公开(公告)号：KR1020100033929A

公开(公告)日：2010-03-31

申请号：KR1020090086268

申请日：2009-09-14

Applicant: 한국전자통신연구원

Inventor： 김용선 ,  홍승은 ,  권형진 ,  김경표 ,  이우용

IPC: H04B7/10 ,  H04L29/02

CPC classification number: H04W40/244 ,  H04L67/16 ,  H04W8/005 ,  H04W48/08 ,  H04W48/16

Abstract: PURPOSE: A device for managing device discovery in a wireless system and a method thereof are provided to enable a device to efficiently perform a discovery process and enable multiple devices to perform exact discovery scanning at each sector. CONSTITUTION: A discovery beacon generator(1110) generates a discovery beacon with information of a discovery scanning section. A transmitter(1120) transmits the discovery beacon to a neighbor device. A receiver(1130) receives a response message of the discovery beacon in the discovery scanning section from the neighbor device. The discovery beacon includes device control information.

Abstract translation: 目的：提供用于管理无线系统中的设备发现的设备及其方法，以使得设备能够有效地执行发现过程，并使多个设备能够在每个扇区执行精确的发现扫描。 构成：发现信标发生器（1110）生成具有发现扫描部分的信息的发现信标。 发射机（1120）将发现信标发送到相邻设备。 接收机（1130）从相邻设备接收发现扫描部分中的发现信标的响应消息。 发现信标包括设备控制信息。

公开(公告)号：KR1020100030571A

公开(公告)日：2010-03-18

申请号：KR1020090075656

申请日：2009-08-17

Applicant: 한국전자통신연구원

Inventor： 김경표 ,  김용선 ,  홍승은 ,  권형진 ,  이우용

IPC: H04B7/04

CPC classification number: H04B7/061 ,  H04B7/0619

Abstract: PURPOSE: A transceiving device which switches a transmitting antenna in a transmission antenna multiplexing system and a method thereof are provided to supply a multiplexing gain by transmission antenna switching with lower complexity, thereby improving frequency efficiency. CONSTITUTION: A notice command frame reader(165) confirms whether it is requested to switch a transmission antenna. If the switching of the transmission antenna is requested, an antenna switching unit(115) selects an antenna which is not selected as a transmission antenna. The antenna switching unit switches the selected transmission antenna.

Abstract translation: 目的：提供一种在发送天线多路复用系统中切换发送天线的收发装置及其方法，以便以较低的复杂度通过发送天线切换提供复用增益，从而提高频率效率。 构成：通知命令帧读取器（165）确认是否请求切换发送天线。 如果要求发送天线的切换，则天线切换单元（115）选择未被选择为发送天线的天线。 天线切换单元切换所选择的发射天线。

公开(公告)号：KR1020100007691A

公开(公告)日：2010-01-22

申请号：KR1020090013777

申请日：2009-02-19

Applicant: 한국전자통신연구원

Inventor： 권형진 ,  김용선 ,  김경표 ,  홍승은 ,  이우용

IPC: H04L12/28 ,  H04W80/02

CPC classification number: H04W88/04 ,  H04W40/12 ,  H04W80/02

Abstract: PURPOSE: A data transceiving apparatus and method using a relay device in a wireless communications system based on centralized control type MAC(Media Access Control) are provided to transmit and receive smoothly data by using a relay path through the relay device even in case the condition of a channel is not good, or a direct path on LOS(Line of Sight) between devices is cut off. CONSTITUTION: The channel condition of a communications path with a corresponding device and a communications path through a relay device are determined. According to the channel conditions of the communications paths, one or more paths are selected(S1201). Data is transmitted and received through the selected paths(S1203). In case the selected path is cut off, or channel condition information is lower than a preset threshold value, the other communications path is reselected(S1205,S1207). The data is transmitted and received through the reselected path(1209).

Abstract translation: 目的：提供一种基于集中控制型MAC（媒体访问控制）的无线通信系统中的中继装置的数据收发装置和方法，通过使用通过中继装置的中继路径平滑发送数据，即使在条件 的通道不好，或者设备之间的LOS（视线）的直接路径被切断。 规定：确定通过相应设备的通信路径和通过中继设备的通信路径的信道状况。 根据通信路径的信道条件，选择一个或多个路径（S1201）。 通过选择的路径发送和接收数据（S1203）。 在所选择的路径被切断或信道条件信息低于预设阈值的情况下，重新选择另一通信路径（S1205，S1207）。 通过重选路径（1209）发送和接收数据。

