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- Type of Document: M.Sc. Thesis
- Language: Farsi
- Document No: 45478 (19)
- University: Sharif University of Technology
- Department: Computer Engineering
- Advisor(s): Ghanbari, Mohammad
- Abstract:
- In recent years, advances in computer technology and widespread use of computers have alleviated the wide usage of network-based services in contrast to traditional services like radio and television. These facilities made it possible to integrate various type of services with adding new features whenever is necessary.
Video has specific characteristics that its transport over the network imposes some challenges to service providers. In the literature several solutions have been offered for solving the problems of network-based video services. A set of these solutions use routers and other network assisted devices to gather information for better transportation. These router-assisted solutions try to gather information about network congestion and modify its sending rate to deliver a better video quality to the receiver.
In this thesis, we have studied some of the network characteristics that could assist the sender to improve the estimation of sending rate and have proposed some approaches to use the gathered information to control network congestion in various scenarios. The characteristics of the transmission path that we have considered are as follows: link utilization, number of flows in the link, available bandwidth, and link capacity. In the implemented simulations we have used these data and studied their effects on estimating the sending rate. Simulation results show that by using the proposed methods, video traffic sending rate converges to the ideal rate faster and experiences less fluctuation - Keywords:
- Video Streaming ; Rate Control ; Network Adaptive ; Router-Assisted
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