公开(公告)号：EP2493236A1

公开(公告)日：2012-08-29

申请号：EP12153246.9

申请日：2012-01-31

申请人： NTT DoCoMo, Inc.

发明人： Fuji, Hiromasa ,  Yasuda, Hiroto ,  Harada, Hiroki ,  Miura, Shunji ,  Kayama, Hidetoshi

IPC分类号： H04W16/14 ,  H04W74/00 ,  H04W74/08

CPC分类号： H04W16/14 ,  H04B1/005 ,  H04B1/1027 ,  H04W28/04 ,  H04W56/00 ,  H04W72/082 ,  H04W74/0833 ,  H04W88/08

摘要： A CRS base station (21) includes a transmitting section configured to transmit a synchronization establishment signal, a receiving section configured to receive a random access signal corresponding to the synchronization establishment signal, a determining section configured to determine whether or not the random access signal received by the receiving section has been transmitted from an MCS terminal (12) and an interference reduction processing section configured to perform interference reduction processing on the MCS terminal (12) when the determining section determines that the random access signal has been transmitted from the MCS terminal (12).

摘要翻译： CRS基站（21）包括：发送部，被配置为发送同步建立信号;接收部，被配置为接收与所述同步建立信号对应的随机接入信号;判定部，被配置为判定接收到的随机接入信号 接收部分已经从MCS终端（12）和干扰减少处理部分发送，该干扰减少处理部分被配置为当MCS终端（12）确定已经从MCS终端发送了随机接入信号时对MCS终端（12）执行干扰减少处理 （12）。

公开(公告)号：EP1860798A3

公开(公告)日：2007-12-05

申请号：EP07016634.3

申请日：2003-06-06

申请人： NTT DoCoMo, Inc.

发明人： Chen, Lan ,  Kitazawa, Daisuke ,  Kayama, Hidetoshi ,  Umeda, Narumi

IPC分类号： H04B7/26 ,  H04L12/56 ,  H04Q7/38 ,  H04B7/005

CPC分类号： H04W52/22 ,  H04W16/14 ,  H04W52/221 ,  H04W52/223 ,  H04W52/225 ,  H04W52/226 ,  H04W52/228 ,  H04W52/24 ,  H04W52/243 ,  H04W52/265 ,  H04W52/286 ,  H04W52/367

摘要： The present invention improves a system capacity and satisfaction rate with a quality of service in packet communications performed through a radio link established between a transmitting station (BS2) and a receiving station (MS2) by dynamically limiting transmission power of packets in the transmitting station and keeping an increase of an interference level in the receiving station, which belongs to another cell, within a TPC margin. The present invention includes a resource allocator configured to set transmission power of packets in a next step period, by use of transmission power of packets in a preceding step period (slot) and an interference level of the receiving station (MS2).

公开(公告)号：EP1860798A2

公开(公告)日：2007-11-28

申请号：EP07016634.3

申请日：2003-06-06

申请人： NTT DoCoMo, Inc.

发明人： Chen, Lan ,  Kitazawa, Daisuke ,  Kayama, Hidetoshi ,  Umeda, Narumi

IPC分类号： H04B7/26 ,  H04L12/56 ,  H04Q7/38

CPC分类号： H04W52/22 ,  H04W16/14 ,  H04W52/221 ,  H04W52/223 ,  H04W52/225 ,  H04W52/226 ,  H04W52/228 ,  H04W52/24 ,  H04W52/243 ,  H04W52/265 ,  H04W52/286 ,  H04W52/367

摘要： The present invention improves a system capacity and satisfaction rate with a quality of service in packet communications performed through a radio link established between a transmitting station (BS2) and a receiving station (MS2) by dynamically limiting transmission power of packets in the transmitting station and keeping an increase of an interference level in the receiving station, which belongs to another cell, within a TPC margin. The present invention includes a resource allocator configured to set transmission power of packets in a next step period, by use of transmission power of packets in a preceding step period (slot) and an interference level of the receiving station (MS2).