公开(公告)号：KR100932069B1

公开(公告)日：2009-12-15

申请号：KR1020070132004

申请日：2007-12-17

Applicant: 한국전자통신연구원

Inventor： 김용선 ,  이우용 ,  김진경 ,  김경표 ,  권형진 ,  이재섭

IPC: H04B7/26 ,  H04B5/02

Abstract: A distance base controlled beam apparatus and a method thereof at the same time for suing a same channel are provided to reduce the interference with the other user terminal when performing communication between a user terminal and a service providing device. A user terminal is connected to a service providing device(S210). The distance between the service providing device and the user terminal is measured(S220). The user terminal controls the beam width and transmission power with reference to the measured distance information(S230). The user terminal transmits data request message to the service providing device. The data response message is received from the service providing device(S240). The user terminal transmits and receives the service providing device and data(S250).

Abstract translation: 提供了一种基于距离的受控束设备及其同时采用相同频道的方法，以减少在用户终端和服务提供设备之间进行通信时与其他用户终端的干扰。 用户终端连接到服务提供设备（S210）。 测量服务提供设备和用户终端之间的距离（S220）。 用户终端参考测量的距离信息来控制波束宽度和发射功率（S230）。 用户终端向服务提供设备发送数据请求消息。 数据响应消息从服务提供设备接收（S240）。 用户终端发送和接收服务提供设备和数据（S250）。

公开(公告)号：KR1020090100219A

公开(公告)日：2009-09-23

申请号：KR1020080127924

申请日：2008-12-16

Applicant: 한국전자통신연구원

Inventor： 김용선 ,  홍승은 ,  김경표 ,  권형진 ,  김진경 ,  이우용

IPC: H04N19/89

CPC classification number: H04N19/67

Abstract: PURPOSE: A method and an apparatus for differently protecting an error for non compression moving picture signal transmission of various types in a broadband high frequency wireless system are provided to more powerfully protect important pixel information, thereby preventing serious image degradation in a receiving side due to a transmission channel error. CONSTITUTION: A bit space size and a bit sliced location are confirmed per a pixel component. The bit space size configures a pixel if moving picture data are input. The bit sliced location is classified based on importance. A pixel of a moving picture is classified according to importance per the pixel component by control of a UEP transmission controller(110). Error correction encoding which corrects relatively more errors is used in information with higher importance.

Abstract translation: 目的：提供一种用于在宽带高频无线系统中不同地保护各种类型的非压缩运动图像信号传输的误差的方法和装置，以更有效地保护重要的像素信息，从而防止由于接收侧的严重图像劣化 传输通道错误。 构成：每个像素分量确定位空间大小和位切片位置。 如果输入运动图像数据，则位空间大小配置像素。 位切片位置根据重要性进行分类。 通过UEP传输控制器（110）的控制，根据每个像素分量的重要性对运动图像的像素进行分类。 在更重要的信息中使用纠正相对更多错误的纠错编码。

公开(公告)号：KR100906303B1

公开(公告)日：2009-07-07

申请号：KR1020070096695

申请日：2007-09-21

Applicant: 한국전자통신연구원

Inventor： 김용선 ,  김진경 ,  이우용 ,  김경표 ,  권형진 ,  이재섭 ,  이동용 ,  김민택

IPC: H04L12/28

Abstract: 장애물 회피를 위한 노드 간 무선 통신 방법 및 시스템을 개시한다. 본 발명에 의한 장애물 회피를 위한 노드 간 무선 통신 방법은 데스티네이션 노드와의 통신 경로에 대한 장애 발생 여부를 판단하는 단계; 상기 통신 경로에 장애가 발생한 것으로 판단된 경우, 복수의 주변 노드로부터 상기 복수의 주변 노드와 상기 데스티네이션 노드 간의 채널 상태 정보(CSI)를 획득하는 단계; 상기 획득된 채널 상태 정보에 기초하여, 상기 복수의 주변 노드 중 하나를 중계 노드로서 선택하는 단계; 및 상기 중계 노드로서 선택된 주변 노드를 이용하여, 상기 데스티네이션 노드와 통신을 수행하는 단계를 포함한다.
장애물 회피, 채널 상태 정보, 주변 노드, 중계 노드, 와이미디어 무선 매체 접근 제어

公开(公告)号：KR1020090063363A

公开(公告)日：2009-06-18

申请号：KR1020070130685

申请日：2007-12-14

Applicant: 한국전자통신연구원

Inventor： 김용선 ,  김진경 ,  이우용 ,  김경표 ,  권형진

IPC: H04B7/26

CPC classification number: H04W64/00 ,  G01S5/0263 ,  G01S5/14 ,  H04B7/2606 ,  H04W60/00

Abstract: A super fine verifying apparatus and a method thereof for grasping the location of a user terminal/location information object terminal according to the demand of a user are provided to recognize the location of the user terminal and the location of the information object terminal. A communication network module unit(10) processes transmission signal between a user terminal according to location recognition precision. A communication network module controller(20) controls the access of a plurality of communication network. A location recognition calculator(30) calculates the location of the user terminal by sequentially accessing a plurality of communication network. A database stores the information about the user terminal. The stored information is provided to the communications network module control unit and position awareness calculation unit.

