公开(公告)号：KR101247588B1

公开(公告)日：2013-03-26

申请号：KR1020120006876

申请日：2012-01-20

Applicant: 국민대학교산학협력단

Inventor： 장영민 ,  뚜앙응웬 ,  무스타파

IPC: H04B10/10 ,  G06K17/00 ,  G01S1/02

Abstract: PURPOSE: A link switching method in an LED(Light Emitting Diode)-ID(Identification) system based on a prediction position of an LED-ID reader is provided to execute a link switching procedure based on list information by calculating the list information of an LED-ID tag. CONSTITUTION: An LED-ID reader and a connected LED-ID tag generate list information of an LED-ID tag based on a prediction position. The LED-ID tag transmits a link switching response message including the list information to the LED-ID reader. The LED-ID reader receives the link switching response message. The LED-ID reader interrupts connection with the LED-ID tag. The LED-ID reader scans another LED-ID tag based on the list information. [Reference numerals] (AA) LED-ID reader; (B1) (a) step; (B2) Measuring the position of a user by the predetermined time interval and storing into user position information DB(DataBase); (C1) (b) step; (C2) Measuring the intensity of signals transmitted from LED-ID tags accessed to a user; (D1) (c) step; (D2) Comparing whether the result of the measurement is more than or equal to a reference value; (D3) Transmitting a link switching request message; (EE) No; (FF) Yes; (GG) LED-ID tags(LED-ID tags currently accessed to an LED-ID reader); (H1) (d) step; (H2) Receiving the link switching request message and calculating the estimated position of the LED-ID reader after the predetermined time; (I1) (e) step; (I2) Generating the list information of LED-ID tags which are accessible to the LED-ID reader; (J1) (f) step; (J2) Transmitting a link switching response message to the LED-ID reader; (K1) (g) step; (K2) Receiving the link switching response message and scanning LED-ID tags to be newly accessed based on the link switching response message

Abstract translation: 目的：提供一种基于LED-ID读取器的预测位置的LED（发光二极管）-ID（识别）系统中的链路切换方法，通过计算列表信息来执行基于列表信息的链路切换过程 LED-ID标签。 构成：LED-ID读取器和连接的LED-ID标签基于预测位置生成LED-ID标签的列表信息。 LED-ID标签向LED-ID读取器发送包括列表信息的链接切换响应消息。 LED-ID读取器接收链路切换响应消息。 LED-ID读卡器中断与LED-ID标签的连接。 LED-ID读取器根据列表信息扫描另一个LED-ID标签。 （附图标记）（AA）LED-ID读取器; （B1）（a）步骤; （B2）以预定的时间间隔测量用户的位置并存储到用户位置信息DB（DataBase）中; （C1）（b）步骤; （C2）测量从用户访问的LED-ID标签发送的信号的强度; （D1）（c）步骤; （D2）比较测量结果是否大于或等于参考值; （D3）发送链路切换请求消息; （EE）否 （FF）是; （GG）LED-ID标签（当前访问LED-ID读取器的LED-ID标签）; （H1）（d）步骤; （H2）在预定时间之后接收链路切换请求消息并计算LED-ID读取器的估计位置; （I1）（e）步骤; （I2）生成LED-ID读取器可访问的LED-ID标签的列表信息; （J1）（f）步骤; （J2）向LED-ID读取器发送链路切换响应消息; （K1）（g）步骤; （K2）基于链路切换响应消息接收链路切换响应消息和扫描要新接入的LED-ID标签