公开(公告)号：US20100014463A1

公开(公告)日：2010-01-21

申请号：US12518162

申请日：2007-12-05

申请人： Yukimasa Nagai ,  Takahisa Yamauchi ,  Tetsuya Kosaka

发明人： Yukimasa Nagai ,  Takahisa Yamauchi ,  Tetsuya Kosaka

IPC分类号： H04W40/00

CPC分类号： H04B7/0695 ,  H04B7/0617 ,  H04B7/0619 ,  H04W8/005 ,  H04W28/065 ,  H04W72/0426 ,  H04W72/046 ,  H04W76/14

摘要： A first wireless terminal station transmits beam transmission direction identification information in all directions. A second wireless terminal station receives the transmission direction identification information, combines reception direction identification information and the transmission direction identification information, and transmits directivity direction combination information to a wireless base station. The first and the second wireless terminal stations form directional beams in directions indicated by the directivity direction combination information to thereby perform a direct communication.

摘要翻译： 第一无线终端站向所有方向发送波束传输方向识别信息。 第二无线终端站接收发送方向识别信息，组合接收方向识别信息和发送方向识别信息，并向无线基站发送方向性组合信息。 第一和第二无线终端站在由方向性组合信息指示的方向上形成定向波束，从而进行直接通信。

公开(公告)号：US08238835B2

公开(公告)日：2012-08-07

申请号：US12518162

申请日：2007-12-05

申请人： Yukimasa Nagai ,  Takahisa Yamauchi ,  Tetsuya Kosaka

发明人： Yukimasa Nagai ,  Takahisa Yamauchi ,  Tetsuya Kosaka

IPC分类号： H04B17/00

CPC分类号： H04B7/0695 ,  H04B7/0617 ,  H04B7/0619 ,  H04W8/005 ,  H04W28/065 ,  H04W72/0426 ,  H04W72/046 ,  H04W76/14

摘要： A first wireless terminal station transmits beam transmission direction identification information in all directions. A second wireless terminal station receives the transmission direction identification information, combines reception direction identification information and the transmission direction identification information, and transmits directivity direction combination information to a wireless base station. The first and the second wireless terminal stations form directional beams in directions indicated by the directivity direction combination information to thereby perform a direct communication.

摘要翻译： 第一无线终端站向所有方向发送波束传输方向识别信息。 第二无线终端站接收发送方向识别信息，组合接收方向识别信息和发送方向识别信息，并向无线基站发送方向性组合信息。 第一和第二无线终端站在由方向性组合信息指示的方向上形成定向波束，从而进行直接通信。

公开(公告)号：US08325701B2

公开(公告)日：2012-12-04

申请号：US12439586

申请日：2007-08-29

申请人： Takahisa Yamauchi ,  Yukimasa Nagai ,  Akinori Taira

发明人： Takahisa Yamauchi ,  Yukimasa Nagai ,  Akinori Taira

IPC分类号： H04J1/00

CPC分类号： H04W48/12 ,  H04B7/0408 ,  H04B7/061 ,  H04B7/0695 ,  H04B7/0802 ,  H04B7/088 ,  H04L5/0037 ,  H04L5/0078 ,  H04L5/0094 ,  H04L27/0006 ,  H04W16/28 ,  H04W72/04 ,  H04W72/042

摘要： A base station of a radio communication system emits a radio wave having the same frequency by time division toward a plurality of specific areas from a plurality of antenna elements by using a multiple-beam antenna to form a plurality of spot beams, and transmits broadcast information through a plurality of beacon channels. Upon reception of the broadcast information, a terminal that exists in any one of the plurality of specific areas selects an optimum beacon channel, and transmits a communication establishment request and a bandwidth request to the base station through a request channel corresponding to information for identifying the antenna element, which is included in the broadcast information received through the selected optimum beacon channel. Upon reception of the requests, the base station schedules, when a channel is to be allocated, a channel allocation time including downlink and uplink data bandwidths and the like.

摘要翻译： 无线电通信系统的基站通过使用多波束天线从多个天线元件向多个特定区域分时地发射具有相同频率的无线电波，以形成多个点波束，并且发送广播信息 通过多个信标信道。 在接收到广播信息时，存在于多个特定区域中的任何一个区域中的终端选择最佳信标信道，并且通过与用于识别广播信息的信息相对应的请求信道向基站发送通信建立请求和带宽请求 天线元件，其被包括在通过所选择的最佳信标信道接收的广播信息中。 在接收到请求时，基站在要分配信道时调度包括下行链路和上行链路数据带宽等的信道分配时间。

