公开(公告)号：KR101360929B1

公开(公告)日：2014-02-12

申请号：KR1020130007188

申请日：2013-01-22

Applicant: 국민대학교산학협력단

Inventor： 장영민 ,  레투안남

IPC: H04L12/761 ,  H04B10/116

Abstract: The present invention relates to a packet broadcasting method which uses visible light communication (VLC) for broadcasting by allocating a channel according to QoS based on a data stream using a visible light MAC protocol when a channel newly subscribes to a broadcasting AP in a broadcasting system using VLC. The present invention includes: a step of broadcasting to a plurality of terminals through VLC by including channel information to a beacon frame in a broadcasting AP which performs VLC; a step of receiving the broadcasted beacon frame and transmitting a join message for newly joining into the AP; a step of checking traffic rate (r), beacon interval (BI), superframe duration (SD), the number (N) of slots of superframes and calculating the number of required time slots, Nrequirement; a step of determining if the number of required time slots, Nrequirement, satisfies a predetermined QoS or not; a step of allocating a channel to the terminal when the number of required time slots satisfies the QoS and broadcasting a packet having a superframe to the terminal through the allocated channel using the VLC; and a step of extracting a wanted data stream from the received superframe from the terminal. [Reference numerals] (AA) Start; (BB) End; (S300) Setting up traffic rate (r), beacon interval (BI), the number (N) of slots of superframes and superframe duration (SD); (S301) Calculating the number of required time slots, n_requirement; (S302) QoS satisfied?; (S303) Allocating channel; (S304) Refusing channel allocating

Abstract translation: 本发明涉及一种使用可见光通信（VLC）进行广播的分组广播方法，当广播系统在广播系统中新近订阅广播AP时，通过使用可见光MAC协议基于数据流来分配信道 使用VLC。 本发明包括：通过在执行VLC的广播AP中的信标帧中包括信道信息，通过VLC向多个终端广播的步骤; 接收广播信标帧并发送用于新加入AP的加入消息的步骤; 检查业务速率（r），信标间隔（BI），超帧持续时间（SD），超帧时隙数量（N）和计算所需时隙数量N步骤; 确定所需时隙的数量，N要求是否满足预定的QoS; 当所需时隙的数量满足QoS并且通过使用VLC通过分配的信道向终端广播具有超帧的分组时，向终端分配信道的步骤; 以及从所述终端从所接收的超帧中提取所需数据流的步骤。 （附图标记）（AA）开始; （BB）结束; （S300）设置通信速率（r），信标间隔（BI），超帧时隙数（N）和超帧持续时间（SD）; （S301）计算所需时隙数，n_requirement; （S302）QoS满足？ （S303）分配通道; （S304）拒绝信道分配

公开(公告)号：KR1020130093831A

公开(公告)日：2013-08-23

申请号：KR1020120006872

申请日：2012-01-20

Applicant: 국민대학교산학협력단

Inventor： 장영민 ,  최선웅 ,  레투안남

IPC: H04B10/11 ,  H04B10/03

Abstract: PURPOSE: A link recovery method which uses a mutual cooperation visible light communication way is provided to resume a transmission and a reception by using a multi-node in order to receive data from a node of a smooth communication among multiple mutual cooperation nodes. CONSTITUTION: A cooperative node (200) receives a fast link recovery (FLR) signal. The mutual cooperation node transmits the received FLR signal to a destination node (300). The destination node receives the FLR signal. The destination node transmits an FLR response (RSP) to the mutual cooperation node. The mutual cooperation node transmits the FLR RSP to a coordinator (100). The coordinator resumes a data transmission to the destination node through the mutual cooperation node.

Abstract translation: 目的：提供一种使用相互协作可见光通信方式的链路恢复方法，以便通过使用多节点恢复发送和接收，以便从多个相互协作节点之间的平滑通信的节点接收数据。 协议：协作节点（200）接收快速链路恢复（FLR）信号。 相互协作节点将接收到的FLR信号发送到目的地节点（300）。 目的节点接收FLR信号。 目的地节点向相互协作节点发送FLR响应（RSP）。 相互协作节点将FLR RSP发送到协调器（100）。 协调器通过相互协作节点恢复到目的地节点的数据传输。