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Current Result Document :

ÇѱÛÁ¦¸ñ(Korean Title) ¿µ¿ª ¸ð´ÏÅ͸µ ÁúÀÇ Ã³¸®¸¦ À§ÇÑ °ø°£ ºÐÇÒ ±â¹ý
¿µ¹®Á¦¸ñ(English Title) A Spatial Split Method for Processing of Region Monitoring Queries
ÀúÀÚ(Author) Á¤Àç¿ì   Á¤Çϸ²   ±èÀÀ¸ð   Jaewoo Chung   HaRim Jung   Ung-Mo Kim  
¿ø¹®¼ö·Ïó(Citation) VOL 19 NO. 01 PP. 0067 ~ 0076 (2018. 02)
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(Korean Abstract)
º» ³í¹®Àº ¿µ¿ª ¸ð´ÏÅ͸µ ÁúÀǸ¦ È¿À²ÀûÀ¸·Î ó¸®ÇÏ´Â ±â¹ý¿¡ ´ëÇؼ­ ´Ù·é´Ù. ±âÁ¸ÀÇ ¿µ¿ª ¸ð´ÏÅ͸µ ÁúÀÇ Ã³¸®¸¦ À§Çؼ­ »ç¿ëµÈ Áß¾Ó ÁýÁᫎ ±â¹ýÀº À̵¿ °´Ã¼°¡ ¼­¹ö¿¡ ÁÖ±âÀûÀ¸·Î ÀÚ½ÅÀÇ À§Ä¡ ¾÷µ¥ÀÌÆ®¸¦ Àü¼ÛÇÏ°í, ¼­¹ö°¡ ÁúÀÇ °á°ú¸¦ Áö¼ÓÀûÀ¸·Î ¾÷µ¥ÀÌÆ® ÇÑ´Ù°í °¡Á¤ÇÑ´Ù. ±×·¯³ª ÀÌ·¯ÇÑ °¡Á¤Àº ¸¹Àº ¾çÀÇ À§Ä¡ µ¥ÀÌÅÍ Àü¼ÛÀ¸·Î ÀÎÇØ ½Ã½ºÅÛ ¼º´ÉÀ» Å©°Ô ÀúÇϽÃŲ´Ù. ÃÖ±Ù, ¿µ¿ª ¸ð´ÏÅ͸µ ÁúÀÇ Ã³¸®¸¦ À§ÇÑ ¸î °¡Áö ºÐ»ê ±â¹ýµéÀÌ Á¦¾ÈµÇ¾ú´Ù. ºÐ»ê ±â¹ý¿¡¼­ ¼­¹ö´Â °¢ À̵¿ °´Ã¼¿¡°Ô I) ÀÛ¾÷ °ø°£ÀÇ ¼­ºê °ø°£ÀÎ »óÁÖ µµ¸ÞÀΰú ii) ¸î °³ÀÇ ÀÎÁ¢ ÁúÀÇ ¿µ¿ªÀ» ÇÒ´çÇÑ´Ù. °¢ À̵¿ °´Ã¼´Â »óÁÖ µµ¸ÞÀÎÀ» ¹þ¾î³ª°Å³ª ÁúÀÇ ¿µ¿ªÀÇ °æ°è¸¦ °¡·ÎÁö¸¦ °æ¿ì¿¡¸¸ ¼­¹ö¿¡°Ô ÀÚ½ÅÀÇ À§Ä¡¸¦ Àü¼ÛÇÑ´Ù. »óÁÖ µµ¸ÞÀÎ ¹× ÀÎÁ¢ ÁúÀÇ ¿µ¿ªÀ» À̵¿ °´Ã¼¿¡ ÇÒ´çÇϱâ À§Çؼ­ ¼­¹ö´Â ÀÛ¾÷ °ø°£À» ¹Ýº¹ÀûÀ¸·Î µ¿ÀÏÇÏ°Ô ¹ÝÀ¸·Î ºÐÇÒÇÏ¿© »ý¼ºµÇ´Â ÁúÀÇ »öÀÎ ±¸Á¶¸¦ »ç¿ëÇÑ´Ù. ÇÏÁö¸¸ ÀÌ¿Í °°Àº »öÀÎ ±¸Á¶´Â ºÒÇÊ¿äÇÑ ºÐÇÒÀÌ ¹ß»ýÇÏ°Ô µÇ¹Ç·Î ½Ã½ºÅÛÀÇ ¼º´É ÀúÇϸ¦ ¹ß»ý½ÃŲ´Ù. º» ³í¹®¿¡¼­´Â ºÒÇÊ¿äÇÑ ºÐÇÒÀ» ÁÙÀ̱â À§Çؼ­ ÀûÀÀ ºÐÇÒ ±â¹ýÀ» Á¦¾ÈÇÑ´Ù. ÀûÀÀ ºÐÇÒ ±â¹ýÀº I) ÁúÀÇ¿µ¿ª°ú °á°ú ¼­ºê °ø°£ÀÇ °ø°£Àû °ü°è¿Í ii) ÁúÀÇ ¿µ¿ªÀÇ ºÐÆ÷¸¦ °í·ÁÇÏ¿© µ¿ÀûÀ¸·Î ÀÛ¾÷ °ø°£À» ºÐÇÒÇÑ´Ù. º» ³í¹®¿¡¼­´Â ±âÁ¸ÀÇ »öÀÎ ±¸Á¶ÀÎ QR-tree¿¡ º» ³í¹®¿¡¼­ Á¦¾ÈÇÑ »õ·Î¿î ºÐÇÒ ±â¹ýÀ» Àû¿ëÇÏ¿´À¸¸ç, ½Ã¹Ä·¹À̼ÇÀ» ÅëÇØ Á¦¾È µÈ ºÐÇÒ ±â¹ýÀÇ È¿À²¼ºÀ» °ËÁõÇß´Ù.
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(English Abstract)
This paper addresses the problem of efficient processing of region monitoring queries. The centralized methods used for existing region monitoring query processing assumes that the mobile object periodically sends location-updates to the server and the server continues to update the query results. However, a large amount of location updates seriously degrade the system performance. Recently, some distributed methods have been proposed for region monitoring query processing. In the distributed methods, the server allocates to all objects i) a resident domain that is a subspace of the workspace, and ii) a number of nearby query regions. All moving objects send location updates to the server only when they leave the resident domain or cross the boundary of the query region. In order to allocate the resident domain to the moving object along with the nearby query region, we use a query index structure that is constructed by splitting the workspace recursively into equal halves. However, However, the above index structure causes unnecessary division, resulting in deterioration of system performance. In this paper, we propose an adaptive split method to reduce unnecessary splitting. The workspace splitting is dynamically allocated i) considering the spatial relationship between the query region and the resultant subspace, and ii) the distribution of the query region. We proposed an enhanced QR-tree with a new splitting method. Through a set of simulations, we verify the efficiency of the proposed split methods.
Å°¿öµå(Keyword) ¿µ¿ª ¸ð´ÏÅ͸µ ÁúÀÇ   »öÀΠ  °ø°£ ºÐÇÒ ±â¹ý   region monitoring query   indexing   spatial split method  
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