Journal of information and communication convergence engineering

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
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Distributed CoAP Handover Using Distributed Mobility Agents in Internet-of-Things Networks

  • Choi, Sang-Il (Future Strategy & Convergence Research Institute, Korea Institute of Civil Engineering and Building Technology) ;
  • Koh, Seok-Joo (School of Computer Science and Engineering, Kyungpook National University)
  • Received : 2016.11.17
  • Accepted : 2016.12.15
  • Published : 2017.03.31
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Abstract

The constrained application protocol (CoAP) can be used for remotely controlling various sensor devices in Internet of Things (IoT) networks. In CoAP, to support the handover of a mobile sensor device, service discovery and message transmission needs to be repeated, although doing so would increase the handover delay significantly. To address this limitation of CoAP, a centralized CoAP scheme has been proposed. However, it tends to result in performance degradation for an inter-domain handover case. In this letter, we propose a distributed CoAP handover scheme to support the inter-domain handover. In the proposed scheme, a distributed mobility agent (DMA) is used for managing the location of mobile sensors in a domain and performing handover control operations with its neighboring DMAs in a distributed manner. A performance comparison reveals that the proposed scheme offers a performance improvement of up to 29.5% in terms of the handover delay.

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References

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