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公开(公告)号：KR1020130022788A
公开(公告)日：2013-03-07
申请号：KR1020110085700
申请日：2011-08-26
Applicant: 목포대학교산학협력단
CPC classification number: H04W36/023 , H04L47/29 , H04L47/32
Abstract: PURPOSE: A packet forwarding control method for improving a TCP(Transmission Control Protocol) performance is provided to allow a user to use a smooth handoff method and a RED(Random Early Detection) buffer management method in a mobile IP(Internet Protocol) path optimization process. CONSTITUTION: A portable terminal forwards packets received from a terminal corresponding to a first FA(Foreign Agent) to a second FA via a buffer of a base station. The corresponding terminal does not catch an access point of the portable terminal. The base station manages the first FA. The base station determines a forwarding process or a discarding process for packets based on RED state information.
Abstract translation: 目的：提供一种用于改善TCP（传输控制协议）性能的分组转发控制方法，以允许用户在移动IP（因特网协议）路径优化中使用平滑切换方法和RED（随机早期检测）缓冲器管理方法 处理。 构成：便携式终端经由基站的缓冲器将从与第一FA（外部代理）对应的终端接收的分组转发到第二FA。 相应的终端没有抓住便携式终端的接入点。 基站管理第一FA。 基站基于RED状态信息确定分组的转发处理或丢弃处理。
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公开(公告)号：KR1020130022784A
公开(公告)日：2013-03-07
申请号：KR1020110085689
申请日：2011-08-26
Applicant: 목포대학교산학협력단
CPC classification number: H04L47/56 , H04L47/522
Abstract: PURPOSE: A resource allocation method for a network in a ship is provided to relatively divide delay time guaranteed by each sub-class according to a buffer size required by differentiating the amount of a bandwidth. CONSTITUTION: The amount of a bandwidth allocated in each AS(Assured Service) sub-class is differentiated. Delay time guaranteed by each AS sub-class according to a requested buffer size is divided. An RIO(Random early detection with In and Out) variable value is set based on a buffer size determined according to a network topology and a ratio of the bandwidth. The size of an output link bandwidth, which is reference for access control, is set by receiving the RIO variable value.
Abstract translation: 目的：提供一种用于船舶网络的资源分配方法，以根据区分带宽量所需的缓冲区大小相对分割每个子类保证的延迟时间。 规定：每个AS（Assured Service）子类中分配的带宽量是有差异的。 每个AS子类根据请求的缓冲区大小保证的延迟时间被划分。 基于根据网络拓扑和带宽比率确定的缓冲区大小设置RIO（随机早期检测，具有In和Out）变量值。 通过接收RIO变量值来设置作为访问控制参考的输出链路带宽的大小。
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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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公开(公告)号：KR1020130022779A
公开(公告)日：2013-03-07
申请号：KR1020110085684
申请日：2011-08-26
Applicant: 목포대학교산학협력단
CPC classification number: H04W36/023 , H04L47/32 , H04L47/50
Abstract: PURPOSE: A buffer management method in a mobile IP(Internet Protocol) network for ocean telematics is provided to manage TCP flows which passes through a congested base station by using a base station packet buffering method. CONSTITUTION: It is determined whether a portable terminal is moved to a congested base station of a sub-network. When the portable terminal is moved to the congested base station, influence on TCP flows is confirmed by considering hand-off arrival distribution in the congested base station. The TCP flows passes through the congested base station by using a predetermined base station packet buffering method. A buffer is managed by a drop-tail method and an RED(Random Early Detection) method according to the hand-off arrival distribution.
