標題: Distortion-based Video Streaming over Vehicular Ad Hoc Networks in Highway
作者: Chang, Je-Wei
Sun, Kuan-Yu
Chen, Chien
Jeng, Andy An-Kai
資訊工程學系
資訊技術服務中心
Department of Computer Science
Information Technology Services Center
關鍵字: VANET;Cell-based Routing;Markov-Decision Process;Video Streaming;Distortion
公開日期: 1-Jan-2014
摘要: There are already many routing protocols tailored for Vehicular Ad Hoc Networks (VANET). However, few of them are suitable for real-time video streaming delivery. The network partition nature and dynamic changing network topology of VANET make it hard for existing protocols to satisfy the stringent delay requirements of video streaming or other multimedia applications. To address this issue, this study first develops a rate distortion model based on a shadowing model and 802.11 DCF with RTS/CTS scheme over a highway road segment. Based on the proposed rate distortion model and traffic statistic information (vehicle density over a road), we can decide the best next-hop forwarding distance. Since a vehicle may not have a neighbor vehicle at the best forwarding distance, this study proposes a cell based packet forwarding scheme based on the derived best forwarding distance to prioritize the neighboring vehicles of a sender We set up the simulations using NS2 to validate the performance of the proposed protocol. The results show that the proposed protocol can yield a 30% PSNR improvement.
URI: http://hdl.handle.net/11536/128541
ISBN: 978-1-4799-6078-1
ISSN: 
期刊: 2014 IEEE 17TH INTERNATIONAL CONFERENCE ON INTELLIGENT TRANSPORTATION SYSTEMS (ITSC)
起始頁: 2324
結束頁: 2329
Appears in Collections:Conferences Paper