Wireless network system using cyclic frame
    3.
    发明授权
    Wireless network system using cyclic frame 有权
    无线网络系统采用循环帧

    公开(公告)号:US08248989B2

    公开(公告)日:2012-08-21

    申请号:US12553635

    申请日:2009-09-03

    CPC classification number: H04W72/1231 H04B7/2656 H04W72/1263 H04W84/18

    Abstract: A wireless network system using a cyclic frame including a beacon period (BP), a mesh contention access period (MCAP), and a slot period (SP). The cyclic frame has a frame structure that shares a channel hopping sequence of a node, thereby sharing the channel hopping sequence that operates as an existing mesh node without generating an additional channel hopping sequence, and supporting mesh and star type topologies together in order to efficiently operate a network.

    Abstract translation: 一种使用包括信标周期(BP),网格争用访问周期(MCAP)和时隙周期(SP)的循环帧的无线网络系统。 循环帧具有共享节点的信道跳频序列的帧结构,从而共享作为现有网格节点而操作的信道跳频序列,而不产生附加的信道跳频序列,并且将网格和星型拓扑支持在一起以有效地 操作网络。

    Apparatus for synchronizing clock in real-time locating system and method therefor
    5.
    发明授权
    Apparatus for synchronizing clock in real-time locating system and method therefor 失效
    用于实时定位系统中的时钟同步的装置及其方法

    公开(公告)号:US08005369B2

    公开(公告)日:2011-08-23

    申请号:US12085767

    申请日:2005-12-27

    CPC classification number: H04W56/00 H04B7/2693 H04J3/0667

    Abstract: A highly precise clock synchronization apparatus in a real-time locating system (RTLS), includes an optical transmitting/receiving unit for receiving a clock information frame from a clock synchronization server, converting the received clock information frame in series-parallel, and transmitting/receiving the clock information data and the clock information; an offset estimation unit for detecting a preamble signal and a clock information signal from the series-parallel converted clock information frame, calculating a phase difference value by comparing the detected preamble signal with the detected clock information signal, and outputting an offset value based on the calculated phase difference value; and a clock synchronization unit for updating a local clock value to a time of the clock synchronization server based on the offset value and the clock information frame.

    Abstract translation: 一种实时定位系统(RTLS)中的高精度时钟同步装置,包括一个用于从时钟同步服务器接收时钟信息帧的光发送/接收单元,并行地接收所接收的时钟信息帧,并发送/ 接收时钟信息数据和时钟信息; 偏移估计单元,用于从串并行转换时钟信息帧中检测前置码信号和时钟信息信号,通过将检测到的前导信号与检测到的时钟信息信号进行比较来计算相位差值,并输出基于 计算相位差值; 以及时钟同步单元,用于基于偏移值和时钟信息帧将本地时钟值更新为时钟同步服务器的时间。

    TIME SYNCHRONIZATION AND ROUTING METHOD IN WIRELESS SENSOR NETWORK, AND APPARATUS FOR ENABLING THE METHOD
    6.
    发明申请
    TIME SYNCHRONIZATION AND ROUTING METHOD IN WIRELESS SENSOR NETWORK, AND APPARATUS FOR ENABLING THE METHOD 有权
    无线传感器网络中的时间同步和路由方法,以及实现方法的设备

    公开(公告)号:US20110002251A1

    公开(公告)日:2011-01-06

    申请号:US12667298

    申请日:2008-07-11

    Abstract: A time synchronization method in a wireless sensor network, a low power routing method using a reservation scheme, and an apparatus for performing the method are provided. The time synchronization method in the wireless sensor network may include: receiving a first synchronization request command packet from a parent node that manages time synchronization for a predetermined synchronization region; receiving, from the parent node, a second synchronization request command packet that has a transmission timestamp value of the first synchronization request command packet; and performing time synchronization for a child node based on a reception time of the first synchronization request command packet, a reception time of the second synchronization request command packet, and the transmission timestamp value of the first synchronization request command packet.

