Design on Publish/Subscribe Message Dissemination for Vehicular Networks with Mobile Edge Computing

The safety messages in vehicular networks require to be transmitted as fast as possible. On the other hand, the high mobility of vehicles poses an other major challenge on efficient message disseminations. In this paper, we present a design on publish/subscribe message dissemination (DPSMD) for vehicular networks with Mobile Edge Computing (MEC). Our design consists of message brokers that provide message exchange services, message handlers that excavate the potential value of messages and message hubs that bridge different parts of the system. MEC can be made use of in DPSMD to provide low-latency message services for vehicle users, while wide-area message disseminations are also well supported. The detailed descriptions is then given, including topic designs, subscription, publishing processes and message validating. Finally, a testbed is built up to evaluate the performance of the DPSMD in terms of the average time of message distributions.