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ÇѱÛÁ¦¸ñ(Korean Title) |
¼¾¼ ³×Æ®¿öÅ©¿¡¼ ÀúÀå °ø°£ÀÇ È°¿ë¼º°ú ¿¡³ÊÁö È¿À²¼ºÀ» À§ÇÑ ½Ã°£ ¸Å°³º¯¼ö ±â¹ÝÀÇ µ¥ÀÌŸ Á᫐ ÀúÀå ±â¹ý |
¿µ¹®Á¦¸ñ(English Title) |
A Time-Parameterized Data-Centric Storage Method for Storage Utilization and Energy Efficiency in Sensor Networks |
ÀúÀÚ(Author) |
¹Ú¿ëÈÆ
À±Á¾Çö
¼µ¿¹Î
±è ÁØ
À¯Àç¼ö
Yong Hun Park
Jong Hyun Yoon
Dong Min Seo
June Kim
Jae Soo Yoo
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¿ø¹®¼ö·Ïó(Citation) |
VOL 36 NO. 02 PP. 0099 ~ 0111 (2009. 04) |
Çѱ۳»¿ë (Korean Abstract) |
ÃÖ±Ù ¹«¼± ¼¾¼ ³×Æ®¿öÅ© ȯ°æ¿¡¼ °¨ÁöµÇ´Â µ¥ÀÌŸ¸¦ ³×Æ®¿öÅ©»ó¿¡ È¿°úÀûÀ¸·Î ÀúÀåÇÏ°í ó¸®Çϱâ À§ÇÑ ´Ù¾çÇÑ ±â¹ýµéÀÌ Á¦¾ÈµÇ¾ú´Ù. µ¥ÀÌŸ Á᫐ ÀúÀå(Data-Centric Storage : DCS) ±â¹ýÀº ºÐÇÒµÈ µ¥ÀÌŸ ¿µ¿ªÀ» ¼¾¼µé¿¡°Ô ÇÒ´çÇÏ°í, ¼öÁýµÈ µ¥ÀÌŸ¸¦ ÇØ´ç µ¥ÀÌŸ ¿µ¿ªÀ» ´ã´çÇÏ´Â ¼¾¼¿¡ ÀúÀåÇÏ´Â ±â¹ýÀÌ´Ù. ±âÁ¸ ¿¬±¸µÈ DCS ±â¹Ý ±â¹ýµéÀº µ¥ÀÌŸ Àü¼ÛÀ» À§ÇÑ Åë½Åºñ¿ëÀÇ °¨¼Ò¿Í Á¤ÇÕ ÁúÀÇ(Exact Query) ¹× ¿µ¿ª ÁúÀÇ(Range Query)ÀÇ È¿°úÀûÀΠ󸮸¦ À§ÇØ Á¦¾ÈµÇ¾ú´Ù. ÇÏÁö¸¸ ¹æ´ëÇÑ µ¥ÀÌŸ°¡ ¹ß»ýÇÏ´Â µ¥ÀÌŸ ¿µ¿ªÀ» ´ã´çÇÏ´Â ¼¾¼ÀÇ ÀúÀå ºÎÇÏ ¹®Á¦´Â °í·ÁµÇÁö ¾Ê¾Ò´Ù. ÃÖ±Ù ÀÌ¿Í °°Àº ÀúÀå ºÎÇÏ ¹®Á¦¸¦ ÇØ°áÇϱâ À§ÇØ K-D Æ®¸®¸¦ ±â¹ÝÀ¸·Î µ¿Àû ºÐÇÒ µ¥ÀÌŸ ¿µ¿ªÀ» »ç¿ëÇÏ´Â KDDCS°¡ Á¦¾ÈµÇ¾ú´Ù. ÇÏÁö¸¸ KDDCS¸¦ Æ÷ÇÔÇÑ ¸ðµç ±âÁ¸ DCS ±â¹Ý ±â¹ýµéÀº Àαâ ÀÖ´Â(¸¹Àº ÁúÀÇ ¿äûÀ» ¹Þ´Â) µ¥ÀÌŸ ¿µ¿ª¿¡ ´ëÇÑ ÁúÀÇ ºÎÇÏ°¡ °í·ÁµÇÁö ¾Ê¾Ò±â ¶§¹®¿¡, °á°úÀûÀ¸·Î Àüü ¼¾¼ ³×Æ®¿öÅ©ÀÇ ¼ö¸íÀÌ ´ÜÃàµÈ´Ù. ±×·¡¼ º» ³í¹®¿¡¼´Â ÀúÀå ºÎÇϻӸ¸ ¾Æ´Ï¶ó ÁúÀÇ ºÎÇϵµ È¿°úÀûÀ¸·Î ÇØ°áÇÒ ¼ö ÀÖ´Â »õ·Î¿î DCS ±â¹Ý ±â¹ýÀÎ TPDCS(Time parameterized DCS)¸¦ Á¦¾ÈÇÑ´Ù. Á¦¾ÈÇÏ´Â ±â¹ýÀº µ¥ÀÌŸ Â÷¿ø»Ó¸¸ ¾Æ´Ï¶ó ½Ã°£ Â÷¿øÀ» ÇÔ²² °í·ÁÇÏ¿© ¼¾¼¿¡ ÇÒ´çµÇ´Â µ¥ÀÌŸ ¿µ¿ªÀ» ºÐÇÒÇÑ´Ù. Á¦¾ÈÇÏ´Â ¹æ¹ýÀº µ¥ÀÌŸ ÀúÀå°ú ÁúÀÇ Ã³¸® ºÐ»êÀ» ÅëÇØ Àüü ¼¾¼ ³×Æ®¿öÅ©ÀÇ ¼ö¸íÀ» Å©°Ô ¿¬Àå½ÃŲ´Ù. ¶ÇÇÑ º» ³í¹®¿¡¼´Â ´ëÇ¥ÀûÀÎ ±âÁ¸ DCS±â¹Ý ±â¹ýµé°ú ´Ù¾çÇÑ ¼º´É ºñ±³ Æò°¡¸¦ ÅëÇØ Á¦¾ÈÇÏ´Â ±â¹ýÀÇ ¿ì¼ö¼ºÀ» º¸ÀδÙ. |
¿µ¹®³»¿ë (English Abstract) |
In wireless sensor networks, various schemes have been proposed to store and process sensed data efficiently. A Data-Centric Storage(DCS) scheme assigns distributed data regions to sensors and stores sensed data to the sensor which is responsible for the data region overlapping the data. The DCS schemes have been proposed to reduce the communication cost for transmitting data and process exact queries and range queries efficiently. Recently, KDDCS that readjusts the distributed data regions dynamically to sensors based on K-D tree was proposed to overcome the storage hot-spots. However, the existing DCS schemes including KDDCS suffer from Query Hot-Spots that are formed if the query regions are not uniformly distributed. As a result, it causes reducing the life time of the sensor network. In this paper, we propose a new DCS scheme, called TPDCS (Time-Parameterized DCS), that avoids the problems of storage hot-spots and query hot-spots. To decentralize the skewed data and queries, the data regions are assigned by a time dimension as well as data dimensions in our proposed scheme. Therefore, TPDCS extends the life time of sensor networks. It is shown through various experiments that our scheme outperform the existing schemes. |
Å°¿öµå(Keyword) |
¼¾¼ ³×Æ®¿öÅ©
µ¥ÀÌŸ Á᫐ ÀúÀå
½Ã°£ ¸Å°³º¯¼ö
¿¡³ÊÁö È¿À²
Sensor Network
DCS(Data-Centric Storage)
Time Parameter
Energy Efficiency
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