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公开(公告)号：KR1020150071922A
公开(公告)日：2015-06-29
申请号：KR1020130159054
申请日：2013-12-19
Applicant: 한국해양과학기술원
IPC: H04L7/04 , H04L7/00 , H04L27/227
CPC classification number: H04L7/04 , H04L7/0079 , H04L27/227
Abstract: 본발명의일 실시예에따른테트라방식의통신용수신기의패킷동기검출장치는두 개의미드앰블심볼열각각에대해, 상기수신기에수신된기저대역신호의샘플들과복소수영역에서상관값을계산하는연산부; 상기상관값을미리설정된문턱값과비교하는비교부; 및상기상관값이상기문턱값이상이면, 상기미드앰블심볼열이포함된패킷으로부터패킷동기를검출하는검출부를포함한다.
Abstract translation: 根据本发明的实施例，在TETRA通信接收机中使用的分组同步检测装置包括：计算单元，其计算复数区域的相关值和接收到接收机的基带信号的样本，分别用于两个中间码符号 序列; 比较单元，其将相关值与预定阈值进行比较; 以及检测单元，当所述相关值等于或大于所述阈值时，检测包含在所述中间码符号序列中的分组的分组同步状态。
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公开(公告)号：KR101473364B1
公开(公告)日：2014-12-26
申请号：KR1020140065212
申请日：2014-05-29
Applicant: 한국해양과학기술원
CPC classification number: H04B7/212 , H04W40/04 , H04W72/0446 , H04W84/18
Abstract: The present invention relates to an enhanced ad-hoc self-organizing time division multiple access (EASO-TDMA) type media access control method for a 2nd generation modem, comprising a first phase (FP) processing step including network entry, time slot scanning, neighboring ship (NS) checking, and path setting, and a normal phase (NP) processing step of transmitting a packet during an occupied time slot using a given path and receiving packets of neighboring ships during the other times. According to the present invention, since the number of time slots of a ship is set according to the number of transmission nodes by using a route table, and a time slot is allocated to communicate to a destination during one frame, a transmission delay time can be reduced and occurrence of an application timeout can be prevented, and thus, wireless communication with a land based station, as well as communication between marine neighboring ships, can be more stably performed.
Abstract translation: 本发明涉及一种用于第二代调制解调器的增强型自组织自组织时分多址（EASO-TDMA）型媒体接入控制方法，包括：第一阶段（FP）处理步骤，包括网络入口，时隙扫描， 相邻船舶（NS）检查和路径设置以及在占用时隙期间使用给定路径发送分组并在其他时间接收相邻船只的分组的正常相位（NP）处理步骤。 根据本发明，由于通过使用路由表根据发送节点的数量来设置船舶的时隙数，并且在一帧期间分配时隙以与目的地通信，所以传输延迟时间可以 可以防止应用超时的发生，从而能够更稳定地进行与陆基站的无线通信以及海洋相邻船舶之间的通信。
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公开(公告)号：KR101469718B1
公开(公告)日：2014-12-05
申请号：KR1020130039900
申请日：2013-04-11
Applicant: 한국해양과학기술원
IPC: H04L12/741 , H04W84/18
Abstract: 본발명에따른선박애드혹 네트워크(SANET)를위한네트워크계층에서의패킷처리방법은, 상위계층으로부터상위계층데이터를수신하는단계; 및라우트테이블을참조하여, 상기상위계층데이터에주소헤더를첨부하여네트워크패킷을구성하는단계를포함하고, 상기네트워크패킷을구성하는단계에서, 상기주소헤더를선박또는기지국의 MMSI(Maritime Mobile Service Identity) 번호를이용하여나타내는것을특징으로한다.
