ÇѱÛÁ¦¸ñ(Korean Title) |
MQTT¿¡¼ µ¿½Ã´Ù¹ßÀû ¸Þ½ÃÁö Àü¼Û¿¡ µû¸¥ ½Å·Ú¼º ºÐ¼® |
¿µ¹®Á¦¸ñ(English Title) |
Reliability Analysis According to Concurrent Message Transmission in MQTT |
ÀúÀÚ(Author) |
Á¶°æ¿ì
¿ÀâÇå
Kyoung-Woo Cho
Chang-heon Oh
±è¼ºÁø
Á¶°æ¿ì
¿ÀâÇå
Sung-jin Kim
Kyoung-woo Cho
Chang-heon Oh
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¿ø¹®¼ö·Ïó(Citation) |
VOL 21 NO. 02 PP. 0533 ~ 0535 (2017. 10) |
Çѱ۳»¿ë (Korean Abstract) |
MQTT´Â TCP/IP °èÃþ À§¿¡¼ 3°¡ÁöÀÇ QoS levelÀ» Á¦°øÇÏ¿© ¸Þ½ÃÁö Àü´ÞÀÇ ½Å·Ú¼ºÀ» º¸ÀåÇÑ´Ù. ÇÏÁö¸¸, ³ëµå¿¡¼ µ¿½Ã´Ù¹ßÀûÀ¸·Î ¸Þ½ÃÁö°¡ ¼Û¼ö½ÅµÇ´Â ȯ°æÀÇ °æ¿ì QoS level¿¡ ´ëÇÑ Àü´Þ ¹æ½ÄÀ¸·Î ÀÎÇØ ¸Þ½ÃÁö ¼Õ½ÇÀÌ ¹ß»ýÇÒ ¼ö ÀÖ´Ù. º» ³í¹®¿¡¼´Â MQTT¿¡¼ µ¿½Ã´Ù¹ßÀûÀ¸·Î ¸Þ½ÃÁö°¡ ¼Û¼ö½ÅµÇ´Â ½ÇÇè ȯ°æÀ» ±¸ÃàÇÏ¿© QoS level º¯È¿¡ µû¸¥ ¸Þ½ÃÁö ½Å·Ú¼ºÀ» È®ÀÎÇÑ´Ù. À̸¦ À§ÇØ publisher ¼ö¿Í ¸Þ½ÃÁöÀÇ Àü¼Û Áֱ⸦ º¯È½ÃÄÑ subscriber Ãø¸é¿¡¼ ¸Þ½ÃÁö ¼ö½ÅÀ²À» ºÐ¼®ÇÑ´Ù. ½ÇÇè °á°ú publisher ÀÇ ¼ö°¡ Áõ°¡Çϰųª ¸Þ½ÃÁöÀÇ Àü¼Û ÁֱⰡ ºü¸¦¼ö·Ï QoS level 0À» Á¦¿ÜÇÑ 1, 2ÀÇ ¸Þ½ÃÁö ¼ö½ÅÀ²ÀÌ °¨¼ÒµÊÀ» È®ÀÎÇÏ¿´´Ù.
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¿µ¹®³»¿ë (English Abstract) |
MQTT provides three QoS levels on top of the TCP/IP layer to ensure message delivery reliability. However, in an environment where messages are concurrently transmitted and received in a node, messages are lost due to the delivery method for QoS level. In this paper, it construct an experimental environment in which MQTT generates concurrently messages, and confirm the message reliability according to QoS level. Therefore, we analyze the message reception ratio on the subscriber side by changing number of publisher and transmission cycle of message. Experimental results show that the message reception ratio of 1 and 2 except QoS level 0 decreases as the number of publisher increases or the message transmission cycle increases.
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Å°¿öµå(Keyword) |
Internet of Things
oneM2M domain
Region Network
Region Gateway
Data Transmission
MQTT(Message Queue Telemetry Transport)
Message Reception Ratio
Publish/Subscribe
QoS(Quality of Service) Level
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