Peer-to-Peer (P2P) video delivery using substreams supports uplink heterogeneities of the peers and hence could optimise sharing capabilities with minimum free-riding peers. Therefore, substream-based applications such as PPLive and CoolStreaming have been well accepted after successful deployments in the public Internet. In this approach, a child peer can find a parent peer for a substream ind...

We consider a collaboration of peers autonomously crawling the Web. A pivotal issue when designing a peer-to-peer (P2P) Web search engine in this environment is query routing : selecting a small subset of (a potentially very large number of relevant) peers to contact to satisfy a keyword query. Existing approaches for query routing work well on disjoint data sets. However, naturally, the peers’...

Dynamic load balancing is one key adaptation mechanism often deployed in networking and computing systems. Numerous proposals exist for load balancing in P2P networks. All of them will enhance the availability of P2P system to some extent. However, their convergence rate is still low, and the load collection overhead and load transfer overhead are high. In this paper, we propose an ant-based lo...

Blind flooding is a popular search mechanism used in current commercial P2P systems because of its simplicity. However, blind flooding among peers or superpeers causes large volume of unnecessary traffic although the response time is short. Some improved statistics-based search mechanisms can reduce the traffic volume but also significantly shrink the query coverage range. In some search mechan...

Global grid environments do not only provide massive aggregated computing power but also an unprecedented amount of distributed storage space. Unfortunately, dynamic changes caused by component failures, local decisions, and irregular data updates make it difficult to efficiently use this capacity. In this paper, we address the problem of improving data availability in the presence of unreliabl...

P2P (Peer-to-Peer) overlay is a promising distributed computing and communication paradigm that allows for a group of participants to share information and coordinate their resources. Dissemination of information among end users can also be greatly facilitated by the publish/subscribe model. In this paper, we employ the publish/subscribe model in a P2P mobile tactical networking environment. Co...

Peer-to-peer (P2P) gurus suggest that inexpensive computing power, bandwidth, and storage will enable radically new enterprise forms that are driven by the distribution of interactive computing power more or less equally through the enterprise. Based on the capabilities of the Internet (as opposed to the web), which forms a vast network of computers that can be linked in many different ways, P2...

Aggregated information, such as the total and free capacity of storages, computing power, network bandwidth, and so on, is very important for many peer-to-peer (P2P) applications and P2P-based grid or cloud computing. Previous studies have proposed to build a broadcast tree for a structured P2P network. Along this tree, the root can broadcast a command message to all the other peers, and in the...

Providing on-demand video streaming service over the Internet is a challenging task. In this paper, we propose DirectStream, a directory based peer-to-peer video streaming service that efficiently and cost-effectively provides video ondemand service with VCR operation support. We analytically and experimentally examine the system performance, and show that the proposed scheme can significantly ...

Over the last years, there has been a great development on real time terrain visualization applications using remote databases. One of the main problems that these applications must face is the system scalability. These applications usually use a client-server model that cannot support a large number of concurrent requests without using a considerable number of servers. In this paper, we propos...