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Current Result Document :
ÇѱÛÁ¦¸ñ(Korean Title) |
Â÷¼¼´ë ±º ¸ð¹ÙÀÏ À§¼º ³×Æ®¿öÅ© QoS ¼º´É Çâ»óÀ» À§ÇÑ Àú±Ëµµ À§¼º ºöÆø ÀûÀÀÀû Á¦¾î ±â¹ý |
¿µ¹®Á¦¸ñ(English Title) |
Adaptive Beamwidth Control Technique for Low-orbit Satellites for QoS Performance improvement based on Next Generation Military Mobile Satellite Networks |
ÀúÀÚ(Author) |
Àå´ëÈñ
ȲÀ±ÇÏ
Á¤Á¾¹®
Dae-Hee Jang
Yoon-Ha Hwang
Jong-Moon Chung
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¿ø¹®¼ö·Ïó(Citation) |
VOL 21 NO. 06 PP. 0001 ~ 0012 (2020. 12) |
Çѱ۳»¿ë (Korean Abstract) |
Àú±Ëµµ À§¼ºÀ» È°¿ëÇÑ ¸ð¹ÙÀÏ À§¼º ³×Æ®¿öÅ©´Â ³·Àº Ãâ·ÂÀÇ ¼ÒÇüÈµÈ ´Ü¸»±â¸¦ ÅëÇØ ¼ºñ½º¸¦ Á¦°øÇÒ ¼ö ÀÖ¾î ±¹°¡ °ø°øÀ糸Á ¹× ±¹¹æºÐ¾ß µî ±â¹Ý Åë½Å¸ÁÀ» »ç¿ëÇϱ⠾î·Á¿î »óȲ¿¡¼ ½Å·Ú¼º ÀÖ´Â Åë½Å¼ö´ÜÀ¸·Î È°¿ëµÉ ¼ö ÀÖ´Ù. ±×·¯³ª ºñ»ó´ëºñ »óȲ¿¡¼ÀÇ High Traffic ȯ°æÀº À§¼º ³×Æ®¿öÅ©ÀÇ New call blocking È®·ü°ú Handover Failure È®·üÀ» ³ôÀ̸ç, Àú±Ëµµ À§¼ºÀº ¸Å¿ì ºü¸¥ ¼Óµµ·Î ±Ëµµ¸¦ À̵¿ÇϹǷΠHandover Failure È®·ü Áõ°¡´Â ¼ºñ½º Ç°Áú¿¡ Å« ¿µÇâÀ» ¹ÌÄ£´Ù. À§¼ºÅë½ÅÀÇ Ã¤³Î ÇÒ´ç¹æ½Ä Áß FCA ¹æ½ÄÀº DCA¿¡ ºñÇØ ³ôÀº Æ®·¡ÇÈ¿¡¼ »ó´ëÀûÀ¸·Î ¾çÈ£ÇÑ ¼º´ÉÀ» º¸¿© ºñ»ó´ëºñ »óȲ¿¡ ÀûÀýÇϳª Æ®·¡ÇÈ Áõ°¡ ½Ã QoS¸¦ ÃÖÀûÈÇϱâ À§ÇØ New call blocking È®·ü°ú Handover failure È®·üÀ» ÃÖ¼ÒÈÇØ¾ß ÇÑ´Ù. º» ³í¹®¿¡¼´Â FCA ¹æ½Ä Áß Handover Call¿¡ ¿ì¼±±ÇÀ» ºÎ¿©ÇÏ´Â FCA-QH¹æ½ÄÀ» ¿¹½Ã·Î ÇÏ¿© Àú±Ëµµ À§¼ºÀÇ ºöÆø°ú Å͹̳εéÀÇ ÅëȽð£À» ÀûÀÀÀûÀ¸·Î Á¶ÀýÇÏ¿© QoS¸¦ °³¼±ÇÏ´Â LEO-DBC(LEO satellite Dynamic Beam width Control) ±â¹ýÀ» Á¦¾ÈÇÑ´Ù. LEO-DBC ±â¹ýÀ» ÅëÇØ ºñ»ó´ëºñ »óȲÀÇ High traffic ȯ°æ¿¡¼ ¸ð¹ÙÀÏ À§¼ºÅë½Å ³×Æ®¿öÅ©ÀÇ QoS¸¦ ÃÖÀûÀ¸·Î À¯ÁöÇÒ ¼ö ÀÖÀ» °ÍÀ¸·Î ±â´ëÇÑ´Ù.
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¿µ¹®³»¿ë (English Abstract) |
Low-Orbit satellite mobile networks can provide services through miniaturized terminals with low transmission power, which can be used as reliable means of communication in the national public disaster network and defense sector. However, the high traffic environment in the emergency preparedness situation increases the new call blocking probability and the handover failure probability of the satellite network, and the increase of the handover failure probability affects the QoS because low orbit satellites move in orbit at a very high speed. Among the channel allocation methods of satellite communication, the FCA shows relatively better performance in a high traffic environment than DCA and is suitable for emergency preparedness situations, but in order to optimize QoS when traffic increases, the new call blocking and the handover failure must be minimized. In this paper, we propose LEO-DBC (LEO satellite dynamic beam width control) technique, which improves QoS by adaptive adjustment of beam width of low-orbit satellites and call time of terminals by improving FCA-QH method. Through the LEO-DBC technique, it is expected that the QoS of the mobile satellite communication network can be optimally maintained in high traffic environments in emergency preparedness situations.
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Å°¿öµå(Keyword) |
ºñ»ó´ëºñ
¹Ì·¡Àü
À§¼ºÅë½Å
Àú±Ëµµ À§¼º
Å¥À×
QoS
ºöÆø
Emergency Preparation
Future Warfare
Satellite Communication
LEO Satellite
Queuing
QoS
Beam width
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