Abstract translation: 提供了一种用于根据用户的需求来掌握用户终端/位置信息对象终端的位置的超精细验证装置及其方法，以识别用户终端的位置和信息对象终端的位置。 通信网络模块单元（10）根据位置识别精度处理用户终端之间的传输信号。 通信网络模块控制器（20）控制多个通信网络的接入。 位置识别计算器（30）通过顺序地访问多个通信网络来计算用户终端的位置。 数据库存储有关用户终端的信息。 所存储的信息被提供给通信网络模块控制单元和位置感知计算单元。

公开(公告)号：KR100893930B1

公开(公告)日：2009-04-21

申请号：KR1020070061714

申请日：2007-06-22

Applicant: 한국전자통신연구원 ,  한양대학교 산학협력단

Inventor： 권형진 ,  조숙희 ,  허남호 ,  김진웅 ,  이수인 ,  정제창 ,  진순종 ,  최민석 ,  김원기

IPC: H04N19/597 ,  H04N13/00

Abstract: 1. 청구범위에 기재된 발명이 속한 기술분야
본 발명은 다시점 비디오 부호화를 위한 시간 직접예측 방법에 관한 것임.
2. 발명이 해결하려고 하는 기술적 과제
본 발명은 부호화하고자 하는 대상블록에 대한 앵커블록이 참조하는 블록(참조블록)이 동일 시점(View) 영상이면 시간적인 상관도를 이용하여 대상블록의 움직임 벡터를 예측하되, 특히 다른 시점 영상이면 앵커블록의 움직임 벡터를 이용하여 예측함으로써, 다시점 영상에서 현재 대상블록의 움직임 정보를 정밀하게 예측할 수 있으며 이로 인해 압축 효율을 개선할 수 있는, 다시점 비디오 부호화를 위한 시간 직접예측 방법을 제공하는데 그 목적이 있음.
3. 발명의 해결방법의 요지
본 발명은, 다시점 비디오 부호화를 위한 시간 직접예측 방법에 있어서, 부호화하고자 하는 대상블록에 대한 앵커블록이 참조하는 블록(참조블록)이 상기 앵커블록과 동일한 시간축 상에 있는 다른 시점(View)의 영상블록인지를 확인하는 참조블록 확인 단계; 및 상기 확인 결과, 상기 참조블록이 다른 시점의 영상블록이면 상기 앵커블록의 움직임 벡터를 이용하여 상기 대상블록의 움직임 벡터를 예측하는 다시점 예측 단계를 포함함.
4. 발명의 중요한 용도
본 발명은 다시점 비디오 부호화를 위한 시간 직접예측 등에 이용됨.
다시점 비디오 부호화, 시간 직접예측, 공간 직접예측, 움직임 벡터, 대상블록, 대상픽처, 앵커블록, 앵커픽처, 참조블록, 참조픽처, 시간적 상관도

公开(公告)号：KR1020090030961A

公开(公告)日：2009-03-25

申请号：KR1020070096695

申请日：2007-09-21

Applicant: 한국전자통신연구원

Inventor： 김용선 ,  김진경 ,  이우용 ,  김경표 ,  권형진 ,  이재섭 ,  이동용 ,  김민택

IPC: H04L12/28

Abstract: A radio communications method and a system thereof between nodes for an obstacle avoidance deliver data through a node in which the channel condition is good among end-point nodes are provided to perform data communication between a source node and a destination node due to avoidance of obstacle. The generation of the failure about the communications path with s destination node is determined(S410). CSI(Channel State Information) between the destination node and a plurality of end-point nodes is obtained from a plurality of end-point nodes(S420). One is selected between a plurality of end-point nodes and one based on the obtained channel state information as the relay node(S430). The end-point node selected as the transit node is used(S440).

