This paper is in the context of Smart Cities and Internet of Things (IoT). We proposed a novel approach in communication of IoT devices via SMS messages. This can be beneficial during changing configuration of IoT devices or during sending data from IoT devices. SMS has some disadvantages in security and effective payload. As the security is an ongoing topic in this field, our solution manages to speedup key exchange process up to 62% compared to other solutions. We add the possibility of quick exchange of API key which is a key part in communication between IoT device and central server. With limitations of SMS length, we design the use of compression methods which can send 304 bytes in 140 bytes of a SMS body. Depending on the final usage of IoT device there is a possibility to use secure communication and/or compression. These new functions have only 4,3% time overhead in the process of sending data. That is negligible in devices which usually have to communicate in the case of predefined events or only a few times a day.

中文翻译：

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使用SMS与IoT设备进行通信

本文是在智能城市和物联网（IoT）的背景下进行的。我们提出了一种通过SMS消息进行IoT设备通信的新颖方法。这在更改IoT设备的配置或从IoT设备发送数据期间可能会很有用。SMS在安全性和有效负载方面有一些缺点。由于安全性是该领域的一个持续主题，因此与其他解决方案相比，我们的解决方案设法将密钥交换过程加快了62％。我们增加了快速交换API密钥的可能性，这是IoT设备与中央服务器之间通信的关键部分。由于SMS长度的限制，我们设计使用压缩方法，该方法可以在140字节的SMS正文中发送304字节。根据物联网设备的最终用途，可以使用安全的通信和/或压缩。这些新功能在发送数据的过程中仅占4.3％的时间开销。在通常需要进行预定义事件或每天仅几次通信的设备中，这可以忽略不计。