• Àüü
  • ÀüÀÚ/Àü±â
  • Åë½Å
  • ÄÄÇ»ÅÍ
´Ý±â

»çÀÌÆ®¸Ê

Loading..

Please wait....

±¹³» ³í¹®Áö

Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸°úÇÐȸ ³í¹®Áö > Á¤º¸°úÇÐȸ³í¹®Áö (Journal of KIISE)

Á¤º¸°úÇÐȸ³í¹®Áö (Journal of KIISE)

Current Result Document : 9 / 32 ÀÌÀü°Ç ÀÌÀü°Ç   ´ÙÀ½°Ç ´ÙÀ½°Ç

ÇѱÛÁ¦¸ñ(Korean Title) OpenFlow°¡ Àû¿ëµÈ ¹«¼±·£ ȯ°æ¿¡¼­ AP Áý´ÜÈ­ ¹× Àü¼Û ÆÄ¿ö Á¶Àý¿¡ ±â¹ÝÇÑ °£¼· ¿ÏÈ­ ±â¹ý
¿µ¹®Á¦¸ñ(English Title) An Interference Reduction Scheme Using AP Aggregation and Transmit Power Control on OpenFlow-based WLAN
ÀúÀÚ(Author) µµ¹Ì¸²   Á¤»óÈ­   ¾Èâ¿ì   Mi-Rim Do   Sang-Hwa Chung   Chang-Woo Ahn  
¿ø¹®¼ö·Ïó(Citation) VOL 42 NO. 10 PP. 1254 ~ 1267 (2015. 10)
Çѱ۳»¿ë
(Korean Abstract)
ÃÖ±Ù ¹«ºÐº°ÇÑ ¾×¼¼½º Æ÷ÀÎÆ® ¼³Ä¡·Î ÀÎÇØ ¹«¼±·£ °£¼·ÀÌ ¸¹ÀÌ ¹ß»ýÇÏ°í ÀÖÀ¸¸ç, ÀÌ·¯ÇÑ ¹®Á¦¸¦ ÇØ°áÇϱâ À§ÇØ ¸¹Àº ±â¹ýÀÌ Á¦¾ÈµÇ¾ú´Ù. ¾×¼¼½º Æ÷ÀÎÆ® Áý´ÜÈ­ ±â¹ýÀº ƯÁ¤ ¾×¼¼½º Æ÷ÀÎÆ®·Î ½ºÅ×À̼ÇÀÇ ¿¬°áÀ» À̵¿½ÃÄÑ Àü¼ÛÀ» ¼öÇàÇÏ´Â ¾×¼¼½º Æ÷ÀÎÆ®¸¦ ÁÙÀÌ´Â ¹æ½ÄÀÌ´Ù. ÀÌ ¹æ½ÄÀº ½ºÅ×À̼ÇÀÇ ¿¬°áÀ» °­Á¦·Î À̵¿½ÃÅ°¹Ç·Î ƯÁ¤ ½ºÅ×À̼ÇÀÇ Àü¼Û ¼º´É ÀúÇÏ°¡ ¹ß»ýÇÒ ¼ö ÀÖ´Ù. ¾×¼¼½º Æ÷ÀÎÆ® Àü¼Û ÆÄ¿ö Á¶Àý ±â¹ýÀÇ °æ¿ì ¿¬°áÀÌ ²÷¾îÁö´Â ½ºÅ×À̼ÇÀÌ ¹ß»ýÇϰųª ƯÁ¤ °ª ÀÌÇÏ·Î ÆÄ¿ö¸¦ Á¶ÀýÇÒ °æ¿ì ÀüüÀûÀÎ Àü¼Û ¼º´É °¨¼Ò°¡ ÀϾ ¼ö ÀÖ´Ù. µÎ ±â¹ýÀ» °áÇÕÇϸé Áý´ÜÈ­¸¦ ÅëÇØ Àü¼ÛÀ» ¼öÇàÇÏ´Â ¾×¼¼½º Æ÷ÀÎÆ®°¡ ÁÙ¾î °£¼·ÀÌ ÁÙ¾îµé°í ¼¼ºÎÀûÀÎ Àü¼Û ÆÄ¿ö Á¶ÀýÀ» ÅëÇØ °£¼· ¹üÀ§¸¦ ´õ ÁÙÀÏ ¼ö ÀÖ´Ù. ±×·¯³ª µÎ ±â¹ýÀ» ´Ü¼ø °áÇÕÇϸé Áý´ÜÈ­ ¼öÇà ÈÄ¿¡ ÆÄ¿ö Á¶ÀýÀÌ °¡´ÉÇÑ °æ¿ìÀÇ ¼ö°¡ Àû¾îÁö°Å³ª ÆÄ¿ö Á¶Àý ½Ã ¿¬°áÀÌ ²÷¾îÁö´Â ½ºÅ×À̼ÇÀÌ ´Ã¾î³ª ¼º´É Çâ»óÀÌ ´ÜÀÏ ±â¹ýº¸´Ù ¹Ì¹ÌÇÑ »óȲÀÌ ¹ß»ýÇÒ ¼ö ÀÖ´Ù. ±×·¯¹Ç·Î º» ³í¹®¿¡¼­´Â OpenFlow ±â¹Ý ¹«¼±·£ ȯ°æ¿¡¼­ ¾×¼¼½º Æ÷ÀÎÆ® Áý´ÜÈ­ ±â¹ý, ÆÄ¿ö Á¶Àý ±â¹ýÀ» °áÇÕÇÏ¿© °¢ ±â¹ýÀÇ ´ÜÁ¡À» º¸¿ÏÇÏ°í Áý´ÜÈ­¸¦ ¼öÇàÇÒ ¶§ ´ÙÀ½ ´Ü°è Àü¼Û ÆÄ¿ö Á¶Àý ¼öÇà ½Ã ÆÄ¿ö Á¶Àý °¡´ÉÇÑ °æ¿ìÀÇ ¼ö°¡ ¸¹¾ÆÁöµµ·Ï °í·ÁÇÏ¿© °£¼·À» È¿À²ÀûÀ¸·Î ¿ÏÈ­ÇÏ´Â ±â¹ýÀ» Á¦¾ÈÇÑ´Ù. ½Ã¹Ä·¹À̼ÇÀ» ÅëÇØ °¢ ±â¹ýÀ» ºñ±³ÇÑ °á°ú Á¦¾È ±â¹ýÀÇ Æò±Õ Àü¼Û Áö¿¬ ½Ã°£Àº Áý´ÜÈ­ ±â¹ý¿¡ ºñÇØ ÃÖ´ë 12.8%, ÆÄ¿ö Á¶Àý ±â¹ý¿¡ ºñÇØ ÃÖ´ë 18.1% °¨¼ÒÇÏ°í, °£¼·¿¡ ÀÇÇÑ ÆÐŶ ¼Õ½Ç·üÀº Á¦¾È ±â¹ýÀÌ Áý´ÜÈ­ ±â¹ý¿¡ ºñÇØ ÃÖ´ë 24.9%, ÆÄ¿ö Á¶Àý ±â¹ý¿¡ ºñÇØ ÃÖ´ë 46.7% °¨¼ÒÇÏ¿´´Ù. ¶ÇÇÑ Áý´ÜÈ­ ±â¹ý°ú ÆÄ¿ö Á¶Àý ±â¹ýÀº ƯÁ¤ ½ºÅ×À̼ÇÀÇ µ¥ÀÌÅÍ Ã³¸®À²ÀÌ °¨¼ÒÇÏ´Â ºÎÀÛ¿ëÀÌ ¹ß»ýÇÏ´Â ¹Ý¸é Á¦¾È ±â¹ýÀº ƯÁ¤ ½ºÅ×À̼ÇÀÇ Ã³¸®À² °¨¼Ò ¾øÀÌ Àüü µ¥ÀÌÅÍ Ã³¸®À²À» Áõ°¡½ÃÅ´À» È®ÀÎÇÒ ¼ö ÀÖ¾ú´Ù.
