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公开(公告)号:KR101740937B1
公开(公告)日:2017-05-30
申请号:KR1020110135080
申请日:2011-12-15
Applicant: 한국전자통신연구원
CPC classification number: H04W56/0055 , H04L27/2665 , H04L27/2678 , H04L27/2688 , H04L27/2691 , H04W84/18
Abstract: 애드혹 네트워크시스템에서분산동기를수행하는방법이제공된다. 이방법은수신시점변경구간을포함하는신호를복수의노드를통해수신하는단계및 상기복수의노드를통해상기신호를수신하는수신시점을미리설정된순환전치(cyclic prefix :CP) 구간에포함되도록상기수신시점변경구간내에서변경하는단계, 데이터를복구하기시작하는시점인고속푸리에변환(Fast Fourier Transform : FFT) 시작시점을상기변경된수신시점을기초로변경하는단계및 미리설정된 FFT 시작시점의기준점및 상기변경된 FFT 시작시점의차이값을기초로상기복수의노드각각의전송시점의기준점을변경하는단계를포함한다. 이방법에따르면, 노드간거리에따른전파지연보다긴 순환전치부호를삽입하는동기방법보다적은오버헤드를가진다.
Abstract translation: 提供了一种用于在自组织网络系统中执行分布式同步的方法。 列入:(CP循环前缀)间隔该方法是包括一个接收点变化的时间间隔通过多个节点接收的信号,并接收预定的循环前缀添加到时通过所述多个节点中接收所述信号的 用于从在时间变化间隔接收点改变的步骤,快速傅立叶的时间变换,开始恢复数据:改变开始的步骤的参考点(快速傅里叶变换FFT)开始的接收时刻为基准点被改变时,与预先设定的FFT起始时间和 基于修改的FFT起始时间和改变的所述多个节点中的相应的传输时间的基准点的步骤之间的差值。 根据该方法,并且具有比插入比根据节点之间的距离的传播延迟长周期前缀的同步方法更少的开销。
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公开(公告)号:KR1020160055095A
公开(公告)日:2016-05-17
申请号:KR1020150156180
申请日:2015-11-06
Applicant: 한국전자통신연구원
IPC: H04L5/00
Abstract: 채널추정을위한기준신호송신장치는채널추정을위한제1 기준신호를적어도하나의자원블록에할당하고, 채널추정을위한제2 기준신호를상기적어도하나의자원블록에할당하며, 상기제2 기준신호가할당된부반송파의파워를부스팅하고, 상기적어도하나의자원블록을전송한다.
Abstract translation: 根据本发明,提供了一种传输用于信道估计的参考信号的方法和装置,其能够提高信道估计的精度。 用于发送用于信道估计的参考信号的装置被配置为将用于信道估计的第一参考信号分配给至少一个资源块,以将用于信道估计的第二参考信号分配给所述至少一个资源块,以提高功率 已经分配了第二参考信号的子载波,并且发送至少一个资源块。
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公开(公告)号:KR1020160007403A
公开(公告)日:2016-01-20
申请号:KR1020150097229
申请日:2015-07-08
Applicant: 한국전자통신연구원
IPC: H04L5/00
Abstract: D2D 프레임에포함된제어서브프레임에서가용 PRB를선택하는단계, 그리고가용 PRB를이용하여제어정보를전송하는단계를포함하는제어정보전송방법및 그단말이제공된다.
Abstract translation: 提供控制信息发送方法及其终端。 控制信息发送方法包括以下步骤:使包括在D2D帧中的控制子帧能够选择可用的PRB; 并通过使用可用的PRB发送控制信息。 因此,本发明能够使D2D终端基于通过比较参考信号而计算的矩阵来感测信道,以便选择D2D物理信道的无线资源并发送控制信息。
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公开(公告)号:KR1020140089648A
公开(公告)日:2014-07-16
申请号:KR1020130000749
申请日:2013-01-03
Applicant: 한국전자통신연구원
IPC: H04W56/00
CPC classification number: H04W56/0015 , H04W56/00 , H04W84/18
Abstract: In a wireless communication system configured to have a plurality of nodes, any one of the nodes receives a broadcast message from the nodes adjacent thereto, and calculates a reception time point variation that is difference between a time point when the message is received for each of the adjacent nodes and a time point when the preceding message is received. The reference time of the node is corrected based on the variation calculated for each of the adjacent nodes.
