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公开(公告)号：KR101377308B1
公开(公告)日：2014-04-01
申请号：KR1020070072792
申请日：2007-07-20
IPC: H04B10/2581 , H04L12/24 , H04L12/28 , H04B10/00
Abstract: 본 발명은 가시광 통신을 이용한 TDMA(Time Division Multiple Access) 기반의 무선 랜 시스템에서 듀플렉스 모드(Duplex mode) 변경 방법에 있어서, 엑세스 포인트(Access Point)와 모바일 노드(Mobile Node) 간에 송수신 동작시의 비트 에러 확률과 미리 설정된 목표 비트 에러 확률을 비교하여 듀플렉스 모드의 변경이 필요한지 판단하는 과정과, 듀플렉스 모드의 변경이 필요하다고 판단한 경우, 프레임 내의 특정 타임 슬롯을 테스트 슬롯(Test Slot)으로 할당하는 과정과, 테스트 슬롯에서 새로운 듀플렉스 모드를 사용시의 비트 에러 확률이 목표 비트 에러 확률보다 낮으면 새로운 송수신 방식으로 변경하는 과정을 포함한다.
가시광 통신, TDMA, 엑세스 포인트, 모바일 노드, 반이중, 전이중-
公开(公告)号：KR101376375B1
公开(公告)日：2014-03-20
申请号：KR1020070072791
申请日：2007-07-20
IPC: H04W8/24 , H04W72/04 , H04W84/12 , H04B10/116
CPC classification number: H04B10/1149 , H04B10/116 , H04W8/24 , H04W28/26 , H04W72/04 , H04W84/12
Abstract: 본발명은가시광통신(Visible Light Communication)을이용한무선(Wireless) 랜(LAN: Local Area Network) 시스템에서모바일노드(Mobile Node)의상태표시방법에있어서, 엑세스포인트(Access Point)에서매 프레임마다미리설정된만큼의타임슬롯(Time Slot)을초기접속모바일노드의상태표시를위한미할당슬롯으로할당하고, 미리설정된만큼의타임슬롯은초기접속모바일노드의상태표시및 상향링크방향의데이터전송이가능한보류슬롯으로할당하는과정과, 초기접속모바일노드에서미할당슬롯또는보류슬롯구간에초기접속모바일노드의상태정보를표시하는가시광신호를송신하는과정을포함한다.
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公开(公告)号：KR1020140025095A
公开(公告)日：2014-03-04
申请号：KR1020120091272
申请日：2012-08-21
Applicant: 한국과학기술원
IPC: H04W16/28
CPC classification number: H04W16/28 , H04W72/046 , H04W72/082
Abstract: The present invention relates to a vehicle communication device and a communication method for the same and, more specifically, a vehicle communication device using a smart antenna and a communication method for the same, wherein the vehicle communication device provides a method for allocating a beam or beam power, capable of using a beam division multiple access method based on an adaptive beam in a communication system based on a smart antenna in which a plurality of infrastructures exists; and alleviating communication interference within a cell in which the beam facing one vehicle from one infrastructure influences the other vehicle and communication interference between cells caused by the beam facing the other vehicle from the adjacent infrastructure. [Reference numerals] (101) Communication unit; (103) Information collecting unit; (1051) Beam allocating unit; (1053) Beam power allocating unit; (107) Information providing unit; (200) Second infrastructure
Abstract translation: 车辆通信装置及其通信方法技术领域本发明涉及一种车辆通信装置及其通信方法，更具体地，涉及使用智能天线的车辆通信装置及其通信方法，其中，所述车辆通信装置提供用于分配波束的方法或 能够在基于其中存在多个基础设施的智能天线的通信系统中使用基于自适应波束的波束分割多路访问方法; 并且减轻在一个小区内的通信干扰，其中来自一个基础设施的面向一个车辆的波束影响另一个车辆，并且由相邻基础设施的面向另一车辆的波束引起的小区之间的通信干扰。 （附图标记）（101）通信单元; （103）资料收集单位; （1051）光束分配单元; （1053）光束分配单元; （107）信息提供单位; （200）第二基础设施
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公开(公告)号：KR1020130042089A
公开(公告)日：2013-04-26
申请号：KR1020110106182
申请日：2011-10-18
Applicant: 한국과학기술원
CPC classification number: H04W72/0406 , H04B7/15542 , H04W16/12 , H04W16/28
Abstract: PURPOSE: A hybrid communication network system based on BDMA(Beam Division Multiple Access) for effectively assigning resources, and a providing method thereof are provided to improve spectral efficiency in a hybrid communication network system by controlling interference in a hybrid communication network environment based on the BDMA. CONSTITUTION: A BDMA based hybrid communication network system calculates a beam allocator of a BS(Base Station) without considering interference between the BS and an RS(Relay Station). The BDMA based hybrid communication network system calculates the beam allocator of the RS based on the calculated beam allocator for one or more RSs included in the BDMA based hybrid communication network system.
