ETSI EN 301 842-6

bonkburpsNetworking and Communications

Oct 23, 2013 (3 years and 5 months ago)

142 views




ETSI EN 301 842
-
6

V1.1.1

(2006
-
01
)


European Standard (Telecommunications series)

Electromagnetic compatibility

and Radio spectrum Matters (ERM);

VHF air
-
ground Digital Link (VDL) Mode 4 radio equipment;

Technical characteristics and methods
of measurement

for ground
-
based equipment;

Part 6
: Harmonized EN covering essential requirements

of article 3.2

of the R&TTE Directive








ETSI

ETSI EN 301 842
-
6 V1.1.1 (2006
-
01)

2


Reference


Keywords

aeronautical, radio, digital, testing, VHF

Important notice

Individual copies of the present d
ocument can be downloaded from:

http://www.etsi.org

The present document may be made available in more than one electronic version or in print. In any case of existing or
perceived difference in contents between such ve
rsions, the reference version is the

Portable Document Format (PDF).
In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive
within
ETSI Secretariat.

Users of the present document should
be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
http://portal.etsi.org/tb/status/status.
asp

If you find errors in the present document, please send your comment to one of the following services:

http://portal.etsi.org/chaircor/ETSI_support.asp

Copyright Notification

No part may
be reproduced except as authorized by written permission.

The copyright and the foregoing restriction extend to reproduction in all media.


© European Telecommunications Standards Institute
2006

All rights reserved.


DECT
TM
,
PLUGTESTS
TM
and
UMTS
TM
are Trad
e Marks of ETSI registered for the benefit of its Members.

TIPHON
TM

and the
TIPHON logo

are Trade Marks currently being registered by ETSI for the benefit of its Members.
3GPP
TM
is a Trade Mark of ETSI registered for the benefit of its Members and of the 3
GPP Organizational Partners.

ETSI

650 Route des Lucioles

F
-
06921 Sophia Antipolis Cedex
-

FRANCE


Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16


Si ret N° 348 623 562 00017
-

NAF 742 C

Associ ati on à but non l ucrati f enregi strée à l a

Sous
-
Préfecture de G
rasse (06) N° 7803/88



ETSI

ETSI EN
301 842
-
6 V1.1.1 (2006
-
01)

3

Contents

Contents
................................
................................
................................
................................
..................
3

Intellectual Property Rights

................................
................................
................................
......................
4

Foreword

................................
................................
................................
................................
................
4

Introduction

................................
................................
................................
................................
............
5

1

Scope

................................
................................
................................
................................
............
6

2

References

................................
................................
................................
................................
.....
8

3

Definitions and abbreviations
................................
................................
................................
..........
9

3.1

Definitions

................................
................................
................................
................................
................................
............

9

3.1.1

Basic reference model definitions

................................
................................
................................
..............................

9

3.
1.2

Service conventions definitions

................................
................................
................................
................................
..

9

3.1.3

General definitions
................................
................................
................................
................................
........................

9

3.2

Abbreviations

................................
................................
................................
................................
................................
.....

14

4

General description and architecture of VDL Mode 4

................................
................................
.....

15

5

Technical requirements specifications
................................
................................
............................

16

5.1

Environmental profile

................................
................................
................................
................................
.......................

16

5.2

Conformance requirements
................................
................................
................................
................................
..............

16

5.2.1

Receiver requirements

................................
................................
................................
................................
................

16

5.2.1.1

Conducted spurious emission

................................
................................
................................
.............................

16

5.2.1.2

FM Broadcast Intermodulation
................................
................................
................................
...........................

16

5.2.1.3

In
-
band Intermodulation

................................
................................
................................
................................
......

16

5.2.1.4

Cabinet radiation

................................
................................
................................
................................
...................

16

5.2.2

Transmitter requirements

................................
................................
................................
................................
...........

16

5.2.2.1

Transmitter operating range

................................
................................
................................
................................

16

5.2.2.2

Channel Bit Rate

................................
................................
................................
................................
...................

16

5.2.2.3

Manufacturer's declared output power

................................
................................
................................
..............

16

5.2.2.4

RF power rise time

................................
................................
................................
................................
...............

17

5.2.2.5

RF power release time
................................
................................
................................
................................
..........

17

5.2.2.6

Conducted Spurious emissions
................................
................................
................................
...........................

17

5.2.2.7

Adjacent channel power

................................
................................
................................
................................
......

17

5.2.2.8

Wide
-
band noise

................................
................................
................................
................................
...................

17

5.2.2.9

Frequency Tolerance

................................
................................
................................
................................
............

17

5.2.2.10

Load VSWR capability

................................
................................
................................
................................
........

17

5.2.2.11

Cabinet radiation

................................
................................
................................
................................
...................

17

5.2.3

Transceiver requirements
................................
................................
................................
................................
...........

17

5.2.3.1

Start of transmission

................................
................................
................................
................................
.............

17

5.2.3.2

Automatic transmitter shutdown

................................
................................
................................
........................

17

5.2.3.3

System timing requirements
................................
................................
................................
................................

17

6

Testing for compliance with technical requirements

................................
................................
.......

18

6.1

Environmental conditions for testing

................................
................................
................................
.............................

18

6.2

Interpretation of the measurement results

................................
................................
................................
.....................

18

6.3

Essential radio test suites
................................
................................
................................
................................
..................

18

6.4

Other test suites
................................
................................
................................
................................
................................
..

18

Annex A (normative): HS Requirement & conformance Test specifications Table (
HS
-
RTT)

............

