INVITATION TO JOIN THE Link 16 BALLOT GROUP:  This announcement serves as an invitation to all SISO members to join the Link 16 product ballot group and also serves an invitation to other interested individuals to join SISO to participate in the ballot group for the Link 16 (SISO-STD-002- DRAFT) 


TITLE:  Standard For Link 16 Simulation 

SCOPE:  This standard applies only to Link 16/JTIDS/MIDS. It does not address Link 16 over Satellite Communications (SATCOM). In developing a protocol for simulating Link 16 in Distributed Interactive Simulation (DIS) and High Level Architecture (HLA), it is recognized that there are widely varying requirements for achieving fidelity among different users. This protocol attempts to establish procedures that may be used by the vast majority of users, by establishing discrete, scalable, interoperable levels of fidelity for different users. This, in turn, allows for low cost initial implementation with a path toward upgrading to detailed Link 16 emulation as requirements evolve.

The DIS simulation protocol for Link 16 is described in terms of the established DIS Transmitter and Signal Protocol Data Units (PDUs). There has been no change to the Transmitter or Signal PDUs described in the DIS standard, IEEE Std 1278.1. Link 16 specific enumerations have been created to populate the standard fields and records. The implementation of Link 16 exploits the fact that both these PDUs are variable length. In the case of the Transmitter PDUs, this protocol sets forth how the variable length Modulation Parameters field must be populated. In the case of the Signal PDU, Link 16 specific information is relegated to the variable length Data field.

The Link 16 HLA specification is defined in the form of a Base Object Model (BOM), in compliance with SISO-STD-003. For actual exchange within an HLA federation, it should be incorporated into a Federation Object Model (FOM); in particular, the Real-time Platform Reference (RPR) FOM. Furthermore, a mapping is provided between the DIS PDU implementations and the corresponding HLA objects and interactions. 

PURPOSE:  There are immediate operational requirements for existing military simulations to exchange Link 16 data using a single interoperable standard. Several protocols have evolved to satisfy specific needs. The NATO STANAG 5602 Standard Interface for Multiple Platform Link Evaluation (SIMPLE) Link 16 standard is one such protocol. As military distributed simulation evolves further in mission scale and complexity, tactical datalink implementations need to interoperate. 

This revision of the Link 16 simulation standard includes the following updates:
- Updated standard to the latest template.

Incorporated several PCRs including:

-- Updated for newer versions of DIS and HLA standards
-- Updated for newer versions of MIL-STDs and STANAGs
-- Use bit stream versus byte-swapping in Signal PDU Data field
-- Allow use of Network Synchronization ID field in Transmitter PDU to model separate Link 16 nets
-- Clarified that Data Length field in Signal PDU includes the padding
-- Clarified that multiple J-messages are allowed in a single Signal PDU
-- Clarified that Transmitter PDU bracketing is optional
-- Updated HLA sections and BOM IAW SISO-STD-003  

BALLOT GROUP RESPONSIBILITIES:  By joining the ballot group, an individual is committing to conducting a thorough review of the product, completing the review in the required time period, and submitting the written ballot by the due date. 

Individuals joining the ballot group shall provide the following required information:

-- SISO Member Number
-- Name
-- Organization
-- Email Address
-- Phone Number 

Representation:  (select one)

-- Commercial
-- Government
-- Academic 

Interest:  (select one).

-- User:  An individual who will use the product as part of his/her job.
-- Developer:  An individual (or his/her organization) who will build products that support, require, or produce the proposed product.
-- General Interest:  An individual who does not plan to use the proposed product, but is interested because of potential future work, impact on other SISO Products, or impact on research.  This classification also includes an individual who is unsure of his/her specific interest. 

Please see the Balloted Products Development and Support Process for an explanation of Representation and Interest: 

DEADLINE:  The invitation to join the ballot group is open for 30 days: 




Go directly to the Link 16 Ballot Group Registration Form

(Note: Although the web-page can be viewed by anyone, the link to the registration form is hidden until SISO members log into the website.) 

Or follow this process:

1. Go to
2. Log in
3. Select Standards Activities
4. Select Development Groups
6. Scroll down until you find the Invitation to Ballot
7. Select View Ballot Details and Ballot Group Registration Form
8. Follow instructions 

To join the Ballot Group, you MUST be a current SISO Member. If you are not a SISO member, go here to read about how you can become one: SISO Membership 

***** QUESTIONS *****

If you should have any questions about this invitation, please contact:

Joe Sorroche
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Steve Weiss
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Best regards,

Patrick T. Rowe
Executive Director
Simulation Interoperability Standards Organization (SISO)
(703) 402-9269 (cell)

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