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1. 发明授权

US10397792B2 Channel assignment apparatus, wireless communication system, and channel assignment method 有权
公开(公告)号：US10397792B2
公开(公告)日：2019-08-27
申请号：US15790778
申请日：2017-10-23
申请人： FUJITSU LIMITED
发明人： Takayoshi Nakayama , Kazuyuki Ozaki , Hiroshi Fujita
IPC分类号： H04L25/02 , H04W16/10 , H04W24/02 , H04W24/10 , H04W72/04 , H04W72/08 , H04W84/12 , H04W88/08
摘要： A channel assignment apparatus includes an interfered amount processing unit that represents a value group by a symmetric matrix, the value group including, as an element, an amount of interference that occurs in each of wireless access points, performs a row exchange and a column exchange in the symmetric matrix based on magnitude of the amount of interference, and generates one of the upper triangular matrix and the lower triangular matrix from the symmetric matrix in which the row exchange and the column exchange are performed, an assigning unit that assigns a frequency channel to each of the wireless access points by using one of the upper triangular matrix and the lower triangular matrix in accordance with a predetermined algorithm for selecting an optimal assignment candidate corresponding to the magnitude of the amount of interference from among a plurality of assignment candidates for the frequency channel.

2. 发明授权

US10008773B2 Wireless communication apparatus, antenna directionality control method, and power supply circuit 有权
公开(公告)号：US10008773B2
公开(公告)日：2018-06-26
申请号：US15597101
申请日：2017-05-16
申请人： FUJITSU LIMITED
发明人： Kenichi Nishikawa , Kazuyuki Ozaki , Masahiko Shimizu
IPC分类号： H01Q3/38 , H01Q1/24 , H04W16/28 , H04W52/02 , H04W88/08
CPC分类号： H01Q3/38 , H01Q1/246 , H01Q25/00 , H04W16/28 , H04W52/0206 , H04W88/085 , Y02D70/00 , Y02D70/21
摘要： A wireless communication apparatus includes a plurality of phase adjusters configured to adjust the phase of a digital baseband signal d(k) for k=1, 2, . . . , K (K is a natural number equal to or larger than one) and output a plurality of digital signals d1(k), d2(k), dm(k) (m is a natural number equal to or larger than two) having phases different from each other, an i-th converter configured to convert a signal obtained by synthesizing the digital signals di(1), di(2), . . . , di(K) into an analog signal ai for i=1, 2, . . . , m, and a power supply circuit including a first stage circuit, a second stage circuit, . . . , an N-th stage circuit (N is a natural number equal to or larger than one).

3. 发明授权

US09332481B2 Wireless communication system, wireless communication method, transmitting terminal, and receiving terminal 有权
标题翻译：无线通信系统，无线通信方式，发送终端和接收终端
公开(公告)号：US09332481B2
公开(公告)日：2016-05-03
申请号：US14017997
申请日：2013-09-04
申请人： FUJITSU LIMITED
发明人： Yun Wen , Kazuyuki Ozaki , Hiroshi Fujita
IPC分类号： H04W4/00 , H04W40/12 , H04W84/18 , H04W88/04 , H04W74/08
CPC分类号： H04W40/12 , H04W74/0808 , H04W84/18 , H04W88/04 , Y02D70/142 , Y02D70/22 , Y02D70/34
摘要： A wireless communication system constitutes a wireless ad hoc network. A plurality of wireless terminals include a receiving terminal and a plurality of the transmitting terminals. Each of the transmitting terminals executes direct communication or indirect communication. The wireless communication system includes a first obtainer that obtains a reception side terminal number which is the number of the wireless terminals with which the receiving terminal is able to communicate directly, a second obtainer that obtains a transmission side terminal number which is the number of the wireless terminals with which a target transmitting terminal, which is one of the plurality of transmitting terminals, is able to communicate directly, and a setter that selects one of the direct communication and the indirect communication based on the reception side terminal number and the transmission side terminal number, and sets the target transmitting terminal so as to execute the selected communication.
摘要翻译：无线通信系统构成无线自组织网络。多个无线终端包括接收终端和多个发送终端。每个发送终端执行直接通信或间接通信。无线通信系统包括：第一获取器，其获得作为接收终端能够直接通信的无线终端的号码的接收侧终端号码;第二获取器，其获得发送侧终端号码，作为多个发送终端之一的目标发送终端能够直接通信的无线终端，以及基于接收侧终端号码和发送侧选择直接通信和间接通信中的一个的设定器终端号码，并设置目标发送终端，以执行所选择的通信。