19

Annex B (inf
ormative): The EN title in the official languages

................................
.............................

22

Annex C (informative): Bibliography

................................
................................
................................
.

23

List of tables

................................
................................
................................
................................
.........

24

History
................................
................................
................................
................................
..................

25



ETSI

ETSI EN 301 842
-
6 V1.1.1 (2006
-
01)

4

Intellectual
Property Rights

IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for
ETSI members and non
-
members
, and can be found
in ETSI

SR

000

314:
"Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards"
, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (
http://webapp.etsi.org/IPR/home.asp
).

Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI

SR

000

314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.

Foreword

This
Harmonized European Standard (Telecommunications series) has been produced by ETSI Technical Committee
Elect
romagnetic compatibility and Radio spectrum Matters (ERM)
.

The present document is intended to become a Harmonized Standard, the reference of which will be published in the
Official Journal of the European Communities refere
ncing the Directive 1999/5/EC [
11
] of the European Parliament
and of the Council of 9 March 1999 on radio equipment and telecommunications terminal equipment and the mutual
recognition of their conformity ("the R&TTE Directive").

The present document is part

6

of a

multi
-
part series covering the VHF air
-
ground
Digital

Link (VDL) Mode 4 radio
equipment; Technical characteristics and methods of measurement for ground
-
based equipment, as identified below:

Part 1:

"EN for ground equipment";

Part 2:

"General description
and data link layer";

Part 3:

"Additional broadcast aspects";

Part 4:

"Point
-
to
-
point functions".

Part 5:

“Description of compliance with the SES 552/2004 interoperability Regulation”.

Part 6:

“Harmonized EN covering essential
requirements of

article 3.2 o
f the R&TTE Directive”.

The present document is accompanied by an equivalent airborne standard,
EN 302 842 [
10
]

parts 1 to 5
, covering the
VHF air
-
ground Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of

measurement
for airborne equipment.

Th
is

multipart

ENs is
designed to ensure that equipment
conforming with
all parts of
it

will be compatible with the
relevant ICAO VHF Digital Link (VDL) Standards and Recommended Practices (SARPs)
[
2
]
and VDL Mode 4
Technical Manual (TM)

[
1
]

part 2 and with the SES 552/2004 Regulation [
12
]
.



Proposed national transposition dates

Date of latest announcement of this EN (doa):

3 mont
hs after ETSI publication

Date of latest publication of new National Standard

or endorsement of this EN (dop/e):


6 months after doa

Date of withdrawal of any conflicting National Standard (dow):

18 months after doa



ETSI

ETSI EN 301 842
-
6 V1.1.1 (2006
-
01)

5

Introduction

The present document i
s part of a set of standards developed by ETSI and is designed to fit in a modular structure to
cover all radio and telecommunications terminal equipment within the scope of the R&TTE Directive

[
11
]
. The
modular structure is shown in
EG

201 399.

The present document states the
essential requirements

for Very High Frequency (VHF) Digital Link (VDL) Mode 4
ground
-
based radio transmitters, transceivers and receivers for air
-
ground communications operating in the
VHF band,
using Gaussian
-
filtered Frequency Shift Keying (GFSK) Modulation with 25 kHz channel spacing and capable of
tuning to any of the 25 kHz channels from 118,000 MHz to 136,975 MHz as defined in ICAO VHF Digital Link (VDL)
Standards and Recommended P
ractices (SARPs)

[
2
]
.

T
he VDL Mode 4 system provides digital communication exchanges between aircraft and ground
-
based systems and
other aircraft supporting surveillance and communication applications. The su
pported modes of communication include:



broadcast and point
-
to
-
point communication;



broadcast services including Automatic Dependent Surveillance
-

Broadcast (ADS
-
B), Traffic Information
Service
-

Broadcast (TIS
-
B) and Flight Information Service
-

Broadcas
t (FIS
-
B) capabilities;



air
-
air, air
-
to
-
ground, and ground
-
to
-
air services;



operation without ground infrastructure.

The present document
is designed to be consistent with

the specifications:



VDL Mode 4 standards produced under the auspices of the Interna
tional Civil Aviation Organization
(ICAO)

[
1
]

and

[
2
]
.



Other relevant standards as defined in clause

2.


The present document

also

defines
tests
to
determine

compliance with

essential
requirements

to

allow a
presumption

of
conformity with Article 3.2 of the RTTED []
.
.


ETSI

ETSI EN 301 842
-
6 V1.1.1 (2006
-
01)

6

1

Scope

The present document applies to
Very High Frequency (VHF) Digital Link (VDL) Mode 4 ground
-
based radio
transmitters
,
receivers
and transceivers
for air
-
ground communications operating in the VHF band, using Gaussian
-
filtered Frequency Shift Keying (GFSK) Modulation with
25

kHz channel spacing and capable of tuning to
:




either

any of

the 25 kHz channels from 118,000 MHz to 136,975 MHz as defined in ICAO VHF Digital
Link (VDL) Standards and Recommended Practices (SARPs)

[
2
]



or

any

25 kHz channel from 108,000 MHz to 117,975 MHz.

.


Manufacturers sho
uld note that in future the tuning range for the ground transceivers may also cover any 25 kHz
channel from 108,000 MHz to 117,975 MHz.

The scope of the present document is limited to ground stations.

NOTE:
The equivalent specification for airborne stati
ons is
EN

302 842 [
10
]
.

