3 research outputs found
Geographic Centroid Routing for Vehicular Networks
A number of geolocation-based Delay Tolerant Networking (DTN) routing
protocols have been shown to perform well in selected simulation and mobility
scenarios. However, the suitability of these mechanisms for vehicular networks
utilizing widely-available inexpensive Global Positioning System (GPS) hardware
has not been evaluated. We propose a novel geolocation-based routing primitive
(Centroid Routing) that is resilient to the measurement errors commonly present
in low-cost GPS devices. Using this notion of Centroids, we construct two novel
routing protocols and evaluate their performance with respect to positional
errors as well as traditional DTN routing metrics. We show that they outperform
existing approaches by a significant margin.Comment: 6 page
Implementation of Epidemic Routing with IP Convergence Layer in ns-3
We present the Epidemic routing protocol implementation in ns-3. It is a
full-featured DTN protocol in that it supports the message abstraction and
store-and-haul behavior. We compare the performance of our Epidemic routing
ns-3 implementation with the existing implementation of Epidemic in the ONE
simulator, and discuss the differences
Geolocation Assisted Routing Protocols for Vehicular Networks
International Conference on Connected Vehicles (ICCVE)The class of flooding-based DTN routing protocols that leverage (transitive) encounter probabilities have been shown to perform well in selected simulations and scenarios, however they are especially sensitive to heterogeneous mobility models in which some nodes’ mobility pattern is on a significantly differ- ent timescale than others. In particular, military and disaster response scenarios can exhibit abrupt topology changes. We analytically show that the worst-case inputs to these existing DTN routing algorithms can drastically reduce their performance. In light of such scenarios, we develop new protocols that inherit the benefits of existing schemes, while leveraging geographic assis- tance to enable faster recovery from abrupt topology changes.This work was funded in part by the US Marine Corps and US Nav