公开(公告)号：KR1020100068160A

公开(公告)日：2010-06-22

申请号：KR1020090035608

申请日：2009-04-23

Applicant: 한국전자통신연구원

Inventor： 이종오 ,  김내수 ,  표철식

IPC: H04W84/18 ,  H04W28/02 ,  H04L12/28

CPC classification number: H04W28/021 ,  H04W72/0406 ,  H04W74/002 ,  H04W84/18

Abstract: PURPOSE: A method for minimizing bidirectional data transmission delay at wireless sensor network is provided to minimize uplink or downlink data transmission delay at wireless sensor network of beacon based on tree structure responding to IEEE802.15.4-2006 based standard. CONSTITUTION: A beacon frame is received from an upper node(S800). A downlink receiving super frame active section for the downlink for receiving the data from the upper node is allocated according to the received beacon frame(S820). The beacon frame for downlink is transmitted to a lower node(S830). A downlink transmitting super frame active section for the downlink for transmitting data to lower node is allocated(S840).

Abstract translation: 目的：提供一种在无线传感器网络中最小化双向数据传输延迟的方法，以便基于响应IEEE802.15.4-2006标准的树结构，最小化信标无线传感器网络上的上行链路或下行链路数据传输延迟。 构成：从上层节点接收信标帧（S800）。 根据接收到的信标帧，分配用于下行链路用于从上层节点接收数据的下行链路接收超帧活动部分（S820）。 下行链路的信标帧被发送到下层节点（S830）。 分配用于下行链路用于向下层节点发送数据的下行链路发送超帧活动部分（S840）。

公开(公告)号：KR1020100068144A

公开(公告)日：2010-06-22

申请号：KR1020090012598

申请日：2009-02-16

Applicant: 한국전자통신연구원

Inventor： 김지은 ,  강호용 ,  김내수 ,  표철식

IPC: H04B1/40 ,  H04W88/06

CPC classification number: H04B1/0057 ,  H04B1/006 ,  H04B1/40

Abstract: PURPOSE: A short distance wireless transceiver capable of using multiband is provided to normally transmit and receive the multiband signal with sliming size of the wireless transceiver by applying a common antenna capable of transmitting and receiving the multiband signal. CONSTITUTION: An antenna(100) transmits and receives the wireless communication signal of multiband. An RF signal preprocess unit(110) passes through only the signal of the selection band, processes the radio frequency signal received according to the transceiver path set and RF processes the signal to be transmitted. A modulator/demodulator unit(120) modulates/demodulates a transmitted/received signal according to modulation/demodulation method for the short distance wireless communication. A baseband processing unit(130) processes the signal of multiband into bandwidth baseband signal.

Abstract translation: 目的：提供能够使用多频带的短距离无线收发器，通过应用能够发送和接收多频带​​信号的公共天线，正常地发送和接收具有无线收发器的纤薄尺寸的多频带信号。 构成：天线（100）发送并接收多频带​​的无线通信信号。 RF信号预处理单元（110）仅通过选择频带的信号，处理根据收发器路径集接收到的射频信号，RF处理要发送的信号。 调制器/解调器单元（120）根据用于短距离无线通信的调制/解调方法对发送/接收信号进行调制/解调。 基带处理单元（130）将多频带的信号处理为带宽基带信号。

公开(公告)号：KR1020100020220A

公开(公告)日：2010-02-22

申请号：KR1020080078911

申请日：2008-08-12

Applicant: 한국전자통신연구원

Inventor： 이병복 ,  배명남 ,  최병철 ,  이인환 ,  김내수 ,  남상관 ,  류승기

IPC: G06F13/16 ,  G06F13/14

CPC classification number: G06F13/1663

Abstract: PURPOSE: An apparatus and a method for controlling a shared memory, and a method for accessing the shared memory are provided to make an FPGA(Field Programmable Gate Array) to access data of a dedicated memory area through a local bus, thereby assigning priority as an access right to the shared memory. CONSTITUTION: A processor unit(110) processes an application. A user program unit(120) executes a program made by a user. A shared memory unit(130) stores data exchanged between the processor unit and the user program unit. A controller(140) controls connection about the processor unit and a system bus of the user program unit.