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公开(公告)号：KR101426527B1
公开(公告)日：2014-08-13
申请号：KR1020130086750
申请日：2013-07-23
Applicant: 한국해양과학기술원
IPC: G01R25/00
Abstract: The present invention relates to a phase tracker for three-phase power. The phase tracker includes a two-phase conversion unit which receives signals of different phases from each output terminal outputting a three-phase signal from a three-phase AC power and outputs a third signal in which a first and a second signal, which are converted into a two-phase vector signal on rectangular coordinates, and the three-phase signals are added to each other; a first adder which outputs the sum of the first signal outputted from the two-phase conversion unit and the third signal; a multiplexer which outputs by multiplexing the imaginary part of a fourth signal to which a first compensation value set in the second signal is multiplied and the real part of the output signal from the first adder; an error calculation unit which receives the output signal from the first multiplier and calculates a phase error value; a phase calculation unit which calculates three-phase values from the output signal from the error calculation unit; and a complex value extraction unit which extracts a complex value from the output signal from the phase calculation unit and outputs the values as the first feedback signal to the first multiplier. According to the described phase tracker for three-phase AC, it is possible to reflect phase differences between the three phases, and accordingly track the phases accurately.
Abstract translation: 本发明涉及三相电力的相位跟踪器。 相位跟踪器包括两相转换单元，其从每个输出端接收不同相位的信号，从三相AC电力输出三相信号，并输出第三信号，其中第一和第二信号被转换 变成矩形坐标上的两相矢量信号，并将三相信号相加; 第一加法器，其输出从两相转换单元输出的第一信号和第三信号的和; 多路复用器，通过多路复用第二信号中设置的第一补偿值的第四信号的虚部与来自第一加法器的输出信号的实部相乘; 误差计算单元，接收来自第一乘法器的输出信号并计算相位误差值; 相位计算单元，根据来自误差计算单元的输出信号计算三相值; 以及复数值提取单元，其从相位计算单元的输出信号中提取复数值，并将该值作为第一反馈信号输出到第一乘法器。 根据描述的用于三相AC的相位跟踪器，可以反映三相之间的相位差，并且相应地精确地跟踪相位。
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公开(公告)号：KR101427167B1
公开(公告)日：2014-08-07
申请号：KR1020130039894
申请日：2013-04-11
Applicant: 한국해양과학기술원
IPC: H04L12/741 , H04W40/24 , H04W84/18
Abstract: A packet processing method in a data link layer for a ship ad hoc network (SANET), according to the present invention, is configured to comprise the steps of receiving a physical layer message from the physical layer; extracting a MAC packet from the physical layer message; referring a route table determined by a network layer and verifying an address header of a network packet included in the MAC packet; and processing the MAC packet based on the route table and the address header.
Abstract translation: 根据本发明的用于船舶自组织网络（SANET）的数据链路层中的分组处理方法被配置为包括从物理层接收物理层消息的步骤; 从物理层消息中提取MAC包; 参考由网络层确定的路由表，并验证包含在MAC分组中的网络分组的地址头; 以及基于路由表和地址头处理MAC分组。
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Patent Agency Ranking
公开(公告)号：KR101407282B1
公开(公告)日：2014-06-13
申请号：KR1020120101252
申请日：2012-09-12
Applicant: 한국해양과학기술원 , 호서대학교 산학협력단
Abstract: 본 발명은 다중 홉 선박 통신망 기반의 자원할당 및 전송률 제어 방법에 관한 것으로, 보다 상세하게는 다중 홉 선박 통신망에서 각 홉 영역에 존재하는 선박의 분포 또는 선박들의 전송률에 기초하여, 부프레임(Sub-frame)의 크기를 설정하고 전송률을 제어하는 방법에 관한 것이다.
특히, 본 발명은 육상기지국이 각 홉 영역의 선박들에 대한 부프레임의 크기를 설정하고, 각 홉 영역에 존재하는 선박들이 과부하 여부를 판단하여 전송률을 제어함으로써, 전체 시스템의 성능을 크게 향상시킬 수 있으며, 다중 홉 선박 통신망에서의 효율적인 자원의 분배 및 사용이 가능하도록 함으로써, 신속하고 안정적인 데이터 전송이 가능하도록 하는 효과가 있다.
