Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)
Current Result Document :
ÇѱÛÁ¦¸ñ(Korean Title) |
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¿µ¹®Á¦¸ñ(English Title) |
TDM based MAC protocol for throughput enhancement in dense wireless LANs area |
ÀúÀÚ(Author) |
±ÇÇõÁø
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Hyeok-Jin Kwon
Gyung-Ho Hwang
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¿ø¹®¼ö·Ïó(Citation) |
VOL 22 NO. 03 PP. 0534 ~ 0541 (2018. 03) |
Çѱ۳»¿ë (Korean Abstract) |
¹«¼± ·£ ±â±âÀÇ º¸±Þ¿¡ µû¶ó °°Àº ¹«¼± ä³Î¿¡ Á¸ÀçÇÏ´Â ´Ü¸»ÀÇ ¼ö°¡ Áõ°¡ÇÏ°í ÀÖ´Ù. ±âÁ¸ÀÇ ¹«¼± ·£ ÇÁ·ÎÅäÄÝÀÎ CSMA/CA´Â ·£´ý ¹é¿ÀÇÁ ¹æ½ÄÀ» »ç¿ëÇÑ´Ù. ·£´ý ¹é¿ÀÇÁ ¹æ½ÄÀº °°Àº ä³Î¿¡ Á¸ÀçÇÏ´Â ´Ü¸»ÀÇ °³¼ö°¡ ¼ö½Ê °³ ÀÌ»ó µÇ´Â ¹ÐÁý Áö¿ª¿¡¼ ´Ü¸»°£ÀÇ Ãæµ¹ÀÌ Àæ¾Æ Ç¥ÁØ CSMA/CA ÇÁ·ÎÅäÄÝÀÇ ¼º´É ÀúÇÏ°¡ ½É°¢ÇÏ°Ô ¹ß»ýÇÑ´Ù. ÀÌ¿Í °°Àº ÇÁ·ÎÅäÄÝÀÇ ¼º´É ÀúÇϸ¦ ¸·±â À§ÇØ IEEE 802.11ah Ç¥ÁØ¿¡¼´Â Restricted Access Window(RAW) ¹«¼± Á¢¼Ó ¹æ½ÄÀ» Á¦¾ÈÇÏ¿´´Ù. RAW´Â ´Ü¸»À» ¿©·¯ ±×·ìÀ¸·Î ³ª´² µ¿½Ã Á¢¼Ó ´Ü¸»ÀÇ ¼ö¸¦ Á¦ÇÑÇÏ¿© ¼º´ÉÀ» °³¼±ÇÏ¿´´Ù. º» ³í¹®¿¡¼´Â ±âÁ¸ÀÇ RAW¹æ½ÄÀ» °³¼±ÇÏ¿© Æ®·¡ÇÈ º¯È¿¡ µû¸¥ »õ·Î¿î ±×·ì»ý¼º, ±×·ì Á¦°Å¿Í ±×·ì Àç¹èÄ¡ ¾Ë°í¸®ÁòÀ» »ç¿ëÇÏ¿© ä³Î Á¢¼Ó¿¡ °üÇÑ ¼º´ÉÀ» ³ôÀÏ ¼ö ÀÖ´Â ¹æ¾ÈÀ» Á¦½ÃÇÑ´Ù.
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¿µ¹®³»¿ë (English Abstract) |
The number of stations existing in the same wireless channel is increasing due to the spread of the wireless LAN devices. CSMA/CA, a conventional wireless LAN protocol, uses a random backoff method. In the random backoff scheme, collision between stations is frequent in a dense region where the number of stations existing in the same channel is several tens or more, and the performance of the performance degradation of such a protocol, the IEEE 802.11ah standard proposed a Restricted Access Window(RAW) wireless access method. RAW improves performance by limiting the number of concurrent access stations by dividing the stations into several groups. In this paper, we propose a method to improve the performance of channel connection by using new group creation, group removal and group relocation algorithm according to traffic change by improving existing RAW method.
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Å°¿öµå(Keyword) |
MAC ÇÁ·ÎÅäÄÝ
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IEEE 802.11ah
Àü¼Û·ü Çâ»ó
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MAC protocol
Wireless LAN
IEEE 802.11ah
throughput enhancement
dense wireless LANs area
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