公开(公告)号：US07697458B2

公开(公告)日：2010-04-13

申请号：US11759450

申请日：2007-06-07

Applicant: Jongjun Park ,  Jong Oh Lee ,  Sun Joong Kim ,  Cheol Sig Pyo ,  Jong Suk Chae

Inventor： Jongjun Park ,  Jong Oh Lee ,  Sun Joong Kim ,  Cheol Sig Pyo ,  Jong Suk Chae

IPC: H04L12/16

CPC classification number: H04W64/00 ,  H04W4/08 ,  H04W48/16 ,  H04W84/18

Abstract: A node for self localization, a clustering method using the same, and a localization method are provided. The node, which is located in a specific space so as to constitute a sensor network, includes a location information messaging unit which receives one or more location information messages including information on spatial locations of one or more neighboring nodes in the sensor network from the neighboring nodes in the sensor network; a distance calculator which calculates a first distance to the neighboring node on the basis of the location information included in the received location information messages and calculates a second distance to one or more neighboring nodes on the basis of the received time or intensity of the message on the location information; and a clustering unit which forms clusters of the node and a plurality of neighboring nodes in which the difference between the first and second distances is less than a predetermined threshold.

Abstract translation: 提供了一种用于自定位的节点，使用该节点的聚类方法和定位方法。 位于特定空间中以构成传感器网络的节点包括位置信息消息单元，其接收一个或多个位置信息消息，其包括关于传感器网络中的一个或多个相邻节点的空间位置的信息 传感器网络中的节点; 距离计算器，其基于包括在接收的位置信息消息中的位置信息计算到相邻节点的第一距离，并基于所接收的消息的时间或强度计算到一个或多个相邻节点的第二距离 位置信息; 以及聚集单元，其形成所述节点的簇和多个相邻节点，其中所述第一和第二距离之间的差小于预定阈值。

公开(公告)号：US20100074157A1

公开(公告)日：2010-03-25

申请号：US12516710

申请日：2007-12-05

Applicant: Yoonmee Doh ,  Yao Zhiying ,  Noseong Park ,  Sun-Joong Kim ,  Cheol Sig Pyo

Inventor： Yoonmee Doh ,  Yao Zhiying ,  Noseong Park ,  Sun-Joong Kim ,  Cheol Sig Pyo

IPC: G08C17/00 ,  H04L12/28

CPC classification number: H04W84/18 ,  H04W52/0219 ,  Y02D70/142 ,  Y02D70/144

Abstract: A sensor node of a wireless sensor network includes a first sensor node module for generating and processing, when it is activated, a first sensing signal to detect occurrence of an event based on the first sensing signal; and a second sensor node module for generating and processing a second sensing signal, when it is activated, to monitor state transition of the event based on the second sensing signal. Further, when the occurrence of the event is detected, the first sensor node module is inactivated and the second sensor node module is activated.

Abstract translation: 无线传感器网络的传感器节点包括第一传感器节点模块，用于当其被激活时产生和处理第一感测信号，以基于第一感测信号检测事件的发生; 以及第二传感器节点模块，用于当其被激活时产生和处理第二感测信号，以基于第二感测信号监视事件的状态转变。 此外，当检测到事件的发生时，第一传感器节点模块被去激活，并且第二传感器节点模块被激活。

公开(公告)号：US20090238296A1

公开(公告)日：2009-09-24

申请号：US12479424

申请日：2009-06-05

Applicant: Kyeongpyo KIM ,  Jin Kyeong KIM ,  Woo Yong LEE ,  Yong Sun KIM ,  Nae-Soo KIM ,  Cheol Sig PYO

Inventor： Kyeongpyo KIM ,  Jin Kyeong KIM ,  Woo Yong LEE ,  Yong Sun KIM ,  Nae-Soo KIM ,  Cheol Sig PYO

IPC: H04K1/10 ,  H04L27/06

CPC classification number: H04W72/1252 ,  H04W74/08 ,  H04W84/12

Abstract: A control apparatus for use in wireless communications includes an antenna unit having antennas, the number of the antennas being equal to a maximum allowable number of connections in a specific frequency band; and a controller for receiving a connection request signal from each terminal attempting to connect to the control apparatus via the antenna unit, and transmitting and receiving a data signal to and from each terminal connected to the control apparatus by using a multiple-input-multiple-output scheme. The controller transmit and receive the data signal to and from each terminal connected to the control apparatus by obtaining a signal value of each antenna based on a predicted channel matrix and the number and types of terminals connected to the control apparatus via the antenna and separating the data signal for each terminal from the signal value according to the multiple-input-multiple-output scheme.

