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Current Result Document :
ÇѱÛÁ¦¸ñ(Korean Title) |
¼¾¼ ³×Æ®¿öÅ©¿¡¼ ¿¡³ÊÁö È¿À²ÀûÀÎ ½ºÄ«À̶óÀÎ ÁúÀÇ Ã³¸® ±â¹ý |
¿µ¹®Á¦¸ñ(English Title) |
Energy Efficient Method for Skyline Queries in Sensor Networks |
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¿ø¹®¼ö·Ïó(Citation) |
VOL 23 NO. 02 PP. 0061 ~ 0073 (2007. 08) |
Çѱ۳»¿ë (Korean Abstract) |
¼¾¼ ³×Æ®¿öÅ©´Â ±º»ç ºÐ¾ß ¹× ȯ°æ °¨½Ãµî ´Ù¾çÇÑ ºÐ¾ß¿¡¼ »ç¿ëµÉ ¼ö ÀÖ´Ù. ±×·¯³ª Á¦ÇÑµÈ ¹èÅ͸®¸¦ »ç¿ëÇؾßÇÏ´Â ¼¾¼ ³ëµåÀÇ ¼ö¸íÀ» ¿¬ÀåÇϱâ À§ÇÑ ¿¡³ÊÁö Àý¾à ±â¼úÀº Áß¿äÇÑ ¹®Á¦ÀÌ´Ù. ¼¾¼ ³×Æ®¿öÅ©¿¡¼ ¿¡³ÊÁö¸¦ Àý¾àÇϱâ À§ÇÏ¿© ³×Æ®¿öÅ© ³» µ¥ÀÌÅÍ º´ÇÕ (in-network aggregation) ±â¹ýµéÀÌ Á¦¾ÈµÇ¾ú´Ù. ±âÁ¸ÀÇ ³×Æ®¿öÅ© ³» µ¥ÀÌÅÍ º´ÇÕ ±â¹ýµéÀº MIN, MAXµî ÀÏÂ÷¿ø ÃøÁ¤°ªÀÇ ÁúÀǸ¦ Áö¿øÇÏÁö¸¸, ´ÙÂ÷¿ø ÃøÁ¤°ª¿¡ ´ëÇÑ ÁúÀǸ¦ °í·ÁÇÏÁö ¾Ê¾Ò´Ù. ±âÁ¸ÀÇ Àß ¾Ë·ÁÁø ´ÙÂ÷¿ø µ¥ÀÌÅÍ ÁúÀÇ ±â¹ýÀ¸·Î ½ºÄ«À̶óÀÎ ÁúÀÇ ±â¹ýÀÌ ÀÖ´Ù. ½ºÄ«À̶óÀÎ ÁúÀÇ´Â ´Ù¸¥ °ª º¸´Ù ³ª»ÚÁö ¾ÊÀº °ªÀÇ ÁýÇÕÀ» ¹ÝȯÇÑ´Ù. ±×·¯³ª ±âÁ¸ÀÇ ½ºÄ«À̶óÀÎ ÁúÀÇ Ã³¸® ±â¹ýµéÀº Áß¾ÓÁýÁᫎ µ¥ÀÌÅͺ£À̽º¿¡¼ ÁúÀǸ¦ ó¸®Çϱ⠶§¹®¿¡ À̺¥Æ®°¡ ºó¹øÇÏ°Ô ¹ß»ýÇÏ´Â ¼¾¼ ³×Æ®¿öÅ©¿¡¼´Â ¿¡³ÊÁö È¿À²ÀûÀÌÁö ¸øÇÏ´Ù. º» ³í¹®¿¡¼´Â ¼¾¼ ³×Æ®¿öÅ©¿¡¼ ½ºÄ«À̶óÀÎ ÁúÀÇ Ã³¸®¸¦ À§ÇÑ ¿¡³ÊÁö È¿À²ÀûÀÎ »õ·Î¿î ±â¹ýÀ» Á¦¾ÈÇÑ´Ù. Á¦¾ÈÇÏ´Â ±â¹ýÀº ¼¾¼ ³ëµåÀÇ Åë½Åºñ¿ëÀ» ÁÙÀÌ°í ÁúÀÇ Ã³¸®¸¦ À§ÇÑ ÇÁ·Î¼¼½ÌÀ» ºÐ»êÇÑ´Ù. ½Ã¹Ä·¹À̼ÇÀ» ÅëÇÑ ½ÇÇèÀº Á¦¾ÈÇÏ´Â ±â¹ýÀÌ ¿¡³ÊÁö È¿À²ÀûÀÓÀ» º¸¿© ÁØ´Ù.
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¿µ¹®³»¿ë (English Abstract) |
Wireless sensor networks can be used in various fields, e.g., military and civil applications. The technique of saving energy to prolong the life of sensor nodes is one of main challenges to resourceconstrained sensor networks. Therefore, in-network aggregation of data has been proposed in resourceconstrained environments for energy efficiency. Most of previous works on in-network aggregation only support a one-dimensional data (e.g., MIN and MAX). To support a multi-dimensional data, the skyline query is used. The skyline query returns a set of points that are not dominated by any other point on all dimensions. The majority of the previous skyline query processing methods (e.g., BNL and BBS) work on centralized storage. Centralized query processing methods do not have merits in terms of energy efficiency in high event rate environments. In this paper, we propose new methods of in-network processing for the skyline queries. The proposed algorithm reduces the communication cost and evenly distributes load. The experimental results show the advantages of our algorithm over in-network aggregation in terms of improving energy efficiency.
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Å°¿öµå(Keyword) |
½ºÄ«À̶óÀÎ ÁúÀÇ
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¿¡³ÊÁö È¿À²
Skyline Query
Sensor Network
Energy Efficiency
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