MAC forwarding method for multi-hop routing in communication system between vehicles
    71.
    发明申请
    MAC forwarding method for multi-hop routing in communication system between vehicles 有权
    车辆通信系统中多跳路由的MAC转发方法

    公开(公告)号:US20070110067A1

    公开(公告)日:2007-05-17

    申请号:US11487534

    申请日:2006-07-13

    IPC分类号: H04L12/56

    CPC分类号: H04W40/26

    摘要: Provided is a Media Access Control (MAC) forwarding method for multi-hop routing in a communication system between vehicles. The method includes the steps of: a) receiving a frame from all nodes and checking whether there are duplicate frames; b) partly updating forwarding cache table (FCT) information, or updating SNT information and checking whether a destination address is a corresponding node; c) updating the FCT information, transmitting an Ack signal and transferring the frame to the upper layer, or searching whether the destination address is registered as “d_addr”; d) updating the FCT information and transmitting a delay ACK frame or checking whether the transmitted frame is a flooding frame; and e) updating the FCT information, checking whether the other node does not transmit the “d_ack” and inserting a flooding frame, otherwise, updating the FCT information and abandoning the frame.

    摘要翻译: 提供了一种用于车辆之间的通信系统中的多跳路由的媒体接入控制(MAC)转发方法。 该方法包括以下步骤:a)从所有节点接收帧并检查是否存在重复帧; b)部分更新转发高速缓存表(FCT)信息,或更新SNT信息并检查目的地址是否是对应节点; c)更新FCT信息,发送Ack信号并将帧传送到上层,或者搜索目的地地址是否被注册为“d_addr”; d)更新FCT信息并发送延迟ACK帧或检查所发送的帧是否是泛洪帧; 以及e)更新FCT信息,检查其他节点是否不发送“d_ack”并插入洪泛帧,否则更新FCT信息并放弃该帧。

    Apparatus and method for receiving tag signal in mobile RFID reader
    72.
    发明申请
    Apparatus and method for receiving tag signal in mobile RFID reader 有权
    用于在移动RFID读写器中接收标签信号的装置和方法

    公开(公告)号:US20070069864A1

    公开(公告)日:2007-03-29

    申请号:US11527998

    申请日:2006-09-27

    IPC分类号: H04Q5/22

    CPC分类号: H04B5/02 H04B5/0062

    摘要: Provided are a tag signal receiving apparatus that can perform digital Amplitude Shift Keying (ASK) demodulation onto signals received in a tag, decode the demodulated tag signal in synchronization, and acquire tag data in a mobile RFID reader, and a method thereof. The tag signal receiving apparatus includes: a digital demodulating block for performing ASK demodulation onto a digital tag signal received through a reader antenna and converted into a digital tag signal in an analog-to-digital (AD) converter; and a decoding block for detecting edge position information of the demodulated tag signal by performing accumulation and decoding the demodulated tag signal by using the detected edge position information. The digital demodulating block includes a channel level comparator, a phase inverter, a signal converter; and an adder. The decoding block includes an edge information detector, a correlator, and a bit data decider.

    摘要翻译: 提供一种标签信号接收装置,其可以对在标签中接收的信号执行数字幅移键控(ASK)解调,同步解码解调的标签信号,并在移动RFID读取器中获取标签数据及其方法。 标签信号接收装置包括:数字解调块,用于对通过读取器天线接收的数字标签信号进行ASK解调,并在模数(AD)转换器中转换为数字标签信号; 以及解码块,用于通过使用检测到的边缘位置信息来对解调的标签信号进行累加和解码来检测解调标签信号的边缘位置信息。 数字解调块包括信道电平比较器,相位逆变器,信号转换器; 和加法器。 解码块包括边缘信息检测器,相关器和位数据判定器。

    Microstrip patch antenna and array antenna using superstrate
    73.
    发明授权
    Microstrip patch antenna and array antenna using superstrate 有权
    微带贴片天线和阵列天线使用覆盖层

