In this work we discuss architectural alternatives for the design of a proxy that interconnects IoT domains running CoAP with the rest of the Internet including micro datacenters and other domains building scalable hierarchical architectures. We assume that the CoAP domain is terminated by an IoT proxy with cache, and we investigate several design alternatives, assuming that the proxy autonomously maintains data freshness. Our analysis indicates that multicast and observe-based proxies perform better than the default POST/GET approach in terms of successful data transmission, round trip delay and energy consumption, with the multicast option having a slight advantage.

中文翻译：

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物联网领域的协议架构


在这项工作中，我们讨论了代理设计的架构替代方案，该代理将运行 CoAP 的 IoT 域与互联网的其余部分互连，包括微型数据中心和构建可扩展分层架构的其他域。我们假设 CoAP 域由带有缓存的 IoT 代理终止，并且我们研究了几种设计替代方案，假设代理自主维护数据新鲜度。我们的分析表明，在成功的数据传输、往返延迟和能耗方面，多播和基于观察的代理比默认的 POST/GET 方法表现更好，其中多播选项稍有优势。