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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)

Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)

Current Result Document : 2 / 3

ÇѱÛÁ¦¸ñ(Korean Title) DASH½Ã½ºÅÛÀ» À§ÇÑ À¯È¿ ´ë¿ªÆø ÃøÁ¤ ±â¹ý
¿µ¹®Á¦¸ñ(English Title) Effective Bandwidth Measurement for Dynamic Adaptive Streaming over HTTP
ÀúÀÚ(Author) ±èµ¿Çö   Á¤Á¾¹Î   ÇãÁØȯ   ±èÁ¾´ö   Dong Hyun Kim   Jong Min Jung   Jun Hwan Huh   Jong Deok Kim  
¿ø¹®¼ö·Ïó(Citation) VOL 21 NO. 01 PP. 0042 ~ 0052 (2017. 01)
Çѱ۳»¿ë
(Korean Abstract)
DASH´Â ³×Æ®¿öÅ© »óȲ¿¡ µû¶ó Ŭ¶óÀ̾ðÆ®°¡ ¼­¹ö¿¡°Ô ¸ÖƼ¹Ìµð¾î ÄÜÅÙÃ÷¸¦ ¿äûÇÏ°í À̸¦ ÀÌ¿ëÇÏ¿© ¸ÖƼ¹Ìµð¾î ÄÜÅÙÃ÷¸¦ Àü¼ÛÇÏ´Â ÀûÀÀÇü ½ºÆ®¸®¹Ö ±â¼úÀÌ´Ù. ÀÌ·¯ÇÑ ±¸Á¶¿¡¼­ ¸ÖƼ¹Ìµð¾î ÄÜÅÙÃ÷ »ç¿ëÀÚ¿¡°Ô ÃÖ¼±ÀÇ Ç°ÁúÀ» º¸ÀåÇϱâ À§Çؼ­´Â Á¤È®ÇÑ °¡¿ë ´ë¿ªÆø ÃøÁ¤ÀÌ ÇÊ¿äÇÏ´Ù. ±×·±µ¥ TCPÀÇ Àü¼Û Ư¼ºÀ» °í·ÁÇÏÁö ¾Ê´Â DASH´Â ÀÌÀü ¹Ìµð¾î ¼¼±×¸ÕÆ® Å©±â¿¡ µû¶ó ÃøÁ¤µÈ °¡¿ë ´ë¿ªÆøÀÌ ´Ù¸£°í ¶§¹®¿¡ »ç¿ëÀÚ¿¡°Ô QoE¸¦ º¸ÀåÇϱ⠾î·Æ´Ù. º» ³í¹®Àº TCP Slow start±¸°£À» °¡¿ë ´ë¿ªÆø ÃøÁ¤¿¡¼­ ¹èÁ¦ÇÏ¿© °¡¿ë´ë¿ªÆø ÃøÁ¤ ¿À·ù¸¦ ÁÙÀÌ´Â »õ·Î¿î dash´ë¿ªÆø ÃøÁ¤ ¹æ¹ýÀ» Á¦¾ÈÇÑ´Ù. Á¦¾È ¹æ¹ýÀº ÀÌÀü ¼¼±×¸ÕÆ® Å©±â¿¡ µû¶ó °¡¿ë ´ë¿ªÆø ÃøÁ¤ÀÇ °á°ú°¡ ´Þ¶óÁö´Â ¹®Á¦¸¦ ÇØ°áÇÒ ¼ö ÀÖ´Ù. ¿ì¸®°¡ Á¦¾ÈÇÏ´Â °¡¿ë ´ë¿ªÆø ÃøÁ¤ ¹æ¹ýÀ» ¿ÀÇ ¼Ò½º ±â¹Ý DASH½Ã½ºÅÛ¿¡¼­ ±¸ÇöÇÏ¿© ±âÁ¸ ´ë¿ªÆø ÃøÁ¤ ¹æ¹ý°ú ¼º´ÉÀ» ºñ±³ Æò°¡ÇÏ¿´´Ù. ¼º´É Æò°¡ °á°ú Á¦¾È ¹æ¹ýÀº ±âÁ¸ ´ë¿ªÆø ÃøÁ¤ ¹æ¹ý¿¡ ºñÇØ Á¤È®µµ°¡ 20% Çâ»óµÇ¾ú´Ù. ¶Ç Æò±Õ ¼¼±×¸ÕÆ® ¼­ºñ½º Ç°Áú, ¼¼±×¸ÕÆ® Ç°Áú º¯°æ Ƚ¼ö µîÀÇ Ãø¸é¿¡¼­ »ç¿ëÀÚ QoE°¡ °³¼±µÊÀ» È®ÀÎÇÏ¿´´Ù.
¿µ¹®³»¿ë
(English Abstract)
DASH (Dynamic Adaptive Streaming over HTTP) is an adaptive streaming technique that enables transmission of multimedia content when clients request the multimedia contents to server. In this system, to ensure the best quality of
the content to satisfy users, it is necessary to precisely measure the residual bandwidth. However, the measured residual bandwidth by the DASH, which is not considering the transmission features of TCP, varies by the size of previous media segment, which makes it hard to ensure QoE to users. In this paper, we excluded the TCP Slow start range from measurement of residual bandwidth and suggested the new DASH bandwidth measuring method to decrease the error. Then, we realized the method in DASH system based on open source, and compared the existing measuring method. The new method showed that the accuracy of result has increased by 20%. Also, it could improve the QoE of users in terms of service quality and number of changes of segment quality.

Å°¿öµå(Keyword) ¹æ¼Û½Ã½ºÅÛ   DASH   TCP slow start   ´ë¿ªÆø ÃøÁ¤   Broadcasting System   DASH   TCP slow start   Bandwidth Measurement  
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