This article will explain in detail how the MQTT protocol works in the real-world application scenarios of the oil industry.

The 2019 China International Intelligence Industry Expo (hereinafter referred to as the 2019 Intelligence Expo) was held in Chongqing International Expo Center from August 26 to 29, 2019. At the invitation of the Organizing Committee of the Expo, Intel Corporation attended the exhibition and created the "Intel Intelligence Innovation Zone".

NB-IoT is a new type of cellular technology developed by the 3GPP standardization organization. It belongs to the low-power wide-area (LPWA) IoT connection, that is mainly used to connect terminals with limited bandwidth resources, allowing terminals to collect and exchange data with less resources than GRPS, 3G, LTE and other technologies.