따라서, 다중 홉 통신 분야 및 해상 선박 통신 분야에서 경쟁력 및 신뢰성을 향상시킬 수 있음은 물론, 본 발명에 의한 기술을 기반으로 하여 다양한 통신분야에서도 동일 내지 유사한 효과를 제공할 수 있다.-
公开(公告)号：KR101371322B1
公开(公告)日：2014-03-10
申请号：KR1020130108942
申请日：2013-09-11
Applicant: 한국해양과학기술원
CPC classification number: H04J3/16 , H04B7/212 , H04J3/062 , H04L69/324 , H04W74/08
Abstract: The present invention relates to a time parameter determining method of a time division multiple-access media access control protocol for a long range underwater network in which a command ship prevents the generation of reception collision between the command ship and cluster heads and performs effective two-way communication. For this, the command ship (CS) sets the time parameter according to the position of a different cluster head (CH) into an initial stage, a normal stage, and a final stage and controls the connection of the entire channel. The CH determines the time parameter of media access control protocol connected to the channel based on the time parameter provided from the CS. The time parameter determining method of the time division multiple-access media protocol comprises: a step of determining a beacon signal time offset of a CH j in a hop h and sub-hop k; and a step of determining a response signal transmission time offset of the CH j in the hop h and sub-hop k. [Reference numerals] (AA) Initial stage; (BB) Bus bar mac (MAC); (CC) Cluster head mac (MAC); (S210) Time parameter setting; (S220) Beacon signal transmission; (S230) Beacon signal transfer; (S240) Response signal transmission; (S250) Response signal transfer; (S260) Route setting; (S270) Route setting confirmation
Abstract translation: 本发明涉及一种用于长距离水下网络的时分多址媒体接入控制协议的时间参数确定方法，其中指挥舰防止命令船和簇头之间的接收冲突的产生， 方式沟通。 为此，指令船（CS）根据不同簇头（CH）的位置将时间参数设置为初始阶段，正常阶段和最后阶段，并控制整个通道的连接。 CH根据从CS提供的时间参数确定连接到信道的媒体访问控制协议的时间参数。 时分多址媒体协议的时间参数确定方法包括：确定跳跃h和子跳k中CH j的信标信号时间偏移的步骤; 以及确定跳跃h和子跳k中的CH j的响应信号传输时间偏移的步骤。 （附图标记）（AA）初始阶段; （BB）巴士巴（MAC）; （CC）群集头mac（MAC）; （S210）时间参数设定; （S220）信标信号传输; （S230）信标信号传送; （S240）响应信号传输; （S250）响应信号传送; （S260）路由设置; （S270）路由设置确认
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公开(公告)号：KR101371129B1
公开(公告)日：2014-03-07
申请号：KR1020120028234
申请日：2012-03-20
Applicant: 한국해양과학기술원
Abstract: 본 발명에 따르면, 해상 이동체들간의 네트워크를 위한 노드에서 수행되는 애드혹 통신 방법에 있어서, 노드 주변에 다른 노드가 존재하는지 여부 및 노드의 가용 채널 상황에 기초하여 메시지를 송수신하기 위한 통신 모드를 설정하는 단계, 메시지에 포함된 수신 대상 정보 및 메시지의 타입에 기초하여 메시지를 송수신하기 위한 설정을 하는 통신 제어 설정 단계, 설정된 통신 모드 및 통신 제어 설정 단계에 따라 메시지를 송수신하는 단계를 포함하는 애드혹 통신 방법 및 노드를 제공할 수 있다.
