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公开(公告)号：KR1020120127567A
公开(公告)日：2012-11-22
申请号：KR1020120120622
申请日：2012-10-29
Applicant: 한국전자통신연구원
IPC: H04L12/407
CPC classification number: H04L12/427
Abstract: PURPOSE: A super frame structure for mesh networking and beacon scheduling method is provided to easily adapt to the conversion of a network environment by executing a beacon scheduling in a distribution method. CONSTITUTION: A join node acquires the neighbor node beacon allocation information of the neighbor node from the beacon of the received neighbor node(S203). The join node selects an empty beacon slot(S205). A node selected by a beacon slot periodically transmits beacon to the corresponding beacon slot(S211). When the beacon is not received from the neighbor node, the joint node forms a network(S207). The joint node selects the beacon slot of a first super frame within space between beacons(S209). [Reference numerals] (AA) Start; (BB) No; (CC) Yes; (DD) Finish; (S201) Scanning beacons; (S203) Receiving beacons from neighboring nodes; (S205) Selecting an empty super frame; (S207) Forming a network; (S209) Selecting a first super frame; (S211) Periodically transmitting beacons from a beacon slot of the selected super frame
Abstract translation: 目的：提供一种网状网络和信标调度方法的超帧结构，通过在分发方式中执行信标调度，轻松适应网络环境的转换。 构成：连接节点从接收到的邻居节点的信标获取邻居节点的邻居节点信标分配信息（S203）。 连接节点选择空信标时隙（S205）。 由信标时隙选择的节点周期性地向对应的信标时隙发送信标（S211）。 当没有从邻居节点接收到信标时，联合节点形成网络（S207）。 联合节点选择信标之间的空间内的第一超帧的信标时隙（S209）。 （附图标记）（AA）开始; （BB）否 （CC）是; （DD）完成; （S201）扫描信标; （S203）从相邻节点接收信标; （S205）选择空超帧; （S207）组建网络; （S209）选择第一超帧; （S211）从所选择的超帧的信标时隙周期性发送信标
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公开(公告)号：KR1020120127358A
公开(公告)日：2012-11-21
申请号：KR1020120108276
申请日：2012-09-27
Applicant: 한국전자통신연구원 , 리서치 파운데이션 오브 더 시티 유니버시티 오브 뉴욕
CPC classification number: H04W72/04 , H04W72/1257 , H04W72/1278 , H04W74/02 , Y02D70/144
Abstract: PURPOSE: A MAC(Multiple Access Computer) system of a multi-hop sensor network is provided to remarkably reduce transmission delay for waiting OSD(On Screen Display) in each hop in the multi-hop sensor network. CONSTITUTION: A node(3) which requests the allocation of a GTS(Guaranteed Time Slot) transmits GTS information and EGTS(Extended Guaranteed Time Slot) request frame to a reception node(2). The reception node selects a slot for collecting the received information and node information. The reception node transmits an EGTS response frame to the node and neighbor nodes. The node informs the allocated slot number to the neighbor nodes by transmitting an EGTS notification frame.
Abstract translation: 目的：提供多跳传感器网络的MAC（多路访问计算机）系统，显着降低了多跳传感器网络中每一跳等待OSD（On Screen Display）的传输延迟。 构成：请求分配GTS（保证时隙）的节点（3）向接收节点（2）发送GTS信息和EGTS（扩展保证时隙）请求帧。 接收节点选择用于收集接收的信息和节点信息的时隙。 接收节点向节点和邻居节点发送EGTS响应帧。 节点通过发送EGTS通知帧来向相邻节点通知分配的时隙号。
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公开(公告)号：KR1020100121411A
公开(公告)日：2010-11-17
申请号：KR1020100036812
申请日：2010-04-21
Applicant: 한국전자통신연구원 , 리서치 파운데이션 오브 더 시티 유니버시티 오브 뉴욕
CPC classification number: H04W72/02 , H04W72/0453 , H04W72/085 , H04W84/18
Abstract: PURPOSE: An asynchronous multichannel adaptation method for saving the resources of the entire network in a wireless AD hoc network is provided to improve the reliability and expandability of data transmission. CONSTITUTION: A new node participating in a wireless ad hoc network searches a channel(S10). The new node selects its own reception channel. The new node transmits the reception channel information to a peripheral node(S20). The new node obtains circumferential channel information. The new node as performs the channel modification(S30).