Abstract translation: 用于无线通信的控制装置包括具有天线的天线单元，天线的数量等于特定频带中的最大允许连接数; 以及控制器，用于从每个终端接收尝试经由天线单元连接到控制装置的连接请求信号，并且通过使用多输入多重连接方式向连接到控制装置的每个终端发送数据信号和从每个终端接收数据信号， 输出方案。 控制器通过基于预测的信道矩阵以及通过天线连接到控制装置的终端的数量和类型获得每个天线的信号值来向连接到控制装置的每个终端发送数据信号并从每个终端接收数据信号， 根据多输入多输出方案从信号值得到每个终端的数据信号。

公开(公告)号：US20090122733A1

公开(公告)日：2009-05-14

申请号：US12153893

申请日：2008-05-27

Applicant: Jae Hong Ruy ,  Jong Suk Chae ,  Cheol Sig Pyo ,  Bong Soo Kim ,  Dong Wong Kim

Inventor： Jae Hong Ruy ,  Jong Suk Chae ,  Cheol Sig Pyo ,  Bong Soo Kim ,  Dong Wong Kim

IPC: H04L12/56

CPC classification number: H04W72/02 ,  H04W48/12 ,  H04W84/20

Abstract: Provided are a coordinator in a wireless sensor network (WSN) which can improve transmission performance and prevent data loss, and a method of operating the coordinator. The method includes: scanning a transmitted beacon and storing information on a channel included in the beacon; when it is determined that a home channel communicating with a parent node is in an inactive mode on the basis of the information on the channel, in synchronization with the activation of another channel of the same hierarchical level as that of the home channel, activating a home channel communicating with a child node and communicating with the child node; and communicating with the child node through an auxiliary channel that has a frequency band different from those of the home channel communicating with the child node and home channels of other nodes and is always in an active mode.

Abstract translation: 提供了可以提高传输性能并防止数据丢失的无线传感器网络（WSN）中的协调器，以及操作协调器的方法。 该方法包括：扫描发送的信标并将信息存储在信标中包括的信道上; 当确定与父节点通信的归属信道基于信道上的信息处于非活动模式时，与激活与归属信道相同等级的另一信道同步，激活 家庭频道与子节点通信并与子节点通信; 并且通过辅助信道与子节点进行通信，所述辅助信道具有与其他节点的子节点和家庭信道通信的归属信道的频带不同的频带，并且始终处于活动模式。

公开(公告)号：US07505008B2

公开(公告)日：2009-03-17

申请号：US11526374

申请日：2006-09-25

Applicant: Chan-Soo Shin ,  Won-Kyu Choi ,  Hae-Won Son ,  Gil-Young Choi ,  Cheol-Sig Pyo ,  Jong-Suk Chae ,  Han-Phil Rhyu ,  Sung-Jun Heo ,  Byung-Je Lee

Inventor： Chan-Soo Shin ,  Won-Kyu Choi ,  Hae-Won Son ,  Gil-Young Choi ,  Cheol-Sig Pyo ,  Jong-Suk Chae ,  Han-Phil Rhyu ,  Sung-Jun Heo ,  Byung-Je Lee

IPC: H01Q11/12

CPC classification number: H01Q11/18 ,  H01Q9/36 ,  H01Q9/40

Abstract: Provided is an antenna for a Radio Frequency Identification (RFID) reader using an electrical loop. It includes an upper metal plate which functions as a radiator; a lower metal plate which is disposed apart from the upper metal plate by a predetermined distance and functions as a radiator; a ground plate disposed apart from the lower metal plate by a predetermined distance; and a feeding probe disposed at the center of the upper and lower metal plates. The antenna can perform radiation parallel to the earth's surface including other directions. Therefore, it is suitable for an RFID reader which recognizes an RFID tag attached in parallel to the earth's surface. The electrical loop antenna can control impedance matching, resonance frequency, antenna gain, and radiation pattern according to the distance between metal plates, size of the metal plates, thickness of a feeding probe, and how the metal plates are arranged.

Abstract translation: 提供了一种使用电气回路的射频识别（RFID）读取器的天线。 它包括用作散热器的上金属板; 下金属板，其与上金属板隔开预定距离设置并用作散热器; 接地板，与所述下金属板隔开预定距离; 以及设置在上下金属板的中心的供给探针。 天线可以执行与地球表面平行的辐射，包括其他方向。 因此，它适用于识别与地球表面平行附接的RFID标签的RFID读取器。 电气环路天线可以根据金属板之间的距离，金属板的尺寸，馈电探针的厚度以及金属板的布置方式，来控制阻抗匹配，谐振频率，天线增益和辐射图。

