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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸°úÇÐȸ ³í¹®Áö > Á¤º¸°úÇÐȸ ³í¹®Áö D : µ¥ÀÌŸº£À̽º

Á¤º¸°úÇÐȸ ³í¹®Áö D : µ¥ÀÌŸº£À̽º

Current Result Document : 2 / 7 ÀÌÀü°Ç ÀÌÀü°Ç   ´ÙÀ½°Ç ´ÙÀ½°Ç

ÇѱÛÁ¦¸ñ(Korean Title) ¹«¼± ¼¾¼­ ³×Æ®¿öÅ©¿¡¼­ ´ÙÁß ÁúÀÇÃÖÀûÈ­ ±â¹ýÀ» ÀÌ¿ëÇÑ¿¡³ÊÁö È¿À²ÀûÀÎ ÁúÀÇ Ã³¸® ±â¹ý
¿µ¹®Á¦¸ñ(English Title) Energy Efficient Query Processing based on Multiple Query Optimization in Wireless Sensor Networks
ÀúÀÚ(Author) ÀÌÀ¯¿ø   Á¤ÀºÈ£   ÇÔ´ö¹Î   ÀÌÃæÈ£   ÀÌ¿ëÁØ   À̱â¿ë   ±è¸íÈ£   Yu Won Lee   Eun Ho Chung   Deok Min Haam   Chung Ho Lee   Yong Jun Lee   Ki Yong Lee   Myoung Ho Kim  
¿ø¹®¼ö·Ïó(Citation) VOL 36 NO. 01 PP. 0008 ~ 0021 (2009. 02)
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(Korean Abstract)
¹«¼± ¼¾¼­ ³×Æ®¿öÅ©´Â ÀÛÀº Å©±âÀÇ ¼¾¼­ ³ëµåµé°ú º£À̽º ½ºÅ×À̼ÇÀ¸·Î ±¸¼ºµÈ´Ù. ¼¾¼­ ³ëµåµéÀº ¿¡³ÊÁö¸¦ Áö¼ÓÀûÀ¸·Î °ø±Þ¹Þ±â ¾î·Á¿î Ư¼ºÀ» °¡Áö°í Àֱ⠶§¹®¿¡ Á¦ÇÑµÈ ¿¡³ÊÁö¸¦ ÃÖ´ëÇÑ È¿À²ÀûÀ¸·Î »ç¿ëÇØ¾ß ÇÑ´Ù. ¼¾¼­ ³×Æ®¿öÅ©¿¡¼­ Á¤º¸¸¦ ¾òÀ» ¶§´Â ÁúÀǸ¦ ÀÛ¼ºÇϴµ¥, ¿©·¯ °³ÀÇ ÁúÀÇ°¡ ¼¾¼­ ³×Æ®¿öÅ©¿¡ ¿äûµÇ¾úÀ» ¶§ À̵éÀÇ ½ÇÇàÀ» ÃÖÀûÈ­½ÃÅ°¸é ¼¾¼­ ³ëµåÀÇ ¿¡³ÊÁö ¼Òºñ·®À» ÁÙÀÏ ¼ö ÀÖ´Ù. º» ³í¹®¿¡¼­´Â ¼¾¼­ ³×Æ®¿öÅ©¿¡ ¿©·¯ °³ÀÇ ÁúÀÇ°¡ ¿äûµÉ ¶§, ÁúÀÇ °£ÀÇ Æ÷ÇÔ°ü°è¸¦ È°¿ëÇÏ¿© ÁúÀÇ ½ÇÇàÀ» ÃÖÀûÈ­½ÃÅ°´Â ±â¹ýÀ» Á¦¾ÈÇÑ´Ù. Á¦¾ÈÇÏ´Â ±â¹ýÀº ÁúÀÇ°¡ »õ·Î ¿äûµÉ ¶§, ¼¾¼­ ³×Æ®¿öÅ©¿¡¼­ ½ÇÇà ÁßÀÎ ÁúÀǵé Áß »õ·Î ¿äûµÈ ÁúÀÇÀÇ °á°ú¸¦ Á¶ÇÕÇس¾ ¼ö ÀÖ´Â ÁúÀǵéÀÇ ÁýÇÕÀ» ã¾Æ³½´Ù. ÀÌ ÁýÇÕÀº ÁúÀǵéÀÇ »ùÇà ÁÖ±â, ÇÁ·ÎÁ§¼ÇµÇ´Â ¾îÆ®¸®ºäÆ®µé, ±×¸®°í Á¶°ÇÀýÀ» ±âÁØÀ¸·Î ±¸¼ºµÈ´Ù. ÀÌ ÁýÇÕ¿¡ ¼ÓÇÑ ÁúÀǵéÀÇ °á°ú·ÎºÎÅÍ »õ ÁúÀǸ¦ ¼¾¼­ ³×Æ®¿öÅ©¿¡¼­ ½ÇÇà½ÃÄ×À» ¶§¿Í µ¿ÀÏÇÑ °á°ú¸¦ À¯µµÇس¾ ¼ö ÀÖÀ¸¸é, »õ ÁúÀǸ¦ ¼¾¼­ ³×Æ®¿öÅ©¿¡ Àü´ÞÇÏÁö ¾Ê°í, ÀÌ ÁýÇÕ¿¡ ¼ÓÇÑ ÁúÀǵéÀÇ °á°ú¸¦ ÀçÈ°¿ëÇÏ¿© º£À̽º ½ºÅ×À̼ǿ¡¼­ °á°ú¸¦ Á¶ÇÕÇس½´Ù.
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(English Abstract)
A wireless sensor network is a computer network which consists of spatially distributed devices, called sensor nodes. In wireless sensor networks, energy efficiency is a key issue since sensor nodes must resides upon limited energy. To retrieve sensor information without dealing with the network issues, a sensor network is treated as onceptual database on which query can be requested. When multiple queries are requested for processing in a wireless sensor network, energy consumption can be significantly reduced if common partial results among similar queries can be effectively shared.In this paper, we propose an energy efficient multi-query processing technique based on the coverage relationship between multiple queries. When a new query is requested, our proposed technique derives an equivalent query from queries running at the moment, if it is derivable. Our technique first computes the set of running queries that may derive a partial result of the new query and then test if this set covers all the result of the new query attribute-wise and tuple-wise. If the result of the new query can be derived from the results of executing queries, the new query derives its result at the base station instead of being executed in the sensor network.
Å°¿öµå(Keyword) ´ÙÁß ÁúÀÇ ÃÖÀûÈ­   multiple query optimization   ¹«¼± ¼¾¼­ ³×Æ®¿öÅ©   wireless sensor networks   SQL   SQL  
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