    公开(公告)号:US06946995B2

    公开(公告)日:2005-09-20

    申请号:US10637843

    申请日:2003-08-08

    摘要: The present invention provides a microstrip patch antenna and array antenna using dielectric superstrate in order to enhance the antenna gain by stacking radiating patches and dielectric layers. The microstrip patch antenna using a dielectric superstrate for having high gain and wide bandwidth, includes: a lower patch antenna layer having a dielectric layer and a ground plane for radiating energy by exciting current by a feedline; a upper patch antenna layer having dielectric film electromagnetically coupled by the lower radiating patch; a foam layer for distancing the upper patch antenna layer from the lower patch antenna layer; and a dielectric superstrate located by being predeteremined distant from the upper patch antenna layer.

    摘要翻译: 本发明提供一种使用电介质覆层的微带贴片天线和阵列天线,以通过堆放辐射片和电介质层来增强天线增益。 使用具有高增益和宽带宽的电介质覆层的微带贴片天线包括:具有介电层的下贴片天线层和用于通过馈线激励电流来辐射能量的接地平面; 具有通过下辐射贴片电磁耦合的介电膜的上贴片天线层; 用于将上贴片天线层与下贴片天线层隔开的泡沫层; 以及通过预定义远离上贴片天线层定位的介电覆盖层。

    Time synchronization and routing method in wireless sensor network, and apparatus for enabling the method
    75.
    发明授权
    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,以及启用该方法的装置

    公开(公告)号:US08848584B2

    公开(公告)日:2014-09-30

    申请号:US12667298

    申请日:2008-07-11

    IPC分类号: G08C17/00 H04J3/06 H04W56/00

    摘要: 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.

    摘要翻译: 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。

    Sensor node included in sensor network, update server updating the same, and method of updating sensor node
    77.
    发明授权
    Sensor node included in sensor network, update server updating the same, and method of updating sensor node 有权
    传感器网络中包含传感器节点,更新服务器更新,更新传感器节点的方法

    公开(公告)号:US08667481B2

    公开(公告)日:2014-03-04

    申请号:US12630328

    申请日:2009-12-03

    IPC分类号: G06F9/44

    CPC分类号: G06F8/65

    摘要: Provided are a sensor node included in a sensor network, an update server updating the sensor node, and a method of updating a sensor node. The update server updating a sensor node included in a sensor network includes an execution code manager managing execution codes for a plurality of sensor nodes included in the sensor network, a rule generator generating an update rule based on a result of comparing an existing execution code managed by the execution code manager with an update execution code required for a new function update of the sensor node, and a downloader causing the sensor node to download the update rule generated by the rule generator. Accordingly, an execution code can be updated by a small amount of data transmission.

    摘要翻译: 提供了传感器网络中包括的传感器节点,更新传感器节点的更新服务器以及更新传感器节点的方法。 更新传感器网络中包括的传感器节点的更新服务器包括管理传感器网络中包括的多个传感器节点的执行代码的执行代码管理器,基于比较现有执行代码管理的结果生成更新规则的规则生成器 执行代码管理器具有传感器节点的新功能更新所需的更新执行代码,以及导致传感器节点下载规则生成器生成的更新规则的下载器。 因此,可以通过少量的数据传输来更新执行代码。

    RFID reader and method for suppressing transmission leakage signal thereof
    78.
    发明授权
    RFID reader and method for suppressing transmission leakage signal thereof 失效
    RFID读写器及其传输泄漏信号的抑制方法

    公开(公告)号:US08666323B2

    公开(公告)日:2014-03-04

    申请号:US12786777

    申请日:2010-05-25

    IPC分类号: H04B17/00

    摘要: Provided are an RFID reader and a method for suppressing transmission leakage signals thereof. The RFID reader includes a first loop, a second loop, and a digital signal processor. The first loop suppresses a first transmission leakage signal of an RX signal in response to a first leakage control signal. The second loop suppresses a second transmission leakage signal of the RX signal, received through the first loop, in response to a second leakage control signal. The digital signal processor generates the first leakage control signal and the second leakage control signal. The digital signal processor generates the first leakage control signal until the level of the first transmission leakage signal becomes equal to or lower than the level of a first reference transmission leakage signal.