Abstract translation: 在被配置为具有多个节点的无线通信系统中,节点中的任一个从与其相邻的节点接收广播消息,并且计算接收时间点变化,该接收时间点变化是当为每个节点接收到消息的时间点之间的差 相邻节点和接收到前一消息的时间点。 基于为每个相邻节点计算的变化来校正节点的参考时间。
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公开(公告)号:KR1020140048401A
公开(公告)日:2014-04-24
申请号:KR1020120113155
申请日:2012-10-11
Applicant: 한국전자통신연구원
IPC: H04W28/04
CPC classification number: H04L1/1887 , H04L1/1607 , H04L1/1816 , H04L45/28 , H04L2001/0093
Abstract: Disclosed are a communication device and a data transmission method of the communication device. Upon receiving a feedback message which corresponds to data failed to be received by each communication receiver apparatus, the communication device generates a feedback matrix corresponding to the feedback message, selects candidate transmission data from the feedback matrix, and executes the network coding of the candidate transmission data to retransmit the data to each communication receiver apparatus. [Reference numerals] (S310) Receiving a feedback message; (S320) Updating a feedback matrix; (S330) Rearranging the feedback matrix according to priorities; (S340) Selecting a part of the feedback matrix to be used for transmission if candidate transmission data is greater than available transmission resources; (S350) Generating retransmission data in the selected part of the feedback matrix; (S360) Adding data to be transmitted if the generated retransmission data is less than the available transmission resources; (S370) Dividing the final retransmission data into a transmission unit; (S380) Adding a header to every transmission unit and transmitting the same
Abstract translation: 公开了通信装置的通信装置和数据发送方法。 在接收到对应于每个通信接收装置未能接收的数据的反馈消息时,通信装置产生与反馈消息对应的反馈矩阵,从反馈矩阵中选择候选传输数据,并执行候选传输的网络编码 用于将数据重发到每个通信接收装置的数据。 (附图标记)(S310)接收反馈消息; (S320)更新反馈矩阵; (S330)根据优先级重新排列反馈矩阵; (S340)如果候选传输数据大于可用传输资源,则选择要用于传输的反馈矩阵的一部分; (S350)在所述反馈矩阵的所选部分中生成重发数据; (S360)如果生成的重传数据小于可用传输资源,则添加要发送的数据; (S370)将最终重发数据分割成发送单元; (S380)将标题添加到每个传输单元并传送
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公开(公告)号:KR1020130110985A
公开(公告)日:2013-10-10
申请号:KR1020120033381
申请日:2012-03-30
Applicant: 한국전자통신연구원
CPC classification number: H04W72/082 , H04W72/12 , H04J11/005 , H04W84/18
Abstract: PURPOSE: A resource allocating device for the interference evasion of a wireless communication system and a method thereof are provided to prevent receiving failure caused by interference generated by incomplete synchronization with neighbor nodes in a wireless mesh network. CONSTITUTION: An allocation control unit (230) selects a simultaneous receiving impossibility node and a simultaneous transmission impossibility node about each hop node of a node by using a signal quality value of each hop node. The allocation control unit excludes a transmission-expected resource of the simultaneous transmission impossibility node from a transmission resource during the transmission resource allocation of the node. The allocation control unit excludes the transmission-expected resource of the simultaneous transmission impossibility node from a receiving resource of the node during the receiving resource allocation of the node. [Reference numerals] (210) Transmitting unit; (220) Receiving unit; (230) Allocation control unit
Abstract translation: 目的:提供一种用于无线通信系统的干扰逃避的资源分配装置及其方法,以防止由于与无线网状网络中的邻居节点不完全同步而产生的干扰而导致的接收故障。 构成:分配控制单元(230)通过使用每个跳跃节点的信号质量值来选择关于节点的每个跳跃节点的同时接收不可能节点和同时发送不可能节点。 分配控制单元在节点的传输资源分配期间从传输资源排除同时传输不可能节点的传输预期资源。 在节点的接收资源分配期间,分配控制单元从节点的接收资源中排除同时发送不可能节点的发送预期资源。 (附图标记)(210)发送单元; (220)接收单元; (230)分配控制单元
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公开(公告)号:KR101207570B1
公开(公告)日:2012-12-03
申请号:KR1020090003509
申请日:2009-01-15
CPC classification number: H04B7/024 , H04B7/0617 , H04B7/0626 , H04J11/0053
Abstract: 셀간 간섭완화방법에서, 복수의단말을복수의그룹으로그룹화한다. 기지국이복수의그룹중 제1 그룹에속한제1 단말에는인접기지국과의협력없이데이터를전송한다. 그리고기지국이복수의그룹중 제2 그룹에속한제2 단말에는인접기지국과의협력을통하여데이터를전송한다.
