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公开(公告)号：KR1020090043424A
公开(公告)日：2009-05-06
申请号：KR1020080047739
申请日：2008-05-22
Applicant: 한국전자통신연구원
CPC classification number: H04W72/0446 , G06K17/0006 , H04B7/2612
Abstract: 본 발명은 밀집 리더 환경에서 리더 매체 접근 방법 및 그 방법을 적용하는 리더를 개시한다.
본 발명에 따른 리더 매체 접근 방법은 리더와 태그 사이의 에어 타임을 시간 슬롯으로 나누고 각 슬롯에서 LBT 방식으로 동작하고 여러 개의 슬롯은 다시 프레임을 구성하는 것을 특징으로 한다.
따라서 다수 개 리더 간의 채널 스케줄링을 통하여 리더를 제어하고 효율적으로 태그를 식별할 수 있다.
RFID, 밀집리더, 매체 접근, 동기화, RSSI 패턴-
公开(公告)号：KR1020090037797A
公开(公告)日：2009-04-16
申请号：KR1020080078119
申请日：2008-08-08
Applicant: 한국전자통신연구원
CPC classification number: H04W74/0833 , G06K7/0008 , G06K7/10475 , H04W72/0413 , H04W72/042 , H04W72/0446 , H04W72/082 , H04W74/006
Abstract: A method and a mobile RFID reader which controls TDMA of a mobile RFID reader through a mobile base station are provided to prevent interference between readers by occupying a channel during a time slot and frequency allocated in the mobile RFID reader. A mobile RFID(Radio Frequency Identification) reader requests a channel for RFID communications with a tag as a base station through the uplink channel according to the protocol of the mobile network(S610). The base station assigns the channel information of the transmission channel and transmit window to the mobile RFID reader through the downlink channel according to the protocol of the mobile network(S630). The mobile RFID reader performs the tag selected according to the channel information in the allocated frequency channel for the designated time slot(S650). The mobile RFID reader transmits the history information collected for the inventory round to the base station after the inventory round termination(S670).
Abstract translation: 提供了通过移动基站控制移动RFID读取器的TDMA的方法和移动RFID读取器，以通过在移动RFID读取器中分配的时隙和频率期间占用信道来防止读取器之间的干扰。 移动RFID（射频识别）读取器根据移动网络的协议，通过上行链路信道请求与标签进行RFID通信的信道作为基站（S610）。 基站根据移动网络的协议通过下行链路信道将传输信道的信道信息和发送窗口分配给移动RFID读取器（S630）。 移动RFID读取器根据指定时隙的分配频道中的信道信息执行选择的标签（S650）。 移动RFID读取器在盘点终止之后向基站发送用于库存回收的历史信息（S670）。
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公开(公告)号：KR1020080097017A
公开(公告)日：2008-11-04
申请号：KR1020070042077
申请日：2007-04-30
Applicant: 한국전자통신연구원
Abstract: A method for allocating a channel in ad-hoc network and an apparatus therefore are provided to prevent collision of beacon on network and allocate a channel in which collision is minimized whenever a new node is connected on ad-hoc network. Level information of the link sequence information to a second node which is the parent node of the first node in ad-hoc network is acquired. The standard value for the channel setup is determined by using an address and the level value of the first node based on the linked sequential information and level information. The standard value is divided into the number of maximum available channels on network and the channel value of the first node is determined(406). In case of determining the standard value for channel setup, a value summing the level information and linked sequential information and a value multiplying the address value of the first node and level value are determined as a standard value.
