1. SWR Use Case Modeling
Francis Bordeleau (Mercury Computer Systems/Carleton University)
Francois-Xavier Lebas (Thales)

2. Usage of Statecharts and Sequence Diagram at the Use Case level
Use statecharts at the use case level to give a high-level global overview of system behavior
Use sequence diagrams to give an user-system interaction-based view of a use case
Relationships between use case and statechart is many-to-one
Relationship between use case and sequence diagram is one-to-many (potentially one sequence diagram for each possible scenario in a use case)
Refinement between system level statechart and component statechart must be consistent
Refinement between use case (black-box) level SD and white-box SD must be consistent, and must be consistent with class definitions

3. Top level Use Case Packages
Current SWRadio spec includes
Radio System Functionality
Radio Set Functionality
HF4285 Military Waveform Example
In the new version of the SWRadio specification, they will constitute three different packages
Relationships between the three packages will be explicit
Radio System Package describes the global use cases/scenarios of a SWRadio system
Radio Set Package describes the main use cases/scenarios of a radio set. This is the main focus of the current specification
HF4285 Military Waveform is used as an example to illustrate and validate the general SWRadio use cases and scenarios described in the Radio Set and Radio System Packages
We propose to promote the first two packages (Radio System Package and Radio Set Package) to the main part of the document and put the HF4285 Military Waveform in an appendix.

4. Main Radio System Main Use Cases
Purpose
Clarify end-users needs
Delineates what is addressed at lower levels
Proposed Use Cases
Operational Use
System Management
Configure
Deploy
Diagnose

5. Radio Set Main Actors
Give an overall actor diagram that describes the relationships between the main system actors
Define the main actors using a template that provides
Actor description
List of system functionalities (use cases) in which the actor is involved
For each functionality, the role of the actor in the system execution of that functionality

6. Radio Set Sub-Packages
Operational
Control
Startup
Shutdown
Configure
Replace Unit
Maintenance
Log related use cases
Support
Security?
Security and Manage Security?

7. Main Radio Set Operational Use Cases
Reception (Rx)
Transmission (Tx)
Configure
Configure Software
Configure Radio Set
Download
Different types of download?

8. RX Use Case Description

9. TX Use Case Description

10. Channel Configuration