公开(公告)号：US20100016023A1

公开(公告)日：2010-01-21

申请号：US12439586

申请日：2007-08-29

申请人： Takahisa Yamauchi ,  Yukimasa Nagai ,  Akinori Taira

发明人： Takahisa Yamauchi ,  Yukimasa Nagai ,  Akinori Taira

IPC分类号： H04M1/00

CPC分类号： H04W48/12 ,  H04B7/0408 ,  H04B7/061 ,  H04B7/0695 ,  H04B7/0802 ,  H04B7/088 ,  H04L5/0037 ,  H04L5/0078 ,  H04L5/0094 ,  H04L27/0006 ,  H04W16/28 ,  H04W72/04 ,  H04W72/042

摘要： A base station of a radio communication system emits a radio wave having the same frequency by time division toward a plurality of specific areas from a plurality of antenna elements by using a multiple-beam antenna to form a plurality of spot beams, and transmits broadcast information through a plurality of beacon channels. Upon reception of the broadcast information, a terminal that exists in any one of the plurality of specific areas selects an optimum beacon channel, and transmits a communication establishment request and a bandwidth request to the base station through a request channel corresponding to information for identifying the antenna element, which is included in the broadcast information received through the selected optimum beacon channel. Upon reception of the requests, the base station schedules, when a channel is to be allocated, a channel allocation time including downlink and uplink data bandwidths and the like.

摘要翻译： 无线电通信系统的基站通过使用多波束天线从多个天线元件向多个特定区域分时地发射具有相同频率的无线电波，以形成多个点波束，并且发送广播信息 通过多个信标信道。 在接收到广播信息时，存在于多个特定区域中的任何一个区域中的终端选择最佳信标信道，并且通过与用于识别广播信息的信息对应的请求信道向基站发送通信建立请求和带宽请求 天线元件，其被包括在通过所选择的最佳信标信道接收的广播信息中。 在接收到请求时，基站在要分配信道时调度包括下行链路和上行链路数据带宽等的信道分配时间。

公开(公告)号：US07768401B2

公开(公告)日：2010-08-03

申请号：US11628660

申请日：2004-07-29

申请人： Yukimasa Nagai ,  Hiroyoshi Suga

发明人： Yukimasa Nagai ,  Hiroyoshi Suga

IPC分类号： G08B13/14

CPC分类号： G08G1/14

摘要： A radio tag is arranged in each of a plurality of radio tag areas. The radio tag areas can be parking lots. A radio tag reader is configured to perform radio communications with the radio tags. The radio tag reader performs radio communications with each radio tag and based on the radio communication determines whether an object, which can be a vehicle, is present in the radio tag area corresponding to the radio tag.

摘要翻译： 在多个无线标签区域的每一个中设置无线标签。 无线电标签区域可以是停车场。 无线电标签读取器被配置为执行与无线电标签的无线电通信。 无线电标签读取器与每个无线电标签执行无线电通信，并且基于无线电通信确定在与无线电标签相对应的无线电标签区域中是否存在可以是车辆的对象。

公开(公告)号：US20090125778A1

公开(公告)日：2009-05-14

申请号：US12092281

申请日：2006-11-01

申请人： Shigeru Uchida ,  Toshiyuki Kuze ,  Wataru Matsumoto ,  Akinori Taira ,  Yukimasa Nagai

发明人： Shigeru Uchida ,  Toshiyuki Kuze ,  Wataru Matsumoto ,  Akinori Taira ,  Yukimasa Nagai

IPC分类号： H04L1/18 ,  G06F11/14

CPC分类号： H04L1/1819 ,  H04L1/0007 ,  H04L1/0009 ,  H04L1/0017 ,  H04L1/0057 ,  H04L1/1685 ,  H04L1/1887 ,  H04L1/1893

摘要： Within a communication system in which an ARQ control is exercised, in a transmission-side communication apparatus 11, a transmission scheduling unit 113 determines a transmission amount to be transmitted to a reception-side communication apparatus 21; an erasure correction encoding unit 112 performs an erasure correction encoding process on an information packet group that is made up of a plurality of packets to be transmitted so as to generate one or more erasure correction coded packets that fit the transmission amount instructed by the transmission scheduling unit 113 and specifies the one or more erasure correction coded packets as a unit of delivery confirmation; and a modulating unit 115 transmits a transmission data signal that has been generated by performing a predetermined modulation process on each of the erasure correction coded packets. In the reception-side communication apparatus 21, an erasure correction decoding unit 213 generates the information packet group by performing an erasure correction decoding process on the received signal and also generates, in the case where the erasure correction decoding process has successfully been performed, a delivery confirmation signal for each unit of delivery confirmation, the delivery confirmation signal indicating that reception of the transmission data signal has been completed, so that the generated delivery confirmation signal is transmitted to the transmission-side communication apparatus 11.

