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公开(公告)号：US20170142764A1
公开(公告)日：2017-05-18
申请号：US15309863
申请日：2015-04-08
Applicant: NTT DOCOMO, INC.
Inventor： Shimpei Yasukawa , Hiroki Harada , Satoshi Nagata , Qun Zhao
CPC classification number: H04W76/14 , H04W8/005 , H04W56/001 , H04W56/0025 , H04W72/1289 , H04W92/18
Abstract: A user equipment apparatus for performing user equipment-to-user equipment communication includes a synchronization signal detection unit configured to detect a user equipment-to-user equipment synchronization signal transmitted from a user equipment apparatus in another cell or another carrier; a control unit configured to set reception timing based on the user equipment-to-user equipment synchronization signal; and a reception unit configured to receive scheduling information or a discovery signal transmitted from the user equipment apparatus in the other cell or the other carrier within a time window defined based on the user equipment-to-user equipment synchronization signal.
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142.发明申请公开(公告)号：US20170142668A1
公开(公告)日：2017-05-18
申请号：US15323132
申请日：2015-05-27
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Hiroki Harada , Tooru Uchino , Satoshi Nagata
CPC classification number: H04W52/365 , H04W52/34 , H04W52/367 , H04W52/38 , H04W52/40 , H04W72/0446 , H04W76/15
Abstract: The present invention is designed so that user terminal operations are carried out adequately when guaranteed transmission power is configured in dual connectivity. A user terminal communicates with a plurality of cell groups, where each cell group is comprised of one or more cells that use different frequencies, and has a receiving section that receives the guaranteed transmission power value of each cell and active/non-active information of the cells in the cell groups, and a power control section that controls the guaranteed transmission power values of the cell groups by using the number of cells in the active state and the guaranteed transmission power value of each cell.
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公开(公告)号：US20170135039A1
公开(公告)日：2017-05-11
申请号：US15127520
申请日：2015-03-13
Applicant: NTT DOCOMO, INC.
Inventor： Kazuaki Takeda , Hiroki Harada , Hiroyuki Ishii
CPC classification number: H04W52/0225 , H04L5/0048 , H04W16/32 , H04W52/02 , H04W52/0206 , H04W72/042 , H04W72/0446 , H04W72/12 , H04W76/27 , Y02D70/00 , Y02D70/1262 , Y02D70/1264
Abstract: The present invention is designed to reduce the delay time which a small cell takes before starting transmitting data to a user terminal. A user terminal according to the present invention has a measurement section that, when the state of connection with the small base station is a deactivated state, periodically measures channel state information, by using a channel state information reference signal that is transmitted from the small base station, and a monitoring section that, when the state of connection is the deactivated state, periodically monitors a downlink control channel that is transmitted from the small base station, wherein, when downlink control information for the user terminal is detected by the periodic monitoring of the downlink control channel, the state of connection is switched from the deactivated state to an activated state.
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公开(公告)号：US20170118728A1
公开(公告)日：2017-04-27
申请号：US15127186
申请日：2015-03-13
Applicant: NTT DOCOMO, INC.
Inventor： Hiroki Harada , Kazuki Takeda , Tooru Uchino , Satoshi Nagata
CPC classification number: H04W52/38 , H04W16/14 , H04W72/0413 , H04W72/0453 , H04W72/0473 , H04W72/14
Abstract: The present invention is designed to apply UL transmission control adequately in a radio communication system which runs LTE in an unlicensed band (LTE-U). A user terminal communicates with a radio base station by using a licensed band and an unlicensed band, and has a detection section that detects a signal transmitted from another transmission point in the unlicensed band, a control section that controls transmission of a UL signal in the unlicensed band based on a UL transmission command transmitted from the radio base station and the detection result in the detection section, and a transmission section that transmits the UL signal, and the transmission section transmits information related to the detection result to the radio base station by using the licensed band.
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公开(公告)号：US20170111922A1
公开(公告)日：2017-04-20
申请号：US15127978
申请日：2016-01-28
Applicant: NTT DOCOMO, INC.