Abstract translation: 目的：提供一种用于控制共享存储器的装置和方法以及用于访问共享存储器的方法，以使FPGA（现场可编程门阵列）通过局部总线访问专用存储器区域的数据，从而将优先级分配为 访问共享内存的权限。 构成：处理器单元（110）处理应用程序。 用户程序单元（120）执行用户制作的程序。 共享存储器单元（130）存储在处理器单元和用户程序单元之间交换的数据。 控制器（140）控制关于处理器单元和用户程序单元的系统总线的连接。

公开(公告)号：KR1020100015180A

公开(公告)日：2010-02-12

申请号：KR1020080076115

申请日：2008-08-04

Applicant: 한국전자통신연구원

Inventor： 배명남 ,  이병복 ,  최병철 ,  이인환 ,  김내수

IPC: H04L12/28

CPC classification number: H04L67/34 ,  H04L67/12 ,  H04L67/30 ,  H04L69/30

Abstract: PURPOSE: An open type sensor node and a construction method thereof are provided to miniaturize and simplify the software layer of the sensor node. CONSTITUTION: It is tested whether the physical structure of coping with the logical structure of HAL(Hardware Abstraction Layer) Function and definition mapping exists in the hardware profile(S301). The conversion to the physical structure is operated in the logical structure by referring to the hardware profile(S303). It is determined whether the service exists in the service profile(S305). It the logical structure of the service is not used, the application is created(S309).

Abstract translation: 目的：提供一种开放式传感器节点及其构造方法，以小型化和简化传感器节点的软件层。 构成：测试硬件配置文件中是否存在应对HAL逻辑结构（硬件抽象层）功能和定义映射的物理结构（S301）。 通过参考硬件配置文件（S303），以逻辑结构操作到物理结构的转换。 确定服务是否存在于服务简档中（S305）。 它的服务的逻辑结构不被使用，应用程序被创建（S309）。

公开(公告)号：KR100932926B1

公开(公告)日：2009-12-21

申请号：KR1020070133744

申请日：2007-12-18

Applicant: 한국전자통신연구원

Inventor： 박태준 ,  김세한 ,  김내수 ,  표철식 ,  이재용 ,  김병철

IPC: H04B7/26

CPC classification number: H04W72/02 ,  H04W72/0406 ,  Y02D70/142 ,  Y02D70/166

Abstract: 본 발명은 USN(Ubiquitous Sensor Network) 기반의 MAC에서 다중채널 액세스를 제어하는 장치 및 방법에 관한 것이다. 이를 위해 본 발명의 다중채널액세스제어장치는 송신센서노드에서 데이터채널 중 가용할 수 있는 적어도 하나 이상의 가용채널을 검색하는 채널검색부; 송신센서노드는 컨트롤채널센싱 및 백오프를 통해 상기 컨트롤채널을 선점한 후 프리앰블을 컨트롤 채널에 주기적으로 방송하는 컨트롤채널선점부;및 수신센서노드는 수신한 프리앰블을 기초로 송신센서노드가 가용할 수 있는 가용채널을 파악하고 그 중 수신센서노드에서 가용할 수 있는 채널을 선택하여 그 정보를 송신센서노드에 전송하는 가용채널교환부;를 포함한다.
채널검색, 채널 협상

Abstract translation: 提供了一种用于在基于USN的MAC中控制多信道接入的装置和方法。 多通道访问控制装置包括信道扫描器，控制信道预占方和可用信道交换机。 信道扫描器扫描Tx传感器节点中的N个数据信道中的至少一个或多个可用信道。 控制信道预占在Tx传感器节点中通过控制信道感测和退避来控制控制信道，并且周期性地在控制信道上广播前导码。 可用信道交换机在Rx传感器节点中，根据接收到的前导码检测Tx传感器节点可用的可用信道，在检测到的可用信道中选择可用于Rx传感器节点的信道，并发送关于所选择的信道的信息 通道到Tx传感器节点。

