC, layer function.

公开(公告)号：EP3190849A1

公开(公告)日：2017-07-12

申请号：EP17157593.9

申请日：2013-03-18

申请人： NTT DOCOMO, INC.

发明人： Nagata, Satoshi ,  Takeda, Kazuaki ,  Takahashi, Hideaki ,  Kishiyama, Yoshihisa

IPC分类号： H04W72/04 ,  H04J11/00 ,  H04W28/18 ,  H04W88/08

CPC分类号： H04W72/042 ,  H04J11/0023 ,  H04W28/18 ,  H04W48/00 ,  H04W88/08

摘要： A base station apparatus for a radio communication system that comprises the base station apparatus configured in compliance with an LTE-Advanced system standard and a user terminal configured to to perform radio communication with the base station apparatus. The base station apparatus comprises a generating section that generates uplink reference signal information related to an uplink DM-RS (Demodulation-Reference Signal) and a notifying section that notifies the user terminal of the uplink reference signal information using an RRC Connection Reconfiguration signal. The uplink reference signal information comprises information about an amount of offset from a physical uplink control channel sequence.

摘要翻译： 一种无线通信系统的基站装置，其特征在于，具备依照LTE-Advanced系统标准而构成的基站装置和与该基站装置进行无线通信的用户终端。 基站装置包括生成与上行链路DM-RS（解调参考信号）有关的上行链路参考信号信息的生成部分和使用RRC连接重新配置信号将用户终端通知上行链路参考信号信息的通知部分。 上行链路参考信号信息包括关于来自物理上行链路控制信道序列的偏移量的信息。

公开(公告)号：EP3113534B1

公开(公告)日：2017-07-05

申请号：EP16185103.5

申请日：2013-01-30

申请人： NTT DOCOMO, INC.

发明人： Takahashi, Hideaki ,  Nagata, Satoshi

IPC分类号： H04W16/32 ,  H04W92/10 ,  H04W52/36 ,  H04W52/54 ,  H04L5/00 ,  H04W52/16 ,  H04W52/32 ,  H04W52/02 ,  H04W72/12

CPC分类号： H04W72/082 ,  H04L5/0044 ,  H04L5/0048 ,  H04L5/0073 ,  H04W52/0229 ,  H04W52/16 ,  H04W52/325 ,  H04W52/36 ,  H04W52/54 ,  H04W72/1289 ,  Y02D70/00 ,  Y02D70/1262 ,  Y02D70/1264

摘要： An objective of the present invention is to perform an appropriate demodulation process on a received signal in ABS. A mobile communication method according to the present invention includes the steps of: notifying a mobile station UE of an ABS "P_B" initial value by a radio base station eNB using an SIB2; notifying the mobile station UE of an ABS "P_A" initial value by the radio base station eNB using "RRCConnectionReconfiguration"; and performing a demodulation process on a downlink data signal in ABS by the mobile station UE on the basis of the ABS "P_B" initial value and the ABS "P_A" initial value.

摘要翻译： 本发明的目的是对ABS中的接收信号执行适当的解调处理。 根据本发明的移动通信方法包括以下步骤：由无线基站eNB使用SIB2向移动台UE通知ABS“P_B”初始值; 使用“RRCConnectionReconfiguration”，由无线基站eNB向移动台UE通知ABS“P_A”初始值; 以及基于ABS“P_B”初始值和ABS“P_A”初始值，由移动台UE对ABS中的下行链路数据信号执行解调处理。

公开(公告)号：EP3113534A1

公开(公告)日：2017-01-04

申请号：EP16185103.5

申请日：2013-01-30

申请人： NTT DOCOMO, INC.

发明人： Takahashi, Hideaki ,  Nagata, Satoshi

IPC分类号： H04W16/32 ,  H04W92/10 ,  H04W52/36 ,  H04W52/54 ,  H04L5/00 ,  H04W52/16 ,  H04W52/32 ,  H04W52/02 ,  H04W72/12

CPC分类号： H04W72/082 ,  H04L5/0044 ,  H04L5/0048 ,  H04L5/0073 ,  H04W52/0229 ,  H04W52/16 ,  H04W52/325 ,  H04W52/36 ,  H04W52/54 ,  H04W72/1289 ,  Y02D70/00 ,  Y02D70/1262 ,  Y02D70/1264

摘要： A mobile communication method which comprises the steps of notifying a mobile station of an initial value of a first offset value by a radio base station; notifying the mobile station of an initial value of a second offset value by the radio base station; and performing a demodulation process on a downlink data signal in ABS by the mobile station based on the initial value of the first offset value and the initial value of the second offset value, wherein the first offset value is a value representing a ratio between transmission power on a physical downlink shared channel in a period in which a cell-specific reference signal is transmitted in ABS, and transmission power on the physical downlink shared channel in a period in which no cell-specific reference signal is transmitted in ABS, and the second offset value is a value representing a ratio between the transmission power on the physical downlink shared channel in the period in which no cell-specific reference signal is transmitted in ABS and transmission power of the cell-specific reference signal.

摘要翻译： 一种移动通信方法，包括以下步骤：通过无线基站向移动台通知第一偏移值的初始值; 通过无线基站向移动台通知第二偏移值的初始值; 基于所述第一偏移值的初始值和所述第二偏移值的初始值，由所述移动台对ABS的下行链路数据信号进行解调处理，其中，所述第一偏移值是表示发送功率 在ABS中发送小区特定参考信号的时段中的物理下行链路共享信道以及在ABS中不发送小区特定参考信号的时段内的物理下行链路共享信道上的发送功率，第二 偏移值是表示在ABS中没有发送小区特定参考信号的时段内的物理下行链路共享信道的发送功率与小区特定基准信号的发送功率之间的比率的值。