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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)

Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)

Current Result Document :

ÇѱÛÁ¦¸ñ(Korean Title) ¼¾¼­ ³×Æ®¿öÅ©¿¡¼­ ½Ç½Ã°£ ÀÀ¿ëÀ» À§ÇÑ Àü¼ÛÁö¿¬°³¼±±â¹ý
¿µ¹®Á¦¸ñ(English Title) A Scheme to Reduce the Transmission Delay for Real-Time Applications in Sensor Networks
ÀúÀÚ(Author) ºóºÀÀ°   ÀÌÁ¾Çø   Bong-Uk Bin   Jong Hyup Lee  
¿ø¹®¼ö·Ïó(Citation) VOL 11 NO. 08 PP. 1493 ~ 1499 (2007. 08)
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(Korean Abstract)
¼¾¼­ ³×Æ®¿öÅ© ȯ°æ¿¡¼­ ½Ç½Ã°£ ÀÀ¿ëÀÌ ¿øÈ°ÇÏ°Ô µ¿ÀÛÇϱâ À§Çؼ­´Â ¼¾½Ì ³ëµå¿¡¼­ºÎÅÍ ½ÌÅ© ³ëµå±îÁöÀÇ ½Ç½Ã°£ Àü¼ÛÀÌ ¿ä±¸µÈ´Ù. ±âÁ¸ÀÇ È¥Àâ Á¦¾î ±â¹ýµéÀº ¼¾¼­³×Æ®¿öÅ©¿¡¼­ È¥Àâ ¹®Á¦¸¦ ÇØ°áÇϱâ À§ÇÑ ¹æ¹ýµéÀ» Á¦¾ÈÇÏ¿´À¸³ª º¸°íÁֱ⸦ º¯°æÇϰųª Áß°£³ëµå¿¡¼­ Àü¼ÛÀ» ¾ïÁ¦ÇÏ´Â ¹æ½ÄÀ̹ǷΠÀü¼Û Áö¿¬ ¹ß»ýÀÌ °¡´ÉÇÏ¿© ½Ç½Ã°£ ¼¾¼­ ³×Æ®¿öÅ© ÀÀ¿ë¿¡´Â ÀûÇÕÇÏÁö ¾Ê´Ù. º» ³í¹®¿¡¼­´Â ½Ç½Ã°£ µ¥ÀÌÅÍ¿¡ ´ëÇØ Àü¼Û Áö¿¬À» °¨¼Ò½ÃÅ°°í throughputÀ» Áõ°¡½Ãų ¼ö ÀÖ´Â »õ·Î¿î ¸ÞÄ¿´ÏÁòÀ» Á¦¾ÈÇÏ¿´´Ù. ÀÌ ¸ÞÄ¿´ÏÁò¿¡¼­´Â µ¥ÀÌÅ͸¦ ½Ç½Ã°£¼ºÀ» ±âÁØÀ¸·Î ºÐ·ùÇÏ¿© ½Ç½Ã°£¼ºÀ» À¯ÁöÇÏ°í ÀÖ´Â µ¥ÀÌÅ͸¦ ¿ì¼± ó¸®ÇÏ°í ½Ç½Ã°£¼ºÀ» ÀÒÀº µ¥ÀÌÅÍ´Â ºñ½Ç½Ã°£¼º µ¥ÀÌÅÍ¿Í ÇÔ²² ó¸®Åä·Ï ÇÏ¿´´Ù. ¶ÇÇÑ º» ³í¹®¿¡¼­ Á¦¾ÈÇÑ Àü¼Û Áö¿¬ °³¼± ±â¹ýÀ»IEEE 802.15.4MAC °èÃþ¿¡ Àû¿ëÇϱâ À§ÇØ ¼öÁ¤µÈ ÇÁ·¹ÀÓ Æ÷¸Ëµµ ÇÔ²² Á¦¾ÈÇÏ¿´´Ù. ¶ÇÇÑ º» ³í¹®¿¡¼­ Á¦¾ÈÇÑ ±â¹ýÀ» Àû¿ëÇÏ´Â °æ¿ì Àü¼ÛÁö¿¬ ¹× throughput Ãø¸é¿¡¼­ ¾î´À Á¤µµÀÇ ¼º´É°³¼±ÀÌ ÀÌ·ç¾îÁö´ÂÁö¸¦ È®ÀÎÇϱâ À§ÇØ ns-2¸¦ ±â¹ÝÀ¸·Î ½Ã¹Ä·¹À̼ÇÀ» ¼öÇàÇÏ¿´À¸¸ç º» ³í¹®¿¡¼­ Á¦¾ÈÇÑ ±â¹ýÀÌ ½Ç½Ã°£¼ºÀÌ Áß¿äÇÑ ÀÀ¿ë¿¡ Àû¿ëµÉ °æ¿ì ±âÁ¸ÀÇ ±â¹ý¿¡ ºñÇØ ¿ì¼öÇÑ ¼º´ÉÀ» ³ªÅ¸³¿À» È®ÀÎÇÏ¿´´Ù.
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(English Abstract)
Real-time applications in a wireless sensor network environment require real-time transmissions from sensing nodes to sink nodes. Existing congestion control mechanisms have treated congestion problems in sensor networks, but they only adjust the reporting frequency or the sending rate in intermediate nodes. They were not suitable for real-time applications from the transmission delays point of view. In this paper, we suggest a new mechanism that can reduce the transmission delay and can increase the throughput for real-time applications in sensor network. This mechanism classifies data on the real-time characteristics, processes the data maintaining the real-time characteristics prior to the other data such as the non real-time data or the data lost the real-time characteristics. A modified frame format is also proposed in order to apply the mechanism to IEEE 802.15.4 MAC layer. The simulation based on ns-2 is accomplished in order to verify the performance of the suggested scheme from transmission delay and throughput standpoints. The simulation results show that the proposed algorithm has a better performance specifically when it applies to the real-time applications in sensor networks.
Å°¿öµå(Keyword) Sensor Networks   802.15.4a   LR-WPAN   MAC   Real-Time  
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