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Ȩ Ȩ > ¿¬±¸¹®Çå > Çмú´ëȸ ÇÁ·Î½Ãµù > Çѱ¹Á¤º¸Åë½ÅÇÐȸ Çмú´ëȸ > 2019³â Ãá°èÇмú´ëȸ

2019³â Ãá°èÇмú´ëȸ

Current Result Document :

ÇѱÛÁ¦¸ñ(Korean Title) NLOS ȯ°æ¿¡¼­ LPWA Åë½Å Ä¿¹ö¸®Áö ÃøÁ¤
¿µ¹®Á¦¸ñ(English Title) Measurement of LPWA communication coverage in NLOS environment
ÀúÀÚ(Author) ±ÇÇõ   Áø°æº¹   ¿ÀâÇå   Hyuk Kwon   Kyoung-Bog Jin   Chang-Heon Oh  
¿ø¹®¼ö·Ïó(Citation) VOL 23 NO. 01 PP. 0591 ~ 0593 (2019. 05)
Çѱ۳»¿ë
(Korean Abstract)
LPWA´Â Çѹø¿¡ Àü¼ÛÇÒ ¼ö ÀÖ´Â µ¥ÀÌÅ;çÀº ÀûÁö¸¸ ¸Å¿ì ³ÐÀº ¹üÀ§ÀÇ Á¤º¸¸¦ ¼öÁýÇÒ ¼ö ÀÖ¾î ¾ÆÆÄÆ® °è·®±âÀÇ Á¤º¸¸¦ ¼öÁýÇϰųª, »ê¾÷ÇöÀå¿¡¼­ °£ÇæÀûÀ¸·Î º¸³»´Â µ¥ÀÌÅÍ µîÀ» ¼öÁýÇϴµ¥ ÀûÇÕÇÏ´Ù. ÇÏÁö¸¸ LPWA¿¡ ´ëÇÑ ´ëºÎºÐÀÇ ÀÀ¿ë ¿¬±¸´Â ½Ç¿Ü, ƯÈ÷ LOS(line of sight) ȯ°æ¿¡ ´ëÇØ ÇÑÁ¤µÇ¾î ÀÖ¾î ¾ÆÆÄÆ® ¹× »ê¾÷ÇöÀå¿¡ Àû¿ëÇϱâ À§ÇÑ Á¤º¸¸¦ ¼öÁýÇÒ °æ¿ì Èûµç ¹®Á¦°¡ ¹ß»ýÇÑ´Ù. º» ³í¹®¿¡¼­´Â LPWA Åë½ÅÀÌ ¾ÆÆÄÆ® ¹× »ê¾÷ÇöÀå¿¡ Àû¿ëµÉ ¼ö ÀÖµµ·Ï NLOS(non line of sight) ȯ°æÀÎ °Ç¹° ³»ºÎ¿¡¼­ Åë½Å Ä¿¹ö¸®Áö¸¦ ÃøÁ¤ÇÏ¿´´Ù. ½ÇÇèÀ» À§ÇØ sx1276 µð¹ÙÀ̽º¸¦ ÀÌ¿ëÇØ LoRa ¸ðµâÀ» Á¦ÀÛÇÏ°í Class A¸¦ Àû¿ëÇÑ ÈÄ È®»êÀÎÀÚ 7°ú 12¿¡ ´ëÇؼ­ °¢ Ãþ¸¶´Ù µ¥ÀÌÅ͸¦ ¼öÁýÇÏ¿´´Ù. ½ÇÇè°á°ú, È®»êÀÎÀÚ°¡ ³·Àº 7ÀÇ °æ¿ì 7Ãþ¿¡¼­ºÎÅÍ ¼ö½ÅµÇ´Â µ¥ÀÌÅÍÀÇ ¿¡·¯¿Í Loss°¡ Áõ°¡ÇÏ´Â °ÍÀ» È®ÀÎÇÒ ¼ö ÀÖ¾úÀ¸¸ç È®»êÀÎÀÚ°¡ ³ôÀº 12´Â 9Ãþ±îÁöµµ Loss ¾øÀÌ µ¥ÀÌÅÍ°¡ ¼ö½ÅµÇ´Â °ÍÀ» È®ÀÎÇÒ ¼ö ÀÖ¾ú´Ù.
¿µ¹®³»¿ë
(English Abstract)
LPWA has a small amount of data that can be transmitted at one time, but it can collect a very wide range of information, so it is suitable for gathering information of apartment meter or collecting data intermittently sent from industrial site. However, most of the application studies on LPWA are limited to outdoor, especially LOS environment, so it is difficult to collect information for application to apartment and industrial sites. In this paper, we have measured the communication coverage within the building, which is a NLOS environment, so that LPWA communication can be applied to apartments and industrial sites. For the experiment, LoRa module was created using sx1276, Class A was applied, and the spread factor was changed for each layer. As a result, in case of spreading factor 7 that shows increasing error and losses from the 7 floor, but the in case of spreading factor 12, the data could be seamlessly received even on the 9th floor without error and losses.
Å°¿öµå(Keyword) NLOS   LPWA   Communication maximum distance   IoT   Smart Factory  
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