公开(公告)号：US20090058612A1

公开(公告)日：2009-03-05

申请号：US12039476

申请日：2008-02-28

Applicant: Byunghyun CHUNG ,  Hee Sook MO ,  Nae-Soo KIM ,  Cheol Sig PYO

Inventor： Byunghyun CHUNG ,  Hee Sook MO ,  Nae-Soo KIM ,  Cheol Sig PYO

IPC: H04Q5/22 ,  H04Q5/00

CPC classification number: G06K7/0008 ,  G06K7/10069 ,  G06K7/10356 ,  H04Q2213/13095

Abstract: Provided are a method and an apparatus for avoiding a collision between each of radio frequency identification (RFID) readers. The method and the apparatus divide the RFID readers into first RFID readers and second RFID readers according to a maximum output level, and set first frequency channels for the first RFID readers and second frequency channels for the second RFID readers, set frequency channel disposition information for each of the first RFID readers, generate a channel holding signal in each of the first frequency channels, and if a frequency channel usage request or a frequency channel return request is received from one of the first RFID readers, stop generating or generate the channel holding signal in a frequency channel related to the frequency channel usage or return request. In this manner, the collision between each of the RFID readers is avoided by preventing the second RFID readers from using the first frequency channels for the first RFID readers. Also, the method and the apparatus can efficiently manage frequency channels by controlling a ratio of the number of the first frequency channels to be used by the first RFID readers and the number of the second frequency channels to be used by the second RFID readers, according to usage frequency.

Abstract translation: 提供了一种用于避免每个射频识别（RFID）读取器之间的冲突的方法和装置。 该方法和设备根据最大输出电平将RFID阅读器划分为第一RFID阅读器和第二RFID阅读器，并为第一RFID读取器和第二个RFID读取器的第二个频道设置第一个频道，设置频道信息处理信息 每个第一RFID读取器在每个第一频道中产生频道保持信号，并且如果从第一RFID读取器之一接收到频道使用请求或频道返回请求，则停止产生或生成频道保持 在与频道使用或返回请求相关的频道中的信号。 以这种方式，通过防止第二RFID读取器对第一RFID读取器使用第一频率信道来避免每个RFID读取器之间的冲突。 此外，该方法和装置可以通过控制由第一RFID读取器使用的第一频道的数量与第二RFID读取器使用的第二频道的数量的比率来有效地管理频道，根据 到使用频率。

公开(公告)号：US20080316104A1

公开(公告)日：2008-12-25

申请号：US12096780

申请日：2006-12-08

Applicant: Nak-Seon Seong ,  Choon-Sik Lim ,  Cheol-Sig Pyo ,  Jong-Suk Chae

Inventor： Nak-Seon Seong ,  Choon-Sik Lim ,  Cheol-Sig Pyo ,  Jong-Suk Chae

IPC: H04B7/24

CPC classification number: G01S5/10

Abstract: Provided is an apparatus and method for computing the location of a radio beacon by using received signal strength (RSS) and multiple frequencies. The apparatus and method of the present invention computes the location of a radio beacon without limitation in distance by using multiple frequencies and received signal strength to resolve the problem of phase ambiguity. A radio beacon location computing system includes a plurality of base stations configured to receive signals of multiple frequencies transmitted from the radio beacon, and detect and output phase differences and received signal strength; and a location computing server configured to receive the phase differences and the received signal strength outputted from the respective base stations, acquire calculation distances based on the phase differences, remove phase ambiguity from the calculation distances based on the received signal strength, and compute the location of the radio beacon.

Abstract translation: 提供了一种通过使用接收信号强度（RSS）和多个频率来计算无线电信标的位置的装置和方法。 本发明的装置和方法通过使用多个频率和接收信号强度来计算无线电信标的位置而不限制距离，以解决相位模糊问题。 无线电信标位置计算系统包括：多个基站，被配置为接收从无线电信标发送的多个频率的信号，并检测和输出相位差和接收信号强度; 以及位置计算服务器，被配置为接收从各个基站输出的相位差和接收信号强度，基于相位差获取计算距离，基于接收到的信号强度从计算距离中消除相位模糊度，并且计算位置 的无线电信标。

公开(公告)号：US20080309428A1

公开(公告)日：2008-12-18

申请号：US12088567

申请日：2005-12-29

Applicant: Hae-Won Son ,  Won-Kyu Choi ,  Chan-Soo Shin ,  Gil-Young Choi ,  Cheol-Sig Pyo

Inventor： Hae-Won Son ,  Won-Kyu Choi ,  Chan-Soo Shin ,  Gil-Young Choi ,  Cheol-Sig Pyo

IPC: H01P5/16

CPC classification number: H01P5/18

Abstract: Provided is an antenna with high isolation. The high-isolation antenna has transmission ports of a transmission radiating body and reception ports of a reception radiating body highly isolated from each other by using a quadrature hybrid coupler. The antenna includes: a transmission radiating body having two feed points for transmitting signals; a reception radiating body having two feed points for receiving signals; a transmission hybrid coupler which is connected to the two feed points of the transmission radiating body and transmits transmission signals which have a phase difference of 90° with each other; and a reception hybrid coupler which is connected to the two feed points of the reception radiating body and receives reception signals which have a phase difference of 90° with each other. The signals leaking from the two feed points of the transmission radiating body to the two feed points of the reception radiating body are offset.

