Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)
Current Result Document :
ÇѱÛÁ¦¸ñ(Korean Title) |
OFDMA ½Ã½ºÅÛ »óÇâ ¸µÅ©¿¡¼, ÀÓÀÇ Á¢±Ù ä³ÎÀÇ Â÷º°ÈµÈ ¼ºñ½º Ç°Áú Á¦°øÀ» À§ÇÑ Backoff±â¹Ý ÀÓÀÇ Á¢±Ù ¾Ë°í¸®Áò ¹× ±× ¼º´É ºÐ¼® |
¿µ¹®Á¦¸ñ(English Title) |
Backoff-based random access algorithm for offering differentiated QoS services in the random access channels of OFDMA systems |
ÀúÀÚ(Author) |
ÀÌ¿µµÎ
±¸Àμö
Young-du Lee
Insoo Koo
|
¿ø¹®¼ö·Ïó(Citation) |
VOL 12 NO. 02 PP. 0360 ~ 0368 (2008. 02) |
Çѱ۳»¿ë (Korean Abstract) |
º» ³í¹®¿¡¼´Â ´ÙÁß ¼ºñ½º ´ÙÁß »ç¿ëÀÚ OFDMA ½Ã½ºÅÛÀÇ ÀÓÀÇ Á¢±Ùä³Î¿¡¼ Â÷º°ÈµÈ ¼ºñ½º Ç°ÁúÀ» Á¦°øÇϱâ À§ÇÏ¿© backoff±â¹Ý ÀÓÀÇ Á¢±Ù ¾Ë°í¸®ÁòÀ» Á¦¾ÈÇÏ°í, ÀÓÀÇ Á¢±Ù ä³ÎÀÇ ÁÖ ÀÚ¿øÀÎ ºÎä³ÎÀÇ ¼ö¿Í PN-ÄÚµåÀÇ ¼ö°¡ ÁÖ¾îÁø °æ¿ì, Á¦¾ÈµÈ ¾Ë°í¸®ÁòÀÇ ¼º´ÉÀ» °¢ ¼ºñ½º Ŭ·¡½º Á¢¼Ó È®·üÀÇ ÇÔ¼ö·Î¼, °¢ ¼ºñ½º Ŭ·¡½ºÀÇ Á¢¼Ó ¼º°ø È®·ü, ó¸®À², ºí·ÎÅ· È®·ü, Á¢¼Ó Áö¿¬°üÁ¡¿¡¼ ºÐ¼®ÇÑ´Ù. ¼öÄ¡Àû ºÐ¼®À» ÅëÇÏ¿© Á¦¾ÈµÈ backoff ±â¹Ý ÀÓÀÇ Á¢±Ù ¾Ë°í¸®ÁòÀÌ ¼·Î ´Ù¸¥ ¼ºñ½º Ŭ·¡½ºÀÇ ÀÓÀÇÁ¢±Ù ½Ãµµµé¿¡°Ô Â÷µîÇÑ ¼ºñ½º Ç°ÁúÀ» Á¦°øÇÒ ¼ö ÀÖÀ½À» º¸¿´´Ù. |
¿µ¹®³»¿ë (English Abstract) |
In this paper, in order that the various QoS(Quality of Service)s that are required by different traffic class are guaranteed in the random access channels in multi-service multi-user OFDMA systems, the backoff-based random access algorithm is proposed and corresponding performance is analyzed in terms of the access success probability, the throughput, the average delay and the blocking probability. Through the numerical analysis, it is shown that the proposed backoff-based random access algorithm can provide the differentiated QoSs to random access attempts according to their service class. |
Å°¿öµå(Keyword) |
OFDMA
back-off based random access
Quality of Service (QoS)
|
ÆÄÀÏ÷ºÎ |
PDF ´Ù¿î·Îµå
|