Abstract translation: 目的：提供用于海洋远程信息处理的移动IP（互联网协议）网络中的缓冲管理方法，以便通过使用基站分组缓冲方法来管理通过拥塞基站的TCP流。 构成：确定便携式终端是否移动到子网的拥塞基站。 当便携式终端移动到拥塞的基站时，通过考虑在拥塞的基站中的切换到达分布来确认对TCP流的影响。 TCP流通过使用预定的基站分组缓冲方法通过拥塞的基站。 根据切换到达分布，通过下拉方法和RED（随机早期检测）方法来管理缓冲器。
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公开(公告)号：KR1020130021972A
公开(公告)日：2013-03-06
申请号：KR1020110084579
申请日：2011-08-24
Applicant: 목포대학교산학협력단
IPC: H04B7/04
CPC classification number: H04B7/0413 , H03M13/1102 , H03M13/1125
Abstract: PURPOSE: A log-likelihood ratio(LLR) estimation method in a multi-input multi-output(MIMO) channel is provided to separate a soft-decision bit without performance degradation by using a candidate vector. CONSTITUTION: A mapping point is selected as a candidate vector. The mapping point is located within a predetermined range based on I-ch and Q-ch values of receiving signals among mapping points estimated in a receiving end. Log-likelihood computation is performed by using the selected candidate vector. The log-likelihood computation is performed by reflecting the number of transmitting antennas, the number of receiving antennas, and a modulation method for dividing the receiving signals into data of the number of transmitting antennas. [Reference numerals] (AA) Selected four candidate vectors with the same sign as that of a receiving signal; (BB) Receiving signal
Abstract translation: 目的：提供多输入多输出（MIMO）信道中的对数似然比（LLR）估计方法，以通过使用候选向量来分离软判决比特而不降低性能。 构成：选择一个映射点作为候选向量。 基于在接收端估计的映射点之间的接收信号的I-ch和Q-ch值，映射点位于预定范围内。 通过使用选择的候选向量来执行对数似然计算。 通过将发送天线的数量，接收天线的数量和用于将接收信号分割为发送天线数的数据的调制方法进行对数似然计算。 （附图标记）（AA）选择与接收信号具有相同符号的四个候选向量; （BB）接收信号
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Patent Agency Ranking
公开(公告)号：KR1020130019907A
公开(公告)日：2013-02-27
申请号：KR1020110082212
申请日：2011-08-18
Applicant: 목포대학교산학협력단
Abstract: PURPOSE: A cluster head selecting method within a sensor network is provided to select a cluster head by using the location information of sensor nodes. CONSTITUTION: A sensor network system determines a center position of a sensor network by using positions of all sensor nodes in an initial data transmission period(S210). The sensor network system divides areas of the sensor network by using the center position(S220). The sensor network system detects a sensor node which includes a minimum distance value between the sensor nodes(S230). The sensor network system selects the detected sensor node as a cluster head. [Reference numerals] (AA) Start; (BB) End; (S210) Determining the center position of a sensor network by using position information of all sensor nodes; (S220) Dividing the sensor network into preset numbers by using the center position; (S230) Selecting a sensor node which includes the minimum sum of distances between sensor nodes in each area as a cluster head; (S240) Receiving data from a sink node; (S250) Selecting a cluster head among sensor nodes which are never been selected as a cluster head
Abstract translation: 目的：提供传感器网络内的簇头选择方法，通过使用传感器节点的位置信息来选择簇头。 规定：传感器网络系统通过在初始数据传输周期中使用所有传感器节点的位置来确定传感器网络的中心位置（S210）。 传感器网络系统通过使用中心位置来分割传感器网络的区域（S220）。 传感器网络系统检测传感器节点，传感器节点包括传感器节点之间的最小距离值（S230）。 传感器网络系统选择检测到的传感器节点作为簇头。 （附图标记）（AA）开始; （BB）结束; （S210）通过使用所有传感器节点的位置信息确定传感器网络的中心位置; （S220）使用中心位置将传感器网络分为预设号码; （S230）选择传感器节点，其包括每个区域中的传感器节点之间的距离的最小值作为簇头; （S240）从汇聚节点接收数据; （S250）从未被选择为簇头的传感器节点中选择簇头
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公开(公告)号：KR1020130017135A
公开(公告)日：2013-02-20
申请号：KR1020110079389
申请日：2011-08-10
Applicant: 목포대학교산학협력단
CPC classification number: H04W64/003 , H04W36/08 , H04W84/18
Abstract: PURPOSE: An indoor location recognition system and a location recognition method thereof are provided to accurately determine a location by supporting multiple cells or multiple tags in a wireless sensor network. CONSTITUTION: One or more location recognition devices(110) include a tag. The location recognition device transmits packets for determining a location. A coordinator anchor(120d) selects a specific location recognition device for determining the location from the one or more location recognition device by allocating time slots. A plurality of anchors responds for the packets transmitted from the selected specific location recognition device. The location recognition device determines a location by measuring packet response time from the anchors. [Reference numerals] (110) Location recognition device; (120a,120b,120c) Anchor; (120d) Coordinator anchor
Abstract translation: 目的：提供室内位置识别系统及其位置识别方法，通过支持无线传感器网络中的多个小区或多个标签来准确地确定位置。 构成：一个或多个位置识别装置（110）包括标签。 位置识别装置发送用于确定位置的分组。 协调器锚（120d）通过分配时隙来选择特定位置识别装置，用于通过一个或多个位置识别装置确定位置。 多个锚对从所选择的特定位置识别装置发送的包进行响应。 位置识别装置通过测量锚点的分组响应时间来确定位置。 （附图标记）（110）位置识别装置; （120a，120b，120c）锚; （120d）协调员锚
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108.发明公开
公开(公告)号：KR1020130011358A
公开(公告)日：2013-01-30
申请号：KR1020110072459
申请日：2011-07-21
Applicant: 목포대학교산학협력단
CPC classification number: Y02D70/00 , H04W52/0261 , H04W56/00 , H04W84/18
Abstract: PURPOSE: A method for improving the delay time performance improvement and energy efficiency of asynchronous duty-cycle MAC in a vessel sensor network environment is provided to improve a transmission delay time by performing a temporary synchronization method while maintaining the energy efficiency of asynchronous MAC. CONSTITUTION: Energy efficiency is maintained through an SNC(Synchronize on each Neighbor's Cycle) and an STC(Synchronize on Tunneling Cycle) function by using a cross layer method with a network layer. A transmission delay time is improved by performing a temporary synchronization method while maintaining the energy efficiency. QoS(Quality of Service) on a multi hop path is guaranteed.