4. 发明申请

US20130201970A1 WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION CONTROL METHOD, AND WIRELESS COMMUNICATION DEVICE 审中-公开
标题翻译：无线通信系统，无线通信控制方法和无线通信设备
公开(公告)号：US20130201970A1
公开(公告)日：2013-08-08
申请号：US13665150
申请日：2012-10-31
申请人： FUJITSU LIMITED
发明人： Hiroshi FUJITA , Yun Wen , Kazuyuki Ozaki
IPC分类号： H04W72/04
CPC分类号： H04W72/0446
摘要： Each node transmits to a destination node a registration packet indicating that a local node is a node to request packet transmission. Each node transmits a packet to the destination node within a transmission time reported from the destination node. The destination node receives a registration packet from each node, and calculates a traffic amount to occur in each path for every path going through an adjacent node that enables direct communication with the destination node. The destination node assigns a transmission time to transmit the packet to the each path based on the calculated traffic amount of each path and reports the assigned transmission time to each node.
摘要翻译：每个节点向目的地节点发送指示本地节点是请求分组传输的节点的注册分组。每个节点在从目的地节点报告的传输时间内向目的地节点发送分组。目的地节点从每个节点接收注册分组，并且计算出每个路径中出现的每个路径通过相邻节点的能够与目的地节点直接通信的流量。目的地节点根据所计算的每个路径的业务量，分配传输时间以将路由数据发送到每条路径，并向每个节点报告分配的传输时间。

5. 发明授权

US10009895B2 Beamforming for selecting a transmitting direction based on feedback from a reception device 有权
公开(公告)号：US10009895B2
公开(公告)日：2018-06-26
申请号：US15370068
申请日：2016-12-06
申请人： FUJITSU LIMITED
发明人： Kenichi Nishikawa , Kazuyuki Ozaki , Masahiko Shimizu
IPC分类号： H04W72/04 , H04B7/06 , H04L12/26 , H04B17/318
CPC分类号： H04W72/0453 , H04B7/0617 , H04B7/0619 , H04B7/0695 , H04B17/318 , H04L43/16 , H04W72/046 , H04W72/085
摘要： A transmission method executed by a transmission device, the transmission method including performing a plurality of transmitting processes in accordance with a plurality of transmitting patterns, each of the plurality of transmitting processes including transmitting a plurality of signals for a plurality of directions in parallel by forming a plurality of beams corresponding to the plurality of directions, each of the plurality of transmitting patterns being defined a combination of directions to be transmitted in parallel, receiving a result of a determining from a reception device, the determining including determining whether or not, for each of a plurality of receiving processes, the at least one signal satisfies a predetermined condition, each of the plurality of receiving processes including receiving at least one signal transmitted from the transmission device, and selecting a transmitting direction for the reception device from the plurality of directions based on a result of the determining.

6. 发明申请

US20180167127A1 COMMUNICATION CONTROL DEVICE AND PHASE ADJUSTING METHOD 审中-公开
公开(公告)号：US20180167127A1
公开(公告)日：2018-06-14
申请号：US15794350
申请日：2017-10-26
申请人： FUJITSU LIMITED
发明人： Kazuyuki Ozaki , Shunsuke FUJIO
IPC分类号： H04B7/06 , H04W16/28
CPC分类号： H04B7/0691 , H01Q3/36 , H01Q21/0025 , H04B7/06 , H04B7/0617 , H04B7/10 , H04W16/28 , H04W72/046
摘要： A communication control device includes: a beam forming unit that forms a beam by controlling a phase of a transmission signal that is transmitted through each of a plurality of antennas; a phase adjusting unit that applies phase rotation to the transmission signal to compensate for a phase shift at each frequency of the transmission signal, whose phase is controlled by the beam forming unit, the phase shift corresponding to a signal bandwidth of the transmission signal; and a control unit that controls the phase rotation that is applied to the transmission signal by the phase adjusting unit.

7. 发明授权

US09704090B2 Package structure 有权
公开(公告)号：US09704090B2
公开(公告)日：2017-07-11
申请号：US14813161
申请日：2015-07-30
申请人： FUJITSU LIMITED
发明人： Hiroyasu Kawano , Kazuyuki Ozaki
IPC分类号： G06K19/077 , H01L23/373 , G06K19/07 , G06K19/02 , H01L23/29 , H01L23/31 , H01L23/34
CPC分类号： G06K19/0773 , G06K19/02 , G06K19/0716 , G06K19/07775 , H01L23/293 , H01L23/3107 , H01L23/34 , H01L23/3735 , H01L2924/0002 , H01L2924/00
摘要： A package structure includes a first member that surrounds a semiconductor device, a heat insulating material that surrounds an outer side of the first member, and a second member that surrounds an outer side of the head insulating material. The heat insulating material has a density and a thermal conductivity lower than those of the first and second members. The first member has a heat capacity larger than that of the second member.