    Abstract translation: 提供无线传感器网络中的时间同步方法,使用预约方案的低功率路由方法以及用于执行该方法的装置。 无线传感器网络中的时间同步方法可以包括:从管理预定同步区域的时间同步的父节点接收第一同步请求命令分组; 从所述父节点接收具有所述第一同步请求命令分组的传输时间戳值的第二同步请求命令分组; 以及基于所述第一同步请求命令分组的接收时间,所述第二同步请求命令分组的接收时间和所述第一同步请求命令分组的传输时间戳值来执行子节点的时间同步。

    REMOTE CONTROL METHOD OF SENSOR NODE FOR LOW-POWER AND SENSOR NETWORK THEREFOR
    7.
    发明申请
    REMOTE CONTROL METHOD OF SENSOR NODE FOR LOW-POWER AND SENSOR NETWORK THEREFOR 审中-公开
    用于低功率和传感器网络的传感器节点的远程控制方法

    公开(公告)号:US20100322125A1

    公开(公告)日:2010-12-23

    申请号:US12517897

    申请日:2007-10-29

    CPC classification number: H04W52/0219 H04W84/18

    Abstract: Provided are a remote control method of a sensor node for low-power and a sensor network therefor. The remote control method, including: generating an interrupt signal when a node receives a remote control signal from a corresponding micro radio frequency (RF) processor installed in a gateway; regenerating the interrupt signal when the node is not converted from a sleep mode to a wake-up mode; collecting sensing data by communicating with other nodes when the node is converted from the sleep mode to the wake-up mode; and converting from the wake-up mode into the sleep mode when the communication is completed.

    Abstract translation: 提供了用于低功率的传感器节点的遥控方法和用于其的传感器网络。 所述遥控方法包括:当节点从安装在网关中的相应的微型射频(RF)处理器接收到遥控信号时产生中断信号; 当节点未从休眠模式转换到唤醒模式时,重新生成中断信号; 当节点从睡眠模式转换到唤醒模式时,通过与其他节点通信来收集感测数据; 并且当通信完成时,从唤醒模式转换到睡眠模式。

    METHOD OF OPTIMAL DATA TRANSMISSION FOR IMPROVING DATA TRANSMISSION RATE IN MULTI-HOP WIRELESS NETWORK
    8.
    发明申请
    METHOD OF OPTIMAL DATA TRANSMISSION FOR IMPROVING DATA TRANSMISSION RATE IN MULTI-HOP WIRELESS NETWORK 审中-公开
    用于改善多路无线网络中数据传输速率的最佳数据传输方法

    公开(公告)号:US20100317383A1

    公开(公告)日:2010-12-16

    申请号:US12518013

    申请日:2007-12-05

    Abstract: There is provided a method for optimal data transmission for improving a data transmission rate of a node with variable transmission power in a multi-hop wireless network, the method including the steps of: obtaining channel state information about a current wireless channel of the node; calculating a carrier sensing range in the number of hops using the obtained channel state information, a target signal-to-interference ratio, and a contention window size in order to minimize data collision; calculating the number of nodes attempting data transmission based on signals received from neighbor nodes, the number of the nodes attempting data transmission being the number of contention nodes; and setting transmission power adaptively according to the calculated carrier sensing range value and the contention node numbers and transmitting data with the set of transmission power.

    Abstract translation: 提供一种用于在多跳无线网络中提高具有可变发射功率的节点的数据传输速率的最佳数据传输方法,所述方法包括以下步骤:获得关于节点当前无线信道的信道状态信息; 使用所获得的信道状态信息,目标信号干扰比和竞争窗口大小来计算跳数中的载波感测范围,以便最小化数据冲突; 基于从邻居节点接收的信号计算尝试进行数据传输的节点数,尝试数据传输的节点数量是争用节点数; 并根据所计算的载波感测范围值和竞争节点号码自适应地设定发送功率,并以发送功率集合发送数据。

    APPARATUS AND METHOD FOR COLLECTING SHOPPING INFORMATION USING MAGNETIC SENSOR
    9.
    发明申请
    APPARATUS AND METHOD FOR COLLECTING SHOPPING INFORMATION USING MAGNETIC SENSOR 审中-公开
    使用磁传感器收集购物信息的装置和方法

    公开(公告)号:US20100089993A1

    公开(公告)日:2010-04-15

    申请号:US12517543

    申请日:2007-10-24

    CPC classification number: G06Q30/06 G06Q30/02

    Abstract: Provided are an apparatus and method for collecting shopping information using a magnetic sensor. The shopping information collecting apparatus, includes: a magnetic value sensing and analyzing means for sensing and analyzing a magnetic value within own zone in real-time; a central processing means for processing shopping information based on the magnetic value analyzed by the magnetic value sensing and analyzing means; and a shopping information transmitting means for transmitting shopping information processed by the central processing means.

    Abstract translation: 提供了一种使用磁传感器收集购物信息的装置和方法。 购物信息收集装置包括:实时检测和分析本区域内的磁值的磁值检测和分析装置; 用于基于由磁值检测和分析装置分析的磁值来处理购物信息的中央处理装置; 以及购买信息发送装置,用于发送由中央处理装置处理的购物信息。

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