ÇѱÛÁ¦¸ñ(Korean Title) |
RFID ÅÂ±× °´Ã¼ÀÇ À§Ä¡ ÃßÀûÀ» À§ÇÑ »öÀÎ ±¸Á¶ÀÇ ¼³°è ¹× ±¸Çö |
¿µ¹®Á¦¸ñ(English Title) |
Design and Implementation of Index Structure for Tracing of RFID Tag Objects |
ÀúÀÚ(Author) |
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¿ø¹®¼ö·Ïó(Citation) |
VOL 07 NO. 02 PP. 0067 ~ 0079 (2005. 09) |
Çѱ۳»¿ë (Korean Abstract) |
RFID ½Ã½ºÅÛ¿¡¼ ű×ÀÇ À§Ä¡¸¦ ÃßÀûÇϱâ À§Çؼ ±ËÀûÀº ¸ðµ¨¸µµÇ°í »öÀεǾî¾ß ÇÑ´Ù. ±ËÀûÀº űװ¡ Æǵ¶±âÀÇ ÀνĿµ¿ªÀ¸·Î µé¾î°¥ ¶§¿Í ³ª°¥ ¶§ º¸°íµÇ´Â µÎ °³ÀÇ ½Ã°ø°£ À§Ä¡¸¦ ¿¬°áÇÑ ¼±ºÐÀ¸·Î Ç¥ÇöµÉ ¼ö ÀÖ´Ù. ¸¸¾à űװ¡ Æǵ¶±âÀÇ ÀνĿµ¿ª¿¡ µé¾î¿Í ³ª°¡Áö ¾ÊÀ¸¸é ½Ã°ø°£ À§Ä¡´Â ¿ÀÁ÷ űװ¡ ÀνĿµ¿ª¿¡ µé¾î¿Ã ¶§¸¸ º¸°íµÈ´Ù. µû¶ó¼ Æǵ¶±â¿¡ ¸Ó¹°°í Àִ ű״ ±ËÀûÀ» Ç¥ÇöÇÒ ¼ö°¡ ¾øÀ¸¹Ç·Î ÁúÀÇ ½Ã ÀÌ·¯ÇÑ Å±׸¦ °Ë»öÇÒ ¼ö ¾ø´Ù. ÀÌ·¯ÇÑ ¹®Á¦¸¦ ÇØ°áÇϱâ À§ÇÏ¿© ÀÌ ³í¹®¿¡¼´Â ű×ÀÇ ±ËÀûÀ» °£°ÝÀ¸·Î Á¤ÀÇÇÏ°í »õ¿î »öÀÎÀÎ Interval R-tree¸¦ Á¦¾ÈÇÑ´Ù. ¶ÇÇÑ È¿À²ÀûÀÎ ÁúÀÇ󸮸¦ À§ÇÑ »õ·Î¿î »ðÀÔ ¹× ºÐÇÒ ¾Ë°í¸®ÁòÀ» Á¦¾ÈÇÑ´Ù. ¸¶Áö¸·À¸·Î Á¦¾ÈµÈ »öÀÎÀ» ±¸ÇöÇÏ¿© ´Ù¾çÇÑ µ¥ÀÌÅÍ ÁýÇÕ¿¡¼ R-tree ¿Í R*-tree¿Í ¼º´ÉÀ» ºñ±³ÇÏ¿© ¿ì¼ö¼ºÀ» ÀÔÁõÇÑ´Ù. |
¿µ¹®³»¿ë (English Abstract) |
For tracing tag locations, the trajectories should be modeled and indexed in a radio frequency identification (RFID) system. The trajectory of a tag is represented as a line that connects two spatiotemporal locations captured when the tag enters and leaves the vicinity of a reader. If a tag enters but does not leave a reader, its trajectory is represented only as a point captured at entry. Because the information that a tag stays in areader is missing from the trajectory represented only as a point, it is impossible to find the tag that remains in a reader. To solve this problem we propose the data model in which trajectories are defined as intervals and new index scheme called the Interval R-tree. We also propose new insert and split algorithms to enable efficient query processing. We evaluate the performance of the proposed index scheme and compare it with the R-tree and the R*-tree. Our experiments show that the new index scheme outperforms the other two in processing queries of tags on various datasets. |
Å°¿öµå(Keyword) |
RFID ÅÂ±× °´Ã¼
RFID tag object
RFID À§Ä¡ ÃßÀû
tracing tag object
RFID ½Ã½ºÅÛ
RFID systems
À̵¿Ã¼
moving object
À̵¿Ã¼ µ¥ÀÌÅͺ£À̽º
moving object database
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