公开(公告)号：US10560142B2

公开(公告)日：2020-02-11

申请号：US16357042

申请日：2019-03-18

申请人： FUJITSU LIMITED

发明人： Tatsuya Kikuzuki

IPC分类号： H04B1/707 ,  G06F17/14 ,  H04B1/69

摘要： A non-transitory computer-readable recording medium storing a program that causes a computer to execute a procedure to determine a feature of each standard of a wireless environment in which radio signals including a CSS signal chirp-modulated co-exist, the procedure includes obtaining a spectrum by subjecting each radio signal to fast Fourier transform with predetermined frequency resolution and time resolution capable of visualizing a feature of the CSS signal, coarsening the frequency resolution of the spectrum by adopting an effective value in a specific frequency domain, calculating a duration of the radio signal, based on the coarsened frequency resolution of the spectrum, coarsening the time resolution of the spectrum by adopting an effective value in the duration, calculating a bandwidth of the radio signal, based on the coarsened time resolution of the spectrum, and determining the feature of the radio signal of each standard, based on the duration and the bandwidth.

公开(公告)号：US10367665B2

公开(公告)日：2019-07-30

申请号：US15830835

申请日：2017-12-04

申请人： FUJITSU LIMITED

发明人： Tatsuya Kikuzuki ,  Teruhisa Ninomiya

IPC分类号： H04L7/04 ,  H04L27/00 ,  H04B1/713 ,  H04B1/709 ,  H04B1/7097 ,  H04B1/69 ,  G01R29/02

摘要： A radio analyzer includes a memory configured to store a first reference signal, and a processor coupled to the memory and configured to calculate a first correlation value between a received wave and a non-modulated wave, calculate a second correlation value between the received wave and the first reference signal in a target section of the received wave, the first correlation value being smaller than a first threshold value in the target section, and detect a modulated wave from the received wave based on the second correlation value.

公开(公告)号：US20170265188A1

公开(公告)日：2017-09-14

申请号：US15445177

申请日：2017-02-28

申请人： FUJITSU LIMITED

发明人： Tatsuya Kikuzuki ,  Shuhei Ohsako

IPC分类号： H04W72/04 ,  H04J3/16

CPC分类号： H04W72/0446 ,  H04J3/1694

摘要： An apparatus for assigning time slots refers to a hierarchical structure when a predetermined number of time slots in one of a plurality of communication cycles is assigned to a communication apparatus, identifies an associated frame whose use status is to be changed to used by the assignment of the predetermined number of time slots for a group managed in a layer corresponding to the requested communication cycle, and makes determination to assign a frame belonging to a group in which a number of time slots, in the associated frame, whose use status is changed to used is smaller, to the communication apparatus.

公开(公告)号：US09560488B2

公开(公告)日：2017-01-31

申请号：US14751376

申请日：2015-06-26

申请人： FUJITSU LIMITED

发明人： Toshihiro Kunitake ,  Hiroki Akano ,  Yuki Iwamasa ,  Eiji Matsumoto ,  Ichirou Ida ,  Tatsuya Kikuzuki ,  Kazumi Kasai ,  Teruhisa Ninomiya

IPC分类号： H04W76/02 ,  H04W40/34 ,  H04W4/00 ,  H04W4/02 ,  H04W8/00 ,  H04W84/10 ,  H04Q9/00 ,  H04W84/18

CPC分类号： H04W4/027 ,  H04Q9/00 ,  H04W4/80 ,  H04W8/005 ,  H04W84/18

摘要： A BAN system includes multiple terminal apparatuses connected by wireless communication, where a terminal apparatus of the multiple terminal apparatuses is configured to identify in which direction acceleration has changed, the direction being identified based on a measurement result of a sensor of the terminal apparatus, the sensor being configured to measure acceleration; and to refer to information that specifies corresponding to places where the plurality of terminal apparatuses is to be attached to a body, directions in which acceleration changes when the body performs a given behavior, and determines based on the identified direction, a place where the terminal apparatus is attached to the body.

摘要翻译： BAN系统包括通过无线通信连接的多个终端装置，其中，多个终端装置的终端装置被配置为基于终端装置的传感器的测量结果来识别加速度已经改变的方向，识别方向， 传感器被配置成测量加速度; 参照指定对应于多个终端装置附着于身体的位置的信息，当身体执行给定行为时加速度变化的方向，并且基于所识别的方向来确定终端的位置 装置附着在身上。

公开(公告)号：US09344370B2

公开(公告)日：2016-05-17

申请号：US14203159

申请日：2014-03-10

申请人： FUJITSU LIMITED

发明人： Tatsuya Kikuzuki

IPC分类号： H04L12/803 ,  H04L12/725 ,  H04L12/801 ,  H04L12/727 ,  H04L12/707

CPC分类号： H04L47/122 ,  H04L45/121 ,  H04L45/24 ,  H04L45/302 ,  H04L47/14

摘要： A communication apparatus includes: a judgment section configured to judge a request for delay guarantee for data transmission; a route selection section configured to: select a first route including a mean delay time meeting a first condition, from routes available between the communication apparatus and a second communication apparatus which are in a network of wireless communication, when the request is a first request; and select a second route including a probability of successful data transmission for a given number of transmissions meeting a second condition, from the routes, when the request is a second request; and a transmission section configured to transmit the data to one of the first route and the second route.

