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公开(公告)号：KR1020130104192A
公开(公告)日：2013-09-25
申请号：KR1020120025480
申请日：2012-03-13
Applicant: 광주과학기술원
CPC classification number: H04L45/24 , H04L45/3065 , H04L47/283
Abstract: PURPOSE: A routing method in multi route data communications and an apparatus thereof are provided to appropriately determine a set of routes and the number of routes which are required to control a plant in arbitrary network topology with the sufficient number of routes. CONSTITUTION: A failure probability measurement unit (100) measures a failure probability of data communications that at least one of the routes does not meet communication constraints based on the round trip time (RTT) of data which is measured through N routes. A routing unit (200) determines routes for data communications by adding a route to the N routes or deleting a route depending on the measured failure probability. A data transmission unit (300) transmits the data through the communication routes. [Reference numerals] (110) Shuttle time data input unit; (120) Limitation condition check unit; (130) Failure check unit; (140) Failure rate measurement unit; (210) Design variable comparison unit; (220) Route addition unit; (230) Route deletion unit; (300) Data transmission unit; (AA) Data packet; (RTT) Shuttle time
Abstract translation: 目的：提供多路数据通信中的路由方法及其装置，以适当确定一组路由和路由数量，以便以足够数量的路由来控制任意网络拓扑中的工厂。 构成：故障概率测量单元（100）基于通过N个路由测量的数据的往返时间（RTT）来测量至少一个路由不满足通信约束的数据通信的故障概率。 路由单元（200）通过向N个路由添加路由或根据测量的故障概率来删除路由来确定用于数据通信的路由。 数据传输单元（300）通过通信路由发送数据。 （附图标记）（110）穿梭时间数据输入单元; （120）限制条件检查单位; （130）故障检查单位; （140）故障率测量单位; （210）设计变量比较单元; （220）路线增加单位; （230）路由删除单元; （300）数据传输单元; （AA）数据包; （RTT）班车时间
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公开(公告)号：KR101260415B1
公开(公告)日：2013-05-07
申请号：KR1020080097745
申请日：2008-10-06
Applicant: 광주과학기술원
IPC: H04L12/28
Abstract: 멀티홉 무선네트워크에서의혼잡제어방법및 이를수행하는장치를제공한다. 혼잡제어방법은멀티홉 무선네트워크에있어서, 혼잡제어대상노드에이웃한적어도하나의이웃노드로부터큐에채워진데이터의개수를나타내는큐 길이정보를수신하는단계; 상기수신한적어도하나의큐 길이정보를이용하여상기혼잡제어대상노드의혼잡여부를결정하는단계; 및상기혼잡제어대상노드의혼잡여부결정에따라상기혼잡제어대상노드의혼잡을제어하는단계를포함하여구성될수 있다. 따라서혼잡이발생한노드에서최대한많은패킷을처리할수 있도록많은채널접근기회를제공할수 있다. 또한, 네트워크내에서패킷손실을줄이고종단간 처리율(throughput)을향상시킬수 있다.
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公开(公告)号：KR101217861B1
公开(公告)日：2013-01-02
申请号：KR1020100126637
申请日：2010-12-13
Applicant: 광주과학기술원
IPC: H04L12/28
Abstract: 본발명의실시예에따르면, 송신단말은응용계층의연속적인데이터를파운틴코드-여기서파운틴코드는이레이저(Erasure) 채널로표현되는네트워크상에서다수에게전송하는브로드캐스팅및 멀티캐스팅에적합하도록개발된채널부호화기술임-를이용하여인코딩한다. 그리고파운틴코드로인코딩된패킷을둘 이상의서로다른네트워크경로를통하여전송한다. 그러면, 수신단말은파운틴코드로인코딩된패킷을수신순서에관계없이디코딩하고, 인코딩된패킷에추가된파운틴헤더를이용하여디코딩한다.
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公开(公告)号：KR100964187B1
公开(公告)日：2010-06-17
申请号：KR1020080066727
申请日：2008-07-09
CPC classification number: H04W4/00
Abstract: 무선 네트워크의 PCS 임계값 조정방법 및 PCS 기반의 단말장치가 개시된다. 이 방법 및 장치는 무선 네트워크 상에서 데이터를 전송할 공유 채널의 혼잡 정도를 기초로 공유 채널의 사용에 관한 PCS 임계값의 조정여부를 결정하고, 일정 주기 동안 측정한 패킷 손실률을 기초로 PCS 임계값을 조정한다. 본 발명에 따르면, 전체적인 네트워크 쓰루풋(throughput)을 높이는 등의 무선 네트워크의 성능을 향상시킨다.
