SPHERE： a scalable multicast framework in overlay networks  

作　　者：刘云 Shen Bo Zhang Hongke 

机构地区：[1]School of Electronics and Information Engineering, Beijing Jiaotong University, Beijing 100044, P.R. China

出　　处：《High Technology Letters》2006年第1期1-5,共5页高技术通讯（英文版）

摘　　要：This paper presents Sphere, a scalable multicast framework in overlay network. Sphere is a highly efficient, serf-organizing and robust multicast protocol overlayed on the Internet. The main contrihutions of this paper are twofold. First, Sphere organizes the control topology of overlay network in two directions： horizontal and vertical. The horizontal meshes are used to locate and organize hosts in tracks, and the vertical meshes are. used to manage the data paths between tracks. Second, Sphere balances stress and stretch of the overlay network by assigning hosts into different tracks and clusters. This structure distributes stress on the muhicast trees uniformly, and meantime makes path stretch as small as possible. Simulations results show that Sphere can support multicast with large group size and has good performance on organizing meshes and building data delivery trees.

关 键 词：MULTICAST overlay networks group management SELF-ORGANIZATION 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]