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.

公开(公告)号：US20060121921A1

公开(公告)日：2006-06-08

申请号：US10562123

申请日：2004-06-25

申请人： Yoshikatsu Tajima ,  Akinori Fujimura ,  Yukimasa Nagai ,  Hiroaki Hirai ,  Mari Ochiai

发明人： Yoshikatsu Tajima ,  Akinori Fujimura ,  Yukimasa Nagai ,  Hiroaki Hirai ,  Mari Ochiai

IPC分类号： H04B7/00 ,  H04M1/00

CPC分类号： H04L27/2605 ,  H04L5/0023 ,  H04L5/0037 ,  H04L5/0051 ,  H04L5/0085 ,  H04L5/0096 ,  H04L5/023 ,  H04L25/03866

摘要： A MAC unit divides data to be transmitted into number of applying channels, thereby generating transmission data. An applying-channel notifying unit inserts channel information for identifying an applying channel into a used area of the transmission data. Transmission processing units corresponding to the applying channels generate radio frames from the transmission data into which the channel information is inserted, and transmit the generated radio frames to the radio communication apparatus at the reception side.

摘要翻译： MAC单元将要发送的数据划分为多个应用信道，从而生成发送数据。 应用信道通知单元将用于识别应用信道的信道信息插入到传输数据的使用区域中。 对应于应用信道的发送处理单元从插入信道信息的发送数据生成无线帧，并将所生成的无线帧发送到接收侧的无线通信装置。

公开(公告)号：US20060056443A1

公开(公告)日：2006-03-16

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： H04J3/02

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.

公开(公告)号：US09258760B2

公开(公告)日：2016-02-09

申请号：US14376500

申请日：2012-05-29

申请人： Yukimasa Nagai ,  Yosuke Yokoyama

发明人： Yukimasa Nagai ,  Yosuke Yokoyama

IPC分类号： H04B7/00 ,  H04W40/16 ,  H04W16/14 ,  H04W64/00 ,  H04W4/04 ,  H04W72/08 ,  H04W48/16 ,  G01S7/02

CPC分类号： H04W40/16 ,  G01S7/023 ,  H04W4/046 ,  H04W16/14 ,  H04W48/16 ,  H04W64/00 ,  H04W64/006 ,  H04W72/02 ,  H04W72/082

摘要： An in-vehicle apparatus that is a radio communication apparatus includes: a radio communication unit capable of performing radio communication using at least a 5-GHz band; a present-position detecting unit that detects a present position of the own apparatus; and a radio-communication-zone predicting unit that determines, when the radio communication unit is performing communication, whether switching of a channel of the radio communication unit is necessary on a basis of interference data, which is information concerning a coverage of a radio wave transmitted from another system that uses a 5-GHz band and transmits and receives a radio wave in a stationary state, map data, and the present position detected by the present-position detecting unit, and, when switching is necessary, further selects a switching destination channel or causes the radio communication unit to select the switching destination channel.

摘要翻译： 作为无线通信装置的车载装置包括：能够使用至少5GHz频带进行无线通信的无线通信部; 当前位置检测单元，其检测自身装置的当前位置; 以及无线通信区域预测单元，其在无线电通信单元正在进行通信时，基于作为关于无线电波的覆盖的信息的干扰数据来确定无线电通信单元的信道的切换是否需要 从使用5GHz频带的另一个系统发送，并且发送和接收静止状态的无线电波，地图数据和由当前位置检测单元检测到的当前位置，并且当需要切换时，进一步选择切换 或使无线电通信单元选择切换目的地信道。

公开(公告)号：US08958456B2

公开(公告)日：2015-02-17

申请号：US13983391

申请日：2012-02-14

申请人： Yukimasa Nagai

发明人： Yukimasa Nagai

IPC分类号： H04B1/00 ,  H04B1/715 ,  H04W72/02 ,  H04W88/06 ,  H04W16/14

CPC分类号： H04B1/715 ,  H04W16/14 ,  H04W72/02 ,  H04W88/06

摘要： A composite wireless device including a WLAN device and a BT device. The composite wireless device includes a wireless-channel control unit that determines usable FH channels that can be used for frequency hopping of the BT device, based on communication quality information of the WLAN channel, and notifies the BT device of the usable frequency bands, and a BT-communication control unit that acquires communication quality information of an extended frequency band, which is a frequency band other than the usable frequency bands, as extended communication quality information. The wireless-channel control unit adds the FH channels in the WLAN channel, which are determined as being unused based on the extended communication quality information, as the usable FH channels.

