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公开(公告)号：KR1020140046539A
公开(公告)日：2014-04-21
申请号：KR1020120110299
申请日：2012-10-04
Applicant: 목포대학교산학협력단
CPC classification number: H04L25/0224 , H04B7/15535 , H04J11/00
Abstract: The present invention relates to a method of estimating a channel in a bidirectional relay system which operates in a frequency selective fading channel and provides a channel estimating technique which minimizes the distortion of a power amplifier and maximum to average power ratio by using training progression which satisfies an optimum condition. [Reference numerals] (AA,BB) Start; (CC) Generate a transmission signal by adding cyclic prefix after an S_1 communication node generates a training sequence X_1; (DD) Generate a transmission signal by adding cyclic prefix after an S_2 communication node generates a training sequence X_2; (EE) First step; (FF) Second step of simultaneously transmitting the transmission signal generated in the first step to a relay by the S_1 communication node and the S_2 communication node; (GG) Third step of receiving the signal of the second step by a relay node, removing the cyclic prefix, inserting the cyclic prefix into a reception signal y_r from which the cyclic prefix is removed, and transmitting the same to each source node S_1 and S_2; (HH) Estimate instantaneous channel response f_1 after receiving the signal of the third step by the S_1 communication node and removing the cyclic prefix; (II) Estimate instantaneous channel response f_2 after receiving the signal of the third step by the S_2 communication node and removing the cyclic prefix; (JJ) Fourth step; (KK,LL) End
Abstract translation: 本发明涉及一种估计在频率选择性衰落信道中操作的双向中继系统中的信道的方法，并且提供一种信道估计技术，其使功率放大器的失真和最大平均功率比通过使用满足 最佳条件。 （标号）（AA，BB）开始; （CC）在S_1通信节点生成训练序列X_1之后，通过添加循环前缀生成发送信号; （DD）在S_2通信节点生成训练序列X_2之后，通过添加循环前缀生成发送信号; （EE）第一步; （FF）通过S_1通信节点和S_2通信节点同时发送在第一步骤中生成的发送信号到中继的第二步骤; （GG）通过中继节点接收第二步骤的信号的第三步骤，去除循环前缀，将循环前缀插入到循环前缀被去除的接收信号y_r中，并将其发送到每个源节点S_1和 S_2; （HH）在S_1通信节点接收到第三步骤的信号后，估计瞬时信道响应f_1，并删除循环前缀; （II）估计S_2通信节点接收到第三步信号后的瞬时信道响应f_2，去除循环前缀; （JJ）第四步; （KK，LL）结束
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公开(公告)号：KR1020140042070A
公开(公告)日：2014-04-07
申请号：KR1020120108130
申请日：2012-09-27
Applicant: 목포대학교산학협력단
CPC classification number: H04W36/14 , H04W36/005 , H04W80/04
Abstract: Disclosed is a high-speed vertical handover method in a MIH and PFMIPv6 environment. The method enables a corresponding feature via an MIH message without altering a link layer. In other words, a report massage is transmitted to a corresponding terminal′s MIHF, and the MIHF which received the message transmits a MIH_MN_HIrequest which is a network-layer message notifying the initiation of a handover to a PreviousMAG instead of a Handover initiation which is a conventional link-layer message notifying the initiation of a handover.