摘要翻译： 在进行ARQ控制的通信系统中，在发送侧通信装置11中，发送调度部113决定发送给接收方通信装置21的发送量; 消失校正编码单元112对由要发送的多个分组组成的信息分组组执行消失校正编码处理，以便生成适合由发送调度指示的发送量的一个或多个消失校正编码分组 单元113，并且将一个或多个消失校正编码包指定为传送确认单元; 并且调制单元115通过对每个消失校正编码分组执行预定的调制处理来发送已经生成的发送数据信号。 在接收侧通信装置21中，消失校正解码单元213通过对接收信号执行消失校正解码处理来生成信息包组，并且在已经成功执行消失校正解码处理的情况下，生成 用于每个发送确认单元的发送确认信号，指示发送数据信号的接收已经完成的发送确认信号，从而将生成的发送确认信号发送到发送侧通信装置11。

公开(公告)号：US07194240B2

公开(公告)日：2007-03-20

申请号：US10525069

申请日：2004-06-15

申请人： Hiroaki Hirai ,  Akinori Fujimura ,  Yukimasa Nagai ,  Yosikatu Tajima ,  Mari Otiai

发明人： Hiroaki Hirai ,  Akinori Fujimura ,  Yukimasa Nagai ,  Yosikatu Tajima ,  Mari Otiai

IPC分类号： H04B1/00 ,  H04B7/005 ,  H04Q7/20

CPC分类号： H04W24/00 ,  H04L1/0002 ,  H04L1/0016 ,  H04W74/00

摘要： A reception processing unit measures reception states of input reception signals of each of a plurality of channels, generates local channel reception information, and applies a reception processing to the input reception signals to generate decoded signals. A media-access-control unit generates transmission frames for each of the channels using transmission data. A transmission processing unit generates radio signals including each of the transmission frames. A channel-information processing unit generates local feedback information, and inserts the local feedback information generated into at least one of the radio signals that are transmitted by the radio communication apparatus.

公开(公告)号：US5575371A

公开(公告)日：1996-11-19

申请号：US469599

申请日：1995-06-06

申请人： Hideyuki Gonda ,  Masakatsu Sakaki ,  Yukimasa Nagai

发明人： Hideyuki Gonda ,  Masakatsu Sakaki ,  Yukimasa Nagai

IPC分类号： F16D27/112 ,  F16D27/14

CPC分类号： F16D27/112 ,  F16D2027/007

摘要： An electromagnetic clutch includes a first rotatable member for connection to an external driving source and a second rotatable member for connection to a driven member. An annular magnetic member is connected to the second rotatable member through a plurality of leaf springs. A third rotatable member is connected to the second rotatable member to limit the axial movement of the annular magnetic member. A plurality of connecting and absorbing devices are fixedly disposed between the annular magnetic member and the third rotatable member. These devices absorb vibration and impact forces when the annular magnetic member is attracted to the first rotatable member. A device is provided for preventing the destruction of the connecting and absorbing device due to the impact force and vibration created upon engagement of the electromagnetic clutch.

公开(公告)号：US08452310B1

公开(公告)日：2013-05-28

申请号：US13435896

申请日：2012-03-30

申请人： Philip Orlik ,  Jianlin Guo ,  Yukimasa Nagai

发明人： Philip Orlik ,  Jianlin Guo ,  Yukimasa Nagai

IPC分类号： H04Q7/20

CPC分类号： H04W16/18

摘要： A coverage map for a wireless network is generated. The network includes a server communicating with clients in a coverage area. The clients are mobile devices. At the server, location and reliability information from each client is received. The server then constructs and maintains the coverage map according to the location and reliability information. The coverage map is used to deliver telematic information from the server to the clients in response to requests by the clients.

摘要翻译： 生成无线网络的覆盖图。 该网络包括与覆盖区域中的客户端进行通信的服务器。 客户端是移动设备。 在服务器处，收到每个客户端的位置和可靠性信息。 然后，服务器根据位置和可靠性信息构建和维护覆盖图。 覆盖地图用于响应客户的请求将远程信息从服务器传送到客户端。

公开(公告)号：US07751424B2

公开(公告)日：2010-07-06

申请号：US10552274

申请日：2004-05-14

申请人： Yukimasa Nagai ,  Hiroyoshi Suga

发明人： Yukimasa Nagai ,  Hiroyoshi Suga

IPC分类号： H04L12/413

CPC分类号： H04W74/0816 ,  H04W76/20 ,  H04W88/08

摘要： A communication method for a CSMA network including a radio terminal and a base station supporting RTS/CTS, includes: the base station transmitting an RTS frame to the radio terminal during a transmission-suspend-period in which the radio terminal suspends transmission to prevent a collision of packets; the radio terminal transmitting an RTR frame to the base station after the transmission-suspend-period has elapsed; and the base station transmitting a data frame to the radio terminal in response to the RTR frame.

摘要翻译： 一种用于包括无线电终端和支持RTS / CTS的基站的CSMA网络的通信方法，包括：基站在无线终端暂停发送的发送暂停期间向无线终端发送RTS帧，以防止 数据包冲突; 无线电终端在传输暂停期间过去之后向基站发送RTR帧; 并且所述基站响应于所述RTR帧向所述无线终端发送数据帧。