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公开(公告)号:KR1020120126447A
公开(公告)日:2012-11-21
申请号:KR1020110044226
申请日:2011-05-11
Applicant: 한국전자통신연구원 , 강원대학교산학협력단
CPC classification number: H04W72/0446 , H04W56/00 , H04W72/082 , H04W84/18
Abstract: PURPOSE: A resource allocation method in a wireless communication system is provided to reduce interference between users by allocating a slot having the highest performance index among unoccupied slots in an OFDMA(Orthogonal Frequency Division Multiple Access) type ad-hoc system to a terminal. CONSTITUTION: A resource allocating device senses a subcarrier already being used by the other terminal among all of subcarriers(S410). The resource allocating device obtains a time error, a frequency error, and receiving power information of the occupied subcarrier(S420). The resource allocating device calculates an SINR(Signal-to-Interference plus Noise Ratio) of unoccupied subcarriers(S430). The resource allocating device allocates a subcarrier having the highest SINR among the unoccupied subcarriers to a terminal(S440). [Reference numerals] (S410) Sensing a subcarrier being used; (S420) Acquiring a time error, a frequency error, and receiving power information of the occupied subcarrier; (S430) Calculating SINR of unoccupied subcarriers; (S440) Selecting and allocating a subcarrier with the maximum SINR
Abstract translation: 目的:提供一种无线通信系统中的资源分配方法,用于通过在OFDMA(正交频分多址)类型自组织系统中的未占用时隙之间分配具有最高性能指标的时隙来减少用户之间的干扰。 构成:资源分配装置检测所有子载波中已经被其他终端使用的副载波(S410)。 资源分配装置获取所占用的副载波的时间误差,频率误差和接收功率信息(S420)。 资源分配装置计算未占用子载波的SINR(信号与干扰加噪声比)(S430)。 资源分配装置将未占用副载波中具有最高SINR的子载波分配给终端(S440)。 (附图标记)(S410)感测正在使用的副载波; (S420)获取所占用的副载波的时间误差,频率误差和接收功率信息; (S430)计算未占用子载波的SINR; (S440)选择并分配具有最大SINR的子载波
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公开(公告)号:KR1020120071949A
公开(公告)日:2012-07-03
申请号:KR1020100133695
申请日:2010-12-23
Applicant: 한국전자통신연구원
CPC classification number: H04L1/0003 , H04L25/0224
Abstract: PURPOSE: A data transmission and reception method is provided to reduce the misjudgment probability of other data by reducing the reliability of an interference area and by improving decoding performance in a high interference area. CONSTITUTION: A data transmission apparatus divides a user data area into a section A and a section B(S101). The data transmission apparatus selects the allocation method of section B data and section A data according to the probability of the section A and B(S103). The data transmission apparatus differently encodes to an MSB(Most Significant Bit) and an LSB(Least Significant Bit)(S105). The data transmission apparatus differently applies a modulation method to the MSB and the LSB(S107).
Abstract translation: 目的:提供一种数据发送和接收方法,通过降低干扰区域的可靠性并改善高干扰区域的解码性能,减少其他数据的误判概率。 构成:数据发送装置将用户数据区域划分为A区和B区(S101)。 数据发送装置根据部分A和B的概率选择部分B数据和部分A数据的分配方法(S103)。 数据发送装置对MSB(最高有效位)和LSB(最低有效位)进行不同地编码(S105)。 数据发送装置将调制方法不同地应用于MSB和LSB(S107)。
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公开(公告)号:KR1020100125950A
公开(公告)日:2010-12-01
申请号:KR1020090044930
申请日:2009-05-22
Applicant: 한국전자통신연구원 , 한화시스템 주식회사
IPC: H04N7/24
Abstract: PURPOSE: A multi image compression apparatus and a method thereof for compressing an image inputted from a camera are provided to accurately monitor network resource in order to support a data ratio compression mode. CONSTITUTION: A video input unit(301) acquires an image which a client desires to watch the image inputted from a camera and transfers the image to an image compression unit(402). An image compressing system(405) is embedded in a plurality of compressors. A controller(309) decides whether each compressor compresses the image in a JPEG2000 mode. A network interface unit(307) receives the compression mode information from a client.
Abstract translation: 目的:提供一种用于压缩从相机输入的图像的多图像压缩装置及其方法,以准确地监视网络资源,以支持数据比压缩模式。 构成:视频输入单元(301)获取客户端希望观看从相机输入的图像的图像,并将图像传送到图像压缩单元(402)。 图像压缩系统(405)嵌入在多个压缩机中。 控制器(309)确定每个压缩器是否以JPEG2000模式压缩图像。 网络接口单元(307)从客户端接收压缩模式信息。
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