(武汉大学 a.测绘遥感信息工程国家重点实验室; b.电子信息学院 武汉 430079)
关键词:搜索模型; 地形漫游; 分组; 洪泛; 对等网
Massive terrain navigation search model based on P2P
PAN Shaoming YU Zhanwu WANG Haob LI Ruia
(a.State Key Laboratory of Information Engineering in Surveying Mapping & Remote Sensing b.School of Electronic Information Wuhan University Wuhan 430079 China)
Abstract:As the number of clients increases the server performance will drop too rapidly to satisfy the client realtime rending requirement because the server loads are increasing linearly for the kind of client/server architecture. The method through peertopeer (P2P) to address the server bandwidth and performance bottleneck in large scale massive terrain navigation has attracted much effort based on P2P networks. Due to peers’ dynamics how to find the server peers quickly is the key problem on sharing the tiles based on P2P. A searching model called GFLOODING was proposed for the system which was based on the buffer map (BM) info and group peer map (GPM) info when deciding from which peers to get the tiles. Compared test result in prototype system indicates that the proposed module can satisfy the large scale massive terrain navigation system and has higher efficiency than traditional module. ......