MV-3500 DoD Modeling & Simulation Network Protocols

Admin This class is intended to introduce you to the simulation network protocols used in DoD M&S applications This will require a little background on networking first, then we can look at two of the major protocols, DIS and HLA

Admin Grading Two midterms (50%) Final project (25%) Programming assignments (25%) Contact: Watkins 281 (stop by any time) Phone (don’t) x mcgredo at nps edu Web page:

Background What do network protocols do? Basically, they are an agreed-upon way for simulations to talk to each other If you have a Boeing flight simulator and a General Dynamics tank simulator and a Hughes helicopter trainer, it would be helpful if all of them could cooperate in the same virtual environment

Virtual World GD Tank Simulator Sikorsky Helo Simulator

Applications Massively Multiplayer Online Games (MMOG), sort of the commercial application of military R&D over the last 20 years. Large scale, with thousands or tens of thousands of participants Online worlds--live simulations and role playing in a virtual world; less emphasis on physics, more on human interaction Analytical models--semi-automated forces, not necessarily any human participation

Military Simulations JANUS OneSAF ModSAF Lots and lots more.

Protocols So how do simulations talk to each other? Generally this happens across the network (“distributed”) as multiple computers cooperate on the problem. The substrate used by all modern simulations is TCP/IP sockets Started with ad-hoc protocols, made up for each task Moved on to Distributed Interactive Simulation (DIS) and High Level Architecture (HLA) Web Services (XML based) are emerging

Protocols TCP/IP Sockets Ad-Hoc Protocols DISHLA Web Services Application/Simulation

Background During this class, we’ll look at each of these elements: TCP/IP sockets Ad-hoc protocols DIS HLA Web Services