Intelligent Transportation Systems (ITS) are developing systems to enhance traffic efficiency, road safety and driving assistance.

A plurality of ITS solutions are being analyzed and standardized to have to support future services such as Smart Cities or autonomous driving.


The V2X-Arch project (https://www.cellnextelecom.com/en/projects/v2x-arch/) is a project led by Cellnex Telecom focusing on V2X architectures for next generation ITS services. The technology developed in the project is based on the ETSI ITS-G5 standard. ETSI G5 provides vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) communications and supports various underlying technologies, such as as 802.11p, and LTE, and in the near future 5G.


Model on Intelligent Transport Systems from CAR 2 CAR Communications Consortium. Source: C2C CC


The main objectives of the V2X-Arch project are:

-Developing a packet based simulator able to accurately model and evaluate the performance of V2X architectures under realistic traffic conditions

-Evaluate ITS architectures comprising one or multiple technologies in various use cases including road safety, traffic efficiency and multimedia. Particularly, the evaluated use cases are emergency vehicle warning, co-operative forward collision warning, Green Light Speed Advisory (GLOSA) and media downloading.

-Validate selected use cases through driving tests in realistic scenarios.

-Develop business models for the selected use cases.

 i2CAT, as subcontracted partner of Cellnex Telecom, S.A in V2X-Arch, has a supporting role in the project working on simulator

design an evaluation, and on developing use cases on top of an existent ETSI G5 platform from Cohda Wireless.


The V2X-Arch VANET simulator


I2CAT has developed a multilayer open source simulator for V2X based on OMNet++. In addition, the simulator contains several frameworks that provide features like communication capabilities, standards implementations, and realistic traffic flow representation.

The operational structure of the simulator differs depending on the access technology used in each case.


Example of the simulator structure using IEEE 802.11p access technology


The simulator is able to generate vehicles with realistic mobility, and RSUs (RoadSide Units) with communication capabilities using different access technologies like LTE and IEEE 802.11p. 

Under ETSI ITS-G5 standard, vehicles are able to exchange information while are facing “realistic” environmental conditions ported from real scenarios, e.g. fading due to buildings and path-loss, flow alterations due to traffic lights, overtakings and turns, fuel consumption or any ITS-G5 event such as forward collision avoidance, emergency braking lights or emergency vehicle warning.


Running simulation scenario GUI using a real road from Barcelona

 The V2X-Arch project has been co-funded by the Spanish Ministry of Industry, Energy and Tourism, within the framework of the Strategic Action for the Economy and the Digital Society, within the Spanish National Plan for Scientific and Technical Research and Innovation 2013-2016. Record: TSI-100102-2015-13.




11/2016 to 11/2017