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ÇѱÛÁ¦¸ñ(Korean Title) |
IEEE 802.16e ½Ã½ºÅÛ¿¡¼ÀÇ µ¿Àû Áֱ⠱â¹ÝÀÇ CQICH °ü¸® ±â¹ý |
¿µ¹®Á¦¸ñ(English Title) |
A CQICH Management Scheme based on Dynamic Period in IEEE 802.16e Systems |
ÀúÀÚ(Author) |
¹éÁÖ¿µ
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±Çµ¿Èñ
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Joo-Young Baek
Jeong-Yoon Lee
Dong-Hee Kwon
Young-Joo Suh
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¿ø¹®¼ö·Ïó(Citation) |
VOL 38 NO. 03 PP. 0170 ~ 0177 (2011. 06) |
Çѱ۳»¿ë (Korean Abstract) |
IEEE 802.16Àº BWA(Broadband Wireless Access) ½Ã½ºÅÛ Ç¥ÁØÀ¸·Î »ç¿ëÀڵ鿡°Ô ³ôÀº ´ë¿ªÆø°ú ³ÐÀº Àü¼Û ¿µ¿ªÀÇ ¼ºñ½º¸¦ Á¦°ø ÇØ ÁÖ´Â ³×Æ®¿öÅ© ±â¼úÀÌ´Ù. IEEE 802.16 ½Ã½ºÅÛ¿¡¼´Â ´Ü¸»ÀÇ Ã¤³Î »óȲ¿¡ ¸Â´Â È¿À²ÀûÀÎ ¼ºñ½º Á¦°øÀ» À§ÇØ, ±âÁö±¹¿¡¼ ´Ü¸»ÀÇ Ã¤³Î »óȲ Á¤º¸¸¦ ¸®Æ÷Æ® ¹Þ´Â´Ù. Ç¥ÁØ¿¡¼´Â ä³Î »óȲ ¸®Æ÷Æ® ¹æ¹ýÀ¸·Î CQICH(channel quality information channel)¸¦ ÅëÇÑ ¸®Æ÷Æ® ¹æ¹ýÀ» Á¤ÀÇÇÏ°í ÀÖ´Ù. CQICH¸¦ ÅëÇÑ Ã¤³Î »óȲ ¸®Æ÷Æ® ¹æ½ÄÀº »óÇ⸵ũ ÇÁ·¹ÀÓ¿µ¿ª ³»ÀÇ ÀÚ¿øÀ» CQICH ¿ëµµ·Î »ç¿ëÇϸç À̸¦ °¢°¢ÀÇ ´Ü¸»µé¿¡°Ô ÇÒ´ç ÇØ ÁÖ°í, ´Ü¸»µéÀº ÁÖ±âÀûÀ¸·Î Àڽſ¡°Ô ÇÒ´çµÈ CQICH¸¦ ÅëÇؼ ÃøÁ¤ÇÑ ÇÏÇ⸵ũ ä³Î »óȲÀ» ±âÁö±¹¿¡°Ô ¸®Æ÷Æ® ÇÏ´Â ¹æ½ÄÀ¸·Î µ¿ÀÛÇÑ´Ù. ÇÏÁö¸¸, Ç¥ÁØ¿¡¼´Â ±¸Ã¼ÀûÀÎ CQICH¸¦ °ü¸®ÇÏ´Â ±â¹ý¿¡ ´ëÇؼ´Â ¸í½ÃÇÏ°í ÀÖÁö ¾Ê´Ù. µû¶ó¼, È¿À²ÀûÀ¸·Î ´Ü¸»ÀÇ Ã¤³Î»óȲ Á¤º¸¸¦ ȹµæÇϱâ À§Çؼ´Â ±âÁö±¹¿¡¼ÀÇ CQICH¸¦ °ü¸®ÇÏ´Â ±â¹ýÀÌ ÇÊ¿äÇÏ´Ù. º» ³í¹®¿¡¼´Â IEEE 802.16e ½Ã½ºÅÛ¿¡¼ÀÇ CQICH °ü¸® ±â¹ýÀ» µðÀÚÀÎ ÇÏ¿´À¸¸ç, ¼º´É ÃøÁ¤À» ÅëÇؼ Á¦¾ÈÇÏ´Â ±â¹ýÀÌ ±âÁö±¹¿¡¼ÀÇ ´Ü¸»ÀÇ Ã¤³Î »óȲÀ» Á¤È®ÇÏ°Ô Àü´Þ ¹ÞÀ¸¸é¼ ¼º´ÉÇâ»óÀ» ³ôÀÓÀ» È®ÀÎÇÏ¿´´Ù. |
¿µ¹®³»¿ë (English Abstract) |
IEEE 802.16 is a BWA (Broadband Wireless Access) system standard that provides a high data rate and wide transmission range to users. To provide the efficient service to users depending on users¡® channel quality, base stations receive channel quality report from users. The IEEE 802.16 standard defines the CQICH (channel quality information channel) report scheme. In the CQICH report scheme, a base station allocates uplink resources which are used for CQICH to users. Then users report their channel quality periodically using the allocated CQICH to the base station. However, the IEEE 802.16 standard does not specify how to manage CQICH. Therefore, a CQICH management scheme is necessary to acquire accurate users¡¯ channel quality efficiently. In this paper, we design a CQICH management scheme for IEEE 802.16 systems. The performance of the proposed scheme has been evaluated by simulations, and we have found that the base station obtains accurate channel quality for users and increases the capacity of IEEE 802.16e systems. |
Å°¿öµå(Keyword) |
IEEE 802.16e ½Ã½ºÅÛ
ä³Î »óȲ
IEEE 802.16e systems
CQICH
channel status
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ÆÄÀÏ÷ºÎ |
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