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ÇѱÛÁ¦¸ñ(Korean Title) IEEE 802.11 ¹«¼± ³×Æ®¿öÅ©¿¡¼­ÀÇ Àü¼Û¼Óµµ ÀÌ»ó ¿ÏÈ­¸¦ À§ÇÑ ´ÙÁß Ã¤³Î ÇÁ·ÎÅäÄÝÀÇ ¼º´É ºñ±³
¿µ¹®Á¦¸ñ(English Title) Performance Comparison of Multi-Channel Protocols for Rate Anomaly Mitigation in IEEE 802.11 Wireless Networks
ÀúÀÚ(Author) ±è¼®Çü   ±èµ¿¿í   ¼­¿µÁÖ   ±Çµ¿Èñ   Sok-Hyong Kim   Dong-Wook Kim   Young-Joo Suh   Dong-Hee Kwon  
¿ø¹®¼ö·Ïó(Citation) VOL 38 NO. 02 PP. 0095 ~ 0101 (2011. 04)
Çѱ۳»¿ë
(Korean Abstract)
IEEE 802.11 ¹«¼± ³×Æ®¿öÅ©´Â Àúºñ¿ëÀ¸·Î À¯¿¬¼º ÀÖ´Â ³×Æ®¿öÅ© ±¸¼ºÀ» À§ÇØ ³Î¸® ÀÌ¿ëµÇ°í ÀÖ´Ù. ÃÖ½ÅÀÇ IEEE 802.11 ÀåºñµéÀº ´ÙÁß Ã¤³Î(multi-channel)°ú ´ÙÁß Àü¼Û¼Óµµ(multi-rate) ±â´ÉÀ» Áö¿øÇÑ´Ù. IEEE 802.11 ´ÙÁß Àü¼Û¼Óµµ ³×Æ®¿öÅ©¿¡¼­´Â ³ôÀº Àü¼Û¼Óµµ ¸µÅ©°¡ ³·Àº Àü¼Û¼Óµµ ¸µÅ©¿Í °°Àº ä³ÎÀ» °øÀ¯ÇÒ ¶§, ½É°¢ÇÑ ¼º´É ÀúÇϸ¦ °Þ°Ô µÈ´Ù. ÀÌ´Â RA(Rate Anomaly) ¹®Á¦·Î ¾Ë·ÁÁ® ÀÖÀ¸¸ç, RA ¹®Á¦¸¦ IEEE 802.11ÀÇ Ã¤³Î·Î ±Øº¹Çϱâ À§ÇØ ´Ù¾çÇÑ ´ÙÁß Ã¤³Î ÇÁ·ÎÅäÄݵéÀÌ Á¦¾ÈµÇ¾ú´Ù. º» ³í¹®¿¡¼­´Â RA ¹®Á¦¸¦ ´ÙÁß Ã¤³ÎÀ» »ç¿ëÇÏ¿© ¿ÏÈ­ÇÏ´Â ±âÁ¸ ÇÁ·ÎÅäÄݵéÀÇ ¼º´ÉÀ» ½Ã¹Ä·¹À̼ÇÀ» ÅëÇØ ºñ±³ÇÑ´Ù. ¶ÇÇÑ, ´ÙÁß Ã¤³ÎÀ» »ç¿ëÇÔ¿¡ µû¸¥ RA ¿ÏÈ­ È¿°ú¸¦ °üÂûÇϱâ À§ÇØ RA¸¦ °í·ÁÇÏÁö ¾Ê´Â Àß ¾Ë·ÁÁø ´ÙÁß Ã¤³Î ÇÁ·ÎÅäÄÝ°úµµ ºñ±³ÇÑ´Ù. ºñ±³ °á°ú¸¦ ÅëÇØ RA¸¦ °í·ÁÇϱâ À§ÇÑ ´ÙÁß Ã¤³Î ÇÁ·ÎÅäÄÝ µðÀÚÀÎÀÇ ¿¬±¸ ¹æÇâÀ» Á¦½ÃÇÑ´Ù.
¿µ¹®³»¿ë
(English Abstract)
IEEE 802.11 wireless networks are widely used for flexible network configurations with low-cost. The off-the-shelf IEEE 802.11 devices support multi-channel and multi-rate functionalities. In IEEE 802.11 multi-rate networks, high-rate links experience significant performance degradations when they share the same channel with low-rate links. This is known as rate anomaly problem and various multi-channel protocols are proposed to overcome the rate anomaly problem via channels in IEEE 802.11. In this paper, we compare the existing protocols through simulations, which mitigate the rate anomaly problem by using channels. Also, in order to observe the effect of rate anomaly mitigations by using multiple channels, we also compare them with well-known multi-channel protocols without considering rate anomaly. Through comparison results, we provide the research direction of multi-channel protocol designs for addressing rate anomaly.
Å°¿öµå(Keyword) ´ÙÁß Ã¤³Î   ´ÙÁß Àü¼Û¼Óµµ   ¼º´É ÀÌ»ó   ¹«¼± ³×Æ®¿öÅ©   Multi-Channel   Multi-Rate   Rate Anomaly   Wireless Networks  
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