Author_Institution :
Dept. of Electr. & Comput. Eng., Ryerson Univ., Toronto, ON, Canada
Abstract :
Many multimedia applications involve real-time video communication over distributed systems, in which there is no centralized controller. Examples of such distributed systems are peer-to-peer (P2P) networks, wireless ad hoc networks, and wireless sensor networks. In this paper, we provide a review of recent advances on optimal resource allocation for video communication over some major distributed systems including P2P streaming systems, wireless ad hoc networks, and wireless visual sensor networks. In P2P streaming systems, we review the scheduling optimization problem, streaming capacity problem, routing optimization problem, and the prefetching optimization problem. In wireless ad hoc networks, we present the routing optimization problem, joint optimization of the source rate and the routing scheme, joint optimization of sender selection and the routing scheme, and joint optimization of the source rate, the routing scheme and the power. In wireless visual sensor networks, we discuss the network lifetime maximization problem, optimal power allocation, maximization of accumulative visual information (AVI). Illustrative simulation results are provided to demonstrate the performance improvement brought by the optimal resource allocation in the distributed systems. Finally, we give our vision on the future work in the area of video communication over distributed systems.
Keywords :
ad hoc networks; media streaming; peer-to-peer computing; scheduling; telecommunication network routing; video communication; wireless sensor networks; P2P streaming systems; accumulative visual information maximization; distributed systems; multimedia applications; network lifetime maximization problem; optimal power allocation; optimal resource allocation; peer-to-peer networks; prefetching optimization problem; routing optimization problem; scheduling optimization problem; sender selection optimization; source rate optimization; streaming capacity problem; video communication; wireless ad hoc networks; wireless visual sensor networks; Centralized control; Communication system control; Control systems; Mobile ad hoc networks; Multimedia systems; Real time systems; Resource management; Routing; Streaming media; Wireless sensor networks; P2P streaming systems; Video communication; distributed systems; resource allocation; wireless ad hoc networks; wireless visual sensor networks;
