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    • 71. 发明申请
    • METHOD OF TRANSMISSION OF LARGE DATA AMOUNTS IN SENSOR NETWORK BASED ON MAC
    • 基于MAC传感器网络传输大数据量的方法
    • US20100153808A1
    • 2010-06-17
    • US12611532
    • 2009-11-03
    • Kye-seon LeeNae-soo KimCheol-sig PyoJong-suk Chae
    • Kye-seon LeeNae-soo KimCheol-sig PyoJong-suk Chae
    • H04L1/18G06F11/14
    • H04L1/1628H04L1/0083H04L1/1874
    • A large data transmission method in a sensor network based on a media access control (MAC) is provided. The method includes dividing data to be transferred into a plurality of data segments; generating a plurality of media access control (MAC) segmented data frames by including in each data segment an indication that the data is generated by segmentation and assigning a sequence number to the data segment; transmitting the generated MAC segmented data frames sequentially; receiving a MAC reception failure frame indicating reception failure for a predetermined period of time from a receiving sensor node after completing the transmitting of all the MAC segmented data frames; and retransmitting the MAC segmented data frames which correspond to at least one sequence number included in the received MAC reception failure frame. Accordingly, large data transmission times can be reduced in a MAC for a sensor network.
    • 提供了一种基于媒体访问控制(MAC)的传感器网络中的大数据传输方法。 该方法包括将要传送的数据划分成多个数据段; 通过在每个数据段中包括通过分割生成数据的指示并将序列号分配给数据段来生成多个媒体访问控制(MAC)分段数据帧; 依次发送生成的MAC分段数据帧; 在完成所有MAC分段数据帧的发送之后,从接收传感器节点接收指示接收到故障的MAC接收失败帧一段预定时间; 并重发与所接收的MAC接收失败帧中包含的至少一个序列号对应的MAC分段数据帧。 因此,传感器网络的MAC可以减少大的数据传输时间。
    • 72. 发明申请
    • APPARATUS AND METHOD OF TRANSMITTING AND RECEIVING WAKE-UP SIGNAL
    • 发送和接收唤醒信号的装置和方法
    • US20100150042A1
    • 2010-06-17
    • US12613802
    • 2009-11-06
    • Cheon In OhHo Yong KangKyo Hoon SonNae Soo Kim
    • Cheon In OhHo Yong KangKyo Hoon SonNae Soo Kim
    • H04W52/02
    • H04W52/0235Y02D70/00
    • Provided are an apparatus and method of transmitting and receiving a wake-up signal. The method of receiving a wake-up signal includes the following: operating a radio frequency (RF) receiving unit that receives a wireless signal through an antenna during an SFD detecting time, wherein the SFD detecting time is shorter than a predetermined SFD detecting time period, according to the predetermined SFD detecting time period and detecting a start of frame delimiter (SFD) to indicate that the received wireless signal is a wake-up signal to wake-up a node in a sleep mode; and detecting the wake-up signal by continuously operating the RF receiving unit when the SFD is detected. Power consumption that is used to receive the wake-up signal can be reduced.
    • 提供了发送和接收唤醒信号的装置和方法。 接收唤醒信号的方法包括以下步骤:操作在SFD检测时间期间通过天线接收无线信号的射频(RF)接收单元,其中SFD检测时间短于预定的SFD检测时间段 根据预定的SFD检测时间周期,检测帧定界符(SFD)的开始,以指示所接收的无线信号是唤醒睡眠模式中的节点的唤醒信号; 以及当检测到SFD时通过连续操作RF接收单元来检测唤醒信号。 可以减少用于接收唤醒信号的功耗。
    • 73. 发明授权
    • Apparatus and method for decoding turbo TCM using coset mapping
    • 使用陪集映射对turbo TCM进行解码的装置和方法
    • US07613103B2
    • 2009-11-03
    • US10934000
    • 2004-09-03
    • Eun-A ChoiNae-Soo KimJi-Won Jung
    • Eun-A ChoiNae-Soo KimJi-Won Jung
    • H04J11/00
    • H04L1/005H04L1/006H04L1/0066H04L1/0071H04L27/186
    • A turbo TCM decoder for performing a soft decision without performing a sector phase quantization is disclosed. The turbo TCM decoder includes: a symbol transformer for converting a received signal to signal bits of QPSK mode by using an I-axis coordinate and a Q-axis coordinate on a constellation of the received signal; a phase sector quantizer for performing a phase sector quantization or the received signal by using the I-axis coordinate and the Q-axis coordinate; a first decoder for determining coded data by decoding the converted signal bits; a delay for delaying the quantized signal; and a second decoder for determining un-coded data by using the delayed quantized signal and the determined coded data.
