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：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：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：US20090109936A1

公开(公告)日：2009-04-30

申请号：US11887143

申请日：2006-05-02

申请人： Yukimasa Nagai

发明人： Yukimasa Nagai

IPC分类号： H04J3/00

CPC分类号： H04W74/0808 ,  H04W72/12 ,  H04W84/12

摘要： When prohibiting data transmission by a radio communication terminal, such as a radio communication terminal L-STA, a terminal control apparatus generates radio data including information about a data transmission prohibition time interval in an L-SIG which is a header region which each radio communication terminal can recognize in common, and, if a use state checking unit 21 has checked to see that a channel CH_a is being not used, transmits the radio data to the radio communication terminal L-STA and so on in the form of frames which the radio communication terminal L-STA can recognize by using the channel CH_a.

摘要翻译： 在禁止诸如无线电通信终端L-STA之类的无线电通信终端的数据传输时，终端控制装置产生无线电数据，该无线电数据包括作为每个无线电通信的头部区域的L-SIG中的数据传输禁止时间间隔的信息 终端可以共同识别，并且如果使用状态检查单元21已经检查以看到没有使用信道CH_a，则将无线电数据以帧的形式发送到无线电通信终端L-STA等， 无线电通信终端L-STA可以通过使用信道CH_a来识别。

公开(公告)号：US07508809B2

公开(公告)日：2009-03-24

申请号：US10551701

申请日：2004-05-14

申请人： Yukimasa Nagai ,  Hiroyoshi Suga

发明人： Yukimasa Nagai ,  Hiroyoshi Suga

IPC分类号： H04J3/00 ,  H04B7/212

CPC分类号： H04W28/16 ,  H04W74/08 ,  H04W84/12

摘要： A base station for a wireless LAN system has physical layers corresponding to channels, and a MAC layer. The physical layers each transmits and receives a radio signal conforming to an IEEE 802.11 standard using a corresponding channel. When transmitting, the MAC layer divides an entire data frame conforming to the standard from a head of the data frame, in accordance with a transmission rate of each physical layer, and allots the divided data frame to the physical layers so that burst times of the channels are substantially equal. When receiving, the MAC layer combines data frames received via channels through operations opposite to those performed when transmitting.

摘要翻译： 用于无线LAN系统的基站具有对应于信道的物理层和MAC层。 每个物理层使用对应的信道发送和接收符合IEEE 802.11标准的无线电信号。 当发送时，MAC层根据每个物理层的传输速率，从数据帧的头部划分符合标准的整个数据帧，并将划分的数据帧分配给物理层，使得 通道基本相等。 当接收时，MAC层通过与发送时执行的操作相反的操作来组合经由信道接收的数据帧。

公开(公告)号：US07474676B2

公开(公告)日：2009-01-06

申请号：US10939210

申请日：2004-09-10

申请人： Zhifeng Tao ,  Daqing Gu ,  Yukimasa Nagai

发明人： Zhifeng Tao ,  Daqing Gu ,  Yukimasa Nagai

IPC分类号： H04J3/16

CPC分类号： H04W28/06 ,  H04L1/1628

摘要： A method aggregates frames to be transmitted over a channel in a wireless network into a single frame. Multiple MSDU frames having identical destination addresses and identical traffic classes, received in the media access control layer from the logical link layer in a transmitting station are aggregated into a single aggregate MPDU frame, which can be transmitted on the channel to a receiving station. In addition, aggregate MSDU frames with different destination addresses and different traffic classes received from the media access control layer can be further aggregated into a single aggregate PPDU frame before transmission.

摘要翻译： 一种方法将要在无线网络中的信道上发送的帧聚合成单个帧。 具有相同目的地址和相同业务类别的多个MSDU帧在媒体接入控制层中从发送站中的逻辑链路层被收集到单个聚合MPDU帧中，该帧可以在该信道上发送到接收站。 另外，从媒体接入控制层接收到的具有不同目的地址和不同业务类别的聚合MSDU帧可以在传输之前被进一步聚合成单个聚合PPDU帧。

公开(公告)号：US20060189352A1

公开(公告)日：2006-08-24

申请号：US10551701

申请日：2004-05-14

申请人： Yukimasa Nagai ,  Hiroyoshi Suga

发明人： Yukimasa Nagai ,  Hiroyoshi Suga

IPC分类号： H04B1/38

CPC分类号： H04W28/16 ,  H04W74/08 ,  H04W84/12

摘要： A base station for a wireless LAN system has physical layers corresponding to channels, and a MAC layer. The physical layers each transmits and receives a radio signal conforming to an IEEE 802.11 standard using a corresponding channel. When transmitting, the MAC layer divides an entire data frame conforming to the standard from a head of the data frame, in accordance with a transmission rate of each physical layer, and allots the divided data frame to the physical layers so that burst times of the channels are substantially equal. When receiving, the MAC layer combines data frames received via channels through operations opposite to those performed when transmitting.