The scope of the present document inclu
d
es e
quipment which supports
broadcast services only
, or
point
-
to
-
point
services only

or
both broadcast and point
-
to
-
point services.

The present document is intended to cover the prov
isions of Directive 1999/5/EC [
11
] (R&TTE Directiv
e)
,

Article 3.2, which states that "….. radio equipment shall be so constructed that it effectively uses the spectrum
allocated to terrestrial/space radio communications and orbital resources so as to avoid harmful interference
".


ETSI

ETSI EN 301 842
-
6 V1.1.1 (2006
-
01)

7

The present document incl
udes:



Clause

2 provides references to relev
ant documents;



Clause

3 provides general definitions,

abbreviations and symbols used;



Clause

4

refers to a general description and architecture of VDL Mode 4 contained in

EN 301 842
-
2 [
8
]
;



Clause

5 provides technic
al
requirements
specifications

applicable to

Article 3.2
;



Clause

6 provides

a description of testing for compliance with the technical requirements
;



Annex

A
provides the
HS Requirement & conformance Test specifications Table

(
HS
-
RTT)
;



Annex

B provides the EN
title in the official languages;



Annex

C
provides a B
ibliography;



a document history.

Mandating and Recommendati on Phrases

a)

"Shall"

The use of the word "Shall" indicates a mandated criterion; i.e. compliance

with the particular procedure or
specification is mandatory and no alternative may be applied.

b)

"Should"

The use of the word "Should" (and phrases such as "It is recommended that...", etc.) indicate that though the
procedure or criterion is regarded as th
e preferred option, alternative procedures, specifications or criteria may
be applied, provided that the manufacturer, installer or tester can provide information or data to adequately
support and justify the alternative.



ETSI

ETSI EN 301 842
-
6 V1.1.1 (2006
-
01)

8

2

References

The

following docu
ments contain provisions which, through reference in this text, constitute provisions of the present
document.

Such
r
eferences are
specific (identified by date of publication and/or edition number or version number)
and
subsequent revisions do not apply.

Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference
.

[
1
]

ICAO Doc 9816

(First Edition 2004): "Manual on VHF Digital Link (VDL) Mode 4".

[
2
]

ICAO Standards and Recommended Practices
: "Annex 10 to the Convention of International Civil
Aviation",
Volume III, Part I, Chapter 6.

[
3
]

ISO/IEC 7498
-
1

(1994): "Information technology
-

Open Systems Interconnection
-

Basic
Reference Model: The Basic Model".

[
4
]

ISO/IEC 10731

(1994): "Information technology
-

Open Systems Interconnection

-

Basic
Reference Model
-

Conventions for the definition of OSI services".

[
5
]

ETSI EN 300 113
-
1
: "Electromagnetic compatibility and Radio spectrum Matters (ERM); Land
mobile service; Radio equipment intended for the transmission of data (and/o
r speech) using
constant or non
-
constant envelope modulation and having an antenna connector; Part 1: Technical
characteristics and methods of measurement".

[
6
]

ETSI EN 301 489
-
22
: "Electromagnetic compatibility and Radio spectrum Matters (ERM);
ElectroMagnetic Compatibility (EMC) standard for radio equipment and services;

Part 22: Specific conditions for ground based VHF aeronautical mobile and fixed radio
equipment".

[
7
]

ETSI EN 301 842
-
1
: "Electromagnetic compatibility and Radio spect
rum Matters (ERM); VHF
air
-
ground Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of
measurement for ground
-
based equipment; Part 1: EN for ground equipment".

[
8
]

ETSI EN 301 842
-
2
: "Electromagnetic compatibility
and Radio spectrum Matters (ERM); VHF
air
-
ground Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of
measurement for ground
-
based equipment; Part 2: General description and data link layer".

[
9
]

ETSI EN 301 842
-
4
:
"Electromagnetic compatibility and Radio spectrum Matters (ERM); VHF
air
-
ground Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of
measurement for ground
-
based equipment; Part 4: Point
-
to
-
point functions".

[
10
]

ET
SI EN 302 842

(all parts): "Electromagnetic compatibility and Radio spectrum Matters (ERM);
VHF air
-
ground and air
-
air Digital Link (VDL) Mode 4 radio equipment; Technical characteristics
and methods of measurement for aeronautical mobile (airborne) equipm
ent".

[
11
]

Directive 1999/5/EC of the European Parliament and of the Council of 9 March 1999 on radio
equipment and telecommunications terminal equipment and the mutual recognition of their
conformity (R&TTE Directive).

[
12
]

Regulation
(EC) No 552/2004 of the European Parliament and of the Council of 10 March 2004 on
the interoperability of the European Air Traffic Management network (the interoperability
Regulation).


ETSI

ETSI EN 301 842
-
6 V1.1.1 (2006
-
01)

9

3

Definitions

and abbreviations

3.1

Definitions

3.1.1

Basic referenc
e model definitions

The present document is based on the concepts developed in the open systems interconnect basic reference model and
makes use of the following terms defined in
ISO/IEC 7498
-
1 [
3
]
:



layer,



sublayer,



entity,



service,



service access point,



service data unit,



physical layer,



data link layer.

3.1.2

Service conventions definitions

The present document makes use of the following terms defined in
ISO/IEC 10731 [
4
]
:



service provider,



service user,



servic
e primitive,



request,



indication,



confirm.

