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Current Result Document :
ÇѱÛÁ¦¸ñ(Korean Title) |
Â÷·® ³×Æ®¿öÅ©¿¡¼ ÃÖÀûÀÇ ÄÁÅÙÃ÷ ºÐ¹è ±â¹ÝÀÇ »çÀü ij½Ì ¹æ¾È |
¿µ¹®Á¦¸ñ(English Title) |
Proactive Caching Strategy Based on Optimal Content Distribution in Content Centric Vehicular Networks |
ÀúÀÚ(Author) |
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ÀÌÀǽÅ
Sungjin Park
Euisin Lee
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¿ø¹®¼ö·Ïó(Citation) |
VOL 09 NO. 06 PP. 0131 ~ 0136 (2020. 06) |
Çѱ۳»¿ë (Korean Abstract) |
Â÷·® ȯ°æÀÇ Åë½Å¿¡¼ ÄÜÅÙÃ÷ÀÇ »çÀü ij½ÌÀº »ç¿ëÀڷκÎÅÍ ÄÜÅÙÃ÷ ¼¹ö±îÁöÀÇ Áö¿¬½Ã°£À» °¨¼Ò½Ãų ¼ö ÀÖ´Ù. ÇÏÁö¸¸ ¾îµð¿¡, ¾î´À ·® ¸¸ÅÀÇ »çÀü ij½ÌÀ» ÇؾßÇÏ´Â Áö¿¡ ´ëÇÑ ¹®Á¦Á¡Àº ¾ÆÁ÷µµ ÇØ°áµÇÁö ¾Ê°í ÀÖ´Ù. º» ³í¹®¿¡¼´Â Â÷·®ÀÇ À̵¿ È®·üÀ» Åä´ë·Î Â÷·®ÀÌ ´ÙÀ½À¸·Î À̵¿ÇÏ°Ô µÉ ±âÁö±¹ Èĺ¸µé¿¡°Ô °¢°¢ ÃÖÀûÈµÈ ·®¸¸ÅÀÇ ÄÜÅÙÃ÷¸¦ ºÐ»ê½ÃÄÑ »çÀü ij½ÌÇÏ´Â ¹æ¾ÈÀ» Á¦½ÃÇÑ´Ù. ¿ì¼±, °¢ Â÷·®ÀÇ À̵¿ È®·üÀº Markov ChainÀ» ÀÌ¿ëÇÏ¿© ÇнÀµÇ¾ú´Ù. ±×¸®°í ºÐ»êÇÏ¿© »çÀü ij½ÌÇÒ ÄÜÅÙÃ÷ÀÇ ·®Àº ¹«¼± ȯ°æÀ» ±â¹ÝÀ¸·Î ÃÖÀûȵǾú´Ù. NS-3¸¦ ±â¹ÝÀ¸·Î ÁøÇàµÈ ½ÇÇè¿¡¼ Á¦¾È ¹æ¾ÈÀº ±âÁ¸ ¹æ¾È¿¡ ºñÇÏ¿© ÃÖ¼ÒÀÇ Áö¿¬½Ã°£À» À¯ÁöÇϸç Æ®·¡ÇÈÀ» °¡Àå ¸¹ÀÌ Àý¾àÇÑ °á°ú°¡ µµÃâµÇ¾ú´Ù.
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¿µ¹®³»¿ë (English Abstract) |
In vehicular communications environment, content pre-caching can reduce the delay time from the user to the content server. However, the problem of where and how much pre-caching is still not solved. In this paper, based on the movement probability of the vehicle, we propose a method for pre-caching by distributing the optimized amount of content to each base station candidate that the vehicle will move as follows. First, the movement probability of each vehicle was learned using Markov Model. And the amount of content to be distributed and pre-cached was optimized based on the wireless environment. In experiments based on NS-3, the proposed strategy maintained the least delay compared to the existing protocol, leading to the most traffic-saving results.
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Å°¿öµå(Keyword) |
VANETs
CCVN
RSU
Content Caching
Optimization
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