Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)
Current Result Document :
ÇѱÛÁ¦¸ñ(Korean Title) |
ÅÂ±× ¼ö ÃßÁ¤ ±â¹ýÀ» Àû¿ëÇÑ EPCglobal Class-1 Gen-2 Ãæµ¹¹æÁö ¾Ë°í¸®Áò |
¿µ¹®Á¦¸ñ(English Title) |
EPCglobal Class-1 Gen-2 Anti-collision Algorithm with Tag Number Estimation Scheme |
ÀúÀÚ(Author) |
ÀÓÀÎÅÃ
Intaek Lim
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¿ø¹®¼ö·Ïó(Citation) |
VOL 14 NO. 05 PP. 1133 ~ 1138 (2010. 05) |
Çѱ۳»¿ë (Korean Abstract) |
EPCglobal Class-1 Gen-2 Ãæµ¹¹æÁö ±â¹ý¿¡¼´Â Q-¾Ë°í¸®ÁòÀ» ÅëÇÏ¿© ÁúÀÇ ¶ó¿îµåÀÇ ÇÁ·¹ÀÓ Å©±â¸¦ °áÁ¤ÇÑ´Ù. Q-¾Ë°í¸®ÁòÀº ¸®´õÀÇ ½Äº°¿µ¿ª ³»¿¡ Àִ ű×ÀÇ ¼ö¸¦ ÃßÁ¤ÇÏÁö ¾Ê°í ½½·ÔÀÇ »óŸ¸À» ÀÌ¿ëÇÏ¿© ÁúÀÇ ¶ó¿îµåÀÇ ÇÁ·¹ÀÓ Å©±â¸¦ °è»êÇϹǷΠ¾Ë°í¸®Áò¿¡ ºñÇÏ¿© ¸®´õÀÇ ¾Ë°í¸®ÁòÀÌ ´Ü¼øÇÑ ÀåÁ¡ÀÌ ÀÖ´Ù. ¹Ý¸é, ½ÇÁ¦ ű×ÀÇ ¼ö¸¦ ¹Ý¿µÇÑ ÃÖÀûÈµÈ ÇÁ·¹ÀÓ Å©±â¸¦ ÇÒ´çÇÒ ¼ö ¾ø´Â ´ÜÁ¡ÀÌ ÀÖ´Ù. ¶ÇÇÑ, ±âÁ¸ÀÇ Q-¾Ë°í¸®Áò¿¡¼´Â ÇÁ·¹ÀÓ Å©±â¸¦ Á¶ÀýÇϱâ À§ÇÑ ¸Å°³º¯¼öÀÎ C°ªÀÌ Á¤ÇØÁ® ÀÖÁö ¾Ê´Ù. µû¶ó¼ º» ³í¹®¿¡¼´Â ¸Å ÁúÀÇ ¶ó¿îµå¸¶´Ù ű×ÀÇ ¼ö¸¦ ÃßÁ¤ÇÏ¿© Q-¾Ë°í¸®ÁòÀÇ ¸Å°³º¯¼ö C°ªÀ» °áÁ¤ÇÏ´Â ±â¹ýÀ» Á¦¾ÈÇÏ°í, ÀÌ¿¡ ´ëÇÑ ¼º´ÉºÐ¼®À» ÇÑ´Ù.
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¿µ¹®³»¿ë (English Abstract) |
In the anti-collision scheme proposed by EPCglobal Class-1 Gen-2 standard, the frame size for a query round is determined by Q-algorithm. In the Q-algorithm, the reader calculates a frame size without estimating the number of tags in it's identification range. It uses only the slot status. Therefore, Q-algorithm has advantage that the reader's algorithm is simpler than other algorithms. However, it cannot allocate an optimized frame size because it does not consider the number of tags. Also, the conventional Q-algorithm does not define an optimized parameter value C for adjusting the frame size. In this paper, we propose a modified Q-algorithm and evaluate the performance with computer simulations. The proposed Q-algorithm estimates the number of tags at every query round, and determines the parameter value C based on the estimated number of tags.
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Å°¿öµå(Keyword) |
RFID
ÅÂ±× ¼ö ÃßÁ¤
Ãæµ¹¹æÁö ¾Ë°í¸®Áò
EPCglobal Class-1 Gen-2
Q-¾Ë°í¸®Áò
RFID
Tag number estimation
Anti-collision algorithm
EPCglobal Class-1 Gen-2
Q-Algorithm
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