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ÇѱÛÁ¦¸ñ(Korean Title) |
¸ð¹ÙÀÏ ¼¾¼³ëµåµéÀÇ Çùµ¿Çü ´Ü°èÀû À̵¿±â¹ý ±â¹ÝÀÇ ¿¡³ÊÁö È¿À²ÀûÀÎ µ¿Àû ¼¾¼³×Æ®¿öÅ© Ä¿¹ö¸®Áö °ü¸® |
¿µ¹®Á¦¸ñ(English Title) |
Collaborative Stepwise Movement of Mobile Sensor Nodes for Energy Efficient Dynamic Sensor Network Coverage Maintenance |
ÀúÀÚ(Author) |
Çѳì¼Õ
±è¼ºÈ¯
Ngoc Soc Han
Seong Whan Kim
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¿ø¹®¼ö·Ïó(Citation) |
VOL 16-C NO. 04 PP. 0535 ~ 0542 (2009. 08) |
Çѱ۳»¿ë (Korean Abstract) |
¹«¼±¼¾¼³×Æ®¿öÅ©´Â, ´Ù¼öÀÇ ¼¾¼³ëµå°¡ ³ÐÀº Áö¿ª¿¡ ¹èÄ¡µÇ¾î ÀÚ½ÅÀÇ Àü¿ø¿¡ ÀÇÇØ µ¿ÀÛÇÏ°í ´Ù¸¥ ¼¾¼³ëµå¿Í Çù·ÂÇÏ¿© ȯ°æ°Ëħ ¶Ç´Â ¹°¸®·® °ËħÀ» ¼öÇàÇÏ´Â ¹«¼±³×Æ®¿öÅ©·Î Á¤ÀÇÇÑ´Ù. °¢°¢ÀÇ ¼¾¼³ëµåµéÀº ÀÚ½ÅÀÇ ¹èÅ͸®Àü¿ø¼Ò¸ð¸¦ ÃÖ¼ÒÈÇÏ¿©, Àå±â°£ »ç¿ëÇÒ ¼ö ÀÖ¾î¾ß Çϸç, ¼¾¼³ëµå¸¦ ÀûÀýÇÏ°Ô ¹èÄ¡ÇÏ¿© Àüü ³×Æ®¿öÅ© Ä¿¹ö¸®Áö¸¦ Á¦°øÇÒ ¼ö ÀÖ¾î¾ß ¹«¼±¼¾¼³×Æ®¿öÅ©ÀÇ ¼ö¸íÀ» ´ÃÀÏ ¼ö ÀÖ´Ù. Ãʱ⠼¾¼³ëµåÀÇ ¹èÄ¡·Î´Â ¼¾¼µéÀÇ ¹èÅ͸® ¼ö¸í µîÀÇ ÀÌÀ¯·Î Á¦¾àÀÌ ÀÖÀ¸¸ç, ¸ð¹ÙÀϼ¾¼³ëµå´Â ¼¾¼°¡ À̵¿ÇÏ¿© »õ·Î¿î Ä¿¹ö¸®Áö¸¦ Á¦°øÇÔÀ¸·Î½á, ÀÌ·¯ÇÑ Á¦¾àÁ¶°ÇÀ» ¿ÏÈÇÒ ¼ö ÀÖ´Ù. º» ³í¹®¿¡¼´Â perimeter coverage property¸¦ ¸¸Á·ÇÏ´Â ¸ð¹ÙÀÏ ¼¾¼µéÀÇ ´Ü°èÀûÀÎ À̵¿À» ÅëÇÑ Ä¿¹ö¸®Áö Á¦°ø±â¹ýÀ» Á¦¾ÈÇÑ´Ù. °¢°¢ÀÇ ¸ð¹ÙÀÏ ¼¾¼³ëµåµéÀº ÀÌ¿ôÇÑ ¼¾¼³ëµåµéÀÌ dead ³ëµåÀÎÁö ÆÇ´ÜÇÏ°Ô µÇ¸ç, dead ³ëµåÀÎ °æ¿ì, ¼¾¼³×Æ®¿öÅ©ÀÇ Ä¿¹ö¸®Áö holeÀ» ¸¸µå´ÂÁö ¿©ºÎ¸¦ ÆÇ´ÜÇÑ ÈÄ, °¢°¢ÀÇ ¸ð¹ÙÀÏ ¼¾¼³ëµåµéÀº holeÀÇ Áß½ÉÁ¡À» °è»êÇÏ°í, °ü·ÃµÈ ¼¾¼³ëµåµéÀÌ Çùµ¿ÇÏ¿©, ´Ü°èÀûÀ¸·ÎÀ̵¿ÇÏ¿©, ÃÖÁ¾ holeÀ» Ä¿¹öÇÏ´Â »õ·Î¿î ¼¾¼³×Æ®¿öÅ©¸¦ Çü¼ºÇÏ°Ô µÈ´Ù. º» Á¦¾È±â¹ýÀ» ½Ã¹Ä·¹À̼ÇÇÏ¿© DCM ±â¹ý°ú ºñ±³ÇÑ °á°ú, ¿¡³ÊÁö È¿À²À» °áÁ¤ÇÏ´Â Àüü ¿òÁ÷ÀӰŸ® Ãø¸é¿¡¼ ÃÖ¼Ò 50% ÀÌ»óÀÇ ¼º´ÉÇâ»óÀ» º¸ÀÓÀ» È®ÀÎÇÏ¿´´Ù. |
¿µ¹®³»¿ë (English Abstract) |
Wireless Sensor Network (WSN) is a wireless network consisting of spatially distributed autonomous devices, using sensors to cooperatively monitor physical or environmental conditions. WSNs face the critical challenge of sustaining long-term operation on limited battery energy. Coverage maintenance has been proposed as a promising approach to prolong network lifetime. Mobile sensors equipped with communication devices can be leveraged to overcome the coverage problem. In this paper, we propose a stepwise movement scheme using perimeter coverage property for the coverage maintenance problem. In our scheme, each sensor monitors neighboring dead nodes, determines vulnerable node (i.e. dead node which makes uncovered area), computes the center of uncovered area HC, and makes a coordinated stepwise movement to compensate the uncovered area. In our experimental results, our scheme shows at least 50 % decrease in the total moving distance which determines the energy efficiency of mobile sensor. |
Å°¿öµå(Keyword) |
¹«¼±¼¾¼³×Æ®¿öÅ©
À̵¿¼º
Ä¿¹ö¸®Áö ¹®Á¦
Wireless Sensor Network
Mobility
Coverage Problem
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