SISO Transfer Control Study Group Briefing Fall 2004

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SISOTransfer Control Study GroupBriefingFall
2004
Prepared by fhill_at_sdslink.com
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Transfer Control Study Group

• SG Leaders
• Chair Frank Hill Vice-Chair Pat Merlet
• Purpose
• To correct present IEEE 1278.1a DIS design
  deficiencies
• To review and analyze HLA Transfer Ownership
• To determine changes to the HLA RPR FOM and GRIM
• Product
• Draft Changes to 1278.1a and the DIS Enumeration
  Document will be submitted to the new DIS PDG.
• Schedule
• Spring 2004 SIW
• Fall 2004 SIW

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Transfer Control SG
Results

• Prepared draft IEEE 1278.1a DIS changes and
  achieved initial transfer control community
  consensus as follows
• Para. 4.5.8.3 Entity handover completely revised.
• Annex D Transfer Control Design Guidelines
  added.
• Para. 5.2 Basic Data Types and Records
  developed.
• Revisions to other paragraphs as applicable to
  the new design.
• DIS Enumeration document new enumerations.
• Draft changes were prepared to expedite the
  process since there was good community
  representation and key study group members were
  experienced in performing system engineering
  analysis and preparing standards.
• Prepared an Interim Report covering activities to
  date.

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Transfer Control SG

• Activities
• The TC Study Group has held weekly telecons over
  the last year.
• A TC Study Group Reflector and Document Library
  is being maintained.
• Participation by experienced DIS software
  developers and knowledgeable joint training
  exercise integrators.
• Representatives present from all known DIS
  transfer control software projects that have been
  completed or are in development.
• Systems analysis and engineering studies
  performed.
• Draft HLA RPR FOM and GRIM changes prepared.
• Initial review of HLA transfer ownership issues.

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Transfer Control Projects

• The following DIS transfer control projects are
  in development or planned within the near future
  that use the new proposed standard
• STAGE (implemented) eNGENUITY Technologies Inc,
  Canada
• AWSIM (initial implementation), AFAMS, Raytheon,
  U.S.
• NGTS (initial implementation), AFAMS, Raytheon,
  U.S.
• DMOC DIS Filter Gateway (under development), LMC,
  U.S.
• Will allow legacy virtual simulators to be
  transfer control capable without requiring
  modifications to their simulator.
• Thales Training Systems (Planned) Great Britain

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New Transfer Control DesignOverview

• IEEE 1278.1a
• New replacement for paragraph 4.5.8.3 Entity
  Handover
• Other changes to IEEE 1278.1a
• Changes to DIS Enumeration Document
• Message Sequence
• Push
• Pull
• Record Definitions

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New Transfer Control Design - Push Sequence
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New Transfer Control DesignPull Message Sequence
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New Record Definitions
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Munition Record Example
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New Transfer Control DesignOwnership Information

• Ownership information restored
• Transferred Entity Indicator (1-bit) in New PDU
  Status Field of Entity State PDU. PDU Status
  Field uses the present 16-bit padding field)
• Ownership Report (Event Report PDU)
• Ownership Request and Response
• (Data Query PDU and Data PDU)
• Backwards compatible to max extent possible.

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New Transfer Control DesignKey Concepts

• Local/Remote Entity Determination.
• Provides for Auto and Manual Transfer in various
  combinations.
• New Auto and Manual Timers.
• Mutual Transfers (i.e., swap) deleted.
• HLA RPR FOM Draft Updates.

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Native HLA

• Native HLA Transfers have been implemented.
• Initial briefing on JTLS-JCATS and CBS-JCATS
  transfer ownership.
• Known Issues
• Attributes can become ownerless.
• No way to transfer ownership to or from a
  specific federate.

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Remaining Tasks

• Provide proposed IEEE 1278.1a updates to new DIS
  PDG and work with them.
• Look at Native HLA Transfer Ownership in more
  detail.
• Complete review of HLA RPR FOM Changes.
• Continue to support developers through the
  Transfer Control Help Desk.
• Complete Sensor, Location, Formation Record
  designs.
• Make changes based on implementation experience.
• Complete DIS Ownership Conflict resolution.
• Complete DIS Sim Management PDU Review.
• Includes possible new Relinquish Ownership TCR
  PDU.

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Transfer Control Resources

• SISO TC Study Group Reflector
• Messages
• Telecon announcements.
• SISO TC Document Library
• Transfer Control Guidance Document.
• includes latest version of changes to IEEE
  1278.1a and the DIS Enumeration Document.
• Draft Final Report
• Transfer Control Telecon Minutes

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Ownership Conflict

• Decide on need for automatic vs manual conflict
  detection and resolution.
• If manual only option- agree on rules.
• prepared.
• If Automatic plus manual option agree on rules
• Option 1 Transfer Status indicator
• Option 2 Transfer Termination timer
• Option 3 Lowest federate gets it
• Option 4 Give up to AF

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Sensor Record

• Option 1 Sensor Type Source and Sensor Type
• Option 2 Sensor Type Source and Sensor Name
• Option 3 Sensor Name Source and Type Name
• Option 4 Sensor Name Source and Sensor Name