Inventor： Tooru Uchino , Kazuki Takeda , Hiroki Harada
IPC: H04W72/12
CPC classification number: H04W72/1257 , H04W16/14 , H04W48/16 , H04W72/0453 , H04W72/1263 , H04W72/1273 , H04W74/0808
Abstract: Techniques are disclosed for implementing LBT in coordinated communication for inter-cell interference control. One aspect of the present invention relates to a base station, including a communication control unit configured to schedule radio resources of a cell for user equipment and a frequency usage detection unit configured to perform Listen Before Talk (LBT) in a limited partial frequency band corresponding to the scheduled radio resources in a whole frequency band of the cell, wherein if it is determined that the partial frequency band is not used, the communication control unit performs downlink transmission to the user equipment.
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Patent Agency Ranking
公开(公告)号：US20170013646A1
公开(公告)日：2017-01-12
申请号：US15121173
申请日：2016-01-28
Applicant: NTT DOCOMO, INC.
Inventor： Tooru Uchino , Kazuki Takeda , Hiroki Harada
CPC classification number: H04W74/0816 , H04W16/14 , H04W74/02
Abstract: Techniques are disclosed for implementing the LBT in consideration of propagation delay differences in a cell. One aspect of the present invention relates to user equipment, comprising: a transmission and reception unit configured to use a scheduled radio resource to perform transmission and reception to/from a base station via a cell; and a frequency usage detection unit configured to perform Listen Before Talk (LBT) on a frequency band in the cell at an LBT timing independent of a scheduled uplink transmission timing, wherein when the frequency usage detection unit determines that no other user equipment is communicating in the frequency band, the transmission and reception unit performs uplink transmission to the base station.
Abstract translation: 公开了考虑到单元中的传播延迟差异来实现LBT的技术。 本发明的一个方面涉及用户设备，包括：发送和接收单元，被配置为使用调度的无线电资源经由小区向/从基站发送和接收; 以及频率使用检测单元，被配置为在与所调度的上行链路发送定时无关的LBT定时在所述小区的频带上进行听即播（LBT），其中，当所述频率使用检测单元确定没有其他用户设备正在通信时 频带，发送和接收单元执行向基站的上行链路传输。
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147.发明申请MOBILE STATION, BASE STATION, UPLINK SIGNAL TRANSMISSION METHOD, AND UPLINK SIGNAL RECEPTION METHOD 审中-公开移动站，基站，上行信号传输方法和上行信号接收方法公开(公告)号：US20160337867A1
公开(公告)日：2016-11-17
申请号：US15110895
申请日：2015-03-09
Applicant: NTT DOCOMO, INC.
Inventor： Tooru Uchino , Kazuki Takeda , Yuichi Kakishima , Hiroki Harada
CPC classification number: H04W16/14 , H04L1/1896 , H04W52/146 , H04W52/248 , H04W72/0413 , H04W72/0453 , H04W74/0808
Abstract: A mobile station which communicates with a base station using an unlicensed band includes a resource management unit configured to manage information about an uplink transmission resource allocated by the base station; a transmission detection unit configured to detect whether transmission in the unlicensed band is possible before arrival of the allocated uplink transmission resource; and a transmission unit configured to transmit an uplink signal on the allocated uplink transmission resource, when transmission in the unlicensed band is possible.
Abstract translation: 使用非许可频带与基站进行通信的移动台包括资源管理单元，被配置为管理由所述基站分配的上行链路传输资源的信息; 发送检测单元，被配置为检测在所分配的上行链路传输资源到达之前是否可能在非许可频带中的传输; 以及发送单元，被配置为当所述非许可频带中的发送是可能时，在所分配的上行链路传输资源上发送上行链路信号。
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公开(公告)号：US20160294595A1
公开(公告)日：2016-10-06
申请号：US15032343
申请日：2014-10-16
Applicant: NTT DOCOMO, INC.
