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Current Result Document :
ÇѱÛÁ¦¸ñ(Korean Title) |
È¿À²ÀûÀÎ VOD ¼ºñ½º¸¦ À§ÇÑ RVOD¿Í NVOD°£ÀÇ Àüȯ ÇÁ·ÎÅäÄÝ |
¿µ¹®Á¦¸ñ(English Title) |
A Mode Switching Protocol between RVOD and NVOD for Efficient VOD Services |
ÀúÀÚ(Author) |
±è¸íÈÆ
¹ÚÈ£Çö
Myounghoon Kim
Hohyun Park
|
¿ø¹®¼ö·Ïó(Citation) |
VOL 15-A NO. 04 PP. 0227 ~ 0238 (2008. 08) |
Çѱ۳»¿ë (Korean Abstract) |
ÃÖ±Ù ±¤´ë¿ªÈ µÇ¾î°¡´Â ³×Æ®¿öÅ© ȯ°æ¿¡ ¹ß¸ÂÃç VODÀÇ ¼ö¿ä ¿ª½Ã ±ÞÁõÇÏ°í ÀÖ´Ù. ±âÁ¸ÀÇ VOD ¼ºñ½º´Â RVOD ¶Ç´Â NVOD Áß ÇÑ °¡Áö ¹æ½ÄÀ¸·Î¸¸ ¼ºñ½º°¡ °¡´ÉÇÏ¿´´Ù. ÀÌ·¸µí ÇÑ °¡Áö ¹æ½ÄÀ¸·Î¸¸ ¼ºñ½º¸¦ ÇÏ°Ô µÇ¸é ½Ã½Ã°¢°¢ º¯ÈÇϴ Ŭ¶óÀ̾ðÆ®ÀÇ ¼ö¿ä¿¡ ´ëÀÀÇÒ ¼ö ¾ø¾î¼ ¼¹ö¿¡ °úºÎÇÏ°¡ °É¸®°Å³ª, ¼¹öÀÇ ´ë¿ªÆøÀ» ³¶ºñÇÏ´Â °á°ú¸¦ ÃÊ·¡ÇÏ´Â µî ¼¹öÀÇ ³×Æ®¿öÅ© ÀÚ¿øÀ» È¿À²ÀûÀ¸·Î »ç¿ëÇÏÁö ¸øÇÏ¿´´Ù. ÀÌ¿¡ º» ³í¹®¿¡¼´Â È¿À²ÀûÀÎ VOD ¼ºñ½º¸¦ À§ÇÑ ÇÁ·ÎÅäÄÝ¿¡ °üÇÑ ¿¬±¸¸¦ ¼öÇàÇÏ¿´´Ù. ±âÁ¸ÀÇ VOD ¼ºñ½º ¾Ë°í¸®µëÀ» Àû¿ëÇÒ ¼ö ÀÖ´Â »õ·Î¿î ÇÁ·ÎÅäÄÝÀ» Á¦¾ÈÇÏ°í, ½Ã¹Ä·¹À̼ÇÀ» ÅëÇØ ¼º´ÉÀ» ºÐ¼®ÇÏ¿´À¸¸ç, »õ·Î¿î ÇÁ·ÎÅäÄÝÀ» Àû¿ë½ÃŲ ¼¹ö/Ŭ¶óÀ̾ðÆ® ±¸Á¶ÀÇ ½Ã½ºÅÛÀ» °³¹ßÇÏ¿´´Ù. º» ³í¹®¿¡¼´Â RVOD/NVOD ÅëÇÕ ¸ðµå Àüȯ ÇÁ·ÎÅäÄÝÀ» Á¦¾ÈÇÑ´Ù. Á¦¾ÈµÈ ÇÁ·ÎÅäÄÝÀº RVOD¿Í NVOD µÎ °¡Áö ¹æ½Ä ¸ðµÎ¸¦ Á¦¾îÇÒ ¼ö ÀÖ°í, µÎ ¹æ½Ä°£ÀÇ ¸ðµå ÀüȯÀ» ÇÒ ¼ö ÀÖ´Ù. ±×·¯¹Ç·Î º» ÇÁ·ÎÅäÄÝÀ» »ç¿ëÇÏ¿© Ŭ¶óÀ̾ðÆ®ÀÇ ¼ö¿ä º¯È¿¡ ¸ÂÃç ¸ðµå¸¦ ÀüȯÇÑ´Ù¸é ¼¹öÀÇ ´ë¿ªÆøÀ» È¿À²ÀûÀ¸·Î °ü¸®ÇÒ ¼ö ÀÖ´Ù. ƯÈ÷ ±âÁ¸ÀÇ RVOD ¹× NVOD ¿¬±¸ ¹æ½ÄµéÀ» Àû¿ëÇÒ ¼ö ÀÖ´Ù. ±×·¯¹Ç·Î º» ³í¹®¿¡¼ Á¦½ÃÇÑ ÇÁ·ÎÅäÄÝÀº ¾ÕÀ¸·ÎÀÇ VOD ½ÃÀå¿¡¼ È°¿ëµµ°¡ ¸Å¿ì ³ôÀ» °ÍÀ¸·Î ±â´ëµÈ´Ù. |
¿µ¹®³»¿ë (English Abstract) |
Recently, as network environment has broadened, the demands on VOD have been increased. The VOD services can be categorized into two types, RVOD and NVOD. Practical VOD services adopt one of them exclusively. Since a method using only one of RVOD and NVOD is not able to deal with frequently variable demand of clients, it leads to a result of overload on a server and a waste of server bandwidth. The efficiency of the network resource usage becomes lower. Hence this paper presents a study on the protocol for efficient VOD services. We propose a new protocol appliable for the existing VOD service algorithm, analyze its performance through simulation, and developed server/client systems applying the new protocol. We propose a mode switching protocol combined with protocols used in RVOD and NVOD. The proposed protocol is not able only to control both RVOD and NVOD but also to change the mode between RVOD and NVOD. As a result of using the proposed protocol to meet frequently variable demand, server bandwidth can be used efficiently. Especially, it can be applied to the existing VOD service algorithms. Therefore, we expect that the proposed protocol in this paper will be widely used in emerging VOD markets. |
Å°¿öµå(Keyword) |
RVOD
NVOD
¸ðµåÀüȯ
ÇÁ·ÎÅäÄÝ
RVOD
NVOD
Mode Switching
Protocol
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ÆÄÀÏ÷ºÎ |
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