Á¤º¸°úÇÐȸ³í¹®Áö (Journal of KIISE)
Current Result Document :
ÇѱÛÁ¦¸ñ(Korean Title) |
Â÷µîÀûÀÎ IoT ¼ºñ½º¸¦ Á¦°øÇϱâ À§ÇÑ ¿ì¼±¼øÀ§ ±â¹ÝÀÇ Multi-level MQTT ½Ã½ºÅÛ |
¿µ¹®Á¦¸ñ(English Title) |
Priority-based Multi-level MQTT System to Provide Differentiated IoT Services |
ÀúÀÚ(Author) |
±è°Ç¿ì
¹ÚÁö¿ì
Á¤±¤¼ö
Geonwoo Kim
Jiwoo Park
Kwangsue Chung
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¿ø¹®¼ö·Ïó(Citation) |
VOL 45 NO. 09 PP. 0969 ~ 0974 (2018. 09) |
Çѱ۳»¿ë (Korean Abstract) |
MQTT (Message Queue Telemetry Transport)´Â ´ëÇ¥ÀûÀÎ °æ·® ÇÁ·ÎÅäÄݷνá Publish/Subscribe ¹æ½ÄÀ» »ç¿ëÇÏ¿© ¸Þ½ÃÁö¸¦ Àü¼ÛÇϸç 3´Ü°èÀÇ QoS (Quality of Service) ·¹º§À» Á¦°øÇÔÀ¸·Î½á ¹Ýµå½Ã Àü¼ÛµÇ¾î¾ß ÇÏ´Â ¸Þ½ÃÁö¿¡ ´ëÇÑ ½Å·Ú¼º ÀÖ´Â Àü¼ÛÀ» º¸ÀåÇÑ´Ù. ±×·¯³ª MQTT´Â ¿ì¼±¼øÀ§ 󸮸¦ Áö¿øÇÏÁö ¾Ê±â ¶§¹®¿¡ ÀÀ±Þ ÀÇ·á¼¾ÅÍ¿Í °°ÀÌ ½Å¼ÓÇÑ Ã³¸®¸¦ ¿ä±¸Çϴ ȯ°æ¿¡¼ Â÷µî ¼ºñ½º¸¦ Á¦°øÇÏÁö ¸øÇÏ´Â ¹®Á¦°¡ ÀÖ´Ù. º» ³í¹®¿¡¼´Â MQTT ¸Þ½ÃÁöÀÇ °íÁ¤ Çì´õ¿¡ ¿ì¼±¼øÀ§ Ç÷¡±×¸¦ Ãß°¡ÇÏ¿© ¿ì¼±¼øÀ§¿¡ µû¶ó ¸Þ½ÃÁö¸¦ ó¸®ÇÏ´Â ½Ã½ºÅÛÀ» Á¦¾ÈÇÑ´Ù. Á¦¾ÈÇÏ´Â ½Ã½ºÅÛÀº Multi-level Å¥¸¦ »ç¿ëÇÏ¿© ¿ì¼±¼øÀ§¿¡ µû¸¥ Â÷µî ¼ºñ½º¸¦ Á¦°øÇϸç ÃÖ¼ÒÇÑÀÇ ¸Þ½ÃÁö 󸮷®À» º¸ÀåÇÑ´Ù. ½ÇÇèÀ» ÅëÇØ ¸¹Àº ¸Þ½ÃÁö°¡ Àü¼ÛµÇ¾î Áö¿¬ÀÌ ¹ß»ýÇϴ ȯ°æ¿¡¼ Á¦¾È ½Ã½ºÅÛÀÌ ¿ì¼±¼øÀ§¿¡ µû¸¥ Á¾´Ü °£ Áö¿¬½Ã°£ÀÌ °¨¼ÒÇϸç ÃÖ¼ÒÇÑÀÇ ¸Þ½ÃÁö 󸮷®À» º¸ÀåÇÏ´Â °ÍÀ» È®ÀÎÇÏ¿´´Ù.
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¿µ¹®³»¿ë (English Abstract) |
MQTT (Message Queue Telemetry Transport) is a typical lightweight protocol that uses the Publish/Subscribe method to send messages. It also provides three levels of QoS (Quality of Service) to ensure reliable delivery of messages. However, since MQTT does not support priority processing, it cannot provide a differentiated service in an environment requiring rapid processing, such as an emergency medical center. In this paper, we propose a system that processes messages according to priority by adding priority flags to fixed headers of MQTT messages. The proposed system uses multi-level queues to provide priority-based differentiated services and guarantees minimal message throughput. Through experiments, we have confirmed that the proposed system reduces the end-to-end delay according to the priorities and ensures minimum message throughput in simulated environments where many messages are transmitted and delay occurs.
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Å°¿öµå(Keyword) |
MQTT
QoS
¿ì¼±¼øÀ§ ó¸®
Multi-level ť
¸Þ½ÃÁö 󸮷®
MQTT
QoS
priority processing
multi-level queue
message throughput
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