Publication: Magyar Közlöny
Issue: MK-2007-70 (Year: 2007, Number: 70)
Era: 2004-2010
Section: Melléklet a 2007. évi XLVI. törvényhez
Paragraph Index: 4463

b) all bits of the downlink message have been processed. Note 1.— This structure and protocol for MSP downlink service requests allow for future expansion and use by other MSP data link services. Note 2.— The principal and alternate TIS II codes in the TIS process (see 3.2.2, Uplink MSP Channel 2) are set to the “none” state when either a TSCR or TSDR is generated. Header DIN 1 DIN 2 DIN 3 DIN 4 DIN 5 DIN 6 8 bits 8 bits 8 bits 8 bits 8 bits 8 bits 8 bits 2007/70/II. szám Annex 10 — Aeronautical Telecommunications Volume III 5-150 28/11/02 No. 77 4.3.2.2.1 TCSR format This TIS Comm-B downlink message shall be generated when the pilot requests the initiation of TIS service. The TSCR message shall be generated at the same time as the MSP capability report bit for TIS is set to “ONE”. A TSCR shall be identified by a DIN value of 1. The TSCR shall be defined as a Comm-B broadcast message so that any Mode S ground interrogator capable of supporting TIS can respond to it. 4.3.2.2.2 TSDR format This TIS Comm-B broadcast downlink message shall be generated when the pilot requests termination of TIS service. The TSDR message shall be generated at the same time as the MSP capability report bit for TIS is set to “ZERO”. A TDSR shall be identified by a DIN value of 2. The TDSR shall be defined as a Comm-B broadcast message so that any Mode S interrogator supporting TIS can respond to it. 4.3.3 TO 4.3.15 DOWNLINK BROADCAST IDENTIFIERS 0316 to 0F16 These identifiers have not been assigned. 4.3.16 DOWNLINK BROADCAST IDENTIFIER 1016 (Data link capability report) See Table 2-16. 4.3.17 TO 4.3.31 DOWNLINK BROADCAST IDENTIFIERS 1116 to 1F16 These identifiers have not been assigned. 4.3.32 DOWNLINK BROADCAST IDENTIFIER 2016 (Aircraft identification) See Table 2-32. 4.3.33 TO 4.3.253 DOWNLINK BROADCAST IDENTIFIERS 2116 to FD16 These identifiers have not been assigned. 4.3.254 DOWNLINK BROADCAST IDENTIFIER FE16 (Reserved for update request) See Chapter 5. 4.3.255 DOWNLINK BROADCAST IDENTIFIER FF16 (Reserved for search request) See Chapter 5. 2007/70/II. szám ANNEX 10 — VOLUME III 1/11/01 No. 76 CHAPTER 6. VHF AIR-GROUND DIGITAL LINK (VDL) 6.1 DEFINITIONS AND SYSTEM CAPABILITIES Note 1.— The very high frequency (VHF) digital link (VDL) Mode 2 and the VDL Mode 4 provide data service capabilities. The VDL Mode 3 provides both voice and data service capabilities. The data capability is a constituent mobile subnetwork of the aeronautical telecommunication network (ATN). In addition, the VDL may provide non-ATN functions. Standards and Recommended Practices (SARPs) for the VDL are defined and referenced below. Note 2.— Additional information on VDL is contained in the Manuals on VDL Mode 2, VDL Mode 3 and VDL Mode 4 Technical Specifications. Note 3.— Sections 6.1.2 to 6.8.2 contain Standards and Recommended Practices for VDL Modes 2 and 3. Section 6.9 contains Standards and Recommended Practices for VDL Mode 4. 6.1.1 Definitions Automatic dependent surveillance-broadcast (ADS-B). A surveillance technique in which aircraft automatically provide, via a broadcast mode data link, data derived from on-board navigation and position-fixing systems, including aircraft identification, four-dimensional position, and additional data as appropriate. Broadcast. A transmission of information relating to air navigation that is not addressed to a specific station or stations. Burst. A time-defined, contiguous set of one or more related signal units which may convey user information and protocols, signalling, and any necessary preamble. Current slot. The slot in which a received transmission begins. Data circuit-terminating equipment (DCE). A DCE is a network provider equipment used to facilitate communications between DTEs. Data link entity (DLE). A protocol state machine capable of setting up and managing a single data link connection. Data link service (DLS) sublayer. The sublayer that resides above the MAC sublayer. For VDL Mode 4, the DLS sublayer resides above the VSS sublayer. The DLS manages the transmit queue, creates and destroys DLEs for connection-oriented communications, provides facilities for the LME to manage the DLS, and provides facilities for connectionless communications. Data terminal equipment (DTE). A DTE is an endpoint of a subnetwork connection. Extended Golay Code. An error correction code capable of correcting multiple bit errors. Frame. The link layer frame is composed of a sequence of address, control, FCS and information fields. For VDL Mode 2, these fields are bracketed by opening and closing flag sequences, and a frame may or may not include a variable-length information field. Gaussian filtered frequency shift keying (GFSK). A continuous-phase, frequency shift keying technique using two tones and a Gaussian pulse shape filter. Global signalling channel (GSC). A channel available on a world-wide basis which provides for communication control. Link. A link connects an aircraft DLE and a ground DLE and is uniquely specified by the combination of aircraft DLS address and the ground DLS address. A different subnetwork entity resides above every link endpoint. Link layer. The layer that lies immediately above the physical layer in the Open Systems Interconnection protocol model. The link layer provides for the reliable transfer of information across the physical media. It is subdivided into the data link sublayer and the media access control sublayer. Link management entity (LME). A protocol state machine capable of acquiring, establishing and maintaining a connection to a single peer system. An LME establishes data link and subnetwork connections, “hands-off” those connections, and manages the media access control sublayer and physical layer. An aircraft LME tracks how well it can communicate with the ground stations of a single ground system. An aircraft VME instantiates an LME for each ground station that it monitors. Similarly, the ground VME instantiates an LME for each aircraft that it monitors. An LME is deleted when communication with the peer system is no longer viable. M burst. A management channel data block of bits used in VDL Mode 3. This burst contains signalling information needed for media access and link status monitoring. 25/11/04 No. 79 2007/70/II. szám 2007/70/II. szám 2007/70/II. szám 2007/70/II. szám 2007/70/II. szám 2007/70/II. szám 2007/70/II. szám 2007/70/II. szám 2007/70/II. szám 2007/70/II. szám 2007/70/II. szám 2007/70/II. szám Part I Annex 10 — Aeronautical Telecommunications 1/11/01 No. 76 6.7.2 VDL Mode 3 SNDCF 6.7.2.1 The VDL Mode 3 shall support one or more of the defined SNDCFs. The first is the standard ISO 8208 SNDCF as defined in Doc 9705. This is a connection-oriented SNDCF. The second type of SNDCF supported by VDL Mode 3 is denoted frame-based SNDCF. The details of this connectionless oriented SNDCF are contained in the Manual on VDL Mode 3 Technical Specifications, including network layer interface, support for broadcast and unicast network packets, and ATN router support. Note.— The framed-based SNDCF is termed such because it uses the VDL Mode 3 frames without the need for an additional protocol (viz. ISO 8208 SNDCF) to transfer network packets. The frame-based SNDCF achieves independence from the network protocol by identifying the payload of each frame. Upon receipt of a frame, the payload is examined and control is passed to the protocol identified. 6.8 VOICE UNIT FOR MODE 3 6.8.1 Services 6.8.1.1 The voice unit shall provide for a simplex, “push-to-talk” audio and signalling interface between the user and the VDL. Two separate mutually exclusive voice circuit types shall be supported:

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