    摘要翻译: 提供RFID读取器和用于抑制其传输泄漏信号的方法。 RFID读取器包括第一环路,第二环路和数字信号处理器。 第一回路响应于第一泄漏控制信号来抑制RX信号的第一传输泄漏信号。 响应于第二泄漏控制信号,第二回路抑制通过第一回路接收的RX信号的第二传输泄漏信号。 数字信号处理器产生第一泄漏控制信号和第二泄漏控制信号。 数字信号处理器产生第一泄漏控制信号,直到第一传输泄漏信号的电平变得等于或低于第一参考传输泄漏信号的电平。

    Synchronization method between reader and tag
    79.
    发明授权
    Synchronization method between reader and tag 有权
    阅读器和标签之间的同步方法

    公开(公告)号:US08274374B2

    公开(公告)日:2012-09-25

    申请号:US12265205

    申请日:2008-11-05

    IPC分类号: H04Q5/22 G08B13/14 G04F1/00

    CPC分类号: G06K7/0008

    摘要: Disclosed is a synchronization method between a reader and tag according to an example embodiment, the method including: transmitting, by the reader, a first write command message to the tag at a first time; detecting, by the tag, the first write command message from the reader at a second time and transmitting a first response message to the reader in response to the first write message; transmitting, by the reader, a second write command message including first time information of the first time to the tag; and correcting, by the tag, a clock offset using a difference between the first time and the second time.

    摘要翻译: 公开了根据示例实施例的读取器和标签之间的同步方法,所述方法包括:由读取器在第一时间向标签发送第一写入命令消息; 通过标签在第二时间从读取器检测第一写入命令消息,并响应于第一写入消息向读取器发送第一响应消息; 由读取器发送包含第一次的第一时间信息到标签的第二写入命令消息; 以及使用所述第一时间和所述第二时间之间的差异,通过所述标签来校正时钟偏移。

    System with shared power amplifier for mobile communication terminal with mobile RFID function
    80.
    发明授权
    System with shared power amplifier for mobile communication terminal with mobile RFID function 有权
    具有共享功率放大器的系统,具有移动RFID功能的移动通信终端

    公开(公告)号:US08219141B2

    公开(公告)日:2012-07-10

    申请号:US12299808

    申请日:2007-05-10

    IPC分类号: H04M1/00

    摘要: Provided is a power amplifier sharing system for a mobile communication system having a mobile Radio Frequency Identification (RFID) function, particularly, a power amplifier sharing system that can reduce the power consumption and the size of a circuit in a mobile communication terminal having a mobile RFID function. The system includes a mobile communication transceiver for transmitting/receiving a mobile communication signal; a mobile RFID transceiver for transmitting/receiving a mobile RFID signal; a power amplifier for amplifying a signal; a switch for connecting the mobile communication transceiver and the mobile RFID transceiver to the power amplifier; and a transceiver controller for controlling the switch and the power amplifier.

    摘要翻译: 提供了一种用于具有移动射频识别(RFID)功能的移动通信系统的功率放大器共享系统,特别地,功率放大器共享系统,其能够降低移动通信终端中的电力消耗和电路的尺寸,该移动通信终端具有移动 RFID功能。 该系统包括用于发送/接收移动通信信号的移动通信收发器; 用于发送/接收移动RFID信号的移动RFID收发器; 用于放大信号的功率放大器; 用于将移动通信收发器和移动RFID收发器连接到功率放大器的开关; 以及用于控制开关和功率放大器的收发器控制器。