ObjectOriented Design of an Embedded Communication System in UML

1
Object-Oriented Design of an Embedded
Communication System in UML

• Danny Patel
• EE249 Project

2
Introduction

• Data Communication Protocols
• Legal Sequences Process can exhibit
• Programming languages
• Object-Oriented
• Goals
• Complete Description
• Well-understood
• Reusable

3
Outline of Talk

• What is UML?
• What are Object-Oriented Properties?
• OO Protocol Design
• UML Specification of Intercom
• Conclusions/Remarks

4
UML

• Graphical Language for Object-Oriented Model
• Booch, Rumbaugh, Jacobson
• Class Diagrams - Structure
• Relationships (association, aggregation,
  inheritance)
• Sequence Diagrams (good for message passing
  protocols)
• State Charts
• Use Cases (describe purpose)

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Object-Oriented Properties

• Data Encapsulation/Information Hiding
• Message Passing
• Inheritance
• Object-Oriented Analysis

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OO Protocol Design

• Patterns
• Generalization approach to a solution
• Interface Pattern Douglass, Cena et al.
• ATM OO pattern Yan et al.
• Supports point-to-multipoint connection
• 4 entities
• interface, connection, state, message

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UML-Intercom

• High-level Specification Class Diagram
• Logical Partitioning
• Interface Meta-Model

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Top Level Intercom
9
Virtual Channel-Actual Channel
Radio
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UML-Intercom

• Message Sequence Charts
• Informal, yet helpful
• State Charts Cena et al.

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Message Sequence Charts
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Conclusions

• Well Understood - Mostly
• Block Composition not well understood
• Inheritance of relationships not well understood
• Consistency - adequate
• Reusable - unproven

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Bibliography

• 1 Truman, Tom. A Methodology for the Design
  and Implementation of Communication Protocols for
  Embedded Wireless Systems. Ph.D thesis,
  Berkeley, UC Berkeley 1998
• 2 Booch et al. The Unified Modeling Language
  User Guide. Berkeley, California Addison Wesley
  Longman, 1998.
• 3 Gajski et al. Specification and Design of
  Embedded Systems. Englewood, New Jersey PTR
  Prentice Hall, 1994.
• 4 Douglass, B. Real-Time UML Developing
  Efficient Objects For Embedded Systems. Berkeley,
  California Addison Wesley Longman, 1998
• 5 Yan et al. An Object-Oriented Model for
  Protocol Design IEEE Comput. Soc, 1998. p.12-21

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Bibliography

• 6 Cena et al. An Object Oriented Model for
  the FIP protocol. Proceedings of IECON'94 - 20th
  Annual Conference of IEEE Industrial Electronics,
  Bologna, Italy, 5-9 Sept. 1994.) New York, NY,
  USA IEEE, 1994. p.1214-19 vol.2.
• 7 Alexander al., A Pattern Language. New York
  Oxford University Press 1977
• 8 Starr and Lee, UML for Real-Time, Embedded
  Systems. Presentation slides UC Santa Clara ,Nov
  1998

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Object-Oriented Analysis