3.1.3

General definitions

For the purposes of the
present document, the
terms and definitions
given in the R&TTE Directive [
11
] and the
following
apply:

adjacent channel power
:

amount of the m
odulated RF signal power which falls within a given adjacent channel

NOTE:

Adjacent channel power includes discrete spurious, signal sidebands, and noise density (including phase
noise) at the transmitter output.

Adjacent Channel Rejection:

receiver's abil
ity to demodulate the desired signal and meet the BER requirement in the
presence of an interfering signal in an adjacent channel

NOTE:

The ratio (in dB) between the adjacent interfering signal level and the desired signal level necessary to
achieve the sp
ecified minimum BER, is the adjacent channel rejection (ACR) ratio.

Aeronautical Mobile Service
:

mobile service between aeronautical stations and aircraft stations, or between aircraft
stations, in which survival craft stations may participate


ETSI

ETSI EN 301 842
-
6 V1.1.1 (200
6
-
01)

10

Aeronautical

Telecommunicati ons Network
:

internetwork architecture that allows ground, air/ground, and aircraft
data subnetworks to interoperate by adopting common interface services and protocols based on the International
Organization for Standardization Open System
s Interconnection Reference Model

aircraft address
:

unique combination of 24 bits available for assignment to an aircraft for the purpose of air
-
ground
communications, navigation and surveillance

NOTE:

An aircraft may choose not to use this unique address
and can use instead a non
-
unique address.

Automatic Dependent Surveillance
-
Broadcast (ADS
-
B):

surveillance application transmitting parameters, such as
position, track and ground speed, via a broadcast mode data link for use by any air and ground users req
uiring it

NOTE:

ADS
-
B is a surveillance service based on aircraft self
-
determination of position/velocity/time and
automatic, periodic or random, broadcast of this information along with auxiliary data such as aircraft
identity (ID), communications control

parameters, etc. ADS
-
B is intended to support multiple high
-
level
applications and associated services such as cockpit display of traffic information, traffic alert and
collision avoidance functionality, enhanced traffic management in the air and on the g
round, search and
rescue support and others.

autotune function
:

function, performed by the Link Management Entity, that allows a ground VDL Mode 4 station to
command an aircraft to change the operating characteristics of synchronization burst transmissions

Bit Error Rate (BER):

expressed as the ratio between the number of erroneous bits received and the total number of
bits received

burst length
:

number of slots across which the VDL Mode 4 burst is transmitted

Co
-
Channel Interference (CCI)
:

co
-
channel inter
ference protection defines the capability of a receiver to demodulate
the desired signal and achieve the minimum specified BER performance in the presence of an unwanted signal at the
same assigned frequency

NOTE:

The ratio (in dB) between the wanted signa
l level and the unwanted signal level is the co
-
channel
interference ratio. The co
-
channel interference ratio has a major impact on frequency re
-
use planning
criteria.

conducted measurements
:

measurements which are made using a direct RF connection to the
equipment under test

current slot
:

slot in which a received transmission begins

Data Link Entity
:

protocol state machine capable of setting up and managing a single data link connection

Data Link Service (DLS) sublayer
:

sublayer that resides above the VDL
Mode 4 Specific Services (VSS) and the
MAC sublayers

NOTE:

The data link service (DLS) manages the transmit queue, creates and destroys data link entities (DLEs)
for connection
-
oriented communications, provides facilities for the link management entity (LM
E) to
manage the DLS, and provides facilities for connection
-
less communications.

data rate
:

Mode 4 nominal data rate is 19 200 bits/s

delayed burst
:

VDL Mode 4 burst that begins sufficiently after the beginning of a slot so that the transmitting VDL
Mode
4 station is confident that no other VDL Mode 4 station that it could receive from and is within the guard range is
transmitting in the slot

NOTE:

The delayed VDL Mode 4 burst terminates by the end of the slot in which it began (its length is shortened
to
ensure completion by the nominal time).

DLS system
:

VDL system that implements the DLS and subnetwork protocols to carry Aeronautical
Telecommunications Network (ATN) or other packets

environmental profile:
range of environmental conditions under which equ
ipment within the scope of the present
document is required to comply with the provisions of the present document.


ETSI

ETSI EN 301 842
-
6 V1.1.1 (2006
-
01)

11

frame
:

link layer frame is composed of a sequence of address, control, information and FCS fields, bracketed by
opening and closing flag sequ
ences

NOTE:

A valid frame is at least 11 octets in length and contains an address field (8 octets), a link control field
(1

octet) and a frame check sequence (2 octets). A frame may or may not include a variable
-
length
information field.

Global Signalling
Channel (GSC)
:

channel available on a world wide basis which provides for communication control

ground base station
:

aeronautical station equipment, in the aeronautical mobile service, for use with an external
antenna and intended for use at a fixed locati
on

ground station coordination
:

coordination of transmissions from two or more ground stations uses the UTC
-
minute
time frame

hand held
:

radio equipment with integral batteries, designed to be hand portable and operated hand held

NOTE:

Provisions may be ma
de for external connections and temporary installation into vehicles.

integral antenna equipment
:

radio communications equipment with an antenna integrated into the equipment without
the use of an external connector and considered to be part of the equipme
nt

NOTE:

An integral antenna may be internal or external to the equipment. In equipment of this type, a 50


RF
connection point shall be provided for test purposes.

link
:

connects a mobile DLE and a ground DLE and is uniquely specified by the combination
of mobile DLS address
and the ground DLS address

NOTE:

A different subnetwork entity resides above every link endpoint.

link establishment
:

process by which two stations discover each other, determine to communicate with each other,
decide upon the communi
cation parameters, create a link and initialize its state before beginning communications

link handoff
:

process by which peer LMEs, already in communication with each other, create a link between an aircraft
and a new ground station before disconnecting th
e old link between the aircraft and the current ground station

link layer:

layer that lies immediately above the physical layer in the Open Systems Interconnection protocol model

NOTE:

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):

protocol state machine capable of acquiring, establishing, and maintaining a
connection to a single peer system

NOTE:

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 VDL management entity
(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 via
ble.

