Paper Info
Title
DM-MQTT: An Efficient MQTT Based on SDN Multicast for Massive IoT Communications.
Abstract
Edge computing is proposed to solve the problem of centralized cloud computing caused by a large number of IoT (Internet of Things) devices. The IoT protocols need to be modified according to the edge computing paradigm, where the edge computing devices for analyzing IoT data are distributed to the edge networks. The MQTT (Message Queuing Telemetry Transport) protocol, as a data distribution protocol widely adopted in many international IoT standards, is suitable for cloud computing because it uses a centralized broker to effectively collect and transmit data. However, the standard MQTT may suffer from serious traffic congestion problem on the broker, causing long transfer delays if there are massive IoT devices connected to the broker. In addition, the big data exchange between the IoT devices and the broker decreases network capability of the edge networks. The authors in this paper propose a novel MQTT with a multicast mechanism to minimize data transfer delay and network usage for the massive IoT communications. The proposed MQTT reduces data transfer delays by establishing bidirectional SDN (Software Defined Networking) multicast trees between the publishers and the subscribers by means of bypassing the centralized broker. As a result, it can reduce transmission delay by 65% and network usage by 58% compared with the standard MQTT.
Year
DOI
Venue
2018
10.3390/s18093071
SENSORS
Keywords
Field
DocType
MQTT,low delay,multicast,SDN,edge computing
Internet of Things,Computer network,Electronic engineering,Multicast,MQTT,Engineering
Journal
Volume
Issue
Citations 
18
9.0
5
PageRank 
References 
Authors
0.87
0
3
Name
Order
Citations
PageRank
Jun-Hong Park150.87
Hyeong-su Kim250.87
Won Tae Kim36112.27