Abstract translation: 因此，提供了一种在自组织网络中分配信道的方法和装置，以防止网络上的信标的冲突，并且在每个新节点连接在自组织网络上时分配其中冲突最小的信道。 获取作为ad-hoc网络中的第一节点的父节点的第二节点的链接序列信息的级别信息。 基于链接的顺序信息和级别信息，通过使用地址和第一节点的级别值来确定信道建立的标准值。 标准值被划分为网络上最大可用信道的数量，并确定第一个节点的信道值（406）。 在确定信道建立的标准值的情况下，将等级信息和链接的顺序信息相加的值和将第一节点的地址值和电平值相乘的值被确定为标准值。
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公开(公告)号：KR1020080084548A
公开(公告)日：2008-09-19
申请号：KR1020070123645
申请日：2007-11-30
Applicant: 한국전자통신연구원
CPC classification number: H04Q9/00 , G06K19/0717 , G06K19/07749 , H04Q2209/47 , H04Q2209/75 , H04Q2209/823
Abstract: A device and a method for transmitting a sensor status in an RFID(Radio Frequency IDentification) tag are provided to remove additional communication between an RFID reader and the RFID tag by transmitting sensor data and/or status information of each sensor embedded in the RFID tag in addition to a tag ID of the RFID tag. More than one sensor(151) detects and measures physical change of an external environment. A memory(157) stores measured sensor data and status information of each sensor. A message generator(159) generates a response message including a tag ID, and at least one of a status record and data formed based on sensor status information. A controller(155) generates a signal for controlling measurement operation of the sensors and forming the status record. The status record is formed by status information of all or predetermined sensors depending on a request of an RFID reader(100). The status record includes at least one of the number of sensors, an internal port number of the sensor, sensor monitoring activation, sensor alarm function activation, alarm generation/condition, time stamp storage, a scheduling mode, sensor property, and error information.
Abstract translation: 提供了一种用于在RFID（射频识别）标签中传送传感器状态的装置和方法，用于通过传送嵌入在RFID标签中的每个传感器的传感器数据和/或状态信息来消除RFID读取器与RFID标签之间的附加通信 除了RFID标签的标签ID之外。 多个传感器（151）检测和测量外部环境的物理变化。 存储器（157）存储测量的传感器数据和每个传感器的状态信息。 消息生成器（159）生成包括标签ID的响应消息以及基于传感器状态信息形成的状态记录和数据中的至少一个。 控制器（155）产生用于控制传感器的测量操作并形成状态记录的信号。 根据RFID读取器（100）的请求，状态记录由全部或预定传感器的状态信息形成。 状态记录包括传感器数量，传感器的内部端口号，传感器监控激活，传感器报警功能激活，报警生成/条件，时间戳存储，调度模式，传感器属性和错误信息中的至少一个。
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公开(公告)号：KR1020080053195A
公开(公告)日：2008-06-12
申请号：KR1020070123646
申请日：2007-11-30
Applicant: 한국전자통신연구원
CPC classification number: G06K7/0008 , G06K19/0705 , G06K19/0723
Abstract: An apparatus and a method for generating a wake-up signal of a passive tag having a battery are provided to adjust a life span of a battery or a tag by generating a wake-up signal which operates the battery in response to a signal of an RFID(Radio Frequency Identifier) reader. An apparatus for generating a wake-up signal of a passive tag having a battery includes a signal detection unit(200), and a control unit(250). The signal detection unit generates a wake-up signal if an input signal is an activation command signal by measuring a holding time between pulses or a period of the pulse based on a coding mechanism of the input signal of an RFID reader. The control unit activates a power supply function of the battery by the wake-up signal. The signal detection unit has a first signal detection unit(210) and a second signal detection unit(237). If the preamble of the input signal has a specific data value, the first signal detection unit determines whether the input signal is the activation command signal, and generates an activation check signal. The second signal detection unit compares an activation mask of the input signal with a previously stored activation code in response to the activation check signal. The second signal detection unit generates the wake-up signal if the activation mask is the same with the activation code.
Abstract translation: 提供一种用于产生具有电池的无源标签的唤醒信号的装置和方法，用于通过产生响应于信号的信号产生操作电池的唤醒信号来调节电池或标签的寿命 RFID（射频识别器）阅读器。 一种用于产生具有电池的无源标签的唤醒信号的装置，包括信号检测单元（200）和控制单元（250）。 如果输入信号是激活命令信号，则信号检测单元通过基于RFID读取器的输入信号的编码机构测量脉冲之间的保持时间或脉冲的周期来产生唤醒信号。 控制单元通过唤醒信号激活电池的电源功能。 信号检测单元具有第一信号检测单元（210）和第二信号检测单元（237）。 如果输入信号的前导码具有特定数据值，则第一信号检测单元确定输入信号是否是激活命令信号，并且产生激活检查信号。 第二信号检测单元响应于激活检查信号将输入信号的激活掩码与先前存储的激活码进行比较。 如果激活掩码与激活码相同，则第二信号检测单元产生唤醒信号。
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Patent Agency Ranking
公开(公告)号：KR1020080053174A
公开(公告)日：2008-06-12
申请号：KR1020070096856
申请日：2007-09-21
Applicant: 한국전자통신연구원
CPC classification number: G06K7/0008 , G06K19/0705 , G06K19/0723
Abstract: An apparatus generating a wake-up signal of a passive tag having a battery is provided to adjust a life span of a battery and a tag by generating a wake-up signal which operating the battery in response to a signal of an RFID(Radio Frequency Identifier) reader. An apparatus generating a wake-up signal of a passive tag having a battery includes a trigger signal generation unit(100), a comparison data generation unit(110), a reference output unit(120), and a comparison unit(130). The trigger signal generation unit generates a trigger signal which represents a specific data value as one of a binary number by measuring a maintenance time between pulses or a period of the pulse based on a coding mechanism of a wake-up preamble signal received from an RFID reader. The comparison data generation unit generates wake-up preamble data based on the signal received from the RFID reader and the signal generated from the trigger signal generation unit. The reference output unit outputs reference wake-up preamble data. The comparison unit activates a power supply function of a battery if the wake-up preamble data outputted from the comparison data generation unit is identical to the reference data of the reference output unit.
