Abstract
The emerging connected and autonomous vehicles (CAVs) challenge ad hoc wireless multi-hop communications by mobility, large-scale, new data acquisition and computing patterns. The Named Data Networking (NDN) is suitable for such vehicle ad hoc networks due to its information centric networking approach. However, flooding interest packets in ad-hoc NDN can lead to broadcast storm issue. Existing solutions will either increase the number of redundant interest packets or need a global knowledge about data producers. In this paper, a Location-Based Deferred Broadcast (LBDB) scheme is introduced to improve the efficiency and performance of interest broadcast in ad-hoc NDN. The scheme takes advantage of location information to set up timers when rebroadcasting an interest. The LBDB is implemented in V-NDN network architecture using ndnSIM simulator. Comparisons with several existing protocols are conducted in simulation. The results show that LBDB improves the overhead, the average number of hops and delay while maintaining an average satisfaction ratio when compared with several other broadcast schemes. The improvement can help offer timely data acquisition for quick responses in emergent CAV application situations.
Highlights
The emerging of connected and autonomous vehicles (CAVs) challenge ad hoc wireless multi-hop communication by mobility induced dynamic topologies, large-amount of mobile devices, and large-scale, in-network data acquisitions and computations
Three main modifications to baseline Named Data Networking (NDN) are suggested for Vehicular Named Data Networking (V-NDN) to tackle the topology dynamics and the data consumption pattern, which are that routing protocols are not necessary due to topology dynamics, ubiquitous cache is desired due to ubiquitous data sources, and caching data regardless of network connectivity is helpful due to potential intermittent connectivity
The proposed scheme builds on the software available for vehicular named data networking where the three modifications are implemented but the scheme itself applies to general ad-hoc NDN scenarios
Summary
The emerging of connected and autonomous vehicles (CAVs) challenge ad hoc wireless multi-hop communication by mobility induced dynamic topologies (e.g., highways vs urban environments), large-amount of mobile devices (e.g., vehicles and the embedded sensors), and large-scale, in-network data acquisitions and computations (e.g., collaborative platooning, smart transportation systems). Recent research has pointed out that the Named Data Networking (NDN) is suitable for such vehicle ad hoc network scenarios due to its information centric networking approach, where data names are directly used in network architecture. It solves the difficulty in managing the host-based IP addresses and matching the content-centric application needs more naturally [1,2]. The proposed scheme builds on the software available for vehicular named data networking where the three modifications are implemented but the scheme itself applies to general ad-hoc NDN scenarios
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