Abstract translation: 提供具有高隔离度的天线。 高隔离天线具有通过使用正交混合耦合器彼此高度隔离的发射辐射体的发送端口和接收辐射体的接收端口。 天线包括：具有用于发送信号的两个馈送点的发射辐射体; 接收辐射体，具有用于接收信号的两个馈送点; 传输混合耦合器，其连接到所述发射辐射体的两个馈电点，并且传输相位差为90°的传输信号; 以及接收混合耦合器，其连接到接收辐射体的两个馈电点，并接收彼此具有90°的相位差的接收信号。 从发送辐射体的两个馈送点泄漏到接收辐射体的两个馈送点的信号被偏移。

公开(公告)号：US07427955B2

公开(公告)日：2008-09-23

申请号：US11297182

申请日：2005-12-07

Applicant: Won-Kyu Choi ,  Nak-Seon Seong ,  Cheol-Sig Pyo ,  Jong-Suk Chae

Inventor： Won-Kyu Choi ,  Nak-Seon Seong ,  Cheol-Sig Pyo ,  Jong-Suk Chae

IPC: H01Q1/38

CPC classification number: H01Q1/2216 ,  H01Q1/22 ,  H01Q9/0421 ,  H01Q21/065 ,  H01Q21/24

Abstract: Provided is a dual polarization antenna realized by using four inverted F-type radiators and a Radio Frequency Identification (RFID) reader employing the dual polarization antenna. The dual polarization antenna includes a ground plate and four inverted F-type radiators set up on the ground plate. Currents of the same phase are fed to the first and second inverted F-type radiators each other. Currents of an inverted phase are fed to the third and fourth inverted F-type radiators each other. The four inverted F-type radiators form an angle of 90° with one another. The first and second inverted F-type radiators radiate electric wave of vertical polarization and the third and fourth inverted F-type radiators radiate electric wave of horizontal polarization. Since the dual polarization antenna has excellent orthogonal and isolation characteristics, the antenna can extend a transmission distance between the reader and the tag and improve a communication quality.

Abstract translation: 提供了通过使用四个反相F型辐射器实现的双极化天线和采用双极化天线的射频识别（RFID）读取器。 双极化天线包括接地板和设置在接地板上的四个倒F型散热器。 相同相位的电流彼此馈送到第一和第二倒置的F型散热器。 反相的电流相互馈送到第三和第四倒置的F型散热器。 四个倒F型散热器彼此形成90°的角度。 第一和第二倒F型辐射器辐射垂直极化电波，第三和第四反相F型辐射器辐射水平极化电波。 由于双极化天线具有优异的正交和隔离特性，所以天线可以扩展读取器和标签之间的传输距离，并提高通信质量。

公开(公告)号：US20080224870A1

公开(公告)日：2008-09-18

申请号：US12023821

申请日：2008-01-31

Applicant: Junho Yeo ,  Josef Preishuber-Pfluegl ,  Alex Janek ,  Andreas Schuhai ,  Hae-Won Son ,  Jae-Young Jung ,  Gil-Young Choi ,  Cheol-Sig Pyo ,  Jong-Suk Chae

Inventor： Junho Yeo ,  Josef Preishuber-Pfluegl ,  Alex Janek ,  Andreas Schuhai ,  Hae-Won Son ,  Jae-Young Jung ,  Gil-Young Choi ,  Cheol-Sig Pyo ,  Jong-Suk Chae

IPC: G08B13/14

CPC classification number: G06K19/0723 ,  G06K19/0701

Abstract: An apparatus and method for managing power of a radio frequency identification (RFID) tag are provided. It is possible for the apparatus for managing the power of the RFID tag to effectively reduce power consumption of the RFID tag by measuring the power strength of a radio frequency (RF) signal received from an RFID reader and adjusting a level of transmission power based on the measured power strength of the signal.

Abstract translation: 提供了一种用于管理射频识别（RFID）标签的功率的装置和方法。 用于管理RFID标签的功率的装置可以通过测量从RFID读取器接收的射频（RF）信号的功率强度来有效地降低RFID标签的功耗，并且基于 测量的信号功率强度。