Media Access Control (MAC):

sublayer that acquires the data path and controls the movement of bits over the data
path

mobile
:

radio equipment designed for installation into vehicles

non
-
integral antenna

equipment
:

radio communications equipment with a

connector intended for connection to an
antenna

physical layer
:

lowest level layer in the Open Systems Interconnection protocol model

NOTE:

The physical layer is concerned with only the transmission of binary information over the physical
medium (e.g. VHF

radio).

primary time source
:

normal operation timing mode in which a VDL Mode 4 station maintains time synchronization
to Universal Coordinated Time (UTC) second to within a two
-
sigma value of 400 ns


ETSI

ETSI EN 301 842
-
6 V1.1.1 (2006
-
01)

12

private parameters
:

parameters that are contained in ex
change identity (XID) frames and that are unique to the VHF
digital link environment

radiated measurements
:

measurements which involve the measurement of a radiated field

reference signal level:

signal level used in the receiver performance specifications
except otherwise stated

reference bit sequence
:

sequence of bits used in the transmitter performance specifications

secondary time source
:

timing source used in a failure mode, which applies when the primary time source fails, in
which a VDL Mode 4 station

maintains time synchronization to UTC second to within a two
-
sigma value of 15 µs

Self
-
organizing Time Division Multiple Access (STDMA):

multiple access scheme based on time
-
shared use of a
radio frequency (RF) channel employing:

1)

discrete contiguous t
ime slots as the fundamental shared resource; and

2)

a set of operating protocols that allows users to mediate access to these time slots without reliance on a master
control station

slot
:

In VDL Mode 4, time is divided into a series of time slots of equa
l period. Each VDL Mode 4 burst transmission
starts at the beginning of a slot.

station
:

VDL Mode 4 Specific Services (VSS)
-
capable entity

NOTE:

A station may be either a mobile station or a ground station. A station is a physical entity that transmits
and

receives bursts over the RF interface (either A/G or air
-
to
-
air (A/A)) and comprises, at a minimum: a
physical layer, media access control sublayer, and a unique VSS address. A station which is also a DLS
station has the same address.

subnetwork layer
:

la
yer that establishes, manages, and terminates connections across a subnetwork

superframe
:

group of 4 500 slots that span a period of one UTC minute

NOTE:

The start of the current superframe is aligned with the start of the slot that is currently being used

for
transmission. The next superframe starts one minute after the current slot.

synchronization burst (or "sync" burst):

VDL Mode 4 burst which announces, as a minimum, existence and position

NOTE:

Ground stations announce existence, position, and the cur
rent time. Mobile stations lacking timing
information can then derive the slot structure from ground synchronization bursts. Mobile stations lacking
position information can derive position from both mobile and ground synchronization bursts. This
periodic
information is used in various ways including ADS
-
B, secondary navigation, and simplifying the
LME algorithms.

Time Division Multiple Access (TDMA):

multiple access scheme based on time
-
shared use of an RF channel
employing:

1)

discrete contiguous time sl
ots as the fundamental shared resource; and

2)

a set of operating protocols that allows users to interact with a master control station to mediate access to the
channel

unicasted transmission
:

transmission addressed to a single station

VDL Mode 2
:

VHF dat
a link using a differentially encoded 8 phase shift keying modulation scheme and carrier sense
multiple access

VDL Mode 4
:

VHF data link using a Gaussian Filtered Frequency Shift Keying modulation scheme and self organizing
time division multiple access

VD
L Mode 4 burst
:

sequence of source address, burst ID, information, slot reservation, and frame check sequence
(FCS) fields, bracketed by opening and closing flag sequences, and preceded by a preamble

NOTE 1:

The start of a burst may occur only at quantized

time intervals and this constraint allows the propagation
delay between the transmission and reception to be derived.


ETSI

ETSI EN 301 842
-
6 V1.1.1 (2006
-
01)

13

NOTE 2:

The burst definitions contained within the present document consider the link layer data only (and
exclude the preamble).

VDL Mod
e 4 Specific Services (VSS) sublayer
:

sublayer that resides above the MAC sublayer and provides VDL
Mode 4 specific access protocols including reserved, random and fixed protocols

VSS user:

user of the VDL Mode 4 Specific Services

NOTE:

The VSS user could
be higher layers in the VDL Mode 4 Technical Manual or an external application
using VDL Mode 4.

VDL Management Entity (VME)
:

VDL
-
specific entity that provides the quality of service requested by the

ATN
-
defined subnetwork system management entity

NOTE:

A
VME uses the LMEs (that it creates and destroys) to acquire the quality of service available from peer
systems.

VDL Mode 4 station
:

physical entity that transmits and receives VDL Mode 4 bursts over the RF interface (either A/G
or air
-
to
-
air (A/A)) and com
prises, as a minimum: a physical layer, Media Access Control sublayer and a VSS sublayer

NOTE:

A VDL Mode 4 station may either be a mobile VDL Mode 4 station or a ground VDL Mode 4 station.