公开(公告)号：KR1020090065252A

公开(公告)日：2009-06-22

申请号：KR1020070132731

申请日：2007-12-17

Applicant: 한국전자통신연구원

Inventor： 박태준 ,  김내수 ,  표철식

IPC: H04L12/28 ,  H04L9/00

Abstract: A method and an apparatus for preprocessing MAC(Media Access Control) hardware are provided to remove a need of separate processing of a processor, thereby improving performance and power efficiency. An encoding preprocessing searcher(1021) successively searches an FCF(Frame Control Field) field, an address field and an aux security field. An encoding information generator(1022) produces encoding input information. A decoding preprocessing searcher(1031) successively searches the FCF field, the address field and the aux security field. A decoding information generator(1032) produces decoding input information.

Abstract translation: 提供了用于预处理MAC（媒体访问控制）硬件的方法和装置，以消除对处理器的单独处理的需要，从而提高性能和功率效率。 编码预处理搜索器（1021）连续搜索FCF（帧控制字段）字段，地址字段和辅助安全字段。 编码信息生成器（1022）生成编码输入信息。 解码预处理搜索器（1031）连续搜索FCF字段，地址字段和辅助安全字段。 解码信息生成器（1032）产生解码输入信息。

公开(公告)号：KR1020090040127A

公开(公告)日：2009-04-23

申请号：KR1020070105756

申请日：2007-10-19

Applicant: 한국전자통신연구원 ,  한국항공대학교산학협력단

Inventor： 이계선 ,  김세한 ,  윤종호 ,  변강호 ,  김내수 ,  표철식

IPC: H04L12/28 ,  H04L12/24

CPC classification number: H04W74/0808 ,  H04W52/0225 ,  H04W84/18 ,  Y02D70/166

Abstract: A media access control device of a medium access control method in a sensor network reducing delay generated between a hop and a sensor node are provided to process data quickly by using a check interval of short length. A first node performs an LPL(Low Power Listening) which is the check interval which is most short among the usable check interval(S510). A first node receiving the downward traffic information determines the check interval by summing the traffic volume which periodically reports to the sink node by summing upward traffic and downward traffic which receives from its own lower nodes(S525). The first node transmits the upward traffic binding update message by using the long preamble of the type '2 fitted to the check interval of the node having the most small traffic(S540).

Abstract translation: 提供传感器网络中的介质访问控制方法的媒体访问控制装置，减少在跳和传感器节点之间产生的延迟，以通过使用短长度的检查间隔来快速处理数据。 第一节点执行作为可用检查间隔中最短的检查间隔的LPL（低功率听力）（S510）。 接收下行业务信息的第一节点通过对通过向上流量求和并从其自己的下级节点接收的向下流量求和周期性地向汇聚节点报告的业务量来确定检查间隔（S525）。 第一节点通过使用适合于具有最小业务量的节点的检查间隔的类型“2”的长前导码来发送上行业务绑定更新消息（S540）。

公开(公告)号：KR1020080052171A

公开(公告)日：2008-06-11

申请号：KR1020070040488

申请日：2007-04-25

Applicant: 한국전자통신연구원

Inventor： 김경표 ,  이우용 ,  김내수 ,  표철식

IPC: H04L7/04 ,  H04L7/02

CPC classification number: H04L7/041 ,  H04L7/02

Abstract: An apparatus and a method for compensating for a frequency using a preamble are provided to improve accuracy of calculation for a frequency offset by delaying a received signal with a parallel structure, calculating a phase difference, and calculating an average value. An apparatus for compensating for a frequency using a preamble comprises a signal delaying part(210,211,212), a phase calculating part(213,215,216), an average calculating part(217,218,219), and an averaging part(220). In the signal delaying part, at least one or more delaying parts delaying a received first signal for a predetermined time and outputting the delayed signal are connected sequentially, and outputs at least one or more second signals having a different delay time, respectively. The phase calculating part obtains each pair of complex numbers of the second signals, performs a predetermined operation between each pair of the complex numbers and the first signal for obtaining phase difference, respectively. The average calculating part calculates an average value of the phase differences for a predetermined time. The averaging part calculates an average value for at least one or more average values of the average calculating part, and outputs the average value as a frequency offset.