Abstract translation: 公开了MIH和PFMIPv6环境中的高速垂直切换方法。 该方法通过MIH消息实现相应的特征，而不改变链路层。 换句话说，报告按摩被发送到对应终端的MIHF，并且接收到该消息的MIHF发送MIH_MN_HI请求，MIH_MN_HI请求是通知向先前的MAG发起切换的网络层消息，而不是切换启动 常规的链路层消息通知切换的发起。
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公开(公告)号：KR1020130139480A
公开(公告)日：2013-12-23
申请号：KR1020120062947
申请日：2012-06-13
Applicant: 목포대학교산학협력단
CPC classification number: H04W36/0044 , H04W36/0061 , H04W36/14 , H04W36/30
Abstract: The present invention relates to a handover which is a process of, when a mobile station in progress of ongoing call moves out of a cell boundary of the current base station and entering a new cell boundary of another neighboring base station, automatically synchronizing the mobile station with a new channel of the neighboring base station for maintain the ongoing call seamlessly, and more particularly, to a network interface selection scheme, which conducts the handover using information on networks around the mobile station for improving inter-RAT handover performance. [Reference numerals] (AA) START;(FF) END;(S600) Handover event;(S610) Information query;(S620,S622) Receive Get_Information;(S621) Search DB;(S630) RSS > Threshold ?;(S640) QoS parameter
Abstract translation: 本发明涉及一种切换，当正在进行的呼叫正在进行中的移动台从当前基站的小区边界移出并进入另一相邻基站的新小区边界时，自动同步该移动台 具有相邻基站的新信道，用于无缝地维持正在进行的呼叫，更具体地，涉及一种网络接口选择方案，其利用移动台周围的网络上的信息进行切换，以改善RAT间切换性能。 （S6A）START（FF）END;（S600）切换事件;（S610）信息查询;（S620，S622）接收Get_Information;（S621）搜索DB;（S630）RSS>门限值 ）QoS参数<阈值？（S650）维护服务网络连接;（S660）选择链路;（S670）请求资源;（S680）执行切换
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公开(公告)号：KR1020130046668A
公开(公告)日：2013-05-08
申请号：KR1020110111192
申请日：2011-10-28
Applicant: 목포대학교산학협력단
IPC: H04L27/26
CPC classification number: H04L27/2657
Abstract: PURPOSE: An OFDM[Orthogonal Frequency Division Multiplexing] frequency offset estimating method based on the combination of continuous correlation values is provided to obtain a correlation value which is nearly constant regardless of a time error value. CONSTITUTION: The components of a differentially combined result are added. A time error which maximizes the added value of components is calculated. The added value of the components is calculated in a state where the time error is nonexistent. [Reference numerals] (AA) Normalized correlation value; (BB) Time error(τ)
Abstract translation: 目的：提供基于连续相关值组合的OFDM [正交频分复用]频偏估计方法，以获得几乎恒定的相关值，而不管时间误差值如何。 构成：添加了差分组合结果的组件。 计算最大化组件附加值的时间误差。 在时间误差不存在的状态下计算组件的附加值。 （附图标记）（AA）归一化相关值; （BB）时间误差（τ）
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公开(公告)号：KR1020130043969A
公开(公告)日：2013-05-02
申请号：KR1020110108188
申请日：2011-10-21
Applicant: 목포대학교산학협력단
Abstract: PURPOSE: Design and implementation of an emergency evacuation system for a smart ship using a ship area network are provided to guide passengers to an optimum evacuation path rapidly as sensing dangers on a ship. CONSTITUTION: A disaster evacuation system of a ship includes sensing nodes, a middle collection node, and a main node. The sensing nodes include a sensor node and a guide node. The sensor node senses dangers on a ship. The guide node guides passengers to an evacuation path. The middle collection node processes collected information. The main node monitors information in real time and controls the middle collection node. [Reference numerals] (AA) Main node; (BB) Middle collection node; (CC) Sensor node; (DD) Evacuation path guide node; (EE) Wireless sensor network[ZigBee]
Abstract translation: 目的：设计和实施使用船舶区域网络的智能船舶的紧急疏散系统，以便引导乘客迅速获得最佳的疏散路径，以检测船上的危险。 构成：船舶的救灾系统包括感应节点，中间收集节点和主节点。 感测节点包括传感器节点和引导节点。 传感器节点感测船上的危险。 引导节点将乘客引导到疏散路径。 中间收集节点处理收集的信息。 主节点实时监控信息，控制中间收集节点。 （标号）（AA）主节点; （BB）中间收集节点; （CC）传感器节点; （DD）疏散路径引导节点; （EE）无线传感器网络[ZigBee]
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Patent Agency Ranking
公开(公告)号：KR1020130037921A
公开(公告)日：2013-04-17
申请号：KR1020110102460
申请日：2011-10-07
Applicant: 목포대학교산학협력단
Abstract: PURPOSE: A method for implementing an efficient embedded system of an SVM-based sound classifier proper for a marine environment is provided to allocate different transmission rates depending on a voice signal type by accurately distinguishing the voice signal type proper for the marine environment. CONSTITUTION: An embedded system obtains two or more support vectors by learning. The embedded system checks a contribution level of each support vector. The embedded system performs discriminant computation by an SVM(Support Vector Machine) algorithm except for a support vector having a lower contribution level than a preset level.
