MIN-MQTT: A Publish/Subscribe Approach Based on Multi-Identifier Network in V2X

Message Queuing Telemetry Transport (MQTT) is a data transmission protocol based on the publish/subscribe model. Currently, MQTT is extensively employed in the Internet of Vehicles due to its lightweight, efficient, and reliable attributes. Existing MQTT protocols are mostly built on the traditional TCP/IP architecture. However, the singularity of the underlying communication semantics constrains their effectiveness in handling data forwarding within V2X (Vehicle to Everything) networks. Multi-Identifier Network (MIN) emerges as a promising future network architecture, which supports both push-based and pull-based semantics along with multiple network identifiers. It offers excellent mobility support and efficient data transmission capabilities. In this paper, we propose MIN-MQTT, a publish/subscribe approach based on MIN for the V2X environment. MIN-MQTT leverages network identifiers for efficient packet forwarding and provides seamless mobility support. It also ensures data integrity and traceability through node identity binding, signature verification, and other security mechanisms. Experimental results demonstrate that MIN-MQTT outperforms the existing schemes in terms of transmission performance and resource consumption in the V2X environment.