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Optimal Distributed MQTT Broker and Services Placement for SDN-Edge Based Smart City Architecture.

Dzaky Zakiyal Fawwaz1, Sang-Hwa Chung1, Chang-Woo Ahn1

  • 1Department of Computer Engineering, Pusan National University, Busan 46241, Korea.

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Summary

A new distributed Message Queuing Telemetry Transport (MQTT) broker architecture optimizes smart city IoT by reducing latency and network traffic. This approach enhances edge computing efficiency and lowers deployment failures.

Keywords:
container placementdistributed MQTTedge computinginternet of things (IoT)smart citysoftware-defined networking

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Area of Science:

  • Computer Science
  • Internet of Things (IoT)
  • Distributed Systems

Background:

  • Smart cities leverage IoT infrastructure for resource management, utilizing protocols like Message Queuing Telemetry Transport (MQTT).
  • Edge computing offers distributed resources closer to data sources, but centralized MQTT brokers pose challenges like latency and bottlenecks in such environments.

Purpose of the Study:

  • To propose and evaluate an optimized distributed MQTT broker architecture for smart city edge computing environments.
  • To address the limitations of centralized MQTT brokers in distributed edge resource scenarios.

Main Methods:

  • Developed a novel distributed MQTT broker architecture tailored for edge resources.
  • Formulated an integer non-linear program to optimize container placement for efficient resource utilization.
  • Conducted extensive simulations comparing the proposed architecture against existing distributed MQTT middleware with greedy and random placement strategies.

Main Results:

  • The proposed distributed MQTT broker architecture significantly reduced network traffic and data delivery latency.
  • Demonstrated superior performance in lowering deployment failure ratio, power consumption, network usage, and synchronization overhead compared to existing methods.
  • Optimized container placement effectively managed edge computing resources.

Conclusions:

  • The optimized distributed MQTT broker architecture is highly effective for smart city IoT applications at the edge.
  • This approach enhances the efficiency, reliability, and performance of data management in distributed IoT systems.