VDL Mode 4 Station Address
:

27
-
bit identifier used to uniquely ide
ntify a VDL Mode 4 station

VDL Station
:

VDL
-
capable entity

NOTE:

A station may either be a mobile station or a ground station. A station is a physical entity that transmits
and receives frames over the air/ground (A/G) interface and comprises, at a minimum
: a physical layer,
media access control sublayer, and a unique DLS address. The particular initiating process (i.e. DLE or
LME) in the station cannot be determined by the source DLS address. The particular destination process
cannot be determined by the d
estination DLS address. These can be determined only by the context of
these frames as well as the current operational state of the DLEs.

VDL System
:

VDL
-
capable entity

NOTE:

A system comprises one or more stations and the associated VDL management entity.

A system may
either be a mobile system or a ground system.



ETSI

ETSI EN 301 842
-
6 V1.1.1 (2006
-
01)

14

3.2

Abbreviations

For the purposes of the present document, the following abbreviations apply:

A/A

Air
-
to
-
air

A/G

Air/Ground

ACP

Adjacent Channel Protection

ACR

Adjacent Channel Rejection

ADS
-
B

Automatic Dependent Surveillance Broadcast

AM(R)S

Aeronautical Mobile (Route) Service

ATN

Aeronautical Telecommunication Network

AWG

Arbitrary Waveform Generator

BER

Bit Error Rate

Br

resolution bandwidth

Bv

video bandwidth

CCI

Co
-
Channel Interference

dB

deciBel

dBm

deciBels with respect to 1mW

DCE

Data Circuit
-
terminating Equipment

DLE

Data Link Entity

DLS

Data Link Service

DTE

Data Terminal Equipment

FCS

Frame Check Sequence

FM

Frequency Modulation

GFSK

Gaussian Filtered Frequency Shift Keying

GSC

Globa
l Signalling Channel

HDLC

High
-
Level Data Link Control

ICAO

International Civil Aviation Organization

ID

IDentity

ISO

International Organization for Standardization

LME

Link Management Entity

MAC

Media Access Control

nm

nautical mile

NRZI

Non
-
Return to Zer
o Inverted

OSI

Open Systems Interconnection

PC

Personal Computer

ppm

parts per million

R&TTE

Radio
equipment
and Telecommunications Terminal Equipment

RF

Radio Frequency

SARPs

Standards and Recommended Practices

SNAcP

SubNetwork Access Protocol

STDMA

Self
-
organizing Time Division Multiple Access

T

the baud period or 1/baud rate

TDMA

Time Division Multiple Access

UTC

Universal Coordinated Time

VDL

VHF Digital Link

VHF

Very High Frequency

VME

VDL Management Entity

VSA

Vector Signal Analyser

VSS

VDL Mode 4 Spe
cific Services

VSWR

Voltage Standing Wave Ratio


ETSI

ETSI EN 301 842
-
6 V1.1.1 (2006
-
01)

15

4

General description and architecture of VDL Mode 4

A
n informative

description of VDL Mode 4, the communication services provided, equipment classes, the structure of
the standards material and guidance on

equipment performance verification is provided in
EN 301 842
-
2 [
8
]

clause 4.

In most respects, the VDL Mode 4 ground station follows the provisions of the ICAO standards material for
VDL

Mode

4. Within the ICAO standard, there are som
e requirements that apply explicitly only to airborne stations.
A

number of other requirements will also not apply because of the assumed services provided by the ground station.

The scope of the present document is for a ground station supporting broadcas
t applications. Hence the ability to
support point
-
to
-
point communication is not included in the present document. Those requirements are presented in
EN

301 842
-
4 [
9
]
.


ETSI

ETSI EN 301 842
-
6 V1.1.1 (2006
-
01)

16

5

Technical requirements specifications

5
.1

En
vironmental profile

The technical requirements of the present document apply under the environmental profile for operation of the
equipment, which shall be declared by the supplier. The equipment shall comply with all the technical requirements of
the pres
ent document at all times when operating within the boundary limits of the declared operational environmental
profile.

5
.2

Conformance requirements

5
.2.1

Receive
r
requirements

5.2.1.1

Conducted spurious emission

This is specified in EN 301 842
-
1 [
7
] clause 6.1.12.
To demonstrate conformance, the equipment
shall
pass the test
procedure described in EN 301 842
-
1 [
7
] clause 9.1.10.

5.2.1.2

FM Broadcast Intermodulation

This is specified in EN 301 842
-
1 [
7
] clause 6.1.13.1. To demonstrate conformance, the equipment
shall

pass the test
procedure described in EN 301 842
-
1 [
7
] clause 9.1.1.

5.2.1.3

In
-
band Intermodulation

This is specified in EN 301 842
-
1 [
7
] clause 6.1.14. To demonstrate conformance, the equipment must pass the test
procedure described in EN 301 842
-
1 [
7
] clause 9.1.11.

5.2.
1.
4

Cabinet radiation


This is specified in EN 301 842
-
1 [
7
] clause 6.1.15
.

See EN 300 113
-
1 [
5
] for details.


5.2.2

Transmitter
requirements

5.2.2.1

Transmitter
operating range

This is speci
fied in EN 301 842
-
1 [
7
] clause 6.2.1.

Conformance to this requirement is taken to be implicit in the
successful
performance of the following transmission tests

over the full operating range
.

5.2.2.2

Channel Bit Rate

This is specif
ied in EN 301 842
-
1 [
7
] clause 6.2.2.