Abstract translation: 目的：提供一种基于用于有效分配资源的BDMA（光束分多址）的混合通信网络系统及其提供方法，以通过基于混合通信网络环境中的干扰来控制混合通信网络系统中的频谱效率 BDMA。 构成：基于BDMA的混合通信网络系统在不考虑BS与RS（中继站）之间的干扰的情况下计算BS（基站）的波束分配器。 基于BDMA的混合通信网络系统基于所计算的用于在基于BDMA的混合通信网络系统中包括的一个或多个RS的波束分配器来计算RS的波束分配器。
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公开(公告)号：KR1020120088284A
公开(公告)日：2012-08-08
申请号：KR1020110009535
申请日：2011-01-31
CPC classification number: H04W72/0413 , H04W16/06 , H04W72/0446 , H04W72/0453
Abstract: PURPOSE: A resource allocation method in a wireless network is provided to adaptively allocate resources according to the conversion of topology in each node. CONSTITUTION: When a node is added to existed topology, the node receives a beacon message from a neighbor node(S800,S810). The node competes with the neighbor nodes for reserving a beacon slot(S820). When a collision is generated, the node notifies the collision during a beacon transmission section(S830,S840). When the collision is not generated, the node selects the beacon slot(S850). The node notifies the selected beacon slot to one hop neighbor node(S860).
Abstract translation: 目的：提供无线网络中的资源分配方法，根据每个节点拓扑的转换自适应分配资源。 构成：当节点被添加到存在的拓扑中时，节点从邻居节点接收信标消息（S800，S810）。 节点与相邻节点竞争以保留信标时隙（S820）。 当产生冲突时，节点在信标发送部分期间通知冲突（S830，S840）。 当不产生冲突时，节点选择信标时隙（S850）。 节点将所选择的信标时隙通知给一跳邻居节点（S860）。
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Patent Agency Ranking
公开(公告)号：KR1020120088283A
公开(公告)日：2012-08-08
申请号：KR1020110009534
申请日：2011-01-31
Abstract: PURPOSE: A topology control method in a wireless network is provided to simultaneously reduce the energy consumption and interference of a node by determining optimal transmission power by determining the optimal number of neighbor nodes. CONSTITUTION: Interference for interference nodes is calculated using present transmission power(S1050). A candidate neighbor node is selected from a candidate neighbor node group according to a distance(S1060). Candidate transmission power satisfied with a target SINR(Signal-to-Interference plus Noise Ratio) of the candidate neighbor node is allocated to the node(S1070). Interference generated by the candidate transmission power for an interference node is calculated(S1080). When a formula(Iic >= Ii) is satisfied, the node is included in the candidate neighbor node group(S1090,S1100).
Abstract translation: 目的：提供一种无线网络中的拓扑控制方法，通过确定最佳的邻居节点数目来确定最佳传输功率，从而同时降低节点的能量消耗和干扰。 构成：干扰节点的干扰用当前发射功率计算（S1050）。 根据距离从候选相邻节点组中选择候选相邻节点（S1060）。 将满足候选邻居节点的目标SINR（信号与干扰加噪声比）的候选传输功率分配给节点（S1070）。 计算干扰节点的候选发射功率产生的干扰（S1080）。 当满足公式（Iic> = Ii）时，节点被包括在候选相邻节点组中（S1090，S1100）。
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公开(公告)号：KR1020100097631A
公开(公告)日：2010-09-03
申请号：KR1020100048298
申请日：2010-05-24
Applicant: 한국과학기술원
IPC: G08G1/0968 , H04B7/26
CPC classification number: G08G1/0968 , G08G1/123
Abstract: PURPOSE: A car-to-car distance control method of a vehicle using traffic information offering system is provided to control the distance between vehicles by providing a service based on GPS. CONSTITUTION: A vehicles communication unit is installed in vehicles. A traffic information supply system communicates with the vehicle communication unit. The speed of a front vehicle and passing time of a current position are received from a communication unit(101) which is installed inside the road. The speed and current position of a user vehicle is received from a vehicle ahead of the user. The speed is adjusted to control the distance between the vehicles ahead of the user.
