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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸°úÇÐȸ ³í¹®Áö > Á¤º¸°úÇÐȸ ³í¹®Áö I : Á¤º¸Åë½Å

Á¤º¸°úÇÐȸ ³í¹®Áö I : Á¤º¸Åë½Å

Current Result Document : 5 / 6

ÇѱÛÁ¦¸ñ(Korean Title) SVC ºñµð¿À ½ºÆ®¸®¹ÖÀ» À§ÇÑ º¹ÇÕÇü Àü¼Û ¿À·ù Á¦¾î ±â¹ý
¿µ¹®Á¦¸ñ(English Title) A Hybrid Scheme of the Transport Error Control for SVC Video Streaming
ÀúÀÚ(Author) ¼­±¤´ö   ¹®Ã¶¿í   Á¤¼øÈï   ±èÁø¼ö   Kwangdeok Seo   Chulwook Moon   Soonheung Jung   Jinsoo Kim  
¿ø¹®¼ö·Ïó(Citation) VOL 36 NO. 01 PP. 0034 ~ 0042 (2009. 02)
Çѱ۳»¿ë
(Korean Abstract)
º» ³í¹®¿¡¼­´Â ÆÐŶ ¿À·ù°¡ ºó¹øÇÑ IP¸ÁÀ» ÅëÇØ SVC ±â¹ÝÀÇ ºñµð¿À ½ºÆ®¸®¹Ö ¼­ºñ½º¸¦ Á¦°øÇϱâ À§ÇÑ ½Ç¿ëÀûÀÎ º¹ÇÕÇü Àü¼Û ¿À·ù Á¦¾î ±â¹ýÀ» Á¦¾ÈÇÑ´Ù. ±âÁ¸¿¡ ÀÌ¹Ì ´Ù¾çÇÑ ºÎȣȭ Ç¥ÁØÀ» ´ë»óÀ¸·ÎÇÑ Àü¼Û ¿À·ù Á¦¾î ±â¹ýµéÀÌ ³í¹®°ú ¹®ÇåÀ» ÅëÇØ ¸¹ÀÌ ¹ßÇ¥°¡ µÇ¾úÀ¸³ª, H.264/AVCÀÇ È®ÀåÇü ºÎȣȭ ±â¼úÀÎ SVC¿Í °°Àº ´ÙÁß °èÃþ ºÎȣȭ ±¸Á¶¿¡ ÀûÇÕÇÑ ¿À·ù Á¦¾î ±â¹ý¿¡ °üÇÑ ¿¬±¸°á°ú´Â ¸Å¿ì ºÎÁ·ÇÑ ½ÇÁ¤ÀÌ´Ù. º» ³í¹®¿¡¼­´Â SVCÀÇ °èÃþ ºÎȣȭ ±¸Á¶¸¦ °í·ÁÇÏ¿© °èÃþÇü FEC(layered FEC)¿Í ARQ¸¦ ¿À·ù °­ÀÎ ±â¹ýÀ¸·Î Àû¿ëÇÏ¸ç º¸´Ù È¿°úÀûÀÎ ¿À·ù °­ÀÎ ¼º´ÉÀ» È®º¸Çϱâ À§ÇÏ¿© ÀÌµé ±â¹ýÀ» º¹ÇÕÀûÀÎ ÇüÅ·Πµ¿ÀÛ½Ãų ¼ö ÀÖ´Â º¹ÇÕÇü ¿À·ù Á¦¾î ±â¹ý¿¡ ´ëÇØ Á¦¾ÈÇÑ´Ù. Á¦¾ÈµÈ º¹ÇÕÇü ±â¹ý¿¡¼­´Â ARQÀÇ NACK (Negative Acknowledgement) ¸Þ¼¼Áö ±â¹ÝÀÇ ±âÁ¸ ¹æ¹ý°ú´Â ´Þ¸® ACK(Acknowledgement) ¸Þ¼¼Áö¸¦ È°¿ëÇÔÀ¸·Î½á º¹ÇÕÇü ¿À·ù Á¦¾î ±â¹ý Àû¿ë¿¡ ÀÇÇÑ È¿À²(throughput)À» Çâ»ó½ÃŲ´Ù. Á¦¾ÈµÈ º¹ÇÕÇü ¿À·ù °­ÀÎ Àü¼Û ¹× Á¦¾î ±â¹ýÀÇ ¼º´ÉÀ» °ËÁõÇϱâ À§ÇÏ¿© ÆÐŶ ¼Õ½Ç ³×Æ®¿öÅ© ȯ°æÀ» NIST-Net ¿¡¹Ä·¹ÀÌÅ͸¦ È°¿ëÇÏ¿© ±¸ÃàÇϸç, ½ÇÇè °á°ú¸¦ ÅëÇØ Á¦¾ÈµÈ Àü¼Û ¿À·ù Á¦¾î ±â¹ýÀÇ ¼º´ÉÀÌ ¿ì¼öÇÔÀ» °ËÁõÇÑ´Ù.
¿µ¹®³»¿ë
(English Abstract)
In this paper, we propose a practical hybrid transport error control scheme to provide SVC video streaming service over error-prone IP networks. Many error control mechanisms for various video coding standards have been proposed in the literature. However, there is little research result which can be practically applicable to the multilayered coding structure of SVC(the scalable extension of H.264/AVC). We present a new hybrid transport error control scheme that efficiently combines layered Forward Error Correction(FEC) and Automatic Repeat Request(ARQ) for better packet-loss resilience. In the proposed hybrid error control, we adopt ACK-based ARQ instead of NACK-based ARQ to maximize throughput which is the amount of effective data packets delivered over a physical link per time unit. In order to prove the effectiveness of the proposed hybrid error control scheme, we adopt NIST-Net network emulator which is a general-purpose tool for emulating performance dynamics in IP networks. It is shown by simulations over the NIST-Net that the proposed hybrid error control scheme shows improved packet-loss resilience even with much less number of overhead packets compared to various conventional error control schemes.
Å°¿öµå(Keyword) Àü¼Û ¿À·ùÁ¦¾î   transport error control   ARQ   ARQ   FEC   FEC   SVC   SVC   ºñµð¿À Àü¼Û   video transport  
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