Abstract
In vehicular wireless networks, mobile nodes move at a high speed. Thus, the network topology changes frequently. When the traffic is heavy, the collision probability increases dramatically. Network coding is one of the efficient packet transmission schemes to improve throughput and reduce the number of packet transmission. In this paper, we propose an Opportunistic Delayed Transmission (ODT) scheme. This scheme is a trade-off between delay and coding opportunity where the intermediate node may wait for a certain period to maximize the coding opportunity. We use NS-2 network simulator to evaluate the performance of the proposed scheme. The simulation results show that our proposed scheme improves not only the coding ratio but also the packet delivery ratio.
Highlights
With the advances of technology, wireless networks have been widely used everywhere
We introduce our proposed method with network coding in VANET, called opportunistic delayed transmission
We propose an opportunistic delayed transmission scheme to improve the coding ratio in vehicular wireless networks
Summary
With the advances of technology, wireless networks have been widely used everywhere. For example, vehicular wireless networks are deployed to improve vehicle driving safety. Intermediate nodes relay the packets and have network coding capability. Network coding reduces the number of packet transmission and increases the information of packet. Consider an example of wireless transmission without network coding method. A and C, exchange packets each other via an intermediate node B This process only requires three times of transmissions. Network coding can reduce the number of packet transmission. In this case, the throughput is improved about 33.33% compared to the store-and-forward approach. After the timer is timeout, the intermediate node starts to find coding opportunity and transmits all of packets in output queue.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