摘要翻译： 本发明通过动态地限制发送站中的分组的发送功率，通过在发送站（BS2）和接收站（MS2）之间建立的无线电链路执行的分组通信中的服务质量提高了系统容量和满意率，以及 在属于另一个小区的接收站内，在TPC范围内保持增加干扰电平。 本发明包括：资源分配器，被配置为通过使用前一步骤周期（时隙）中的分组的发送功率和接收站（MS2）的干扰电平，来设置下一个步骤中的分组的发送功率。

公开(公告)号：EP2933967B1

公开(公告)日：2018-12-05

申请号：EP15163175.1

申请日：2015-04-10

申请人： NTT DoCoMo, Inc.

发明人： Na, Chongning ,  Hou, Xiaolin ,  Harada, Atsushi ,  Kayama, Hidetoshi

IPC分类号： H04L25/03 ,  H04B7/06 ,  H04B7/04 ,  H04W72/08 ,  H04W92/20 ,  H04W28/06 ,  H04W24/10 ,  H04J11/00 ,  H04B7/0456 ,  H04B7/024 ,  H04W28/16

CPC分类号： H04J11/0053 ,  H04B7/024 ,  H04B7/0456 ,  H04B7/0482 ,  H04B7/0626 ,  H04B7/0634 ,  H04L25/03904 ,  H04L25/0391 ,  H04W24/10 ,  H04W28/06 ,  H04W28/16 ,  H04W92/20

摘要： The present disclosure provides a base station, a communication system and a method thereof. The communication system includes three base stations adjacent to each other, and each base station serves at least one UE. The method includes: acquiring, by each base station, a channel matrix of a channel from the base station to an adjacent base station; calculating an interference alignment-based transmission precoding matrix for each base station based on the channel matrices of the channels between the base stations; and precoding, by each base station, data to be transmitted with the interference alignment-based transmission precoding matrix. According to the present disclosure, by using an interference alignment-based technique with a high spectral efficiency, it is able to provide a balance between the interference cancellation and the spectral efficiency in a better manner.

公开(公告)号：EP2237442B1

公开(公告)日：2014-04-02

申请号：EP10156677.6

申请日：2010-03-16

申请人： NTT DoCoMo, Inc.

发明人： Hou, Xiaolin ,  Zhang, Zhan ,  Kayama, Hidetoshi

IPC分类号： H04B7/02 ,  H04B7/06

CPC分类号： H04B7/024 ,  H04B7/063

公开(公告)号：EP2088820A3

公开(公告)日：2009-09-30

申请号：EP09006190.4

申请日：2006-10-17

申请人： NTT DoCoMo, Inc.

发明人： Du, Lei ,  Bai, Yong ,  Chen, Lan ,  Kayama, Hidetoshi

IPC分类号： H04W52/04 ,  H04W48/12

CPC分类号： H04W48/14 ,  H04W48/12 ,  H04W48/16 ,  H04W84/042 ,  H04W84/12 ,  H04W88/04 ,  H04W88/06 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/22

摘要： A method for accessing a hybrid network including a wireless wide area network and a wireless distributed network comprises regularly transmitting by a bare station of the wireless wide area network a synchronization signaling for synchronizing with a downlink common control channel, on a transmission frequency band of the wireless distributed network; transmitting by a wireless terminal a relay request signal requesting to relay a data packet to be transmitted, after receiving the synchronization signaling; starting by a gateway apparatus to access the wireless distributed network to receive the relay request signal from the wireless terminal st a time instant corresponding to the synchronization signaling sensed on the downlink common control channel; and establishing by the gateway apparatus a connection with the wireless terminal in the distributed network environment.

公开(公告)号：EP1365549B1

公开(公告)日：2009-09-09

申请号：EP03011657.8

申请日：2003-05-22

申请人： NTT DoCoMo, Inc.

