Quality of Service for Packet Video over P2P Network using Active Measurement

摘要

During the last few years, a new phenomenon had changed the internet business model especially for Internet Service Provider. The peer to peer (P2P) phenomenon is facilitating information flow from and back to end users. P2P systems are dynamic in nature where nodes can join and leave the network frequently. These nodes might not have a permanent IP addresses and dynamic changes over the inter connection links. One of the P2P mostly used is Gnutella. Gnutella is feasibly and still firmly established as the third-largest peer-to-peer network. This paper concentrate on the development of an optimum model use Gnutella system as well as evaluating of the quality adaptation of the streaming mechanism. Multimedia streaming is a real time application, so the main challenges in the design of this mechanism are (1) selection of senders peers nodes; (2) stream switching among the peers; (3) optimizing video quality by active measurements of links; and (4) enhancing the overall Quality of Service (QoS). This project uses NS2 for the model simulation.