SAIC Volkswagen Co., Ltd. (hereinafter referred to as "SAIC Volkswagen") is a joint venture between SAIC Group and Volkswagen Group. It is one of the oldest automobile joint ventures in China. Its headquarters is located in Anting, Shanghai. In the new era of transformation of the automobile industry, SAIC Volkswagen adheres to innovation-driven development, always takes the market as the guide, constantly improves customer satisfaction, and strives to become a "trustworthy, most valuable and innovative automobile joint venture".

In 2018, when SAIC Volkswagen was designing and developing a new generation of Internet of vehicles system, SC department took into account the requirements of large concurrency, low latency and high throughput of the new Internet of vehicles. It referred to the mainstream new Internet of vehicles system architecture at home and abroad and finally adopted the MQTT protocol to build a new generation of Internet of vehicles platform.


Security access of massive vehicle operation system

The new generation of smart Internet of Vehicles system will cover new Internet of Vehicles services such as vehicle data reporting, POI issuance, file pushing, configuration distribution, messages pushing, operation care, etc., and will generate massive message topics for message subscription and publishing. How to realize the secure and stable access of massive vehicle operation systems to the cloud based on the MQTT protocol is an issue that must be paid attention to.

Real-time and reliability of message in complex network environment

For the remote configuration (remote control of the car) scenario in a complex network environment, there are high requirements for the reliability and real-time of the message.

How to quickly realize the business docking when the project time is tight and the task is heavy,

The development cycle of the new generation of smart Internet of Vehicles system is short and the tasks are heavy. It needs to quickly decouple the interaction process between the TSP system and the vehicle system, and provide a complete, stable, and scalable northward data interface for docking.


EMQ's Internet of Vehicles solution is based on EMQX Enterprise that has the characteristics of the massive connection and high concurrent message throughput. It provides functions including data persistence, southward message cache, secure connection and secure authentication. It meets the needs of SAIC Volkswagen in the construction of the new generation of Internet of Vehicles.

Carrier-class distributed cluster architecture

Through the multi-node distributed cluster deployment of EMQX, the capability to connect and transmit data between millions to tens of millions of connected vehicles is realized. It supports secure access based on TLS/DTLS.

Powerful rule engine, one-click data persistence

EMQX provides rich northward data storage capabilities. Through a powerful rule engine, it achieves persistent storage of massive vehicle data, and achieves asynchronous data consumption through bridging data to Kafka message queues.

Multiple guarantee mechanisms to ensure real-time and reliable messages

EMQX realizes real-time, safe and reliable message transmission for vehicles in a complex network environment by providing heartbeat mechanism, will messages, QoS message control, offline messages and security management.

Universal bus capability integration, decoupling equipment and applications

Through EMQX’s capability of Internet of Vehicles to access gateway bus , the loose coupling of the new generation of smart Internet of Vehicles system and car operation system has been realized. The SC team from SAIC Volkswagen only needs to focus on the development of upper-layer applications. The interaction between smart Internet of Vehicles system and car operation system only needs to call the standard interface capabilities of EMQX.


In 2020, SAIC Volkswagen's new-generation Internet of Vehicles platform was successfully launched. The total number of vehicles connected to the platform has now reached hundreds of thousands. It is expected to exceed one million by the end of 2021 and continue to grow. The platform has always maintained a stable operating status.

So far, the business needs of SAIC Volkswagen's new Internet of Vehicles and new car operation system at the access layer have basically been met with the help of EMQX. On this basis, SAIC Volkswagen and EMQ will jointly optimize the existing rule engine and encoding and decoding capabilities in the next step, and consider implementing more business rule filtering and distribution at the message middleware layer to provide a more convenient data interface for the development of upper-layer applications . SAIC Volkswagen’s new Internet of Vehicles system will meet the development of Internet of Vehicles in the next few years and provide SAIC Volkswagen customers with a more intelligent and convenient human-vehicle interactive experience.

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