摘要翻译： 一种通信装置，包括：判断部，判定数据发送的延迟保证请求; 路线选择部，被配置为：当所述请求是第一请求时，从所述通信装置和处于无线通信网络的第二通信装置之间的路径中选择包含满足第一条件的平均延迟时间的第一路线; 并且当所述请求是第二请求时，从所述路由中选择包括对于满足第二条件的给定数量的传输的成功数据传输的概率的第二路由; 以及发送部，被配置为将数据发送到第一路线和第二路径中的一个。

公开(公告)号：US09277479B2

公开(公告)日：2016-03-01

申请号：US14159017

申请日：2014-01-20

申请人： FUJITSU LIMITED

发明人： Kaoru Yokoo ,  Yoji Ohashi ,  Tatsuya Kikuzuki ,  Ichirou Ida ,  Kazumi Kasai

IPC分类号： H04W40/14 ,  H04W36/30 ,  H04L12/00 ,  H04W24/00 ,  H04L12/403 ,  A61B5/00 ,  H04L12/707 ,  H04L12/703 ,  H04B7/12 ,  H04L1/04 ,  H04L1/08 ,  H04B7/08 ,  H04W76/02 ,  H04L29/14 ,  G06F19/00

CPC分类号： H04W40/14 ,  A61B5/0028 ,  G06F19/3418 ,  H04B7/0802 ,  H04B7/12 ,  H04L1/04 ,  H04L1/08 ,  H04L1/1887 ,  H04L1/22 ,  H04L12/00 ,  H04L12/403 ,  H04L45/22 ,  H04L45/28 ,  H04L69/40 ,  H04W24/00 ,  H04W36/30 ,  H04W76/15 ,  H04W76/19

摘要： A wireless communication system includes first and second wireless communication apparatuses. The first wireless communication apparatus includes a plurality of communication units that perform communication in different frequency bands. The plurality of communication units transmits the same control signal and data in the different frequency bands to keep allocation of communication slots for the second wireless communication apparatus on a plurality of paths. When detecting a communication failure while connecting to and communicating with one communication unit through one path, the second wireless communication apparatus switches to another communication unit and continues the communication through another path.

摘要翻译： 无线通信系统包括第一和第二无线通信设备。 第一无线通信装置包括执行不同频带的通信的多个通信单元。 多个通信单元在不同频带中发送相同的控制信号和数据，以便在多个路径上保持第二无线通信装置的通信时隙的分配。 当在通过一个路径连接到一个通信单元并且与一个通信单元通信时检测到通信故障时，第二无线通信设备切换到另一个通信单元并且通过另一个路径继续通信。

公开(公告)号：US20150341820A1

公开(公告)日：2015-11-26

申请号：US14673899

申请日：2015-03-31

申请人： FUJITSU LIMITED

发明人： Tatsuya Kikuzuki

IPC分类号： H04W28/02 ,  H04W76/02 ,  H04W4/00

CPC分类号： H04W28/0215 ,  H04W4/80 ,  H04W74/006 ,  H04W74/0816

摘要： A communication method for use in a communication system having a plurality of communication devices includes: a first communication device transmitting within a predefined period a connection request signal requesting a connection with another communication device; a second communication device transmitting a connection permit signal which contains the number of connection request signals received during the predefined period as the number of requesting candidates; the first communication device obtaining a transmission probability defining the probability of signal transmission such that the transmission probability decreases as the number of requesting candidates contained in the connection permit signal received from the second communication device increases; and the first communication device making a decision as to whether or not to transmit a signal out in accordance with the transmission probability at the timing that the signal can be transmitted to the second communication device.

摘要翻译： 一种在具有多个通信设备的通信系统中使用的通信方法，包括：第一通信设备，在预定义期间内发送请求与另一通信设备的连接的连接请求信号; 第二通信装置，发送包含在所述预定时段期间接收到的连接请求信号的数量的连接允许信号作为请求候选的数量; 第一通信设备获得定义信号传输概率的传输概率，使得传输概率随着包含在从第二通信设备接收的连接许可信号中的请求候选的数量增加而减小; 以及所述第一通信设备在所述信号可以被发送到所述第二通信设备的定时判定是否根据所述传输概率发送信号。