Abstract translation: 目的：提供一种用于在无线自组织网络中节省整个网络的资源的异步多信道自适应方法，以提高数据传输的可靠性和可扩展性。 构成：参与无线自组织网络的新节点搜索频道（S10）。 新节点选择自己的接收频道。 新节点将接收频道信息发送到外围节点（S20）。 新节点获取周边信道信息。 新节点执行频道修改（S30）。
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公开(公告)号：KR1020100053428A
公开(公告)日：2010-05-20
申请号：KR1020090074003
申请日：2009-08-11
Applicant: 한국전자통신연구원
IPC: H04B1/715 , H04B1/7143
CPC classification number: H04B1/7143 , H04B7/2656 , Y02D70/142 , Y02D70/144 , Y02D70/22 , Y02D70/40 , Y02D70/449
Abstract: PURPOSE: A distributed channel hopping method in a wireless ad-hoc network is provided to transmit beacon frames steadily by preventing collision among the beacon frames. CONSTITUTION: A connecting node receives a beacon frame of adjacent nodes(S510). The connecting node selects one of available offsets(S530). A association request message is transmitted to one of among adjacent nodes(S540). If the selected offset is available, the node transmits acknowledge about the association request message(S550,S560). The adjacent nodes add the connecting node to the adjacent node(S570).
Abstract translation: 目的：提供无线自组织网络中的分布式信道跳频方法，通过防止信标帧之间的冲突，稳定地发送信标帧。 构成：连接节点接收相邻节点的信标帧（S510）。 连接节点选择可用偏移之一（S530）。 关联请求消息被发送到相邻节点之一（S540）。 如果所选择的偏移可用，则节点发送关于关联请求消息的确认（S550，S560）。 相邻节点将连接节点添加到相邻节点（S570）。
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公开(公告)号：KR1020090063039A
公开(公告)日：2009-06-17
申请号：KR1020080004589
申请日：2008-01-15
Applicant: 한국전자통신연구원
Abstract: A vehicle detection apparatus and an operation method thereof are provided to minimize unnecessary power consumption, thereby operating for a longer time. A vehicle detection apparatus waits until an operation command is received from a corresponding access point(S106). The vehicle detection apparatus transmits generated vehicle detection information to the access point(S109). The vehicle detection apparatus maintains a normal mode during predetermined time based on a changing period of an operation mode and repeatedly performs a vehicle detection operation and a transmission operation of vehicle detection information(S110). If a changing period of the operation mode is reached, the vehicle detection apparatus enters into a sleep mode and maintains the sleep mode during predetermined time(S111).
Abstract translation: 提供车辆检测装置及其操作方法以最小化不必要的功率消耗，从而操作更长时间。 车辆检测装置等待直到从对应的接入点接收到操作命令（S106）。 车辆检测装置将生成的车辆检测信息发送到接入点（S109）。 车辆检测装置基于操作模式的变化期间在预定时间内保持正常模式，并且重复执行车辆检测操作和车辆检测信息的发送操作（S110）。 如果达到操作模式的改变时段，车辆检测装置进入睡眠模式并在预定时间内保持睡眠模式（S111）。
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Patent Agency Ranking
公开(公告)号：KR1020090060931A
公开(公告)日：2009-06-15
申请号：KR1020080066726
申请日：2008-07-09
IPC: H04L12/28
Abstract: A cross layer based routing method in a wireless sensor network is provided to supply an algorithm which provides optimal and stable routing in an instable communication environment, thereby improving the entire network performance. A source node generating data grasps a location of a destination node(S310). An optimum relay node is selected by using location information of adjacent nodes at every hop so that data is transmitted from the source node to the destination node through relay nodes(S330). The data includes an identification number and coordinate of the source node, an identification number and coordinate of the source node, an identification number and coordinate of a target node, and a message identification number of the data.