To demonstrate conformance, the equipment must pass the test
procedure described in EN 301 842
-
1 [
7
] clause 9.2.1.

5.2.2.
3

Manufacturer's declared output power


This is s
pecified in EN 301 842
-
1 [
7
] clause 6.2.4.

To demonstrate conformance, the equipment must pass the test
procedure described

in EN 301 842
-
1 [
7
] clause 9.2.2.



ETSI

ETSI EN 301 842
-
6 V1.1.1 (2006
-
01)

17

5.2.2.4

RF power rise time

This is specified in E
N 301 842
-
1 [
7
] clause 6.2.5.

To demonstrate conformance, the equipment must pass the test
procedure described

in EN 301 842
-
1 [
7
] clause 9.2.3.

5.2.2.5

RF power release time

This is specified in EN 301 842
-
1

[
7
] clause 6.2.6.

To demonstrate conformance, the equipment must pass the test
procedure described

in EN 301 842
-
1 [
7
] clause 9.2.4.

5.2.2.6

Conducted Spurious emissions

This is specified in EN 301 842
-
1 [
7
] clause 6.2.7.

To demonstrate conformance, the equipment must pass the test
procedure described

in EN 301 842
-
1 [
7
] clause 9.2.5.

5.2.2.7

Adjacent channel power

This is specified in EN 301 842
-
1 [
7
] clause 6.2.8.

To demonstrate conformance, the equipment must pass the test
procedure described

in EN 301 842
-
1 [
7
] clause 9.2.6.

5.2.2.8

Wide
-
band noise

This is specified in EN 301 842
-
1 [
7
] cl
ause 6.2.9.

To demonstrate conformance, the equipment must pass the test
procedure described

in EN 301 842
-
1 [
7
] clause 9.2.7.

5.2.2.9

Frequency Tolerance

This is specified in EN 301 842
-
1 [
7
] clause 6.2.10.

To demonstrate conformance, the equipment must pass the test
procedure described

in EN 301 842
-
1 [
7
] clause 9.2.8.

5.2.2.10

Load VSWR capability

This is specified in EN 301 842
-
1 [
7
] clause 6.2.11.

To demonst
rate conformance, the equipment must pass the test
procedure described in EN 301 842
-
1 [
7
] clause 9.2.9.

5.2.2.11

Cabinet radiation

This is specified in EN 301 842
-
1 [
7
] clause 6.2.12.

See EN 300 113
-
1 [
5
] for details.


5.2.3

Transceiver requirements

5.2.3.1

Start of transmission

This is specified in EN 301 842
-
1 [
7
] clause 6.3.1. Conformance to this requirement is taken to be implicit in the
successful performa
nce of the following transmission tests over the full operating range.

5.2.3.2

Automatic transmitter shutdown

This is specified in EN 301 842
-
1 [
7
] clause 6.3.2. Conformance to this requirement may be shown by written evidence

in th
e Technical Construction File
.

5.2.3.3

System timing requirements

This is specified in EN 301 842
-
1 [
7
] clause 6.3.2. Conformance to this requirement may be shown by written evidence

in the Technical Construction File.
.


ETSI

ETSI EN 301 842
-
6 V1.1.1 (2006
-
01)

18

6

Testing fo
r compliance with technical requirements

6
.1

Environmental conditions for testing

Tests defined in the present document shall be carried out at representative points within the boundary limits of the
declared operational environmental profile.

Where tech
nical performance varies subject to environmental conditions, tests shall be carried out under a sufficient
variety of environmental conditions (within the boundary limits of the declared operational environmental profile) to
give confidence of compliance
for the a
ffected technical requirements.

The test conditions described within EN 301 842
-
1 [
7
] clause 8 shall apply, as appropriate
, except for test number 13,
where
t
he

test conditions described within EN 301 842
-
2 [
8
] clause 7 shall apply.

6
.2

Interpretation of the measurement results

The interpretation of the results
is described in the test sections.

6
.3

Essential radio test suites

The test descriptions for the above conformance requirements are describe
d in EN 301 842
-
1 [
7
] clause 9.

These tests
are essential for assessment of conformity in accordance with the Directive 1999/5/EC [
11
] (R&TTE Directive).

6.4

Other test suites

The test descriptions will be provi
ded by the manufacturer, as the tests either are
not exactly specified or are equipment
-
dependent.
These tests are essential for assessment of conformity in accordance with the Directive 1999/5/EC [
11
]
(R&TTE Directive).


ETSI

ETSI EN 301 842
-
6 V1.1.1 (2006
-
01)

19

Annex A (
normative):

HS Requirement & conformance Test specifications Table
(
HS
-
RTT
)


The
HS Requirements & conformance Test specifications Table
(HS
-
RTT) in Table A
.
1 below serves a number of
purposes, as follows:

-

it provides a statement of all the essential req
uirements in words and by cross reference to a specific clause in the
present document or to a specific clause in a specific referenced document;

-

it provides a statement of all the test procedure
s

corresponding to those essential requirements by cross re
ference
to specific clause(s) in the present document or to a specific clause(s) in specific referenced document(s);

-

it qualifies each requirement to be either:



Unconditional


meaning that the requirement applies in all circumstances, or



Conditional


m
eaning that the requirement is dependent on the manufacturer having chosen to support
optional functionality defined within the schedule;

-

in the case of Conditional requirements, it associates the requirement with the particular optional service or
funct
ionality;

-

it qual
ifies each test procedure to be
:



Essential: meaning that it is included with the Essential Radio Test Suite and therefore the requirement
shall be demonstrated to be met in accordance with the referenced procedures;



Other: meaning that t
he test procedure is illustrative but other means of demonstrating compliance with

the
requirement are permitted;



eXcluded: meaning that no specific test is available for this requirement.



