On the role of vehicular mobility in cooperative content caching (original) (raw)

Rapid prototyping of cooperative caching in a VANET: A case study

2017

Due to the complex nature of mobile ad hoc networks, simulation is an important tool used to explore approaches and validate research. De facto simulation tools for networking research such as ns-3 are extremely powerful. However, the time to develop, execute, and analyze a meaningful simulation in these tools can be significant. In addition to the unavoidable learning curve associated with the tool itself, the developer must have significant coding skills and domain knowledge. Once development of the simulation is complete, the time required to execute the simulation can be significant. In this paper, we present a case study that focuses on the use of the Netlogo tool to explore the impact of certain parameters on a cooperative cache deployed within a vehicular network. The results of the Netlogo simulation are then compared to the results of a similar simulation developed in ns-3. Our work shows that meaningful results can be obtained using Netlogo with less investment of time at ...

Caching dynamic information in vehicular ad hoc networks

2010

Recent advances in VANET technologies have propelled the development and deployment of a wide variety of Vehicular Information Systems (VIS) to vehicles. Such systems provide real-time, crucial information, to drivers, ranging from collision avoidance warnings to the availability of road-side facilities. Despite the invaluable information provided by such systems, the imposed network overhead, due to the necessity of maintaining a global view of the road/vehicular networks and the surrounding environment, cannot be dismissed.

An edge communication based probabilistic caching for transient content distribution in vehicular networks

Scientific Reports

Vehicular Content Networks (VCNs) represent key empowering solution for content distribution in fully distributed manner for vehicular infotainment applications. In VCN, both on board unit (OBU) of each vehicle and road side units (RSUs) facilitate content caching to support timely content delivery for moving vehicles when requested. However, due to limited caching capacity available at both RSUs and OBUs, only selected content can be cached. Moreover, the contents being demanded in vehicular infotainment applications are transient in nature. The transient content caching in vehicular content networks with the use of edge communication for delay free services is fundamental issue and need to get addressed (Yang et al. in ICC 2022-IEEE international conference on communications. IEEE, pp 1–6, 2022). Therefore, this study focuses on edge communication in VCNs by firstly organizing a region based classification for vehicular network components including RSUs and OBUs. Secondly, a theor...

Towards Improved Vehicular Information-Centric Networks by Efficient Caching Discovery

Vehicles

The number of connected cars and the massive consumption of digital content on the Internet have increased daily. However, the high mobility of the vehicles, coming from patterns’ variation over time, makes efficient large-scale content distribution quite challenging. In light of this, the emerging Vehicular Named Data Network (VNDN) architecture provides support for content-centric network communications and caching capabilities, which allows reliable and larger-scale content delivery over Vehicular Ad-Hoc Networks (VANETs). This notwithstanding, the high number of interest packets in VNDN tends to introduce broadcast storm occurrences during the cache discovery process. Thus, network performance degradation comes up for the influence of both increased packet loss rates and delays on content recovery during communication between vehicles. This work proposes a new cache discOVEry pRoTocol (OVERT VNDN), which combines the computational geometry and degree centrality concepts to tackl...