P2P vs. P4P

P2P with P4P

• This is so called Proactive Provider Participation for P2P, or called P4P, P2P with P4P.
• Now we give two examples to illustrate how the iTracker interfaces are utilized. the above shows an example P2P application with an appTracker using the info and policy interfaces to request network topology/status and guidelines/policies information. In the example, a P2P system spans two network providers A and B. Each network provider runs an iTracker for its own network. Peers a and b query their local iTrackers through the info and policy interfaces when bootstrapping; they then register with the appTracker and forward it the information obtained from iTrackers. The appTracker makes peer selection considering both application requirements and iTracker information. Note that as a variant, it might be that instead of the peers query the iTrackers, the appTracker, trusted by a network provider (e.g., a major P2P developer), queries the iTrackers to reduce information exposure to general peers.
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• The figure shows another example of using P4P. It shows how to request network capabilities through the capability interface. Specifically, the appTracker sends a request to iTracker B asking the network provider to allocate fixed, high-capacity servers to aid in distributing content. The iTracker allocates a server in its networ and returns its address to the appTracker. The appTracker will then include the server in returned peer sets for those peers in B.
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• he above comparison shows the performance of traditional CDN, P2P, and P2P with P4P. P2P can be minimize the traffics at the server site, but the congestions is usually occurred at the gateway site among gateway routers. And, P2P with P4P performs the algorithm of the traffics-path hierarchy to improve the quality of the connectivity among different networks.

Pseudo Subjective Quality Assessment (PSQA):

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• This methodalogy is to solve out issues damaging the quality of video streams on communications. The founder and CEO of Goalbit-Solutions Inc., partnership with us, presented the first quality-central design of Peer-to-Peer for live-broadcasting thesis in 2007