公开(公告)号：KR101372373B1

公开(公告)日：2014-03-12

申请号：KR1020130007192

申请日：2013-01-22

Applicant: 국민대학교산학협력단

Inventor： 장영민 ,  뚜안응웬

IPC: H04B10/116

Abstract: The present invention relates to a high-speed link switching method of an LED communication system capable of performing link switching at high speed by allowing an LED-ID system to determine whether to perform link switching in advance according to a moving trajectory of an LED-ID reader. The high-speed link switching method of an LED communication system including a plurality of LED-ID tags and LED-ID readers, which transmit and receive data using visible rays, according to the present invention comprises: a first step for allowing a location server to generate a link switching table to store link switching probability between LED-ID tags according to a moving trajectory of an LED-ID reader, based on location information transmitted from the LED-ID reader at constant intervals; a second step for allowing the location server to determine whether the moving trajectory of the LED-ID reader exists on the link switching table, based on the location information received from the LED-ID reader, if a link switching request is received from the LED-ID reader; a third step for allowing the location server to extract a target LED-ID tag, to which a new link is to be connected, using the link switching probability between the LED-ID tags according to the moving trajectory of the LED-ID reader stored in the link switching table and transmit the extracted target LED-ID tag to the LED-ID reader, if the moving trajectory of the LED-ID reader exists on the link switching table; and a fourth step for allowing the LED-ID reader to block a link connection with a currently linked LED-ID tag and set a new link connection with the extracted target LED-ID tag. [Reference numerals] (130) Communications network

Abstract translation: 本发明涉及一种LED通信系统的高速链路切换方法，其能够通过使LED-ID系统根据LED发光二极管的移动轨迹来预先确定是否进行链路切换来高速执行链路切换， 身份证读者。 根据本发明的包括使用可见光发送和接收数据的多个LED-ID标签和LED-ID读取器的LED通信系统的高速链路切换方法包括：第一步骤，用于允许位置服务器 基于从LED-ID读取器以恒定间隔发送的位置信息，生成链接切换表，以根据LED-ID读取器的移动轨迹来存储LED-ID标签之间的链接切换概率; 如果从LED接收到链路切换请求，则基于从LED-ID读取器接收的位置信息，允许位置服务器确定LED-ID读取器的移动轨迹是否存在于链路切换表上的第二步骤 -ID阅读器 第三步骤，根据所存储的LED-ID读取器的移动轨迹，使用位置服务器提取要连接新链接的目标LED-ID标签，使用LED-ID标签之间的链路切换概率 在链路切换表中，如果LED-ID读取器的移动轨迹存在于链路切换表上，则将所提取的目标LED-ID标签发送到LED-ID读取器; 以及第四步骤，用于允许LED-ID读取器阻止与当前链接的LED-ID标签的链接连接，并且与所提取的目标LED-ID标签设置新的链接连接。 （附图标记）（130）通信网络