    • 公开了一种用于在不执行扇区相位量化的情况下执行软判决的turbo TCM解码器。 涡轮TCM解码器包括:符号变换器,用于通过使用接收信号的星座上的I轴坐标和Q轴坐标将接收信号转换为QPSK模式的信号位; 相位扇区量化器,用于通过使用I轴坐标和Q轴坐标来执行相位扇区量化或接收信号; 第一解码器,用于通过解码转换的信号位来确定编码数据; 用于延迟量化信号的延迟; 以及第二解码器,用于通过使用延迟量化信号和所确定的编码数据来确定未编码数据。
    • 76. 发明申请
    • Method of transmitting/receiving data in sensor network for reducing overhearing of sensor nodes
    • 传感器网络中传输/接收数据的方法,以减少传感器节点的检测
    • US20090103437A1
    • 2009-04-23
    • US12149255
    • 2008-04-29
    • Se Han KimKyeseon LeeChong-Ho YoonGang-Ho ByunNae-Soo KimCheol Sig Pyo
    • Se Han KimKyeseon LeeChong-Ho YoonGang-Ho ByunNae-Soo KimCheol Sig Pyo
    • G01R31/08
    • H04W74/0808H04L7/041H04W52/0216H04W74/002Y02D70/166
    • Provided is a method of transmitting/receiving data in a sensor node for reducing overhearing of sensor nodes, and a sensor network which implements the method. A sender node having transmission data from among a plurality of nodes which perform a low power listening (LPL) operation in an asynchronous manner at predetermined time intervals, generates a long preamble including short preambles, each having information including a destination address of the transmission data, a remainder of the long preamble, and a length of the transmission data, and sequentially transmits the second preamble and the transmission data. A receiver node from among the plurality of nodes determines whether a valid signal is sensed during an active state in the LPL operation. If it is determined that the valid signal is sensed, the receiver node receives the short preamble transmitted from the sender node. The receiver node determines a duration time of a deactivated state of the receiver node based on the received first preamble, thereby reducing overhearing in the sensor network.
    • 提供了一种在传感器节点中发送/接收数据以减少传感器节点的窃听的方法,以及实现该方法的传感器网络。 具有以预定时间间隔以异步方式执行低功率监听(LPL)操作的多个节点的发送数据的发送方节点生成包括短前导码的长前导码,每个具有包含发送数据的目的地地址的信息 ,长前导码的剩余部分和发送数据的长度,并顺序发送第二前同步码和发送数据。 多个节点中的接收器节点确定在LPL操作中的活动状态期间是否感测到有效信号。 如果确定感测到有效信号,则接收器节点接收从发送器节点发送的短前置码。 接收机节点基于接收到的第一前导码来确定接收机节点的去激活状态的持续时间,从而减少传感器网络中的窃听。
    • 77. 发明申请
    • USN SYSTEM USING MULTI-CHANNEL HAVING DIFFERENTIAL RADIO POWER AND METHOD OF CONFIGURING THE SYSTEM
    • 使用具有差分无线电功率的多通道的USN系统和配置系统的方法
    • US20080136708A1
    • 2008-06-12
    • US11932968
    • 2007-10-31
    • Se Han KimJi Eun KimNae Soo KimCheol Sig Pyo
    • Se Han KimJi Eun KimNae Soo KimCheol Sig Pyo
    • H04B7/00H04L12/56
    • H04W52/16H04W52/325H04W74/08H04W84/18
    • A Ubiquitous Sensor Network (USN) system using multi-channel having differential radio power and a method of configuring the USN system are provided. The USN system and the method include a sink node performing a communication with a sensor node using at least one or more frequency signal having differential outputs; and a sensor node performing the communication with the sink node using the at least one or more frequency signal. The USN system and the method simultaneously use a control frequency signal having a high output power and a data frequency signal having an output power lower than that of the control frequency signal, thereby reducing a beacon transmission delay, enabling time synchronization between the sensor nodes, and preventing collisions between beacons due to beacon relays among the sensor nodes, so as to configure a more efficient sensor field.