Inventor： Hiroki Harada , Yongbo Zeng , Qun Zhao , Yongsheng Zhang
CPC classification number: H04L27/2607 , H04L27/2646 , H04W8/005 , H04W72/0446
Abstract: The present invention is designed so that, in a radio communication system in which inter-terminal communication is carried out, the impact of inter-symbol interference due to the delay of inter-terminal discovery signals is reduced. The radio communication method of the present invention is used in a radio communication system in which each user terminal transmits the inter-terminal discovery signal in a transmission duration of a predetermined period. A radio base station determines the cyclic prefix (CP) length configuration for use in the transmission duration, and transmits cyclic prefix (CP) length configuration information which represents the CP length configuration. Each user terminal transmits the inter-terminal discovery signal based on the CP length configuration information.
Abstract translation: 本发明的目的在于，在进行终端间通信的无线通信系统中，减少了由于终端间发现信号的延迟引起的符号间干扰的影响。 本发明的无线通信方法用于各个用户终端在规定期间的发送持续时间内发送终端间发现信号的无线通信系统。 无线基站确定在传输持续时间内使用的循环前缀（CP）长度配置，并发送表示CP长度配置的循环前缀（CP）长度配置信息。 每个用户终端根据CP长度配置信息发送终端间发现信号。
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公开(公告)号：US20160255569A1
公开(公告)日：2016-09-01
申请号：US15032692
申请日：2014-10-22
Applicant: NTT DOCOMO, INC.
Inventor： Hiroki Harada , Kazuki Takeda , Satoshi Nagata
CPC classification number: H04W48/08 , H04W8/005 , H04W72/042 , H04W72/0426 , H04W72/044 , H04W92/18
Abstract: The present invention is designed so that adequate mutual detection is made possible in non-collision-type D2D discovery during inter-terminal direct communication. A user terminal can execute inter-terminal direct communication, and has a receiving section that receives initial allocation location information of a resource for transmitting a discovery signal for use in inter-terminal direct communication, and a control section that switches the location of the resource to transmit the discovery signal, per period, in accordance with a pre-rule.
Abstract translation: 本发明被设计成使得在终端间直接通信期间的非冲突型D2D发现中可以进行适当的相互检测。 用户终端可以执行终端间直接通信，并具有接收部分，其接收用于发送用于终端间直接通信的发现信号的资源的初始分配位置信息，以及切换资源的位置的控制部分 根据预先规定来发送每个周期的发现信号。
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公开(公告)号：US20160192334A1
公开(公告)日：2016-06-30
申请号：US14910318
申请日：2014-07-18
Applicant: NTT DOCOMO, INC.
Inventor： Kazuaki Takeda , Hiroki Harada , Hiroyuki Ishii
IPC: H04W72/04 , H04B17/318 , H04W16/32
CPC classification number: H04W72/042 , H04B17/318 , H04W16/32 , H04W48/16 , H04W52/0206 , H04W72/0413 , H04W84/045 , Y02D70/00 , Y02D70/1242 , Y02D70/1262 , Y02D70/1264 , Y02D70/25
Abstract: The present invention is designed to adequately control small cells (small base stations) on/off in a structure where small cells and macro cells are arranged to overlap each other. A user terminal can communicate with a macro base station that forms a macro cell and a small base station that forms a small cell arranged within the macro cell, and has a measurement section that measures the received power of a detection/measurement signal that is transmitted from the small base station in a predetermined subframe, and the total received power of downlink signals in a subframe in which no detection/measurement signal is transmitted, a calculation section that calculates received quality by using the received power and the total received power, and a transmission section that transmits information related to the received quality to the macro base station, the calculation section calculates the received quality based on the proportion of the received power and the value given by adding the received power to the total received power.
Abstract translation: 本发明被设计为在小单元和宏单元被布置为彼此重叠的结构中适当地控制开/关的小单元（小型基站）。 用户终端可以与形成宏小区的宏基站和形成布置在宏小区内的小小区的小型基站进行通信，并且具有测量部，其测量发送的检测/测量信号的接收功率 在预定子帧中的小型基站和未发送检测/测量信号的子帧中的下行链路信号的总接收功率，通过使用接收功率和总接收功率来计算接收质量的计算部，以及 发送部，其向所述宏基站发送与所接收的质量有关的信息，所述计算部基于所述接收功率的比例和通过将所述接收功率与所述接收功率相加而给出的值来计算接收质量。
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