在HLA/DDM中多播组的分配方法  

Approaches to Multicast Group Allocation in HLA/DDM

作　　者：史军慧[1] 万江华[1] 高洪奎[1] 

机构地区：[1]国防科技大学算机学院

出　　处：《计算机工程与科学》2000年第6期39-41,55,共4页Computer Engineering & Science

基　　金：国家863计划资助项目(863-306-2D01-01-03)

摘　　要：DDM是 HLA接口规范中定义的六大服务之一 ,它允许邦员声明其在路由空间中的公布区域和定购区域 ,从而达到减少 HLA邦员间数据交换量的目的。具体实现方法是数据过滤 ,其核心问题是如何将邦员中具有相似的公布区域或定购区域的对象聚集到一个多播组中。解决这个问题的传统方法是基于固定网格的方法 ,但该法存在一些缺陷。本文提出了三种新的可选方法 。DDM is one of the six service categ ories defined in the HLA Interface Specification.It allows each federate to decl are its publishing regions and subscription regions in a routing space,in order that the exchanged data between federates can be reduced.We can use the method o f data filtering.The core problem is how federates,or more specifically objects within federates,of similar subscription or publishing regions are clustered int o multicasting groups.The traditional approach to this problem is the fixed grid -based approach.Fixed grid filtering,however,has several shortcomings.This pape r describes three alternative new approches.The approaches are evaluated and co mpared in terms of their filtering effectiveness and computational overhead in t he specific context of the HLA data distribution.

关 键 词：数据分布管理(DDM) 聚集 多播组 路由空间 数据更新 

分 类 号：TP393.1[自动化与计算机技术—计算机应用技术]