Vehicular communications: Emergency video streams and network coding
- Authors
- Park, J.-S.; Lee, U.; Gerla, M.
- Issue Date
- 2010
- Keywords
- Data mules; Network coding; Vehicular networks
- Citation
- Journal of Internet Services and Applications, v.1, no.1, pp.57 - 68
- Journal Title
- Journal of Internet Services and Applications
- Volume
- 1
- Number
- 1
- Start Page
- 57
- End Page
- 68
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/21603
- DOI
- 10.1007/s13174-010-0006-7
- ISSN
- 1867-4828
- Abstract
- Vehicular communications are becoming a reality driven by various applications. Among those applications safe navigation support is of most significance. In designing such navigation safety applications, reliable dissemination of data, i.e., every affected vehicle receives data, is the key issue. Past research focused on the reliable dissemination problem of plainmedia type (e.g., text) safetymessages, whereas we look at the problem of reliable and efficient dissemination of multimedia type (e.g., video, audio) safety information. Considering the potential volume of multimedia traffic in a large metropolis and the unpredictability of vehicular networks (e.g., high speed, partitions, obstacles, radio propagation anomalies, radio interference, etc.), reliable and efficient multimedia dissemination is non-trivial. By using a recently developed technique, network coding, we describe a method for reliable dissemination of video streams in case of emergencies. Simulation results show that in a typical setting, with representative channel errors/losses, our approach yields near 100% delivery ratio as compared to 92% delivery ratio by traditional multicasting. More importantly, the overhead is reduced by as much as 60%. Another important benefit is robustness to temporary disconnections. If the column of vehicles on the road has gaps, network coding jointly with data muling using vehicles in the opposite directions can deliver the multimedia files even to intermittently connected components. © The Author(s) 2010.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > Computer Engineering > Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.