Abstract translation: 提供了一种使用前置码补偿频率的装置和方法，以通过使用并行结构延迟接收信号，计算相位差和计算平均值来提高频偏的计算精度。 一种使用前导码补偿频率的装置包括信号延迟部分（210,211,212），相位计算部分（213,215,216），平均计算部分（217,218,219）和平均部分（220）。 在信号延迟部分中，顺序地连接延迟接收的第一信号预定时间并输出延迟信号的至少一个或多个延迟部分，并分别输出具有不同延迟时间的至少一个或多个第二信号。 相位计算部分获得第二信号的每对复数，分别在每对复数之间执行预定的操作和用于获得相位差的第一信号。 平均计算部分计算预定时间的相位差的平均值。 平均部分计算平均计算部分的至少一个或多个平均值的平均值，并将平均值作为频率偏移输出。

公开(公告)号：KR1020080050966A

公开(公告)日：2008-06-10

申请号：KR1020070071267

申请日：2007-07-16

Applicant: 한국전자통신연구원

Inventor： 김세한 ,  김내수 ,  표철식

IPC: H04L12/28

Abstract: A method for extending an operation time of a wireless sensor network is provided to lengthen an operation time of an overall sensor network system for the same power. A preliminary value of a BI(Beacon Interval) is calculated(S501) and compared with a maximum BI(S502). If the preliminary value of the BI is smaller than the maximum BI, a new BI is calculated by adding a value obtained by multiplying a weight value to the maximum BI(S503). In order to inform other nodes about the calculated new BI through a packet, a reserved field of a super-frame specification field is set as 1. If the preliminary value of the BI is larger than the maximum BI, the preliminary value of the BI is used as a new BI(S504).

Abstract translation: 提供了一种用于延长无线传感器网络的操作时间的方法，以延长相同功率的整个传感器网络系统的操作时间。 计算BI（信标间隔）的初始值（S501）并与最大BI进行比较（S502）。 如果BI的初始值小于最大BI，则通过将通过将权重值乘以最大BI获得的值来计算新的BI（S503）。 为了通过分组通知其他节点关于计算出的新BI，将超帧规范字段的保留字段设置为1.如果BI的初始值大于最大BI，则BI的初始值 被用作新的BI（S504）。

公开(公告)号：KR100826919B1

公开(公告)日：2008-05-06

申请号：KR1020060124534

申请日：2006-12-08

Applicant: 한국전자통신연구원

Inventor： 김경표 ,  이우용 ,  김내수 ,  표철식

IPC: H04B7/005 ,  H04L27/01

CPC classification number: H04L27/01 ,  H04L25/0202 ,  H04L2027/0038

Abstract: An equalization device in a wireless communication system and a method therefor are provided to estimate channel gains in a process for receiving training signals, and to update the channel gains as the reception process is progressed, thereby preventing delay of equalization time. A channel estimator(20) continuously updates channel gain estimation values while training signals are inputted to an equalization device, and stores the updated channel gain estimation values in a memory(206). When data signals are inputted to the equalization device, a channel gain updator(22) estimates a phase error and a timing error by extracting pilot signals from the data signals, and updates the channel gain estimation values stored in the memory by using the estimated values.

Abstract translation: 提供了一种无线通信系统中的均衡装置及其方法，用于估计用于接收训练信号的处理中的信道增益，并且在接收处理进行时更新信道增益，从而防止均衡时间的延迟。 信道估计器（20）在训练信号被输入到均衡装置的同时连续更新信道增益估计值，并将更新的信道增益估计值存储在存储器（206）中。 当数据信号被输入到均衡装置时，信道增益更新器（22）通过从数据信号提取导频信号来估计相位误差和定时误差，并且通过使用估计值来更新存储在存储器中的信道增益估计值 。