Traffic Control for Peer-to-Peer Networks in Heterogeneous Environment

我们研究了一种新的内容分发系统的基础上对等网络异构网络环境。本文提出了一种新的主动测量方法ABdis，用于估计通信网络路径上的可用带宽。然而，许多传统的主动测量方法/工具只能测量/估计可用带宽的平均值，而不能测量其分布。如果测量短时间间隔内平均可用带宽的分布，则该信息对于网络管理、代理选择和端到端接纳控制是有用的。本文提出了一种端到端的主动测量方法ABdis，该方法使用多个不同速率的探测器和参数匹配技术来估计网络路径中可用带宽的分布。此外，我们还提出了一种非结构化对等网络中的搜索消息转发方法。所提出的方法赞赏的RTT（往返时间）从对等点到对等点之间的距离。所提出的方法建立了一个虚拟的领域，其中每个节点之间的距离保持。它试图保持搜索消息在字段上转发的方向。我们通过计算机仿真对所提出的方法进行了评估，结果表明，所提出的方法可以实现网络流量的大幅减少。

We have investigated a new content delivery system based on peer-to-Peer networking for heterogeneous network environment. This proposed system consists on traffic control with real-time network quality measurement and pure-type peer-to-peer network architecture.We have proposed ABdis, a new active measurement method for estimating the available bandwidth on the communication network path. Many conventional active measurement methods/tools, however, can mea-sure/estimate only the average of the available bandwidth and cannot measure its distribution. If the distribution of average available bandwidth over short interval is measured, the information is useful for network management, proxy selection and end-to-end admission control. We propose an end-to-end active measurement method called ABdis which can estimate the distribution of the available bandwidth in a network path. ABdis uses multiple different rate probes and a parameter-matching technique for estimating distribution. Furthermore, we show experimental results by simulation.We have also proposed a search message forwarding method in an unstructured Peer-to-Peer network. The proposed method appreciates the RTT (Round Trip Time) from peers to peers as the distance between peers. The proposed method builds a virtual field in which the distance between each peer is maintained. It tries to maintain a direction of a search message forwarding on the field. We evaluated the proposed method by computer simulation and show that the proposed method can achieve magnificent reduction about network traffic.