Abstract translation: 提供产生具有电池的无源标签的唤醒信号的装置，以通过产生响应于RFID信号来操作电池的唤醒信号来调节电池和标签的使用寿命（射频 识别符）读者。 产生具有电池的无源标签的唤醒信号的装置包括触发信号生成单元（100），比较数据生成单元（110），参考输出单元（120）和比较单元（130）。 触发信号生成部基于从RFID接收到的唤醒前置码信号的编码机构，测定脉冲之间的维持时间或脉冲周期，生成表示特定数据值为二进制数的触发信号 读者。 比较数据生成单元基于从RFID读取器接收的信号和从触发信号生成单元生成的信号生成唤醒前导码数据。 参考输出单元输出参考唤醒前导码数据。 如果从比较数据生成单元输出的唤醒前导码数据与参考输出单元的参考数据相同，则比较单元激活电池的电源功能。
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公开(公告)号：KR100829866B1
公开(公告)日：2008-05-16
申请号：KR1020070069613
申请日：2007-07-11
Applicant: 한국전자통신연구원
CPC classification number: G06K7/0008 , G06K7/10356
Abstract: 1. 청구범위에 기재된 발명이 속한 기술분야
다중 리더를 이용하여 이동하는 다중 태그를 식별하는 방법에 관한 것임.
2. 발명이 해결하고자 하는 기술적 과제
시스템의 인식율 및 인식속도를 향상시키고, 시스템의 처리량를 증가시키며, 이동하는 복수의 태그들을 효율적으로 식별함.
3. 발명의 해결방법의 요지
다수개의 리더 - 상기 다수개의 리더는 각각 동작 순서를 가짐 - 를 이용한, 이동중인 다중 태그 식별 방법에 있어서, 상기 다중 태그를 각각 소정 개수의 태그 그룹으로 그룹핑하는 제1단계; 상기 제1단계에 의해 그룹핑된 소정 개수의 태그 그룹을 상기 다수개의 리더 각각에 할당하는 제2단계; 및 상기 다수개의 리더 각각이 상기 동작 순서에 따라 순차적으로 상기 제2단계에 의해 할당된 태그 그룹의 태그를 식별하는 제3단계를 포함함.
4. 발명의 중요한 용도
RFID 기술이 적용되는 다양한 분야에 이용됨.
RFID, 다중리더, 고속 이동 태그, 태그 식별, 태그 그룹핑-
公开(公告)号：KR1020080041929A
公开(公告)日：2008-05-14
申请号：KR1020060110167
申请日：2006-11-08
Applicant: 한국전자통신연구원
CPC classification number: H04L67/1002 , H04L29/08558 , H04W40/32 , H04W84/18
Abstract: A method for constituting an independent cluster by each sensor node on a sensor network is provided to enable each node to constitute new nodes as a cluster node on the basis of information about a cluster after setting the initial cluster for providing a specific service, thereby automatically and efficiently constituting the cluster with necessary nodes according to a state and the condition of each node. A method for constituting an independent cluster by each sensor node on a sensor network comprises the following steps of: forming a cluster(501); detecting a new sensor node in a range of the cluster(502); requesting an authority key value which the sensor node has previously obtained(503); transferring a corresponding cluster membership if the authority key value is satisfied(504); transmitting a cluster program with the cluster membership(505); and upgrading the program of the sensor node(506).