¿µ¹®³»¿ë
(English Abstract)
Recently, excessive installations of APs have caused WLAN interference, and many techniques have been suggested to solve this problem. The AP aggregation technique serves to reduce active APs by moving station connections to a certain AP. Since this technique forcibly moves station connections, the transmission performance of some stations may deteriorate. The AP transmit power control technique may cause station disconnection or deterioration of transmission performance when power is reduced under a certain level. The combination of these two techniques can reduce interference through AP aggregation and narrow the range of interferences further through detailed power adjustment. However, simply combining these techniques may decrease the probability of power adjustment after aggregation and increase station disconnections upon power control. As a result, improvement in performance may be insignificant. Hence, this study suggests a scheme to combine the AP aggregation and the AP transmit power control techniques in OpenFlow-based WLAN to ameliorate the disadvantages of each technique and to reduce interferences efficiently by performing aggregation for the purpose of increasing the probability of adjusting transmission power. Simulations reveal that the average transmission delay of the suggested scheme is reduced by as much as 12.8% compared to the aggregation scheme and by as much as 18.1% compared to the power control scheme. The packet loss rate due to interference is reduced by as much as 24.9% compared to the aggregation scheme and by as much as 46.7% compared to the power control scheme. In addition, the aggregation scheme and the power control scheme decrease the throughput of several stations as a side effect, but our scheme increases the total data throughput without decreasing the throughput of each station.
Å°¿öµå(Keyword) ¹«¼±·£   °£¼· ¿ÏÈ­   AP Áý´ÜÈ­   AP ÆÄ¿ö Á¶Àý   OpenFlow   SDN(Software-Defined Networking)   WLAN   interference reduction   AP aggregation   AP power control   OpenFlow   SDN(Software-Defined Networking)  
ÆÄÀÏ÷ºÎ PDF ´Ù¿î·Îµå