Publication

This deliverable provides a specification of the V2X communication protocol to enable  platooning using the wireless communication standard ITS-G5. The protocol specifies how vehicles inform each other about their ability to form a platoon, and which data has to be exchanged when executing the actual procedure of joining, driving in the platoon and leaving a platoon. It includes messages and how to exchange them to allow for the aforementioned situations.

In  ENSEMBLE,  a  new  facilities  layer  protocol  supporting  the  platooning  application  is  developed. This  makes  use  of  already  standardized  lower  layer  protocols  in  ETSI  TC  ITS.  The  platooning protocol  uses  already  available  message  types  and  signals,  and  where  necessary  new  ones  are introduced.  The  protocol  logic  for  joining,  platooning,  and  leaving  has  been  derived  from  the  use cases in deliverable D2.2 of ENSEMBLE. The available security framework for cooperative intelligent transport  system  (C-ITS)  in  Europe  is  used  for  signing  and  verifying  unencrypted  messages  to establish a trust domain. In addition, the security is extended with encryption of platoon application data using symmetric keys. Deliverable 2.9 will specifically treat security in platooning.

It should be noted that parts of this deliverable might be subject to changes such as the specification
of messages, data elements, and the security approach.