Gateway-assisted retransmission for lightweight and reliable IoT communications

Hui Ling Chang, Cheng Gang Wang, Mong Ting Wu, Meng Hsun Tsai, Chia Ying Lin

研究成果: Article同行評審

10 引文 斯高帕斯(Scopus)


Message Queuing Telemetry Transport for Sensor Networks (MQTT-SN) and Constrained Application Protocol (CoAP) are two protocols supporting publish/subscribe models for IoT devices to publish messages to interested subscribers. Retransmission mechanisms are introduced to compensate for the lack of data reliability. If the device does not receive the acknowledgement (ACK) before retransmission timeout (RTO) expires, the device will retransmit data. Setting an appropriate RTO is important because the delay may be large or retransmission may be too frequent when the RTO is inappropriate. We propose a Gateway-assisted CoAP (GaCoAP) to dynamically compute RTO for devices. Simulation models are proposed to investigate the performance of GaCoAP compared with four other methods. The experiment results show that GaCoAP is more suitable for IoT devices.

期刊Sensors (Switzerland)
出版狀態Published - 2016 9月 1

All Science Journal Classification (ASJC) codes

  • 分析化學
  • 資訊系統
  • 儀器
  • 原子與分子物理與光學
  • 電氣與電子工程
  • 生物化學


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