Abstract translation: 目的：提供一种实现适用于海洋环境的基于SVM的声音分类器的高效嵌入式系统的方法，以通过准确区分适合海洋环境的语音信号类型，根据语音信号类型分配不同的传输速率。 构成：嵌入式系统通过学习获得两个或更多的支持向量。 嵌入式系统检查每个支持向量的贡献级别。 嵌入式系统通过SVM（支持向量机）算法执行判别式计算，除了具有比预设级别低的贡献级别的支持向量。
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公开(公告)号：KR1020130037429A
公开(公告)日：2013-04-16
申请号：KR1020110101824
申请日：2011-10-06
Applicant: 목포대학교산학협력단
CPC classification number: H03M13/3927 , H04L27/18
Abstract: PURPOSE: A high order modulation demapping communication method is provided to offer an optimum bit separation method for demodulating 8PSK, 16APSK and 32 APSK modulation signals. CONSTITUTION: A high order modulation demapping communication method applying an adaptive modulation method in marine time communication includes a stage of applying an approximate formula omitting a logarithmic calculation process and an exponential process in an LLR(Log Likelihood Ratio) method and a stage of determining a reception bit by calculating a distance between a reception signal and a mapping point of a constellation after omitting a multiplication part multiplying a channel estimation value in an approximate formula.
Abstract translation: 目的：提供一种高阶调制解映射通信方法，为解调8PSK，16APSK和32 APSK调制信号提供最佳的比特分离方法。 构成：在海洋时间通信中应用自适应调制方法的高阶调制解映射通信方法包括在LLR（对数似然比）方法中应用省略对数计算处理和指数处理的近似公式的阶段以及确定 通过计算在省略乘以近似公式的信道估计值的乘法部分之后的星座的接收信号和映射点之间的距离的接收比特。
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公开(公告)号：KR1020130037047A
公开(公告)日：2013-04-15
申请号：KR1020110101367
申请日：2011-10-05
Applicant: 목포대학교산학협력단
Abstract: PURPOSE: A PFMIPv6 based vertical handover method is provided to continuously offer a multimedia service by connecting various APs(Access Point) through a terminal including a multi-wireless interface. CONSTITUTION: When a report message is transmitted by an MIHF(Media Independent Handover Function) of a corresponding terminal, the MIHF transmits a network layer message which notifies the initialization of handover to a previous MAG(Mobile Access Gateway). When the previous MAG receives the layer message, the previous MAG previously transmits information which is the same as an MN-ID(Mobile Node-Identification) and LMAA to a new MAG. After an IP(Internet Protocol) address is set, the new MAG transmits a PBU(Proxy Binding Update) message and receives PBA(Proxy Binding Acknowledgement).