무선 네트워크, PCS(Physical Carrier Sensing), CSMA/CA, 채널 혼잡, 패킷 손실률-
公开(公告)号：KR1020100006484A
公开(公告)日：2010-01-19
申请号：KR1020080066727
申请日：2008-07-09
Abstract: PURPOSE: A PCS critical value control method and a terminal device of a mobile network using the congestion of a shared channel are provided to improve the performance of the whole network by blocking PCS critical value control maximizing the spatial reuse. CONSTITUTION: An adjustment decision unit(210) decides the control of a PCS(PHYsical Carrier Sensing) critical value deciding the idle state of the shared channel based on the congestion of a shared channel. A critical value control unit(220) adjusts the PCS critical value based on a packet loss rate. A channel state determiner(230) decides the idle state of the shared channel based on the size of the signal from the mobile network and PCS critical value.
Abstract translation: 目的：提供使用共享信道拥塞的移动网络的PCS临界值控制方法和终端设备，通过阻止最大化空间重用的PCS临界值控制来提高整个网络的性能。 构成：调整决定单元（210）基于共享信道的拥塞来决定PCS（PHYsical Carrier Sensing）临界值的控制，从而决定共享信道的空闲状态。 临界值控制单元（220）基于分组丢失率来调整PCS临界值。 信道状态确定器（230）基于来自移动网络的信号的大小和PCS临界值来确定共享信道的空闲状态。
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Patent Agency Ranking
公开(公告)号：KR1020090040628A
公开(公告)日：2009-04-27
申请号：KR1020070106079
申请日：2007-10-22
Applicant: 광주과학기술원
IPC: H04L12/28
Abstract: A method for controlling channel access in a repeater node of a multi-hop network, and a repeater in a multi-hop network system are provided to increase the throughput performance of an entire network by performing a back-off process after updating a minimum competition window value of the repeater node according to traffic transfer ability in each repeater node. A variable width of CWmini(Minimum Competition Window) is obtained by using the number of measured receiving packets, the number of measured transmitting packets and predetermined setup values(S430). By uniting the CWmini that A current repeater node uses with the variable width of the CWmini, a CWmini in ith repeater node is calculated(S440). Back-off time is obtained by using the calculated CWmini, and a channel access control operation is performed by adopting a back-off algorithm(S450).
Abstract translation: 提供一种用于控制多跳网络的中继器节点中的信道接入的方法，以及多跳网络系统中的中继器，用于通过在更新最小竞争后执行退避处理来提高整个网络的吞吐量性能 根据每个中继器节点的流量传输能力，中继器节点的窗口值。 通过使用测量的接收分组的数量，测量的发送分组的数量和预定的设置值，获得CWmini（最小竞争窗口）的可变宽度（S430）。 通过将当前中继节点使用的CWmini与CWmini的可变宽度相结合，计算第i个中继节点中的CWmini（S440）。 通过使用计算出的CWmini获得退避时间，并且通过采用退避算法来执行信道访问控制操作（S450）。
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公开(公告)号：KR1020080103327A
公开(公告)日：2008-11-27
申请号：KR1020070050483
申请日：2007-05-23
Applicant: 광주과학기술원
IPC: G06F3/01 , G06F3/0354 , G06F3/03
CPC classification number: G06F3/014 , G06F3/017 , G06F3/0354
Abstract: A virtual key input device and a virtual method for inputting virtual keys for determining the key value determining the relatively location dislocation of fingers by touch of the contact sensor and a displacement sensor. A touch detection part(210) generates finger information corresponding to a contact sensor generating the touch sensitive signal. A motion detection unit(220) provides the displacement information of fingers corresponding to the contact sensor generating touch sensitive signal from one of a plurality of displacement sensors. A key mapping unit(230) decides a key value inputted based on the displacement information of fingers corresponding to the contact sensor.
Abstract translation: 虚拟键输入装置和虚拟方法，用于输入用于确定通过接触传感器和位移传感器的触摸确定手指的相对位置错位的键值的虚拟键。 触摸检测部件（210）产生与产生触敏信号的接触传感器对应的手指信息。 运动检测单元（220）提供与从多个位移传感器之一产生触敏信号的接触传感器对应的手指的位移信息。 键映射单元（230）基于与接触传感器对应的手指的位移信息来确定输入的键值。
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