    • 提供了使用具有差分无线电功率的多信道的无处不在的传感器网络(USN)系统和配置USN系统的方法。 USN系统和方法包括使用具有差分输出的至少一个或多个频率信号执行与传感器节点的通信的汇聚节点; 以及传感器节点,使用所述至少一个或多个频率信号来执行与所述汇聚节点的通信。 USN系统和该方法同时使用具有高输出功率的控制频率信号和具有低于控制频率信号的输出功率的输出功率的数据频率信号,从而减少信标传输延迟,从而实现传感器节点之间的时间同步, 并且防止由于传感器节点之间的信标中继引起的信标之间的冲突,以便配置更有效的传感器场。
    • 79. 发明申请
    • IMPEDANCE MATCHING DEVICE OF SENSOR NODE AND IMPEDANCE MATCHING METHOD OF SENSOR NODE
    • 传感器节点的阻抗匹配装置和传感器节点的阻抗匹配方法
    • US20080136548A1
    • 2008-06-12
    • US11860388
    • 2007-09-24
    • Juderk PARKNae-soo KimCheol Sig Pyo
    • Juderk PARKNae-soo KimCheol Sig Pyo
    • H03H7/38
    • H03H7/40
    • Provided are an impedance matching device of a sensor node and an impedance matching method of a sensor node. The impedance matching device comprises: a variable impedance matching unit disposed between a transmission unit, which is used for modulating a received signal to a radio frequency (RF) signal and outputting the RF signal, and an antenna and including a plurality of impedance matching circuits which have different impedance values from each other; a signal intensity measuring unit which measures the intensity of an output signal that is output through the variable impedance matching unit; and a control unit which controls one of the impedance matching circuits of the variable impedance matching unit to have an impedance value that maximizes the intensity of the output signal. Accordingly, impedance between the transmission unit and the antenna of the sensor node is adjusted when the impedance varies due to the environment in which the sensor node is used, and thus the transmission efficiency of the sensor node is improved. Consequently, a limited power source of the sensor node can be used for a longer duration, the sensor node can be connected to other sensor nodes more successfully, and the communication reliability of the sensor node can be secured.
    • 提供传感器节点的阻抗匹配装置和传感器节点的阻抗匹配方法。 阻抗匹配装置包括:可变阻抗匹配单元,设置在用于将接收信号调制到射频(RF)信号并输出​​RF信号的传输单元之间,以及包括多个阻抗匹配电路的天线 它们彼此具有不同的阻抗值; 信号强度测量单元,其测量通过可变阻抗匹配单元输出的输出信号的强度; 以及控制单元,其控制可变阻抗匹配单元的阻抗匹配电路之一以具有使输出信号的强度最大化的阻抗值。 因此,当阻抗由于使用传感器节点的环境而变化时,传感器节点的传输单元和天线之间的阻抗被调整,因此提高了传感器节点的传输效率。 因此,传感器节点的有限电源可以使用更长的时间,传感器节点可以更成功地连接到其他传感器节点,并且可以确保传感器节点的通信可靠性。