Embedding Command and Control, Information Assurance, and … · 2017-05-18 · Embedding Command...

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Embedding Command and Control, Information Assurance, and Other Decision Points in Model-Based Systems Engineering (MBSE) Analyses

Steven H. Dam, Ph.D., ESEP President, SPEC Innovations 571-485-7805 [email protected] October 24, 2012

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Overview

What is the Problem with C2/IA Modeling?

LML Sequencing

Tool Needs

Summary

2


WHAT IS THE PROBLEM WITH

C2/IA MODELING?

3


How Do People Usually Decompose Systems?

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Enterprise Services

Warfighting System

Weapons

Sensors

Command and Control

Discovery

Collaboration

IA/Security

… …

What’s wrong with these pictures?


What’s Wrong with This? • By beginning with separating out

command and control, or information assurance at the top level, it becomes harder to build in these essential capabilities into the other components of the system

• The interfaces become complex, speed of execution is reduced, and “holes” in the system become common

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How Can We Do It Better?

• Do not decompose C2 and IA/Security at the top level

• Let those aspects of control come out of the functional analysis

• Then identify and allocate those functions to the C2 participants and organizations

• But the current languages do not help the situation, because they do not capture all the decision points explicitly as functions

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Example: SYSML

Source: http://www.mel.nist.gov/msidlibrary/doc/sysmlactivity.pdf

How are decisions captured by these diagrams?

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Decision Points

http://www.mel.nist.gov/msidlibrary/doc/sysmlactivity.pdf


LIFECYCLE MODELING

LANGUAGE SEQUENCING

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LML Sequencing

Action A Action B

Action A

Action B

Action C

Condition 1

Condition 2

Action A

Action B

LOOP

Action A

Action C

Range

Range (e.g.) 1 to n (iterate)

Until r < z (loop)

PARALLEL

SEQUENTIAL

SELECTION

SY

NC

OR

Action C (Exit Criteria) L

OO

P

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No constructs – only special types of Actions – ones that enable the modeling of command and control/ information assurance to capture the critical decisions in your model

Coordinated by Asset C


OR

LML Action Diagram Captures Behavior

Which path?

Action in Parallel

Action

Start End

Trigger

SY

NC

Input/Output 2 Synchronize Information

1.2

1.3

1.7

Action

1.1 Optional Action 2 in Loop

1.6

External Input

External Output

Input/Output 3

LO

OP

Exit Criteria

1.5

Optional Action 1

1.4

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Input/Output 1


Example: Sync Execution Logic

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Action Control Line

No trigger: Action enabled and will execute

Action Diagram Timeline

Action Duration = x sec

0 sec x sec

Action Control Line

With trigger: Action enabled, but will not execute until trigger received

Action Duration = x sec

y sec

Trigger Trigger takes y sec before received by Action

wait

0 sec y + x sec


Execution Logic – Concurrency No Trigger; No Coordination Action

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Action A

No trigger: Action A enabled and will execute; Asset A performs Action A


Action A Duration = x sec

0 sec y + x sec

synch

Action B

coordinated by Asset A

Duration = y sec

y sec

Action B

Start to Start (SS) between A and B


Execution Logic – Concurrency With Trigger; No Coordination Action

13

Action A

Trigger: Action A enabled, but must wait to execute; Asset A performs Action A


Action A Duration = x sec

0 sec y + x sec

synch

Action B


Duration = y sec

y sec

Action B

Trigger

wait

Finish to Start (FS) between B and A


Execution Logic – Concurrency No Trigger; With Coordination Action

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Action A

No trigger: Action C enabled and will execute; Asset A performs Action A and Action C


Action C

Duration = x sec

0 sec z + x sec

synch

Action B


Duration = y sec

y sec

Action B Action C

Action A

Duration = z sec z sec

z > y

Finish to Start (FS) between C and A


Execution Logic – Concurrency No Trigger; With Coordination Action

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Action A



Action B

Duration = x sec

0 sec z + x sec

synch

Action B


Duration = y sec

y sec

Action C Action C

Action A


y > z

Finish to Start (FS) between C and A


Execution Logic – Concurrency With Trigger; With Coordination Action

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Action A



Action B

Duration = x sec

0 sec y + x sec

synch

Action B


Duration = y sec

y sec

Action C Action C

Action A


y > z

Trigger

wait

Finish to Start (FS) between B and A


Problem with not including synch

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Request Information

Server

Provide Information

Inte

rfa

ce

Client

Physical View Functional View

Information Request

Information

Deadlock occurs; no IA or C2 functionality


Problem with not including synch

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Request Information

Provide Information

Functional View

Information Request

Information

Deadlock Relieved; IA functionality identified

Validate/ Authorize Request

Authorization

coordinated by IA Asset


TOOL NEEDS

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Innoslate®

• Innoslate 1.0 meets most of the LML Action diagram requirements

– Synch is currently missing, but expected soon

• Since LML is designed as an open standard, we hope other tool vendors consider adding the Action diagram to their tools as well

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FireSAT Design Reference Mission

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Decision Points


Simulation

• Integrated simulator (both continuous and discrete event) are needed for ensuring executability of design and operational procedures

• Innoslate has a first cut discrete event simulator built-in, but more work is needed

• Linking to other simulation tools (e.f. Satellite Toolkit) may be feasible in the future

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Innoslate Simulation of FireSAT Design Reference Model

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Cost and Resources can also be captured in this simulation; each decision point can also be prompted for a user response


SUMMARY

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Summary

• The problem with modeling C2, IA, Security and other decision points

• LML helps force the capturing of decision points

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Way Ahead

• Further work on modeling decision points of all kinds is needed to ensure that that information is captured as part of the design and analysis

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Embedding Command and Control, Information Assurance, and … · 2017-05-18 · Embedding Command...

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