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Current Result Document :
ÇѱÛÁ¦¸ñ(Korean Title) |
EPON¿¡¼ÀÇ È¿À²¼º Çâ»óÀ» À§ÇÑ °¡º¯ ÃÖ´ë Àü¼Û À©µµ¿ì¸¦ ÀÌ¿ëÇÑ IPS ±â¹ÝÀÇ µ¿Àû ´ë¿ªÆø ÇÒ´ç ¾Ë°í¸®Áò |
¿µ¹®Á¦¸ñ(English Title) |
IPS-based Dynamic Bandwidth Allocation Algorithm with Adaptive Maximum Transmission Window to Increase Channel Utilization in EPON |
ÀúÀÚ(Author) |
Á¶½Â¹«
¿À⿵
Á¤¹Î¿µ
ÃßÇö½Â
ÀÌÅÂÁø
Seung-Moo Cho
Chang-Yeong Oh
Min Young Chung
Hyunseung Choo
Tae-JIn Lee
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¿ø¹®¼ö·Ïó(Citation) |
VOL 16-C NO. 04 PP. 0477 ~ 0486 (2009. 08) |
Çѱ۳»¿ë (Korean Abstract) |
º» ³í¹®Àº EPON(Ether Passive Optical Network)¿¡¼ ä³Î »ç¿ë·üÀ» °³¼±Çϱâ À§ÇÑ ¹æ¾ÈÀ¸·Î °¡º¯ ÃÖ´ë Àü¼Û À©µµ¿ì¸¦ ÀÌ¿ëÇÑ µ¿Àû ´ë¿ªÆø ÇÒ´ç(DBA-AMTW: Dynamic Bandwidth Allocation with Adaptive Maximum Transmission Window) ¾Ë°í¸®ÁòÀ» Á¦¾ÈÇÑ´Ù. EPON¿¡¼ÀÇ Æú¸µ ±â¹ýÀº ä³Î »ç¿ë·üÀ» °áÁ¤ÇÏ°í DBA ¹× ½ºÄÉÁÙ¸µ ±â¹ýÀÇ »ç¿ë¿¡ ¿µÇâÀ» ¹ÌÄ£´Ù. IPS(Interleaved Polling with Stop)¿¡ ±â¹ÝÀ» µÐ DBA ¹æ½ÄÀº ÇÕ¸®ÀûÀÎ Àü¼Û À©µµ¿ì ÇÒ´çÀÌ °¡´ÉÇÑ ÀåÁ¡À» °®Áö¸¸, ä³Î ºñ»ç¿ë ±¸°£ÀÌ ¹ß»ýÇÏ¿© ä³Î »ç¿ë·üÀÌ ÀúÇϵǴ ´ÜÁ¡À» °¡Áø´Ù. Á¦¾ÈÇÏ´Â °¡º¯ ÃÖ´ë Àü¼Û À©µµ¿ì¸¦ ÀÌ¿ëÇÑ µ¿Àû ´ë¿ªÆø ÇÒ´ç ¾Ë°í¸®ÁòÀº ä³Î ºñ»ç¿ë ±¸°£À» È¿À²ÀûÀ¸·Î °¨¼Ò½ÃÅ°´Â µ¿½Ã¿¡ ¸ðµç ONUÀÇ REPORT ¸Þ½ÃÁö¸¦ °í·ÁÇÑ ÇÕ¸®ÀûÀΠä³ÎÇÒ´çÀÌ °¡´ÉÇÑ Æ¯Â¡À» °¡Áø´Ù. °¢ ONU´Â °³º°ÀûÀÎ ÃÖ´ë Àü¼Û À©µµ¿ìÀÇ Å©±â¸¦ °¡Áö°í ÀÌ·¯ÇÑ ÃÖ´ë Àü¼Û À©µµ¿ìÀÇ Å©±â´Â ÀÌÀü »çÀÌŬ¿¡¼ °áÁ¤µÈ´Ù. ½Ã¹Ä·¹À̼ÇÀ» ÅëÇØ Á¦¾ÈÇÏ´Â µ¿Àû ´ë¿ªÆø ÇÒ´ç ¹æ½ÄÀÌ ±âÁ¸ ¹æ½Ä¿¡ ºñÇØ Ã³¸®À²°ú Æò±Õ Áö¿¬ ½Ã°£¿¡ ´ëÇÑ ¼º´ÉÀ» Çâ»ó½ÃÅ´À» È®ÀÎÇÏ¿´´Ù. |
¿µ¹®³»¿ë (English Abstract) |
This paper proposes a dynamic bandwidth allocation (DBA) algorithm with adaptive maximum transmission window (DBA-AMTW) to increase channel utilization in Ethernet passive optical networks (EPONs). A polling mechanism in EPON determines channel utilization and puts constraints on DBA algorithm and scheduling. DBA algorithms based on interleaved polling with stop (IPS) allocate transmission windows to optical network units (ONU) considering requests of all ONUs. However channel idle time when any ONU does not transmit packets decreases channel utilization. Proposed DBA-AMTW improves efficiency of a network and allocates transmission windows effectively by appropriate DBA computation from REPORT messages of all ONUs. An adaptive maximum transmission window for each ONU determined by a DBA computation in the previous scheduling cycle. Simulation results show that the proposed DBA algorithm improves performance of throughput and average delay time. |
Å°¿öµå(Keyword) |
EPON
µ¿Àû ´ë¿ªÆø ÇÒ´ç
IPS
EPON
Dynamic Bandwidth Allocation
Interleaved Polling with Stop
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ÆÄÀÏ÷ºÎ |
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