Abstract translation: 提供了一种在无线传感器网络中的基于交叉层的路由方法来提供在不稳定的通信环境中提供最佳和稳定的路由的算法，从而提高整个网络性能。 产生数据的源节点掌握目的地节点的位置（S310）。 通过使用每跳的相邻节点的位置信息来选择最佳中继节点，从而通过中继节点从源节点向目的地节点发送数据（S330）。 数据包括源节点的标识号和坐标，源节点的标识号和坐标，目标节点的标识号和坐标，以及数据的消息标识号。
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公开(公告)号：KR1020080050982A
公开(公告)日：2008-06-10
申请号：KR1020070081763
申请日：2007-08-14
Applicant: 한국전자통신연구원
CPC classification number: H04W72/0446 , H04W72/1257 , H04W72/1278 , H04W84/18
Abstract: A beacon slot reallocation method for beacon scheduling is provided to reduce a waste of beacon slot resources, and improve the performance of a network by reducing a data transmission time. A sensor node receives beacon information of 1-hop neighbor nodes and beacon information of 2-hop neighbor nodes of the 1-hop neighbor nodes(601) and makes a beacon information list including the received beacon information and its beacon information(602). The sensor node checks whether or not its lower node wants to participate in a network(603). If a lower node of the sensor node wants to participate in the network, the sensor node allocates a beacon slot that does not collide with the lower node among beacon slots already allocated to other sensor nodes, as a beacon slot of the lower node(604).
Abstract translation: 提供用于信标调度的信标时隙再分配方法以减少信标时隙资源的浪费，并且通过减少数据传输时间来提高网络的性能。 传感器节点接收1跳邻居节点（601）的2跳邻居节点的1跳邻居节点信标信息和信标信息，并形成包含接收到的信标信息及其信标信息的信标信息（602）。 传感器节点检查其下层节点是否要参与网络（603）。 如果传感器节点的较低节点想要参与网络，则传感器节点在已经分配给其他传感器节点的信标时隙中分配不与下层节点冲突的信标时隙作为下层节点（604）的信标时隙 ）。
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公开(公告)号：KR100639965B1
公开(公告)日：2006-11-01
申请号：KR1020040083199
申请日：2004-10-18
Applicant: 한국전자통신연구원
IPC: H04B7/26
Abstract: 본 발명에 의한 차량환경에서의 핸드오버 방법은 차량탑재장치와 통신중인 제1노변장치가 상기 차량탑재장치의 핸드오버를 지원하는 방법에 있어서, 상기 차량탑재장치로부터 그 위치정보와 핸드오버정보를 수신하는 단계; 상기 위치정보를 기초로 핸드오버후 통신을 수행할 제2노변장치를 결정하고 상기 제2노변장치와 핸드오버에 필요한 정보를 송수신하는 단계; 및 상기 차량탑재장치로 핸드오버 명령을 송신하는 단계;를 포함하는 것을 특징으로 하며, 시속 200Km 이하의 텔레매틱스 차량 이동 환경에서 텔레매틱스 차량 무선 통신 시스템의 WAVE 노변장치와 WAVE차량 탑재 장치 사이에 핸드오버를 제공하여 텔레매틱스 서비스를 끊김 없이 제공하게 된다.
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公开(公告)号：KR100581291B1
公开(公告)日：2006-05-17
申请号：KR1020030097944
申请日：2003-12-26
Applicant: 한국전자통신연구원
IPC: H04B7/00
Abstract: 본 발명은 고속 및 저속 단거리 전용 통신 시스템의 통신 방식을 모두 지원하는 이중모드 단거리 전용 통신 시스템 및 그 방법에 관한 것이다.
이중모드 단거리 전용 통신 시스템 및 그 방법은, 저속 단거리 전용 통신(Dedicated Short Range Communication, DSRC) 영역과 고속 DSRC 영역에서의 각 노변장치와 차량 탑재 장치 간에 통신을 수행하는 환경 하에서, 차량 탑재 장치는 노변장치로부터 수신신호가 입력되면 수신 신호에서 프리엠블을 검출하여 저속 DSRC/고속 DSRC 프리엠블인지를 확인하고, 저속 DSRC 프리엠블이면 저속 DSRC 통신 모드로, 고속 DSRC 프리엠블이면 고속 DSRC 통신 모드로 상기 수신 신호를 처리하도록 한다. 이와 같이 하면, 어떤 DSRC 시스템과의 호환성을 보장할 수 있고, 사용자가 별도의 차량 탑재 장치를 구입할 필요가 없어 경제적이다.
단거리 전용 통신 시스템, 노변 장치, 차량 탑재 장치 -
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