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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸°úÇÐȸ ³í¹®Áö > Á¤º¸°úÇÐȸ³í¹®Áö (Journal of KIISE)

Á¤º¸°úÇÐȸ³í¹®Áö (Journal of KIISE)

Current Result Document : 4 / 14 ÀÌÀü°Ç ÀÌÀü°Ç   ´ÙÀ½°Ç ´ÙÀ½°Ç

ÇѱÛÁ¦¸ñ(Korean Title) ¹«¼± ³×Æ®¿öÅ©¿¡¼­ µ¿±âÈ­ ¿µ»ó Àç»ýÀ» À§ÇÑ RANSAC ±â¹Ý ½Ã°£µ¿±âÈ­ ¹æ¹ý
¿µ¹®Á¦¸ñ(English Title) RANSAC-based Time Synchronization over Wireless Networks
ÀúÀÚ(Author) ȲÁØ¿±   À§´ëÇö   ÀÌÁ¤Áø   Junyoup Hwang   Daehyeon Wi   Jungjin Lee  
¿ø¹®¼ö·Ïó(Citation) VOL 45 NO. 07 PP. 0626 ~ 0634 (2018. 07)
Çѱ۳»¿ë
(Korean Abstract)
º» ³í¹®Àº SNTP(Simple Network Time Protocol) ÆÐŶÀ» ÅëÇØ ¾òÀº ½Ã°£ Á¤º¸¿¡ RANSAC(Random Sample Consensus) ¾Ë°í¸®ÁòÀ» Àû¿ëÇÏ¿© ¹«¼± ³×Æ®¿öÅ© ȯ°æ¿¡¼­ÀÇ µ¿±âÈ­ ¿µ»ó Àç»ýÀ» À§ÇÑ ¼¼¹ÐÇÑ ½Ã°£µ¿±âÈ­ ¹æ¹ýÀ» Á¦¾ÈÇÑ´Ù. ºü¸¥ ½Ã°£ ³»¿¡ ³ôÀº ½Ã°£Á¤È®µµ¸¦ ¾ÈÁ¤ÀûÀ¸·Î È®º¸ÇÏ´Â °ÍÀÌ ÇʼöÀÎ µ¿±âÈ­ ¿µ»óÀç»ý ¸ðµâ¿¡¼­ NTP(Network Time Protocol)´Â ±¸ÇöÀÌ º¹ÀâÇϰí Á¤¹ÐÇÑ µ¿±âÈ­¿¡ ¿À·£ ½Ã°£ÀÌ °É¸°´Ù´Â ´ÜÁ¡ÀÌ ÀÖ´Ù. SNTPÀÇ °æ¿ì¿¡´Â ±¸ÇöÀÌ °£´ÜÇÏÁö¸¸ ºÒ¾ÈÁ¤ÇÑ ¹«¼± ³×Æ®¿öÅ©ÀÇ Æ¯Â¡À¸·Î ½Ã°£À» Á¤¹ÐÇÏ°Ô ¸ÂÃß´Â °ÍÀÌ ºÒ°¡´ÉÇß´Ù. º» ³í¹®¿¡¼­´Â SNTP¿¡¼­ ¾ò¾îÁø ½Ã°£ Á¤º¸µéÀ» RANSACÀ» ÅëÇØ Á¤Á¦ÇÏ¿´°í, ÀÌ °á°ú µ¿±âÈ­ ½ÃÀÛ ÈÄ ¾à 5ÃÊ À̳»¿¡ 5ms¹Ì¸¸ÀÇ ½Ã°£Á¤È®µµ¸¦ ¾ÈÁ¤ÀûÀ¸·Î À¯ÁöÇÒ ¼ö ÀÖ¾ú´Ù. Á¦¾ÈµÈ ¹æ¹ýÀº °£´ÜÇÑ ±¸ÇöÀ¸·Î °íǰÁúÀÇ ½Ã°£ µ¿±âÈ­ ¼º´ÉÀ» ¾òÀ» ¼ö À־ Â÷ÈÄ IoT µîÀÇ ºÐ¾ß¿¡¼­ Ȱ¿ë°¡Ä¡°¡ ³ôÀ» °ÍÀÌ´Ù.
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(English Abstract)
This paper describes a method to improve the quality of time synchronization for synchronous video streaming over a wireless network using a Simple Network Time Protocol (SNTP) with the RANdom SAmple Consensus (RANSAC) Algorithm. Time synchronization is mostly accomplished by using the NTP server. Speed and accuracy are important in synchronizing the video play module; however, NTP is limited because too much time is spent to operate the module. It also requires a complex structure and algorithms for customization. And SNTP, which is easy to implement, is also inappropriate for the wireless network because there is no filtering process for network failure. Our method refined those timestamps of SNTP using RANSAC, so that it achieves a stable synchronization, with 5 milliseconds of accuracy, which takes less than 5 seconds. This method enables high- quality time synchronization with a simple implementation for any kind of system, and will be useful for IoT devices.
Ű¿öµå(Keyword) NTP   SNTP   RANSAC   ¹«¼± ³×Æ®¿öÅ©   ½Ã°£µ¿±âÈ­   IoT   µ¿±âÈ­ ¿µ»ó Àç»ý   NTP   SNTP   RANSAC   wireless network   time synchronization   IoT   synchronized  
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