Publication: Magyar Közlöny
Issue: MK-2007-70 (Year: 2007, Number: 70)
Era: 2004-2010
Section: Melléklet a 2007. évi XLVI. törvényhez
Paragraph Index: 4505

e) train the equalizer. 11.3.2.4.4 SYNCHRONIZATION Each HFDL aircraft station sub-system shall synchronize its slot timing to that of its corresponding ground station with respect to the reception time of the last received SPDU. 11.3.2.4.5 SPECIFIED PACKET ERROR RATE PERFORMANCE The number of HFDL media access protocol data units (MPDUs) received with one or more bit errors shall not exceed 5 per cent of the total number of MPDUs received, when using a 1.8 second interleaver and under the signal-in-space conditions shown in Table 11-3. Recommendation.— The number of HFDL MPDUs received with one or more bit errors should not exceed 5 per cent of the total number of MPDUs received, when using a 1.8 second interleaver under the conditions shown in Table 11-3a. 11.3.3 Link layer Note.— Details on link layer functions are contained in the Manual on HF Data Link (Doc 9741). The link layer shall provide control functions for the physical layer, link management and data service protocols. 11.3.3.1 CONTROL FUNCTIONS The link layer shall pass commands for frequency tuning, transmitter keying and transmitter/receiver switching to the physical layer. 11.3.3.2 LINK MANAGEMENT The link layer shall manage TDMA slot assignments, log-on and log-off procedures, ground station and aircraft station TDMA synchronization, and other functions necessary, taking into account message priority, for the establishment and maintenance of communications. 11.3.3.3 DATA SERVICE PROTOCOLS The link layer shall support a reliable link service (RLS) protocol and a direct link service (DLS) protocol. 11.3.3.3.1 RLS The RLS protocol shall be used to exchange acknowledged user data packets between aircraft and ground peer link layers. 11.3.3.3.2 DLS The DLS protocol shall be used to broadcast unsegmented uplink high frequency network protocol data units (HFNPDUs) and other HFNPDUs not requiring automatic retransmission by the link layer. 11.3.4 Subnetwork layer Note.— Details on subnetwork layer protocols and services are contained in the Manual on HF Data Link (Doc 9741). 338E 27/11/03 No. 78 2007/70/II. szám Annex 10 — Aeronautical Telecommunications Volume III 5/11/95 4/11/99 No. 74 11.3.4.1 PACKET DATA The HFDL subnetwork layer in the HFDL aircraft station sub-system and HFDL ground station sub-system shall provide connection-oriented packet data service by establishing subnetwork connections between subnetwork service users. 11.3.4.2 CONNECTIVITY NOTIFICATION SERVICE The HFDL subnetwork layer in the HFDL aircraft station sub-system shall provide the additional connectivity notification service by sending connectivity notification event messages to the attached ATN router. 11.3.4.2.1 CONNECTIVITY NOTIFICATION EVENT MESSAGES The connectivity notification service shall send connectivity notification event messages to the attached ATN router through the subnetwork access function. 11.3.4.3 HFDL SUBNETWORK LAYER FUNCTIONS The HFDL subnetwork layer in both the HFDL aircraft station sub-system and HFDL ground station sub-system shall include the following three functions:

Source: https://magyarkozlony.hu/hivatalos-lapok/7e70cec03f34e3c2efd8610b865b65591eafd701/dokumentumok/a55dc160549d57fa4db0035e37c6a6a98dd1a0b9/letoltes