公开(公告)号：KR101402619B1

公开(公告)日：2014-06-03

申请号：KR1020130007190

申请日：2013-01-22

Applicant: 국민대학교산학협력단

Inventor： 장영민 ,  니르자사하

IPC: H04B10/116

Abstract: The present invention relates to a method for allocating a channel in an optical wireless communication system based on an LED capable of minimizing interference between an LED transmitter and an LED receiver in the optical wireless communication system based on the LED and guarantying quality of service (QoS). The present invention provides the method for allocating the channel in the optical wireless communication system based on the LED which performs wireless communications by using an LED visible ray, comprises: a first step of the LED transmitter scanning the LED receiver in a coverage thereof; a second step of the LED transmitter transmitting information on the LED receiver to a coordinator if the LED receiver exists in the coverage; a third step of the coordinator determining whether the LED receiver newly enters into the coverage based on the received information on the LED receiver; a fourth step of determining whether there exists a spare channel connectable to the LED receiver according to a predetermined resource distribution method if the LED receiver newly enters into the coverage; a fifth step of comparing a request bandwidth of the LED receiver with a currently available bandwidth if there exists the spare channel; a sixth step of comparing an SINR estimation value with a predetermined SINR threshold if the request bandwidth of the LED receiver is equal to or lower than the available bandwidth; a seventh step of generating a wavelength quality indication (WQI) value if the SINR estimation value is equal to or lower than the SINR threshold value; and allocating a channel for the LED receiver based on the wavelength quality indication (WQI) value.

Abstract translation: 本发明涉及一种基于能够最小化基于LED的光无线通信系统中的LED发射器与LED接收器之间的干扰的LED，并且保证服务质量（QoS）的光无线通信系统中的信道分配方法 ）。 本发明提供了一种基于通过使用LED可见光执行无线通信的LED在光无线通信系统中分配信道的方法，包括：LED发射机在其覆盖范围内扫描LED接收机的第一步骤; 如果LED接收器存在于覆盖范围内，则LED发射器的第二步骤将LED接收器上的信息发送到协调器; 所述协调器基于所述LED接收器上接收到的信息来确定所述LED接收器是否新进入所述覆盖范围中的第三步骤; 如果LED接收器新进入覆盖区，则根据预定的资源分配方法确定是否存在可连接到LED接收器的备用通道的第四步骤; 第五步，如果存在备用信道，则将LED接收器的请求带宽与当前可用带宽进行比较; 如果LED接收机的请求带宽等于或低于可用带宽，则将SINR估计值与预定SINR阈值进行比较的第六步骤; 如果SINR估计值等于或低于SINR阈值，则产生波长质量指示（WQI）值的第七步骤; 以及基于所述波长质量指示（WQI）值为所述LED接收器分配信道。

公开(公告)号：KR1020130093781A

公开(公告)日：2013-08-23

申请号：KR1020110147059

申请日：2011-12-30

Applicant: 국민대학교산학협력단

Inventor： 장영민 ,  최선웅 ,  레투안남

IPC: H04L29/06 ,  H04L1/00 ,  H04L12/70 ,  H04B10/11

CPC classification number: H04W40/22 ,  H04B10/116 ,  H04L1/16 ,  H04L43/0829 ,  H04W80/02 ,  H04W88/04

Abstract: PURPOSE: A cooperative MAC protocol communication method for a visible light communication is provided to improve a communication speed and communication quality between a transmit node and a receive node in a visible light communication. CONSTITUTION: A transmission node (100) transmits an optical signal through visible light which is illumination light. A relay node (200) includes a receive unit receiving the optical signal and an emit unit emitting the optical signal. A receiver node (300) receives the optical from the relay node. The transmission node or the receiver node selects the relay node with which the transmission node or the receive node communicates, among a plurality of relay nodes. The transmission node and the receiver node select the relay node to be used for data transmission.

Abstract translation: 目的：提供用于可见光通信的协作MAC协议通信方法，以在可见光通信中提高发射节点和接收节点之间的通信速度和通信质量。 构成：发送节点（100）通过作为照明光的可见光发送光信号。 中继节点（200）包括接收光信号的接收单元和发射光信号的发射单元。 接收机节点（300）从中继节点接收光。 发送节点或接收方节点在多个中继节点中选择发送节点或接收节点与之通信的中继节点。 传输节点和接收方节点选择要用于数据传输的中继节点。