24-07-2012, 03:33 PM
Multiple Sender Distributed Video Streaming
[attachment=28731]
Introduction
Existing CDNs, like Akamai
Receivers only receive streaming content from one sender only
throughput of a single sender may not meet the streaming requirement
Multiple streaming senders
Effectively provide the require throughput by aggregating content from multiple sources
Combats unpredictable congestion in Internet
Motivation
Addresses the problem of video streaming over best effort, packet-switched networks.
Streaming of video requires high bit rates.
Packet loss and delay due to network congestion.
Aim of the proposed approach
Increase throughput in order to meet the high bit rate demands.
Reduce the probability of packet loss.
Receiver-driven Transport Control
Receiver
Calculate the optimal sending rate using RAA based on the RTTs and estimated loss rates
Monitor variations of each sender and readjust rate distributions among senders accordingly
Sender
Estimate and send its round-trip time to the receiver
Run distributed PPA upon receiving the control packets
Control packet format
Synchronization sequence number + RTT+ sending rates
[attachment=28731]
Introduction
Existing CDNs, like Akamai
Receivers only receive streaming content from one sender only
throughput of a single sender may not meet the streaming requirement
Multiple streaming senders
Effectively provide the require throughput by aggregating content from multiple sources
Combats unpredictable congestion in Internet
Motivation
Addresses the problem of video streaming over best effort, packet-switched networks.
Streaming of video requires high bit rates.
Packet loss and delay due to network congestion.
Aim of the proposed approach
Increase throughput in order to meet the high bit rate demands.
Reduce the probability of packet loss.
Receiver-driven Transport Control
Receiver
Calculate the optimal sending rate using RAA based on the RTTs and estimated loss rates
Monitor variations of each sender and readjust rate distributions among senders accordingly
Sender
Estimate and send its round-trip time to the receiver
Run distributed PPA upon receiving the control packets
Control packet format
Synchronization sequence number + RTT+ sending rates