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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸Ã³¸®ÇÐȸ ³í¹®Áö > Á¤º¸Ã³¸®ÇÐȸ ³í¹®Áö D

Á¤º¸Ã³¸®ÇÐȸ ³í¹®Áö D

Current Result Document : 208 / 246 ÀÌÀü°Ç ÀÌÀü°Ç   ´ÙÀ½°Ç ´ÙÀ½°Ç

ÇѱÛÁ¦¸ñ(Korean Title) À¯ºñÄõÅͽº ÄÄÇ»Æÿ¡¼­ RFID ÅÂ±× ÃßÀûÀ» À§ÇÑ ÅÂ±× ±ËÀû »ý¼º ±â¹ý
¿µ¹®Á¦¸ñ(English Title) Tag Trajectory Generation Scheme for RFID Tag Tracing in Ubiquitous Computing
ÀúÀÚ(Author) ±èÁ¾¿Ï   ¿À´ö½Å   ±è±âõ   Jongwan Kim   Dukshin Oh   Keecheon Kim  
¿ø¹®¼ö·Ïó(Citation) VOL 16-D NO. 01 PP. 0001 ~ 0010 (2009. 02)
Çѱ۳»¿ë
(Korean Abstract)
RFID ½Ã½ºÅÛÀÇ ÁÖ¿ä¸ñÀû Áß Çϳª´Â »ç¹°¿¡ ű×(tag)¸¦ ºÎÂøÇÏ¿© »ç¹°ÀÇ À̵¿À» ÃßÀûÇÏ´Â °ÍÀÌ´Ù. ű״ °ø°£Àû À§Ä¡¿Í ½Ã°£Á¤º¸¸¦ ¸ðµÎ °®±â ¶§¹®¿¡ ±âÁ¸ÀÇ ½Ã°ø°£ °´Ã¼¿Í °°ÀÌ ±ËÀûÀ» »öÀÎÈ­ ÇÒ ¼ö ÀÖ´Ù. ÅÂ±× ±ËÀûÀ» ±¸¼ºÇÏ¸é º¸´Ù È¿À²ÀûÀÎ ÃßÀûÀÌ °¡´ÉÇÏÁö¸¸ ÇöÀç±îÁö űױËÀû»öÀο¡ ´ëÇÑ ¿¬±¸´Â ¸¹Áö ¾Ê´Ù. űװ¡ ±âÁ¸ ½Ã°ø°£ °´Ã¼¿Í ´Ù¸¥ Á¡Àº ¸®´õ(reader)¿¡ ÁøÀÔ(enter)ÇÑ ÈÄ ÀÌÅ»(leave) ÇÔÀ¸·Î½á ¸®´õ º°·Î µ¶¸³ÀûÀÎ ±ËÀûÀÌ »ý¼ºµÇ´Â °ÍÀÌ´Ù. µû¶ó¼­, ¸®´õ »çÀÌ¿¡´Â ű׸¦ ãÀ» ¼ö ¾ø´Â ±ËÀû ´ÜÀý±¸°£ÀÌ ³ªÅ¸³ª¸ç, ű×ÀÇ ÃßÀûÀ» ¾î·Æ°Ô ÇÑ´Ù. ¶ÇÇÑ ¸®´õ¿¡ ÁøÀÔ ÇÑ ÈÄ ÀÌÅ»ÇÏÁö ¾ÊÀº Æ÷ÀÎÆ® ű×(point tag)´Â ±ËÀûÀ» Çü¼ºÇÏÁö ¸øÇϱ⠶§¹®¿¡ ÁúÀÇ¿¡¼­ Ž»öµÇÁö ¾Ê´Â´Ù. ¿ì¸®´Â ÀÌ·¯ÇÑ ¹®Á¦¸¦ ÇØ°á Çϱâ À§ÇØ °¢ ¸®´õ¿¡ ºÐ»êµÈ ±ËÀûÀ» ÇϳªÀÇ ±ËÀûÀ¸·Î ±¸¼ºÇÏ°í Æ÷ÀÎÆ® ű׸¦ Ž»öÇϴ űױËÀû»öÀÎÀÎ TR-tree(Tag trajectory R-tree in RFID system)¸¦ Á¦¾ÈÇÑ´Ù. ½ÇÇè°á°ú´Â ¸®´õº° ±ËÀû ´ÜÀý±¸°£À» ±Øº¹ÇÑ TR-tree°¡ ±âÁ¸ÀÇ TPIR-tree ±×¸®°í R-tree º¸´Ù Çâ»óµÈ ¼º´ÉÀ» ³ªÅ¸³½´Ù.
¿µ¹®³»¿ë
(English Abstract)
One of major purposes of a RFID system is to track moving objects using tags attached to the objects. Because a tagged object has both location and time information expressed as the location of the reader, we can index the trajectory of the object like existing spatiotemporal objects. More efficient tracking may be possible if a spatiotemporal trajectory can be formed of a tag, but there has not been much research on tag trajectory indexes. A characteristic that distinguishes tags from existing spatiotemporal objects is that a tag creates a separate trajectory in each reader by entering and then leaving the reader. As a result, there is a trajectory interruption interval between readers, in which the tag cannot be located, and this makes it difficult to track the tag. In addition, the point tags that only enter and don¡¯t leave readers do not create trajectories, so cannot be tracked. To solve this problem, we propose a tag trajectory index called TR-tree (tag trajectory R-tree in RFID system) that can track a tag by combining separate trajectories among readers into one trajectory. The results show that TR-tree, which overcomes the trajectory interruption superior performance than TPIR-tree and R-tree.
Å°¿öµå(Keyword) ¹«¼±ÀüÆĽĺ°   űנ  R-tree   ½Ã°ø°£ »öÀΠ  ±ËÀû »öÀΠ  RFID   Tag   R-tree   Spatiotemporal Index   Trajectory Index  
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