ETSI

ETSI EN 301 842
-
6 V1.1.1 (2006
-
01)

20

Table A.1: HS Requirements & conformance
T
est specifications
T
able

(HS
-
RTT)

Harmonized Standard EN 301 842
-
5

The following
essential
requirements and test specifications are relevant to the presumption of conformity under Article
3.2

of the R&TTE Directive

Essential
Requirement


Requirement
Conditionality


Test Specifi
cation


No

Description

Reference:

Clause No


U/C

Condition

E/O
/X

Reference: Clause
No


1

Receiver
Conducted spurious
emission

5.2.1.1

C

Note 1

E

ETSI EN 301 842
-
1

[
7
]
9.1.10

2

FM Broadcast Intermodulation

5.2.1
.2

C

Note 1

E

[
7
] 9.1.1

3

In
-
band Intermodulation

5.2.1.3

C

Note 1

E

[
7
] 9.1.11

4

Receiver
Cabinet radiation

5.2.1.4

C

Note 1

O


5

Transmitter operating range

5.2.2.1

C

No
te 2

X


6

Channel Bit Rate

5.2.2.2

C

Note 2

E

[
7
] 9.2.1

7

Manufacturer’s declared power output

5.2.2.3

C

Note 2

E

[
7
] 9.2.2

8

RF power rise time

5.2.2.4

C

Note 2

E

[
7
] 9.2.3

9

RF power release time

5.2.2.5

C

Note 2

E

[
7
] 9.2.4

10

Transmitter
Conducted spurious
emissions

5.2.2.6

C

Note 2

E

[
7
] 9.2.5

11

Adj
acent channel power

5.2.2.7

C

Note 2

E

[
7
] 9.2.6

12

Wide
-
band noise

5.2.2.8

C

Note 2

E

[
7
] 9.2.7

1
3

Frequency tolerance

5.2.2.9

C

Note 2

E

[
7
] 9.2.8

1
4

Load VSWR capability

5.2.2.10

C

Note 2

E

[
7
] 9.2.9

1
5

Transmitter
Cabinet radiation

5.2.2.11

C

Note 2

O


1
6

Start of transmission

5.2.3.1

C

Note 2

X


17

Automatic transmitter shutdown

5.2.3.2

C

Note 2

O


18

System timing requirements

5.2.3.3

C

Note 2

O


Note 1: This requirement applies

only

to equipment with a receive capability

Note 2: This requirement applies
only
to equipment with a transmit capability



ETSI

ETSI
EN 301 842
-
6 V1.1.1 (2006
-
01)

21

Key to columns:

Essential Requireme
nt: No

A unique identifier for one row of the table which may be used to identify a
requirement or its test specification.

Essential Requirement: Description

A textual reference to the requirement
.

Essential Requirement: Clause Number


Identification of cl
ause(s) defining the requirement in the present
document unless another document is referenced explicitly
.

Conditionality: U/C


Indicates whether the requirement is to be
unconditionally

applicable (U) or is
conditional

upon the manufacturers claimed funct
ionality of the equipment (C)
.

Conditionality: Condition


Explains the conditions when the requirement shall or shall not be applicable for a
technical requirement which is classified “conditional”
.

Test Specification: E/O
/X


Indicates whether the test spe
cification forms part of the
Essential Radio Test Suite

(E) or whether it is one of the
Other Test Suite

(O)

or is eXcluded (X)
.

NOTE:

All tests whether “E” or “O” are relevant to
the
requirements. Rows designated “E” collectively make up
the Essential Ra
dio Test Suite; those designated “O” make up the Other Test Suite; for those designated
“X” there is no test specified corresponding to the requirement . All tests classified “E” shall be
performed as specified with satisfactory outcomes
as

a necessary con
dition for a presumption of
conformity.
R
equirements associated with tests classified “O” or “X” must be complied with as a
necessary condition for presumption of conformity, although conformance with the requirement may be
claimed by an equivalent test or

by manufacturer’s assertion supported by appropriate entries in the
technical construction file.

Test Specification: Clause Number


Identification of clause(s) defining the test specification in the present
document unless another document is referenced e
xplicitly

Where no test is specified (that is, where the
previous field is “X”) this field remains blank.


ETSI

ETSI EN 301 842
-
6 V1.1.1 (2006
-
01)

22

Annex B

(informative):

The EN title in the official languages


Language

EN title

Czech


Danish


Dutch


English


Estonian


Finnish


French


Ge
rman


Greek


Hungarian


Icelandic


Italian


Latvian


Lithuanian


Maltese


Norwegian


Polish


Portuguese


Slovak


Slovenian


Spanish


Swedish



ETSI

ETSI EN 301 842
-
6 V1.1.1 (2006
-
01)

23

Annex C

(informative
):

Bibliography



EUROCAE ED
-
108: "Interim MOPS for VDL Mode 4 Aircraft Transcei
ver for ADS
-
B".


ETSI

ETSI EN 301 842
-
6 V1.1.1 (2006
-
01)

24

List of tables

Table A.1: HS Requirements & conformance Test specifications Table (HS
-
RTT)

................................
....

20



ETSI

ETSI EN 301 842
-
6 V1.1.1 (2006
-
01)

25

History

Document history

V1.1.1