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http://dx.doi.org/10.6109/jkiice.2017.21.7.1320

Method for Message Processing According to Priority in MQTT Broker  

Kim, Sung-jin (Department of Electrical, Electronics & Communication Engineering, Korea University of Technology and Education(KOREATECH))
Oh, Chang-heon (Department of Electrical, Electronics & Communication Engineering, Korea University of Technology and Education(KOREATECH))
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.21, no.7, 2017 , pp. 1320-1326 More about this Journal
Abstract
Recently, IoT has been studying a lightweight protocol to satisfy device communication in a limited network environment. MQTT is a typical lightweight protocol. It supports small fixed headers to minimize overhead, and adopts publish/subscribe structure to guarantee real-time performance. However, MQTT does not support prioritization of important data and can not provide QoS in a specific IoT service. In this paper, we propose a message processing method to consider the priority of various IoT services in MQTT. In the proposed method, the priority flag is added to the fixed header of the MQTT in the node to transmit the message, and the broker confirms the priority of the corresponding message and processes it preferentially. Through experiment and evaluation, we confirmed the reduction of end-to-end delay between nodes according to priority.
Keywords
IoT; MQTT; broker; priority; QoS;
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Times Cited By KSCI : 4  (Citation Analysis)
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