Title :
Cross Layer Design for Video Transmissions in Metro Passenger Information Systems
Author :
Zhu, Li ; Yu, F. Richard ; Ning, Bing
Author_Institution :
State Key Lab. of Rail Traffic Control & Safety, Beijing Jiaotong Univ., Beijing, China
Abstract :
In metro Passenger Information Systems (PISs), frequent train handoffs can cause severe video distortion. In this paper, we take an integrated design approach to jointly optimize application layer parameters and handoff decisions to improve video transmission quality over PISs. We present a train-ground video communication network based on fountain codes and IEEE 802.11p for metro PISs. The handoff decision and application layer parameters adaptation problem is formulated as a stochastic semi-Markov Decision Process (SMDP). Minimizing the end-to-end total video distortion is the objective in our model. Simulation results show that the proposed SMDP based optimization algorithm can significantly improve the end-to-end video transmission quality in metro PISs.
Keywords :
Markov processes; optimisation; public information systems; railway communication; video coding; video communication; wireless LAN; IEEE 802.11p; SMDP; application layer parameter adaptation problem; cross layer design; end-to-end video transmission quality; fountain code; handoff decision; metro PIS; metro passenger information system; optimization; stochastic semiMarkov decision process; train-ground video communication network; video distortion; Adaptation model; Communication networks; Markov processes; Optimization; Signal to noise ratio; Streaming media; Wireless communication;
Conference_Titel :
Global Telecommunications Conference (GLOBECOM 2010), 2010 IEEE
Conference_Location :
Miami, FL
Print_ISBN :
978-1-4244-5636-9
Electronic_ISBN :
1930-529X
DOI :
10.1109/GLOCOM.2010.5684174
