--- title: 'Protocol stack' disqus: hackmd tags: tech --- ## Protocol Stack For battery-driven applications, we need to propose and achieve a reliable, power economical solution. ### Proprietary vs. Standard? A software-defined approach is to avoid the problem of vendor lock-in while promoting long-term interoperability. Adapters, therefore, have the flexibility to adapt to future technological trends and changing corporate needs. Solutions standardized and recognized by a Standards Development Organization also deliver guaranteed credibility and Quality-of-Service. ### Abstract Layers of Protocols ![](https://omaspecworks.org/wp-content/uploads/2018/10/OMA-1.png) ![](https://forums.quectel.com/uploads/default/original/1X/f8d4e6a7122422f6095b01b55e8c92d6f8c77e41.png) ### System Performance * [Impact of CoAP and MQTT on NB-IoT System Performance](https://drive.google.com/file/d/1iT5oINQsktA0icoevjXTgCTBLfjzlwGP/view?usp=sharing)