ISO/IEC 4005-4:2023

INTERNATIONAL ISO/IEC
STANDARD 4005-4
First edition
2023-03
Telecommunications and information
exchange between systems —
Unmanned aircraft area network
(UAAN) —
Part 4:
Physical and data link protocols for
video communication
Télécommunications et échange d'information entre systèmes —
Réseau de zone de drones (Unmanned aircraft area network -
UAAN) —
Partie 4: Protocoles de liaison de données et physiques pour la
communication vidéo
Reference number
© ISO/IEC 2023
© ISO/IEC 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
© ISO/IEC 2023 – All rights reserved

Contents Page
Foreword .v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 1
5 Physical layer . 2
5.1 Channel and frame structure for data channel . 2
5.1.1 The number of data channels and bandwidth . 2
5.1.2 Frame structure . 3
5.1.3 Slot transmit time mask . . 3
5.1.4 Sub channels . 4
5.1.5 Dedicated subchannels . 5
5.2 Channel and frame structure for tone channel . 5
5.2.1 General . 5
5.2.2 Slot transmit power . 5
5.3 Encoding procedure . 5
5.3.1 CRC encoding . 6
5.3.2 Turbo encoding . 6
5.3.3 Rate matching . 9
5.3.4 Interleaving . 9
5.3.5 Modulation mapping . 9
5.3.6 Burst mapping . 9
5.3.7 Pulse mapping . 11
5.4 Physical layer procedure .12
5.4.1 Synchronization .12
5.4.2 Subchannel power .12
5.4.3 Measurements .12
5.4.4 Coexistence operation .12
6 Data link layer .13
6.1 General .13
6.2 Channel mapping and measurements. 14
6.2.1 General . 14
6.2.2 Mapping of communication resources and subslot sets. 14
6.2.3 Interference power calculation . 15
6.2.4 Subchannel map . 16
6.3 Subchannel negotiation for allocation . 16
6.3.1 General . 16
6.3.2 Subchannel negotiation using shared channel . 20
6.3.3 Subchannel negotiation using dedicated slot . 23
6.3.4 Subchannel negotiation using CSCH . 24
6.4 Subchannel allocation and generated link confirmation . 25
6.4.1 General . 25
6.4.2 Subchannel resource allocation competition . 26
6.4.3 Generated link confirmation . 27
6.4.4 Broadcasting video subchannel (VSCH) information being allocated or
occupied .28
6.5 Subchannel occupation and collision management .29
6.5.1 General .29
6.5.2 Power control in occupation stage .29
6.5.3 Subchannel occupation and return method.30
6.5.4 Collision tone transmission and collision management .30
iii
© ISO/IEC 2023 – All rights reserved

6.5.5 Parsing block for video channel .30
6.6 Reallocation . . 30
6.6.1 General .30
6.6.2 Reallocation decision . 31
6.6.3 Subchannel reallocation procedure . 32
6.7 Data exchange . 33
6.7.1 General . 33
6.7.2 Data packet format .34
6.8 Synchronization . 35
6.9 Data link layer security . 35
6.10 Interface with upper layer. 37
6.10.1 General . 37
6.10.2 Initialization interface. 37
6.10.3 Dynamic interface . 42
6.11 Interface with other communication layer .46
6.11.1 General .46
6.11.2 Interface with SC .46
6.11.3 Interface with CC . 47
Annex A (normative) Turbo internal interleaver table .50
iv
© ISO/IEC 2023 – All rights reserved

Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that are
members of ISO or IEC participate in the development of International Standards through technical
committees established by the respective organization to deal with particular fields of technical
activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international
organizati
...