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Technical Provisions for Mode S Services and Extended Squitter

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Appendix A A-109<br />

A.4. MODE S BROADCAST PROTOCOLS<br />

A.4.1 BROADCAST CHANNEL NUMBER ALLOCATIONS<br />

The broadcast identifiers shall be represented as a two-digit hexadecimal number, e.g. “XX16”.<br />

Note.— There are 255 broadcast identifiers available on both the uplink <strong>and</strong> downlink. Broadcast identifier<br />

numbers have been assigned <strong>for</strong> some applications (see Annex 10, Volume III, Part 1, Chapter 5, Table 5-23).<br />

The data <strong>for</strong>mats <strong>for</strong> the data link capability report <strong>and</strong> <strong>for</strong> aircraft identification together with the assignment of the<br />

broadcast identifiers shall be as defined in this document <strong>and</strong> Annex 10, Volumes III <strong>and</strong> IV, respectively.<br />

A.4.2 UPLINK BROADCAST IDENTIFIERS<br />

The following sections are numbered A.4.2.X, where “X” is the decimal equivalent of the uplink broadcast identifier<br />

number. This is done to allow definitions of the hitherto undefined <strong>for</strong>mats to be inserted without affecting the paragraph<br />

numbering.<br />

(Reserved <strong>for</strong> differential GNSS correction)<br />

A.4.2.1 UPLINK BROADCAST IDENTIFIER 0116<br />

The description of this identifier has not yet been developed.<br />

These identifiers have not been assigned.<br />

(Not valid)<br />

DRAFT - Working Paper ASP TSGWP11-01 <strong>for</strong> review by the TSG during the meeting in June 2011 in Paris<br />

A.4.2.2 TO A.4.2.47 UPLINK BROADCAST IDENTIFIERS 0216 TO 2F16<br />

Draft<br />

A.4.2.48 UPLINK BROADCAST IDENTIFIER 3016<br />

A.4.2.49 UPLINK BROADCAST IDENTIFIERS 3116<br />

(Reserved <strong>for</strong> RA broadcast (see Annex 10, Volume IV, §4.3.8.4.2.3.4)).<br />

A.4.2.50 UPLINK BROADCAST IDENTIFIERS 3216<br />

(Reserved <strong>for</strong> ACAS (see Annex 10, Volume IV, §4.3.8.4.2.3.3)).<br />

These identifiers have not been assigned.<br />

A.4.2.51 TO A.4.2.255 UPLINK BROADCAST IDENTIFIERS 3316 TO FF16<br />

DRAFT - Working Paper ASP TSGWP11-01 <strong>for</strong> review by the TSG during the meeting in June 2011 in Paris

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