Abstract translation: 目的：提供一种在船舶传感器网络环境中改进异步占空比MAC的延迟时间性能改进和能效的方法，通过执行临时同步方法来提高传输延迟时间，同时保持异步MAC的能量效率。 构成：通过使用具有网络层的交叉层方法，通过SNC（在每个邻居周期上同步）和STC（隧道周期同步）功能来维持能量效率。 通过在保持能量效率的同时执行临时同步方法来提高传输延迟时间。 多跳路径上的QoS（服务质量）得到保证。
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公开(公告)号：KR1020130006914A
公开(公告)日：2013-01-18
申请号：KR1020110062264
申请日：2011-06-27
Applicant: 목포대학교산학협력단
CPC classification number: H04B17/0082 , H03M13/11 , H04B13/02 , H04L1/0618 , H04L25/0204
Abstract: PURPOSE: An underwater communication channel performance analyzing method in a MISO(Multiple Input Single Output) channel using an LDPC(Low Density Parity Check) symbol is provided to increase the performance of BER(Bit Error Rate) by using an LEDPC. CONSTITUTION: In case of applying an MISO communication channel, it is determined whether the other symbol is transmitted. An analysis result is supplied as analyzing performance of an MISO communication channel and an SISO(Single Input Single Output) communication channel in underwater communication environment.
Abstract translation: 目的：提供使用LDPC（低密度奇偶校验）符号的MISO（多输入单输出）信道中的水下通信信道性能分析方法，以通过使用LEDPC来提高BER（误码率）的性能。 构成：在应用MISO通信信道的情况下，确定是否发送了其他符号。 分析结果作为水下通信环境中MISO通信信道和SISO（单输入单输出）通信信道的性能分析提供。
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公开(公告)号：KR1020130000011A
公开(公告)日：2013-01-02
申请号：KR1020110058496
申请日：2011-06-16
Applicant: 목포대학교산학협력단
CPC classification number: Y02D70/00 , H04L27/2003 , H04L27/30
Abstract: PURPOSE: A modulation method for low power communication in an underwater sensor network and a transmitting device using the same are provided to transmit a PSK signal to only a half of a symbol signal and process the other half as a silence section. CONSTITUTION: An underwater sensor network modulates a PSK signal into two of orthogonal symbols to transmit the modulated symbols. A method for low power communication in the underwater sensor network includes a stage for forming two of half cycle signals by using first bit information and a stage for transmitting the PSK signal of a (log)-1 bit. A silence section is determined by using the first bit. A transmitting signal is transmitted as a signal including position information about the modulated signal and symbol. The band efficiency of PSSK(Phase Silence Shift Keying) is a half of PSK. A receiver structure of the PSSK uses a synchronized system.
Abstract translation: 目的：提供一种用于水下传感器网络中的低功率通信的调制方法和使用该调制方法的发送装置，用于将PSK信号仅传送到符号信号的一半，并将另一半作为静音部分处理。 构成：水下传感器网络将PSK信号调制成两个正交符号以发送调制符号。 水下传感器网络中的低功率通信方法包括：通过使用第一比特信息形成两个半周期信号的阶段，以及用于发送（log）-1比特的PSK信号的阶段。 通过使用第一位来确定静音段。 作为包含关于调制信号和符号的位置信息的信号发送发送信号。 PSSK（相位静音键控）的频带效率是PSK的一半。 PSSK的接收机结构使用同步系统。
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