Abstract translation: 用于避障的节点之间的无线电通信方法及其系统被提供用于通过节点之间的信道条件良好的节点传送数据，以便由于避免障碍物而在源节点和目的地节点之间进行数据通信 。 确定与目的地节点的通信路径的故障的产生（S410）。 从多个终点节点获得目的节点与多个终点节点之间的CSI（信道状态信息）（S420）。 基于所获得的信道状态信息作为中继节点，在多个端点节点之间选择一个端点节点之间（S430）。 使用选择作为传输节点的端点节点（S440）。

公开(公告)号：KR1020090023043A

公开(公告)日：2009-03-04

申请号：KR1020080040105

申请日：2008-04-29

Applicant: 한국전자통신연구원

Inventor： 김경표 ,  이우용 ,  김진경 ,  김용선 ,  권형진

IPC: H04N7/01

CPC classification number: H04L1/0023 ,  H04L1/0003 ,  H04L1/0025

Abstract: A method for applying amplitude use to a digital amplifier with variable bit resolution or clock frequency and an apparatus for executing the method are provided to change bit resolution, a clock frequency, and a modulation scheme according to the state of a wireless transmission channel, thereby ensuring effective utilization of resources of a system and a maximum transmission rate without data error in a given channel state. A transmitter(110) includes a modulator(111), a D/A(Digital/ Analog) converter(112), and an RF(Radio Frequency) processor(113), and a receiver(120) includes an RF processor(121), an A/D converter(122), a demodulator(123), and SNR(Signal to Noise Ratio) calculator(124), and a modulation controller(125). Upon receiving digital data to be transmitted from an upper layer, a modulator modulates the digital data using a predetermined digital modulation scheme or a modulation scheme feedbacked from the receiver, and provide the modulated signal to the D/A converter. The D/A converter converts the modulated signal into an analog signal through a digital filtering using bit resolution feedbacked from the receiver or predetermined bit resolution, and provides the converted signal to the RF processor. Also, the D/A converter converts the modulated signal into the analog signal using a clock frequency instead of using the bit resolution. The D/A converter 112 performs oversampling the digital signal with a corresponding clock frequency using a clock frequency feedbacked from the receiver or a predetermined clock frequency, converts the signal into the analog signal through a digital filtering, and provides the converted signal to the RF processor. The RF processor includes a filter and front end unit, and the like. Also, the RF processor receives a signal of a high frequency band, which passes through a wireless channel, to convert into a baseband signal, and outputs the converted signal. The A/D converter converts the analog baseband signal of the RF processor into a digital signal using bit resolution set by the modulation controller or clock frequency and outputs the converted signal. The modulator receives the digital signal converted through the A/D converter, demodulates the signal using a digital modulation scheme used when the transmitter transmits a signal, and transmits the demodulated signal to the upper layer. The SNR calculator calculates an SNR of an analog signal received through the RF processor and provide the calculated value to the modulation controller. The modulation controller searches a setting table predetermined by an experiment for a modulation scheme and bit resolution corresponding to the SNR using the SNR provided from the SNR calculator.

Abstract translation: 提供了一种用于将幅度使用应用于具有可变比特分辨率或时钟频率的数字放大器的方法以及用于执行该方法的装置，以根据无线传输信道的状态改变比特分辨率，时钟频率和调制方案，由此 确保在给定信道状态下有效利用系统资源和最大传输速率，而不会出现数据错误。 发射机（110）包括调制器（111），D / A（数字/模拟）转换器（112）和RF（射频）处理器（113），接收机（120）包括RF处理器 ），A / D转换器（122），解调器（123）和SNR（信噪比）计算器（124），以及调制控制器（125）。 在接收到要从上层发送的数字数据时，调制器使用预定的数字调制方案或从接收机反馈的调制方案来调制数字数据，并将调制信号提供给D / A转换器。 D / A转换器通过使用从接收器反馈的位分辨率或预定位分辨率的数字滤波器将调制信号转换成模拟信号，并将转换的信号提供给RF处理器。 此外，D / A转换器使用时钟频率将调制信号转换为模拟信号，而不是使用位分辨率。 D / A转换器112使用从接收器反馈的时钟频率或预定时钟频率，以对应的时钟频率对数字信号进行过采样，通过数字滤波将信号转换成模拟信号，并将转换的信号提供给RF 处理器。 RF处理器包括滤光器和前端单元等。 此外，RF处理器接收通过无线信道的高频带的信号，以转换为基带信号，并输出转换后的信号。 A / D转换器使用由调制控制器或时钟频率设置的位分辨率将RF处理器的模拟基带信号转换为数字信号，并输出转换后的信号。 调制器接收通过A / D转换器转换的数字信号，使用发射机发送信号时使用的数字调制方式对信号进行解调，并将解调信号发送到上层。 SNR计算器计算通过RF处理器接收的模拟信号的SNR，并将计算的值提供给调制控制器。 调制控制器使用从SNR计算器提供的SNR搜索与实验相关的调制方案和与SNR相对应的比特解析的预定的设置表。