Study of Improving QoS in Unstructured Peer-to-Peer Networks

Peer-to-peer networks have received considerable attention from researchers over the past few years. To provide satisfactory quality of service for peer-to-peer networks, a number of topics still require further investigation. In this project, we will address two important and closely related topics: node clustering and adaptive topology. To provide efficient communications among nodes in the network, node clustering can be utilized to avoid flooding messages. In the first year, we will develop a distributed node clustering scheme. Compared with existing schemes, the proposed scheme aims to achieve better cluster accuracy. In addition, since peer-to-peer networks are highly dynamic, the proposed scheme will deal with node dynamics. One of the major issues that may affect the service quality is peers’ voluntary actions. In the second year, we will design an adaptive topology protocol which can be used by peers to maintain connections with good peers. In addition, the proposed protocol has intrinsic incentive for peers to share resources. As a result, the resulting topologies are believed to be more efficient than existing protocols. We will evaluate the performance of the proposed clustering scheme and the adaptive topology protocol over various types of network topologies through simulations.

Project ID:PB9808-2379
External Project ID:NSC98-2221-E182-033