Christian-2018

Conference proceedings article

The growing interest in vehicular networks (VANETs) is encouraging its deployment in new environments, for both safety applications and to provide Internet to its users. Vehicles can connect to others, or to the infrastructure, providing an Internet connection. The communication equipment placed inside the vehicles may have multiple network interfaces of diverse technologies, such as IEEE 802.11p/WAVE, IEEE 802.11a/g/n (Wi-Fi) and cellular. For this purpose, multihoming and network coding can be used to provide high bandwidth and reliability to these services, reducing packet losses due to poor wireless signal quality, therefore improving the final Quality-of-Service (QoS). This work evaluates the impact of a Systematic Network Coding (SNC) approach in multihoming when the coding is applied over traffic incoming from multiple technologies, or from a single technology, depending on the entity responsible for the encoding process. The multi-technology architecture proposed in this work will be evaluated using different coding configurations (generation and buffer sizes) and by analyzing its impact on the packet loss recovery ratio. The comparative results show that the multi-technology approach has a better delivery ratio when compared to the single-technology, despite the small impact on the packet delay.