Abstract translation: 目的：提供使用交通信息提供系统的车辆的车对车距离控制方法，通过提供基于GPS的服务来控制车辆之间的距离。 规定：车辆通信单元安装在车辆中。 交通信息提供系统与车辆通信单元通信。 从安装在道路内部的通信单元（101）接收前车辆的速度和当前位置的通过时间。 从使用者前方的车辆接收用户车辆的速度和当前位置。 调整速度以控制用户之前的车辆之间的距离。
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公开(公告)号：KR100933130B1
公开(公告)日：2009-12-21
申请号：KR1020080018599
申请日：2008-02-28
IPC: H04B7/26
Abstract: A band AMC sub-channel allocation method in a portable internet system for transiting a normal sub-channel mode into a band AMC sub-channel mode is provided to transit the sub channel to the band AMC sub-channel mode efficiently without overhead. A terminal requests transition of a band AMC mode to a base station(301). The base station requests a channel condition report(302). The terminal transmits a code language to the base station(303). The base station assigns band to the terminal(304). The terminal transmits the signal to interference noise ratio about the five bands to the base station(306). The terminal transmits CQI difference value about five bands which are allocated from the base station(307).
Abstract translation: 提供便携式互联网系统中用于将正常子信道模式转换为频带AMC子信道模式的频带AMC子信道分配方法，以便将子信道有效地转移到频带AMC子信道模式而没有开销。 终端请求频带AMC模式转换到基站（301）。 基站请求信道条件报告（302）。 终端向基站发送代码语言（303）。 基站将频带分配给终端（304）。 终端将关于五个频带的信号与干扰噪声比发送给基站（306）。 终端发送关于从基站（307）分配的五个频带的CQI差值。
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公开(公告)号：KR1020090092038A
公开(公告)日：2009-08-31
申请号：KR1020080017308
申请日：2008-02-26
CPC classification number: H04L1/0042 , H04B10/116 , H04L1/0047 , H04L1/0057 , H04L1/1614 , H04L1/1628 , H04W84/12 , H04W92/04
Abstract: A method and an apparatus for transmitting data in a wireless local area network using visible light communication are provided to reduce retransmission overhead when data in which transceiving is failed is retransmitted at a transmitting side. A transmission side MAC(Media Access Control) layer delivers a data packet and control information of the data packet to a transmission side PHY(Physical) layer(410). The transmission side PHY layer encodes the data and transmits it with the control information to a receiving side PHY layer(420). The receiving side PHY layer transmits a feedbag message including error information to the transmission side MAC layer(430). The transmission side MAC layer inspects a feedback message. When a block having failed receiving exists, the transmission side MAC layer retransmits the failed block(440).
Abstract translation: 提供了一种使用可见光通信在无线局域网中发送数据的方法和装置，用于在发送侧重发收发失败的数据时减少重传开销。 传输侧MAC（媒体访问控制）层将数据分组和数据分组的控制信息传送到传输侧PHY（物理）层（410）。 发送侧PHY层对数据进行编码，并将其与控制信息一起发送给接收侧PHY层（420）。 接收侧PHY层向发送侧MAC层发送包含错误信息的馈送消息（430）。 发送侧MAC层检查反馈消息。 当存在接收失败的块时，发送侧MAC层重新发送故障块（440）。
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公开(公告)号：KR101286586B1
公开(公告)日：2013-07-22
申请号：KR1020110106182
申请日：2011-10-18
Applicant: 한국과학기술원
Abstract: 효율적인 자원할당을 위한 BDMA 기반 하이브리드 통신망 시스템 및 그 제공방법이 개시된다. 상기 효율적인 자원할당을 위한 BDMA 기반 하이브리드 통신망 시스템은 상기 BDMA 기반 하이브리드 통신망 시스템에 포함된 기지국 및 적어도 하나의 중계기 각각의 빔을 할당하기 위해, 상기 기지국의 빔 얼로케이터(beam allocator)에 대해서는, 상기 적어도 하나의 중계기와 상기 기지국의 간섭은 고려하지 않고 상기 기지국의 용량을 최대화하는 상기 기지국의 빔 얼로케이터를 연산하고, 상기 적어도 하나의 중계기 중 어느 하나의 중계기의 빔 얼로케이터에 대해서는, 연산된 상기 기지국 빔 얼로케이터에 기초하여 상기 중계기의 빔 얼로케이터를 연산하는 것을 특징으로 한다.
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