摘要翻译： 一种包括WLAN设备和BT设备的复合无线设备。 复合无线设备包括：无线信道控制单元，其基于WLAN信道的通信质量信息确定可用于BT设备的跳频的可用FH信道，并向BT设备通知可用频带，以及 作为扩展通信质量信息的BT通信控制单元，其获取作为除了可用频带之外的频带的扩展频带的通信质量信息。 无线信道控制单元将基于扩展通信质量信息确定为未被使用的WLAN信道中的FH信道添加为可用的FH信道。

公开(公告)号：US07889058B2

公开(公告)日：2011-02-15

申请号：US11631677

申请日：2004-07-29

申请人： Hiroyoshi Suga ,  Yukimasa Nagai

发明人： Hiroyoshi Suga ,  Yukimasa Nagai

IPC分类号： H04Q5/22

CPC分类号： G06K7/10128 ,  G06K7/0008 ,  G06K7/10019 ,  H04B1/59

摘要： The radio-tag reading system includes a radio-tag reader and a radio tag storing therein radio tag information. In the radio-tag reader, a radio-tag detection processor transmits via the communication unit a search signal at a predetermined time interval, and detects that the radio tag enters into the communication area of the communication unit based on a response signal to the search signal. A radio-tag information communication processor reads the radio tag information from the radio tag upon receiving the response signal from the radio tag. In the radio tag, a response processor transmits, upon receiving a signal from the radio-tag reader, a response signal in response to the signal.

摘要翻译： 无线电标签读取系统包括无线电标签读取器和存储无线电标签信息的无线电标签。 在无线标签读取器中，无线电标签检测处理器以预定的时间间隔经由通信单元发送搜索信号，并且基于对搜索的响应信号检测无线标签进入通信单元的通信区域 信号。 无线标签信息通信处理器从无线标签接收到响应信号时，从无线标签读出无线标签信息。 在无线电标签中，响应处理器响应于该信号，在从无线电标签读取器接收到信号时发送响应信号。

公开(公告)号：US07720502B2

公开(公告)日：2010-05-18

申请号：US11794223

申请日：2005-02-09

申请人： Hiroyoshi Suga ,  Yukimasa Nagai

发明人： Hiroyoshi Suga ,  Yukimasa Nagai

IPC分类号： H04B7/00

CPC分类号： H04W52/246 ,  H04W52/10 ,  H04W52/242 ,  H04W52/267 ,  H04W52/50 ,  H04W74/0816 ,  Y02D70/14

摘要： Upon receiving a frame from a transmitting radio device, a propagation attenuation calculator calculates a propagation attenuation amount from information in the received frame and registers a propagation attenuation amount for each transmission rate in a table. When transmitting a frame, a transmission power controller, selects optimum transmission power to the transmission destination radio device from the table and sends the frame at the selected optimum transmission power, and detects whether there is a value smaller than the selected optimum transmission power in the optimum transmission power at a minimum transmission rate of a radio device different from a transmission destination radio device registered in the optimum transmission power table.

摘要翻译： 在从发送无线电设备接收到帧时，传播衰减计算器根据接收到的帧中的信息计算传播衰减量，并且在表中记录每个传输速率的传播衰减量。 当发送帧时，发送功率控制器从表中向发送目的地无线装置选择最佳发送功率，并以所选择的最佳发送功率发送该帧，并且检测是否存在小于所选择的最佳发送功率的值 在与最佳发送功率表中登记的发送目的地无线电设备不同的无线电设备的最小传输速率下的最佳发送功率。

公开(公告)号：US20070247315A1

公开(公告)日：2007-10-25

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： G08B5/22

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。