Abstract translation: 提供了一种用于在传感器网络上由每个传感器节点构成独立簇的方法，以便在设置用于提供特定服务的初始集群之后，基于关于集群的信息，使每个节点构成新节点作为集群节点，从而自动地 并根据每个节点的状态和状况有效地构成具有所需节点的集群。 一种用于由传感器网络上的每个传感器节点构成独立簇的方法包括以下步骤：形成簇（501）; 检测所述集群（502）的范围内的新传感器节点; 请求传感器节点先前获得的授权密钥值（503）; 如果所述权限密钥值被满足则传送相应的集群成员资格（504）; 发送具有集群成员资格的集群程序（505）; 并升级传感器节点（506）的程序。
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公开(公告)号：KR1020080010343A
公开(公告)日：2008-01-30
申请号：KR1020070074680
申请日：2007-07-25
Applicant: 한국전자통신연구원
CPC classification number: H04B5/0062 , G06K7/0008 , G06K7/10198 , G06K7/10237 , G06K19/0723
Abstract: A reader/tag integrated RFID(Radio Frequency IDentification) device and a method thereof are provided to reduce a system size and increase portability by performing a reader and tag function without inter-collision. A tag unit(103) transmits a response signal and data responding to a signal received from an external reader by communicating with the external reader. A reader unit(105) communicates with an external tag by using a random value, which is selected to minimize the inter-collision by selecting a channel with a different delay time between other reader and the reader/tag integrated RFID device. A controller(101) activates the reader or tag unit selectively, and controls the activated unit. The reader unit includes a random value generator(233) generating the random value for selecting the channel with the delay time different from other readers, a collision arbiter(238), a reader transmitter(234) generating/transmitting a reader command message determined by the collision arbiter, a reader receiver(235), and a channel operation controller.
Abstract translation: 提供了一种读写器集成RFID（射频识别）装置及其方法，通过执行读取器和标签功能而不产生碰撞，来减小系统尺寸并提高便携性。 标签单元（103）通过与外部读取器通信来发送响应于从外部读取器接收到的信号的响应信号和数据。 读取器单元（105）通过使用随机值与随机值进行通信，所述随机值被选择以通过在其它读取器与读取器/标签集成RFID设备之间选择具有不同延迟时间的通道来最小化碰撞。 控制器（101）有选择地激活读取器或标签单元，并控制被激活的单元。 读取器单元包括随机值生成器（233），其生成用于选择具有与其他读取器不同的延迟时间的信道的随机值，冲突仲裁器（238），生成/发送读取器命令消息的读取器发送器（234），其由 碰撞仲裁器，读取器接收器（235）和通道操作控制器。
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公开(公告)号：KR100797398B1
公开(公告)日：2008-01-28
申请号：KR1020050035741
申请日：2005-04-28
Applicant: 한국전자통신연구원
Abstract: 본 발명은 CPW(Co-Planar Waveguide) 급전 구조를 갖는, 금속 표면에 부착 가능한 PIFA 안테나 및 이를 이용한 RFID 태그에 관한 것이다.
본 발명은 PIFA(Planar Inverted-F Antenna) 안테나로서, 유전체층의 일면에 형성된 방사 패치층, CPW(Co-Planar Waveguide) 급전층, 급전 프로브, 단락부를 포함한다. CPW 급전층은 상기 유전체층의 타면에 형성된 급전부와, 상기 급전부와 이격된 접지면으로 이루어진다. 급전 프로브는 상기 유전체층을 관통하여 상기 방사 패치층과 상기 급전부를 전기적으로 연결하며, 상기 방사 패치층에 방사할 RF 신호를 제공한다. 단락부는 상기 유전체층을 관통하여 상기 방사 패치층과 상기 접지면을 단락한다.
본 발명은 CPW 급전 구조에 의해 RFID 칩의 부착이 용이하여 수동형 RFID 태그에 적용가능하다. 또한, 본 발명은 RFID 칩을 CPW 급전층에 부착하는 위치를 조절함으로써 안테나와 RFID 칩간의 임피던스 정합이 가능하다. 또한, 본 발명은 안테나의 공진 주파수와 리액턴스를 용이하게 조절할 수 있는 효과를 제공한다.
PIFA(Planar Inverted-F Antenna), RFID, 금속 부착, 안테나
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