8. 发明申请

US20170150492A1 WIRELESS COMMUNICATION SYSTEM, ACCESS POINT, AND WIRELESS DEVICE 审中-公开
公开(公告)号：US20170150492A1
公开(公告)日：2017-05-25
申请号：US15426783
申请日：2017-02-07
申请人： FUJITSU LIMITED
发明人： Kazuyuki Ozaki
IPC分类号： H04W72/04 , H04L5/00 , H04W72/08 , H04L5/16
CPC分类号： H04W72/048 , H04L5/0037 , H04L5/0044 , H04L5/0055 , H04L5/0062 , H04L5/0078 , H04L5/16 , H04W72/0446 , H04W72/082 , H04W76/12 , H04W84/12
摘要： An access point transmits, in response to a reception of a first signal transmitted from a first wireless device, a second signal addressed to a second wireless device located outside a wireless communication area of the first wireless device.

9. 发明申请

US20160255655A1 WIRELESS COMMUNICATION APPARATUS, WIRELESS COMMUNICATION SYSTEM, AND CHANNEL ESTIMATING METHOD 有权
标题翻译：无线通信设备，无线通信系统和信道估计方法
公开(公告)号：US20160255655A1
公开(公告)日：2016-09-01
申请号：US14993227
申请日：2016-01-12
申请人： FUJITSU LIMITED
发明人： Kenichi NISHIKAWA , Kazuyuki Ozaki , Kaoru Yokoo , Hiroshi Fujita , HIROO URABE
IPC分类号： H04W74/08 , H04W4/00
CPC分类号： H04W4/005 , H04B7/086 , H04L1/0027 , H04L5/00 , H04W4/70 , H04W52/0216 , H04W52/0219 , Y02D70/142 , Y02D70/144 , Y02D70/444
摘要： A wireless communication apparatus includes antenna elements, each receiving a first signal and a second signal, a first estimator that estimates first channel information of the first signal, a false signal generator that generates false signals that are equal in number to or greater in number than the number of the antenna elements, each of the false signals arriving from a unique direction that is different from a direction of arrival of the first signal, a weight generator that generates first weights, each being associated with a corresponding one of the false signals and forming a null in the direction of arrival of the first signal, a multiplier that multiplies a signals received by the respective antenna elements by the first weights to acquire weight-multiplied signals, and a second estimator that estimates second channel information of the second signal using the weight-multiplied signals.
摘要翻译：无线通信装置包括各自接收第一信号和第二信号的天线元件，估计第一信号的第一信道信息的第一估计器，产生数量以上数量以上的误信号的伪信号，所述天线元件的数量，每个所述伪信号从与所述第一信号的到达方向不同的唯一方向到达，所述权重发生器产生第一权重，每个权重发生器与所述假信号中的相应一个相关联，在第一信号的到达方向上形成零点;乘法器，将由各个天线元件接收的信号乘以第一权重，以获取加权相乘信号;以及第二估计器，其使用第二估计器估计第二信号的第二信道信息加权信号。

10. 发明申请

US20150332140A1 PACKAGE STRUCTURE 有权
标题翻译：包装结构
公开(公告)号：US20150332140A1
公开(公告)日：2015-11-19
申请号：US14813161
申请日：2015-07-30
申请人： FUJITSU LIMITED
发明人： Hiroyasu KAWANO , Kazuyuki Ozaki
IPC分类号： G06K19/077 , G06K19/07 , H01L23/373
CPC分类号： G06K19/0773 , G06K19/02 , G06K19/0716 , G06K19/07775 , H01L23/293 , H01L23/3107 , H01L23/34 , H01L23/3735 , H01L2924/0002 , H01L2924/00
摘要： A package structure includes a first member that surrounds a semiconductor device, a heat insulating material that surrounds an outer side of the first member, and a second member that surrounds an outer side of the head insulating material. The heat insulating material has a density and a thermal conductivity lower than those of the first and second members. The first member has a heat capacity larger than that of the second member.
摘要翻译：封装结构包括围绕半导体器件的第一构件，围绕第一构件的外侧的绝热材料和围绕头绝缘材料的外侧的第二构件。绝热材料的密度和导热率低于第一和第二构件的密度和热导率。第一构件的热容量大于第二构件的热容量。

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