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ÇѱÛÁ¦¸ñ(Korean Title) |
´ÙÁß ¿ì¼±¼øÀ§Ã¼Á¦ DQDB ºÐ»êÅ¥ ÇÁ·ÎÅäÄÝ¿¡¼ÀÇ °øÆòÇÑ Àü¼Û¿ë·® ºÐÇÒ |
¿µ¹®Á¦¸ñ(English Title) |
Fair Bandwidth Sharing in Multiple Priority DQ Protocol of DQDB |
ÀúÀÚ(Author) |
Á¤µ¿±Ù
ÃÖÁ¾È£
Àüȼ÷
Dong Geun Jeong
Chong-Ho Choi
Wha Sook Jeon
|
¿ø¹®¼ö·Ïó(Citation) |
VOL 18 NO. 06 PP. 0575 ~ 0585 (1991. 11) |
Çѱ۳»¿ë (Korean Abstract) |
ÀÌ ³í¹®¿¡¼´Â ºÐ»êÅ¥(DQ) ÇÁ·ÎÅäÄÝÀ» À§ÇÑ °øÆòÇÑ Àü¼Û¿ë·® ÇÒ´ç(fair bandwidth allocation) ±â¹ýÀ» Á¦¾ÈÇÑ´Ù. ¸ÕÀú, ´ÙÁß ¿ì¼±¼øÀ§·Î µ¿ÀÛÇÏ´Â ¿©·¯ È°¼º³ëµå °£ÀÇ ¹ö½º Àü¼Û¿ë·® ºÐÇÒ¿¡ ÀÖ¾î¼ÀÇ °øÆò¼º(fairness)À» °¢ ³ëµåÀÇ °¢ ¿ì¼±¼øÀ§ Æ®·¡ÇÈ¿¡ ÇÒ´çµÇ´Â Àü¼Û¿ë·® °üÁ¡¿¡¼ Á¤ÀÇÇÑ´Ù. ÀÌ Á¤ÀÇ¿¡ µû¸¦ ¶§ °øÆòÇÑ Àü¼Û¿ë·® ºÐÇÒÀ» º¸ÀåÇÏ´Â ÀûÀÀ Àü¼Û¿ë·® ³¶ºñÀ²(ABWR: Adaptive Bandwidth Waste Rate) ±â¹ýÀ» Á¦¾ÈÇÑ´Ù. ABWR ±â¹ýÀº ¸Á Àüü¿¡¼ ¹ß»ýµÇ´Â ¿ì¼±¼øÀ§°¡ jº¸´Ù ³ôÀº Æ®·¡ÇÈÀÇ Àü¼Û¿ë·® ¼ö¿ä¿¡ µû¶ó °¢ ³ëµåÀÇ ¿ì¼±¼øÀ§ j¿¡ ´ëÇÑ Àü¼Û¿ë·® ³¶ºñÀ²À» Á¶Á¤ÇÏ´Â °ÍÀÌ´Ù. DQ ÇÁ·ÎÅäÄÝ¿¡ ABWR ±â¹ýÀ» ºÎ°¡ÇÏ¿© »ç¿ëÇϸé, ¸Á Àüü¿¡¼ º¸¾Æ ¾à°£ÀÇ Àü¼Û¿ë·®À» ³¶ºñÇÏ´Â ´ë½Å ´ÙÁß ¿ì¼±¼øÀ§·Î µ¿ÀÛÇÏ´Â ¸ðµç È°¼º³ëµåµé °£ÀÇ °øÆòÇÑ Àü¼Û¿ë·® ºÐÇÒÀ» º¸Àå¹Þ°Ô µÈ´Ù. ¶Ç ÀÌ ³í¹®¿¡¼´Â ABWR ±â¹ýÀ» »ç¿ëÇÑ DQ ÇÁ·ÎÅäÄÝÀÇ ÃÖ´ë ¸Á ÀÌ¿ë·üÀÇ ÇÏÇÑÀ» °è»êÇÑ´Ù. ÇÑÆí Á¦¾ÈµÈ ±â¹ýÀÇ ¼º´ÉÀ» ½Ã¹Ä·¹À̼ÇÀ» ÅëÇØ Æò°¡ÇÑ´Ù. |
¿µ¹®³»¿ë (English Abstract) |
In this paper, we propose a fair bandwidth sharing technique for DQ protocol. The fairness on bandwidth sharing among nodes with multiple priority classes is defined in terms of bandwidth allocated to each node. A fully distributed adaptive bandwidth waste rate(ABWR) technique, which assures fair bandwidth sharing by the above definition, is proposed. ABWR technique adjusts the bandwidth waste rate for priority level j at each node, depending on network-wide bandwidth demand by traffics with priority higher than j. In this DQ protocol with ABWR, only a small portion of network bandwidth is wasted in accomplishing fair bandwidth sharing among all active nodes with multiple priority classes. A lower bound of maximum network utilization in the DQ protocol with ABWR, is given by numerical analysis. And the performance of the proposed technique is evaluated by simulation. |
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