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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 :

ÇѱÛÁ¦¸ñ(Korean Title) ¼¿·ê¶ó IoT ³×Æ®¿öÅ©¸¦ À§ÇÑ ÆÄÀÏ·µ Áö¿ø ±âȸÀû Àü¼Û ±â¹Ý ÀÓÀÇ Á¢¼Ó ±â¹ý
¿µ¹®Á¦¸ñ(English Title) A Random Access based on Pilot-Assisted Opportunistic Transmission for Cellular IoT Networks
ÀúÀÚ(Author) ±èÅÂÈÆ   ä½ÂÈ£   Taehoon Kim   Seong Ho Chae  
¿ø¹®¼ö·Ïó(Citation) VOL 23 NO. 10 PP. 1254 ~ 1260 (2019. 10)
Çѱ۳»¿ë
(Korean Abstract)
ÃÖ±Ù 5¼¼´ë À̵¿Åë½Å ½Ã½ºÅÛÀº 4Â÷ »ê¾÷Çõ¸íÀÇ ÇÙ½É ¿ä¼Ò·Î Å« ÁÖ¸ñÀ» ¹Þ°í ÀÖ´Ù. º» ³í¹®¿¡¼­´Â, À̵¿Åë½Å ½Ã½ºÅÛ¿¡¼­ »ç¹°ÀÎÅÍ³Ý ½Ã³ª¸®¿À¸¦ Áö¿øÇϱâ À§ÇØ ÆÄÀÏ·µ Áö¿ø ±âȸÀû Àü¼Û ±â¹ÝÀÇ »õ·Î¿î ÀÓÀÇ Á¢¼Ó ±â¹ýÀ» Á¦¾ÈÇÑ´Ù. Á¦¾ÈÇÏ´Â ±â¹ýÀº ÀÓÀÇ Á¢¼Ó ÀýÂ÷ 3´Ü°è¿¡¼­ µ¥ÀÌÅÍ ÆÐŶÀ» Àü¼ÛÇÒ ¶§ ´Ù¼ö °³ÀÇ »óÇ⸵ũ ÀÚ¿ø Áß ÇϳªÀÇ ÀÚ¿øÀ» ÀÓÀÇ ·Î ¼±ÅÃÇÏ¿© ±âȸÀû Àü¼ÛÀ» ÇÏ´Â µ¿½Ã¿¡ µ¥ÀÌÅÍ º¹È£¸¦ À§ÇØ °¢ µ¥ÀÌÅÍ ÆÐŶ¿¡ ´ÙÁßÈ­ÇÏ´Â »óÇ⸵ũ ÆÄÀÏ·µ ½ÅÈ£ ¶Ç ÇÑ ÀÓÀÇ·Î ¼±ÅÃÇÏ°Ô ÇÔÀ¸·Î½á ÆÐŶ Ãæµ¹ È®·üÀ» ȹ±âÀûÀ¸·Î ³·Ãß´Â °ÍÀ» ÁÖ¿ä Ư¡À¸·Î ÇÑ´Ù. È®·ü ¸ðµ¨À» ÀÌ¿ëÇÏ¿© ÆÐŶ Ãæµ¹ È®·ü ¹× »óÇ⸵ũ ÀÚ¿ø È¿À² °üÁ¡¿¡¼­ Á¦¾ÈÇÑ ±â¹ýÀ» ¼öÇÐÀûÀ¸·Î ºÐ¼® ÇÏ°í, ¸ðÀǽÇÇèÀ» ÅëÇØ ºÐ¼®ÀÇ À¯È¿ ¼ºÀ» È®ÀÎÇÏ°í Á¦¾È ±â¹ýÀÇ ¿ì¼ö¼ºÀ» ÀÔÁõÇÑ´Ù.
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(English Abstract)
Recently, 5G cellular systems have been attracted great attention as a key enabler for Industry 4.0. In this paper, we propose a novel random access based on pilot-assisted opportunistic transmission to support internet-of-things (IoT) scenario in cellular networks. A key feature of our proposed scheme is to enable each of IoT devices to attempt opportunistic transmission of its data packet in Step 3 with randomly selected uplink pilot signal. Both the opportunistic transmission and the pilot randomization in Step 3 are effective to significantly mitigate the occurrence of packet collisions. We mathematically analyze our proposed scheme in terms of packet collision probability and uplink resource efficiency. Through simulations, we verify the validity of our analysis and evaluate the performance of our proposed scheme. Numerical results show that our proposed scheme outperforms other competitive schemes.
Å°¿öµå(Keyword) 5¼¼´ë À̵¿Åë½Å   »ç¹°ÀÎÅͳݠ  ÀÓÀÇ Á¢¼Ó   ÆÄÀÏ·µ Áö¿ø ±âȸÀû Àü¼Û   5G cellular networks   internet-of-things   random access   pilot-assisted opportunistic transm  
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