MIL-STD-187-721 Interoperability And Performance Standard For Advanced Adaptive Hf RadioThe purpose of this document is to describe the technical parameters for adaptive high frequency HF radio that are more advanced than those described in MIL-STD-188-141. The advanced technology contained in this standard will guide the planning of military adaptive HF radio network technology into the 21st century. To fully understand and utilize this document, it is necessary to refer to portions of MIL-STD-188-141.

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MIL-STD-187-721D

4               4            4            4               4

7                           4               4            4         4             4

Channel

Designator

SINAD         PC             AI          SD             EFI

20                                   4               4          4            4                 4

FIGURE 14.  Channel quality measure report formats.

When a DTM is used to carry ALQA reports, the reports shall be packed bit-by-bit into the 21-bit data fields without aligning each report with the start of a new word.

When the reports do not fill the final ALE word, the remaining bits after the last report shall be filled with 0's.  The DBM data block shall be likewise filled with packed reports, with the length field set to indicate the length of reports.

5.5.3.5  Link performance measure reports.

Link performance measure reports shall use the link performance measure report CMD word as shown on figure 15.  The Control and Epoch fields shall be encoded as described above for link performance measure requests.  The D bit shall be set to 1 to indicate a data link performance measure report, or to 0 to indicate a voice link performance measure report.  The link performance measure report field shall contain the percentage of time that the link performance

equaled or exceeded the threshold specified for the indicated link performance measure on the link between the requesting and reporting stations, encoded in accordance with table XVI.

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