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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) IEEE 802.15.4 ½½·Ô ±â¹Ý CSMA/CA¿¡¼­ ½Ã½ºÅÛ Ã³¸®À² Çâ»óÀ» À§ÇÑ ´Ü¸» ¼ö ÃßÁ¤À» ÅëÇÑ ¹é¿ÀÇÁ ±â°£ Æ©´× ±â¹ý
¿µ¹®Á¦¸ñ(English Title) Tuning Backoff Period for Enhancing System Throughput with Estimating Number of Devices in IEEE 802.15.4 Slotted CSMA/CA
ÀúÀÚ(Author) ÀÌ¿øÇü   Ȳȣ¿µ   Won Hyoung Lee   Ho Young Hwang  
¿ø¹®¼ö·Ïó(Citation) VOL 22 NO. 09 PP. 1243 ~ 1249 (2018. 09)
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(Korean Abstract)
º» ³í¹®¿¡¼­´Â IEEE 802.15.4 ½½·Ô ±â¹Ý CSMA/CA(Slotted Carrier Sense Multiple Access with Collision Avoidance) ³×Æ®¿öÅ©¿¡¼­ ½Ã½ºÅÛ Ã³¸®À² Çâ»óÀ» À§ÇØ µ¿ÀÛ ÁßÀÎ ´Ü¸» ¼ö ÃßÁ¤À» ÅëÇÑ ¹é¿ÀÇÁ ±â°£ Æ©´× ±â¹ýÀ» Á¦¾ÈÇÑ´Ù. IEEE 802.15.4 ½½·Ô ±â¹Ý CSMA/CA ³×Æ®¿öÅ©¿¡¼­´Â °¢ ´Ü¸»ÀÌ Ã¤³ÎÀ» Ç×»ó ¼¾½ÌÇÏÁö´Â ¾ÊÀ¸¹Ç·Î, Á¦¾ÈÇÏ´Â ±â¹ý¿¡¼­´Â ä³ÎÀ» Ç×»ó ¼¾½ÌÇÒ ¼ö ÀÖ´Â PAN(Personal Area Network) ÄÚµð³×ÀÌÅ͸¦ »ç¿ëÇÏ¿© µ¿ÀÛ ÁßÀÎ ´Ü¸» ¼ö¸¦ ÃßÁ¤ÇÑ´Ù. ÀÌ ¶§, ½Ç½Ã°£ ´Ü¸» ¼ö ÃßÁ¤À» À§ÇØ ´Ü¼ø À̵¿ Æò±Õ ÇÊÅ͸¦ »ç¿ëÇÑ´Ù. PAN ÄÚµð³×ÀÌÅÍ´Â ÃßÁ¤ÇÑ ´Ü¸» ¼ö¿¡ µû¶ó Æ©´×ÇÑ ÃÖÀûÀÇ ¹é¿ÀÇÁ ±â°£À» ºñÄÜ ÇÁ·¹ÀÓ¿¡ ´ã¾Æ PAN ÄÚµð³×ÀÌÅÍ¿¡ ¿¬°áµÈ ´Ü¸»µé¿¡°Ô Àü´ÞÇÑ´Ù. ½Ã¹Ä·¹À̼ÇÀ» ÅëÇØ Á¦¾ÈÇÏ´Â ±â¹ýÀÇ ´Ü¸» ¼ö ÃßÁ¤¿¡ ´ëÇÑ ¼º´É°ú ½Ã½ºÅÛ Ã³¸®À²¿¡ ´ëÇÑ ¼º´ÉÀ» Æò°¡ÇÑ´Ù. ½Ã¹Ä·¹ÀÌ¼Ç °á°ú¸¦ ÅëÇØ Á¦¾ÈÇÏ´Â ±â¹ýÀÌ IEEE 802.15.4 Ç¥Áغ¸´Ù ´õ ³ôÀº ½Ã½ºÅÛ Ã³¸®À²À» ¾òÀ» ¼ö ÀÖÀ½À» º¸ÀδÙ.
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(English Abstract)
In this paper, we propose a scheme that tunes the backoff period for enhancing the system throughput with estimating the number of devices in IEEE 802.15.4 slotted carrier sense multiple access with collision avoidance (CSMA/CA) networks. Since each device does not sense the channel always in IEEE 802.15.4 slotted CSMA/CA networks, a personal area network (PAN) coordinator is used to estimate the number of active devices. The PAN coordinator broadcasts an optimal backoff period for the estimated number of devices through a beacon frame. In order to estimate the number of devices in run time, a simple moving average filter is utilized. We show the performance of our proposed scheme in terms of the estimated number of devices and the system throughput. The simulation results show that our proposed scheme can obtain higher system throughput than the IEEE 802.15.4 standard.
Å°¿öµå(Keyword) IEEE 802.15.4   CSMA/CA   ½Ã½ºÅÛ Ã³¸®À²   ¹é¿ÀÇÁ ±â°£   IEEE 802.15.4   CSMA/CA   System Throughput   Backoff Period  
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