Using Delay Tolerant Network for the Internet of Things: Opportunities and Challenges

Delay Tolerant Network (DTN) is a class of network architectures that address the lack of continuous network connectivity. This issue has been studied for over a decade by promoting new routing protocols. However, recent researches in DTN should rekindle proposed solutions to support new emerging network-based applications, in which DTN techniques can be used to offer delay tolerant support. Example of these applications domains is Internet of Things (IoT). We survey the use of DTN solutions in IoT applications to overcome connectivity problems considering the opportunities and challenges for each technology. The purpose of this work is to introduce most recent solutions that enable delay tolerant IoT. We propose a taxonomy and discuss advantages and limitations for each study.