发明人： Kayama, Hidetoshi ,  Chen, Lan ,  Kitazawa, Daisuke ,  Umeda, Narumi

IPC分类号： H04L12/56 ,  H04B1/707 ,  H04L1/00

CPC分类号： H04W52/04 ,  H04B1/707 ,  H04L1/0002 ,  H04W74/08

公开(公告)号：EP2493236B1

公开(公告)日：2017-07-19

申请号：EP12153246.9

申请日：2012-01-31

申请人： NTT DoCoMo, Inc.

发明人： Fuji, Hiromasa ,  Yasuda, Hiroto ,  Harada, Hiroki ,  Miura, Shunji ,  Kayama, Hidetoshi

IPC分类号： H04W16/14 ,  H04W74/00 ,  H04W74/08

CPC分类号： H04W16/14 ,  H04B1/005 ,  H04B1/1027 ,  H04W28/04 ,  H04W56/00 ,  H04W72/082 ,  H04W74/0833 ,  H04W88/08

摘要： A CRS base station (21) includes a transmitting section configured to transmit a synchronization establishment signal, a receiving section configured to receive a random access signal corresponding to the synchronization establishment signal, a determining section configured to determine whether or not the random access signal received by the receiving section has been transmitted from an MCS terminal (12) and an interference reduction processing section configured to perform interference reduction processing on the MCS terminal (12) when the determining section determines that the random access signal has been transmitted from the MCS terminal (12).

摘要翻译： CRS基站（21）包括：发送部分，配置为发送同步建立信号;接收部分，配置为接收与所述同步建立信号对应的随机接入信号;确定部分，配置为确定是否接收到所述随机接入信号 当所述确定部分确定已从所述MCS终端（12）发送了所述随机接入信号时，已从所述MCS终端（12）发送所述接收部分，并且所述干扰降低处理部分被配置为对所述MCS终端（12）执行干扰降低处理 （12）。

公开(公告)号：EP2723131A3

公开(公告)日：2014-12-17

申请号：EP13189101.2

申请日：2013-10-17

申请人： NTT DoCoMo, Inc.

发明人： Mu, Qin ,  Liu, Liu ,  Chen, Lan ,  Kayama, Hidetoshi ,  Takeda, Kazuaki

IPC分类号： H04W72/00 ,  H04W72/04

CPC分类号： H04W72/042 ,  H04L5/14 ,  H04W72/0446 ,  H04W88/04 ,  H04W88/08

摘要： The present application provides an information transmission method, an information transmission apparatus, and a base station. The information transmission method comprises: an allocation step of, according to a search space allocation mode, performing search space allocation in a target resource consisting of at least two resource subsets and allocating, for the first user, a first search space capable of transmitting the first user control information, the search space allocation mode being associated with the at least two resource subsets; and a first transmission step of transmitting the first user control information via the first search space so that the first user can acquire the first user control information from the first search space according to the search space allocation mode. According to the present invention, the resource utilization efficiency will be improved.

公开(公告)号：EP2723131A2

公开(公告)日：2014-04-23

申请号：EP13189101.2

申请日：2013-10-17

申请人： NTT DoCoMo, Inc.

发明人： Mu, Qin ,  Liu, Liu ,  Chen, Lan ,  Kayama, Hidetoshi ,  Takeda, Kazuaki

IPC分类号： H04W72/00 ,  H04W72/04

CPC分类号： H04W72/042 ,  H04L5/14 ,  H04W72/0446 ,  H04W88/04 ,  H04W88/08

摘要： The present application provides an information transmission method, an information transmission apparatus, and a base station. The information transmission method comprises: an allocation step of, according to a search space allocation mode, performing search space allocation in a target resource consisting of at least two resource subsets and allocating, for the first user, a first search space capable of transmitting the first user control information, the search space allocation mode being associated with the at least two resource subsets; and a first transmission step of transmitting the first user control information via the first search space so that the first user can acquire the first user control information from the first search space according to the search space allocation mode. According to the present invention, the resource utilization efficiency will be improved.