LoI: Efficient relevance evaluation and filtering for distributed simulation |
| |
Authors: | Zhong Zhou Wei Wu |
| |
Affiliation: | (1) State Key Laboratory of Virtual Reality Technology and Systems, Beihang University, Beijing, 100191, China;(2) School of Computer Science and Engineering, Beihang University, Beijing, 100191, China |
| |
Abstract: | In large-scale distributed simulation, thousands of objects keep moving and interacting in a virtual environment, which produces
a mass of messages. High level architecture (HLA) is the prevailing standard for modeling and simulation. It specifies two
publish-subscribe mechanisms for message filtering: class-based and value-based. However, the two mechanisms can only judge
whether a message is relevant to a subscriber or not. Lacking of the ability to evaluate the relevance, all relevant messages
are delivered with the same priority even when congestion occurs. It significantly limits the scalability and performance
of distributed simulation. Aiming to solve the relevance evaluation problem, speed up message filtering, and filter more unnecessary
messages, a new relevance evaluation mechanism Layer of Interest (LoI) was proposed by this paper. LoI defines a relevance
classifier based on the impact of spatial distance on receiving attributes and attribute values. An adaptive publish-subscribe
scheme was built on the basis of LoI. This scheme can abandon most irrelevant messages directly. Run-time infrastructure (RTI)
can also apply congestion control by reducing the frequency of sending or receiving object messages based on each objects’
LoI. The experiment results verify the efficiency of message filtering and RTI congestion control.
Supported by the National Basic Research Program of China (Grant No. 2009CB320805), the National Natural Science Foundation
of China (Grant No. 60603084), and the National High-Tech Research & Development Program of China (Grant No. 2006AA01Z331) |
| |
Keywords: | distributed simulation high level architecture (HLA) relevance evaluation layer of interest (LoI) run-time infrastructure (RTI) |
本文献已被 维普 SpringerLink 等数据库收录! |
|