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ÇѱÛÁ¦¸ñ(Korean Title) |
IEEE 802.11 ¸ÖƼ ¶óµð¿À ¹«¼± ¸Þ½¬ ³×Æ®¿öÅ©¸¦ À§ÇÑ ¿ä±¸Çü Æ®·¡ÇÈ ±â¹Ý ä³Î ÇÒ´ç ¹× ¶ó¿ìÆà ÇÁ·ÎÅäÄÝ |
¿µ¹®Á¦¸ñ(English Title) |
A Traffic On-demand-based Channel Assignment and Routing Protocol for IEEE 802.11 Multi-Radio Wireless Mesh Networks |
ÀúÀÚ(Author) |
³ªÇü¿ø
±è¼®Çü
¼¿µÁÖ
Hyeong-Won Na
Sok-Hyong Kim
Young-Joo Suh
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¿ø¹®¼ö·Ïó(Citation) |
VOL 38 NO. 06 PP. 0460 ~ 0466 (2011. 12) |
Çѱ۳»¿ë (Korean Abstract) |
¹«¼± ¸Þ½¬ ³×Æ®¿öÅ©(Wireless Mesh Network, WMN)´Â ¹«¼± ¸µÅ©¸¦ ¸ÖƼȩ ¹æ½ÄÀ¸·Î »ç¿ëÇÏ¿© ¹«¼± ¹éº» ³×Æ®¿öÅ©¸¦ Çü¼ºÇÔÀ¸·Î½á »ç¿ëÀÚ¿¡°Ô ÀÎÅÍ³Ý Á¢¼ÓÀ» Á¦°øÇϱâ À§ÇÑ ±â¼úÀÌ´Ù. WMN¸¦ À§ÇØ IEEE 802.11 ±â¼úÀÌ ³Î¸® ¾²ÀÌ°í ÀÖÀ¸¸ç, IEEE 802.11´Â Ç¥ÁØ¿¡ µû¶ó ÃÖ´ë 3°³ ¶Ç´Â 12°³ÀÇ °ãÄ¡Áö ¾Ê´Â ä³ÎÀ» Áö¿øÇÑ´Ù. ÇÏÁö¸¸, WMN´Â ¸ÖƼȩ ȯ°æÀ̱⠶§¹®¿¡ È©¼ö°¡ Áõ°¡ÇÔ¿¡ µû¶ó ¼º´ÉÀÌ ±Þ°ÝÈ÷ ¶³¾îÁö¸ç, À̸¦ ÇØ°áÇϱâ À§ÇÑ Ã¤³Î ÇÒ´ç ±â¹ýÀº ¸Å¿ì Áß¿äÇÏ´Ù. µû¶ó¼, º» ³í¹®¿¡¼´Â ¸ÖƼ ä³Î WMN¿¡¼ÀÇ Æ®·¡ÇÈ ¿ä±¸¿¡ ¸ÂÃá ä³Î ÇÒ´ç°ú °æ·Î Ž»öÀ» ºÐ»êÀûÀÎ(Distributed) ¹æ½ÄÀ¸·Î ½ÇÇàÇÏ´Â OnCAR(On-demand Channel Assignment and Routing) ÇÁ·ÎÅäÄÝÀ» Á¦¾ÈÇÑ´Ù. OnCAR´Â Æ®·¡ÇÈ ¿ä±¸¿¡ µû¸¥ ä³Î ÇÒ´çÀÌ °¡´ÉÇÏ°í, ä³Î ´Ù¾ç¼º(diversity)À» °í·ÁÇÑ °æ·Î Ž»ö ±â¹ýÀ» Á¦°øÇÑ´Ù. NS-2¿¡¼ÀÇ ½ÇÇèÀ» ÅëÇØ OnCAR°¡ ±âÁ¸¿¡ WMNÀ» À§ÇØ Á¦¾ÈµÈ ä³Î ÇÒ´ç ÇÁ·ÎÅäÄݵ鿡 ºñÇØ Çâ»óµÈ ³×Æ®¿öÅ© ¼º´ÉÀ» Á¦°øÇÔÀ» ÀÔÁõÇÏ¿´´Ù.
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¿µ¹®³»¿ë (English Abstract) |
Wireless Mesh Networks (WMNs) provide Internet accesses to users by forming backbone networks via multi-hop wireless links. IEEE 802.11 is widely used for WMNs, and IEEE 802.11 standards support 3 or 12 orthogonal channels. However, in multi-hop WMNs, the performance falls sharply with increasing hop count. To solve this problem, channel assignment is very important. Hence, in this paper, we propose anOn-demand Channel Assignment and Routing (OnCAR) protocol that uses distributed channel assignment and routing designed for on-demand traffic. OnCAR can assign channels in a traffic on-demand fashion and provides routing by considering channel diversity. Through NS-2 simulations, we demonstrate that OnCAR shows improved network performance compared with existing channel assignment protocols for WMNs.
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Å°¿öµå(Keyword) |
´ÙÁß Ã¤³Î
¶ó¿ìÆÃ
¹«¼± ¸Þ½¬ ³×Æ®¿öÅ©
IEEE 802.11
multi-channel
routing
wireless mesh networks
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