Abstract translation: 目的：提供基于PFMIPv6的垂直切换方法，通过包括多无线接口的终端连接各种AP（接入点）来连续提供多媒体业务。 构成：当通过相应终端的MIHF（媒体独立切换功能）发送报告消息时，MIHF将通知初始化切换的网络层消息发送到先前的MAG（移动接入网关）。 当先前的MAG接收到层消息时，先前的MAG先前将与MN-ID（移动节点识别）和LMAA相同的信息发送到新的MAG。 在设置IP（因特网协议）地址之后，新的MAG发送PBU（代理绑定更新）消息并接收PBA（代理绑定确认）。
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公开(公告)号：KR1020130022793A
公开(公告)日：2013-03-07
申请号：KR1020110085706
申请日：2011-08-26
Applicant: 목포대학교산학협력단
Abstract: PURPOSE: A hierarchical routing method for supporting the movement of a synchronization node in a wireless sensor network is provided to allow a routing path to avoid an inefficient path by enabling a mobile synchronization node to transmit a message for updating a routing table. CONSTITUTION: The existence of a single node is determined(S240). When there is a single node, the continuity of a cluster head is determined(S245). When the cluster head was selected with third time in succession, a routing path is updated(S250). A near node is registered in an NNT(Neighbor Node Table)(S255). A node which is far from the NNT is eliminated(S260). [Reference numerals] (AA) Start; (BB) Early NNT setting step; (CC,FF,HH) No; (DD,GG,II) Yes; (JJ) End; (S210) Searching neighboring nodes; (S215) Does an identical ID exists in the NNT?; (S220) Setting a D type; (S225) Setting an N type; (S230) Setting 1 for 4 near nodes and 0 for a far node; (S235) Registering in the NNT; (S240) Is there a node with the N type and 1?; (S245) Is a cluster head continuously selected three times?; (S250) Updating a routing path; (S255) Setting 0 for the near nodes, and registering in the NNT; (S260) Removing the far node from the NNT
Abstract translation: 目的：提供用于支持无线传感器网络中的同步节点的移动的分层路由方法，以允许路由路径通过使移动同步节点发送用于更新路由表的消息来避免低效路径。 规定：确定单个节点的存在（S240）。 当存在单个节点时，确定簇头的连续性（S245）。 当连续第三次选择簇头时，路由路径被更新（S250）。 在NNT（邻居节点表）中登记近端节点（S255）。 远离NNT的节点被消除（S260）。 （附图标记）（AA）开始; （BB）早期NNT设定步骤; （CC，FF，HH）否; （DD，GG，II）是; （JJ）结束; （S210）搜索邻近节点; （S215）NNT中是否存在相同的ID？ （S220）设定D型; （S225）设定N型; （S230）设置1为4个近点节点，0为远节点; （S235）在NNT中注册; （S240）有N节点和1节点吗？ （S245）是否连续选择三个簇头？ （S250）更新路由路径; （S255）为邻近节点设置0，并在NNT中注册; （S260）从NNT中删除远端节点
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公开(公告)号：KR1020130022782A
公开(公告)日：2013-03-07
申请号：KR1020110085687
申请日：2011-08-26
Applicant: 목포대학교산학협력단
Abstract: PURPOSE: An indoor positioning system and a method thereof are provided to accurately estimate a distance between nodes by minimizing an error rate using delay time estimation. CONSTITUTION: A transmission node(100) generates and transmits a transmission packet including multiple identical symbols. A receiving node(200) receives a transmission packet transmitted from a transmission node and estimates a delay time by using a matrix pencil algorithm and symbols included in the received transmission packet. [Reference numerals] (100) Transmission node; (110,230) Symbol generation unit; (120) Packet generation unit; (130) Wireless communication unit; (200) Receiving node; (210) Wireless communication unit; (220) Symbol leveling unit; (240) Frequency response estimation unit; (250) Delay time estimation unit; (260) Distance calculation unit
Abstract translation: 目的：提供一种室内定位系统及其方法，以通过使用延迟时间估计最小化误差率来精确估计节点之间的距离。 构成：发送节点（100）生成并发送包含多个相同符号的发送分组。 接收节点（200）接收从发送节点发送的发送分组，并且通过使用包括在所接收的发送分组中的矩阵铅笔算法和符号来估计延迟时间。 （附图标记）（100）传输节点; （110,230）符号生成单位; （120）分组生成单元; （130）无线通信单元; （200）接收节点; （210）无线通信单元; （220）符号调平单元; （240）频率响应估计单元; （250）延迟时间估计单位; （260）距离计算单位
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