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公开(公告)号：KR101365945B1
公开(公告)日：2014-02-24
申请号：KR1020130053654
申请日：2013-05-13
Applicant: 한국해양과학기술원
CPC classification number: H04B7/0452 , H04B7/0456 , H04B7/15542
Abstract: The present invention relates a communication method capable of effectively enhancing a communication capacity of a multiuser multi-input multi-output cellular communication system realizing two-way relaying. According to the present invention, a multiuser multi-input multi-output two-way relaying communication method using a lattice code, solves a problem that an effective communication capacity enhancing method does not become known in a traditional cellular communication system comprising: one base station having a plurality of transmission and reception antenna systems; one relaying node; and a plurality communication terminal nodes having one transmission and reception antenna, thereby effectively increasing the communication capacity by using the lattice code. [Reference numerals] (S21) Select N sets of user terminal nodes and generate a channel matrix to a relay node and a channel matrix from the user terminal nodes to the relay node at a base station node wherein the N is a smaller number between N-B and N-V; (S22) Generate a codeword vector to be transmitted by the user terminal nodes and the base station via lattice coding; (S23) Generate a codeword vector to be transmitted to a k^th user terminal node by the base station node via horizontal coding of the user terminal nodes and a coding matrix expressing a codeword vector to be transmitted to the base station by the k^th user terminal node; (S24) Generate a transmission signal of the base station node via linearization coding; (S25) Generate a transmission signal of the user terminal node; (S26) Generate a reception signal to be received by the relay node; (S27) Decode the reception signal into each codeword by using a horizontal sequential interference removal method; (S28) Make a relay node encode the decoded signal at via lattice coding and transmit the encoded signal to the base station node and the user terminal nodes, respectively; (S29) Make the base station node and the user terminal nodes decode the signal encoded via the lattice coding into their signals
Abstract translation: 本发明涉及能够有效提高实现双向中继的多用户多输入多输出蜂窝通信系统的通信能力的通信方法。 根据本发明，使用格码的多用户多输入多输出双向中继通信方法解决了传统的蜂窝通信系统中没有知道有效的通信容量增强方法的问题，包括：一个基站 具有多个发射和接收天线系统; 一个中继节点; 以及具有一个发送和接收天线的多个通信终端节点，从而通过使用格码有效地增加了通信容量。 （附图标记）（S21）选择N组用户终端节点，并在基站节点处向中继节点和从用户终端节点到中继节点的信道矩阵生成信道矩阵，其中N是NB之间的较小数目 和NV; （S22）生成由用户终端节点和基站通过格子编码发送的码字向量; （S23）生成基站节点通过用户终端节点的水平编码发送到第k个用户终端节点的码字矢量，以及表示要通过第k个发送到基站的码字矢量的编码矩阵 用户终端节点; （S24）经由线性化编码生成基站节点的发送信号; （S25）生成用户终端节点的发送信号; （S26）生成要由中继节点接收的接收信号; （S27）通过使用水平顺序干扰去除方法将接收信号解码为每个码字; （S28）使中继节点通过格式编码对解码信号进行编码，并将编码信号分别发送给基站节点和用户终端节点; （S29）使基站节点和用户终端节点将通过格子编码编码的信号解码为其信号
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公开(公告)号：KR101309834B1
公开(公告)日：2013-09-23
申请号：KR1020110103819
申请日：2011-10-11
Applicant: 한국해양과학기술원
Abstract: 본 발명은 격자의 주파수 응답함수인 H(δ)에 대한 또는 의 역 퓨리에 변환 G(t)에 대하여 결합 모드식인 로 표현되는 일차원 역산란 관계에 대해 결합계수 를 구하는 방법에 관한 것으로서, 적용하고자 하는 외삽법깊이 P와 계층두께 h를 결정하는 단계와, 결정된 P에 대해 1, 2,… , P+1의 최소 공배수 L을 계산하는 단계와, A
P W
P =e
1 으로부터 웨이트 팩터인 ω
m 을 구하는 단계와, 과, 에 대해 TDLP를 이용하여 시작 위치가 이면서 계층 두께가 인 결합계수 를 계산하는 단계와, 을 계산하고, 계산된
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