Abstract
Named Data Networking (NDN) has been recently proposed as a prominent solution for content delivery in the Internet of Vehicles (IoV), where cars equipped with a variety of wireless communication technologies exchange information aimed to support safety, traffic efficiency, monitoring and infotainment applications. The main NDN tenets, i.e., name-based communication and in-network caching, perfectly fit the demands of time- and spatially-relevant content requested by vehicles regardless of their provenance. However, existing vehicular NDN solutions have not been targeted to wisely ensure prioritized traffic treatment based on the specific needs of heterogeneous IoV content types. In this work, we propose a holistic NDN solution that, according to the demands of data traffic codified in NDN content names, dynamically shapes the NDN forwarding decisions to ensure the appropriate prioritization. Specifically, our proposal first selects the outgoing interface(s) (i.e., 802.11, LTE) for NDN packets and then properly tunes the timing of the actual transmissions. Simulation results show that the proposed enhancements succeed in achieving differentiated traffic treatment, while keeping traffic load under control.
Highlights
IntroductionInternet of Vehicles” (IoV) can be defined as a large-scale distributed and dynamic system for “Vehicle-to-everything” (V2X) wireless communications (with X being another vehicle, the road, a sensor, a pedestrian and Internet facilities); see Figure 1
The technological advancements in the field of sensing, automation, computing, communication and networking technologies for vehicles are driving the shift from conventional Vehicular Ad hoc Networks (VANETs) to the so-called “Internet of Vehicles” (IoV) [1,2].IoV can be defined as a large-scale distributed and dynamic system for “Vehicle-to-everything” (V2X) wireless communications; see Figure 1
Values get nearly halved when passing from 8 to 24 consumers. This is because consumers can benefit from cache hits for the requested content in neighbor vehicles, which previously requested or forwarded the content, with no need to reach the original content source. Such a trend is more evident for the SF-Named Data Networking (NDN) scheme where Interest and Data packets are exchanged over the IEEE 802.11 OCB face only
Summary
IoV can be defined as a large-scale distributed and dynamic system for “Vehicle-to-everything” (V2X) wireless communications (with X being another vehicle, the road, a sensor, a pedestrian and Internet facilities); see Figure 1. It represents a prominent instantiation of the Internet of Things (IoT) technology in an Intelligent Transportation System (ITS) aimed at supporting a wide range of safety and non-safety applications for smart, efficient and green traffic management, environmental monitoring, intelligent vehicle control, safe, comfortable and pleasant driving and traveling experience of users on wheels. NDN receiver-driven connectionless communications, based on the exchange of two packet types—called Interest and Data—and pervasive in-network caching suit the vehicular ecosystem. In [25], the following scheme has been proposed: /traffic/geolocation/timestamp/data-type/nonce, where the component traffic is the application identifier, the geolocation component identifies road, section and direction, the timestamp component represents a time period, the data type component indicates the meaning of the data itself, e.g., vehicle speed, and the nonce is a random number generated by the publisher
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