数据分发管理机制中层次化组播地址分配策略  

A Hierarchical Multicast Address Allocating Strategy in Data Distribution Management

作　　者：史扬[1] 凌云翔[2] 金士尧[2] 张晨曦[2] 

机构地区：[1]海军潜艇学院软件中心,山东青岛266071 [2]国防科学技术大学计算机学院,湖南长沙410073

出　　处：《软件学报》2001年第3期405-414,共10页Journal of Software

基　　金：国家自然科学基金资助项目! (6 95 2 5 2 0 5 )&&

摘　　要：高层体系结构 HL A(high level architecture)支持仿真应用间的互操作和可重用 ,受资源的限制 ,基于因特网的分布仿真面临着系统可扩缩性的挑战 .HLA提供数据分发管理机制 ,为提高系统可扩缩性提供了可能 .分析了 HL A中数据分发管理机制的实现途径 ,针对存在的问题提出了层次化的组播地址分配策略 ,解决了组播地址数量有限与仿真结点机冗余数据接收之间的矛盾 。HLA (high level architecture) is a new generation of technical framework for distributed interactive simulation which supports simulation interoperability and reusability. But distributed interactive simulations under Internet environment face the challenge of system scalability due to the limited resources of bandwidth and computation. HLA provides the possibility for system scalability through data distribution management (DDM). In this paper, the technical approach to DDM is discussed and a new strategy is proposed for multicast address allocation. This new strategy uses a hierarchical method to allocate addresses to solve the problem of contradiction between number of multicast addresses supported by hosts and the redundant data received by hosts. The new strategy also supports for the reliable transferring and data bundling of simulation data.

关 键 词：高层体系结构 可扩缩性 数据分发管理 组播通信 地址分配 分布交互仿真 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]