Velocity Based Reliable Forwarding Strategy Towards Disconnect Link Avoidance in NDN-VANETs

Abstract

Vehicular Named-Data Network (VNDN) is an adoption of Named-Data Network (NDN) and Vehicular ad hoc Network (VANET). Unlike current Internet architecture i.e., TCP/IP, vehicles require desired content objects by broadcasting the name of them in the form of Interest packet. The vehicle who has requested content object, simply generates Data packet and broadcasts towards the content requester vehicle. In VNDN, there exist no end-to-end connection between vehicles. However, this situation may lead to the problem of broadcast storm of Interest packets, where each vehicle transmit Interest packet in the network to search the producer vehicle. There are a lot of proposed work exist to avoid broadcast storm of Interest packets, but, these solutions lead towards the problem of disconnect link and isolated network between vehicles. The disconnect link prevent Data packets from reaching to the content requester due to high and different speed of the vehicles. Further, isolated network refers as whenever vehicles become unable to broadcast Interest packets in the network. However, a forwarding strategy, Velocity based Reliable Forwarding Strategy (VRFS) is proposed in order to avoid disconnect link problem and isolated network in VNDN. For this purpose, the speed and location information of the vehicles are used during the communication in the network. Furthermore, the proposed scheme is evaluated through simulations as well as compared to the traditional VNDN implementation.