IEC TS 61334-5-5:2001

Distribution automation using distribution line carrier systems - Part 5-5: Lower layer profiles - Spread spectrum - fast frequency hopping (SS-FFH) profile

Is a technical specification describing the requirements of the spread spectrum-fast frequency hopping (SS-FFH) approach for distribution line carrier communication systems. It incorporates the primitives provided by the physical and MAC layer entities as well as the modulation and transmission methods.
This publication is of high relevance for Smart Grid.

General Information

• Status: Published
• Publication Date: 26-Sep-2001
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 33.200 - Telecontrol. Telemetering
• Technical Committee: TC 57 - Power systems management and associated information exchange
• Drafting Committee: WG 9 - TC 57/WG 9
• Current Stage: PPUB - Publication issued
• Start Date: 15-Oct-2001
• Completion Date: 27-Sep-2001

Standards Content (Sample)

TECHNICAL IEC
SPECIFICATION
TS 61334-5-5
First edition
2001-09
Distribution automation using
distribution line carrier systems –
Part 5-5:
Lower layer profiles –
Spread spectrum-fast frequency
hopping (SS-FFH) profile
Reference number
IEC/TS 61334-5-5:2001(E)
Publication numbering
As from 1 January 1997 all IEC publications are issued with a designation in the
60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1.
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TECHNICAL IEC
SPECIFICATION
TS 61334-5-5
First edition
2001-09
Distribution automation using
distribution line carrier systems –
Part 5-5:
Lower layer profiles –
Spread spectrum-fast frequency
hopping (SS-FFH) profile
 IEC 2001  Copyright - all rights reserved
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– 2 – TS 61334-5-5  IEC:2001(E)
CONTENTS
FOREWORD . 3
INTRODUCTION .5
1 Scope and object . 6
2 Normative references. 6
3 Abbreviations and definitions . 7
3.1 Abbreviations. 7
3.2 Definitions . 7
4 Physical layer . 8
4.1 Purpose . 8
4.2 Electrical characteristics . 8
4.3 Modulation principle. 8
4.4 Receiver principle . 9
4.5 Synchronization . 9
4.6 Frequency sets . 10
4.7 Physical frame encapsulation. 10
4.8 Symbol, bit and byte encoding . 11
4.9 Important parameters. 11
4.10 Physical layer data services. 11
4.11 Physical layer management interface. 13
4.12 Physical layer states . 14
5 Medium access control sublayer . 16
5.1 Outline. 16
5.2 Repeater principle. 20
5.3 MAC layer data service definition. 20
5.4 MAC layer timeout values . 22
5.5 MAC sublayer management services . 23
5.6 MAC layer states . 27
Figure 1 – Time representation of M = 3 SS-FFH symbol. 8
Figure 2 – Coding of information symbols in sequence of carrier chips . 8
Figure 3 – Actual P_PDU representation . 11
Figure 4 – MAC services . 17
Figure 5 – Frame decomposition . 19
Figure 6 – MAC management services . 23
Figure 7 – Example segmentation of M_SDU. 29

TS 61334-5-5  IEC:2001(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DISTRIBUTION AUTOMATION USING
DISTRIBUTION LINE CARRIER SYSTEMS –
Part 5-5: Lower layer profiles –
Spread spectrum-fast frequency hopping (SS-FFH) profile
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, the IEC publishes International Standards. Their preparation is
entrusted to technical committees; any IEC National Committee interested in the subject dealt with may
participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. The IEC collaborates closely with the International
Organization for Standardization (ISO) in accordance with conditions determined by agreement between the
two organizations.
2) The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an
international consensus of opinion on the relevant subjects since each technical committee has representation
from all interested National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this technical specification may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
The main task of IEC technical committees is to prepare International Standards. In
exceptional circumstances, a technical committee may propose the publication of a technical
specification when
the required support cannot be obtained for the publication of an International Standard,
despite repeated efforts, or
the subject is still under technical development or where, for any other reason, there is the
future but no immediate possibility of an agreement on an International Standard.
IEC 61334-5-5, which is a technical specification, has been prepared by IEC technical
committee 57: Power system control and associated communications.
The text of this technical specification is based on the following documents:
Enquiry draft Report on voting
57/489/CDV 57/518/RVC
Full information on the voting for the approval of this technical specification can be found in
the report on voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 3.

– 4 – TS 61334-5-5  IEC:2001(E)
The committee has decided that the contents of this publication will remain unchanged until
2004. At this date, the publication will be
transformed into an International Standard;
reconfirmed;
withdrawn;
replaced by a revised edition, or
amended.
A bilingual version of this publication may be issued at a later date.

TS 61334-5-5  IEC:2001(E) – 5 –
INTRODUCTION
This technical specification describes a new physical layer variant with respect to the already
defined modulation techniques FSK and S-FSK within the IEC 61334 series (IEC 61334-5-1
1)
and IEC 61334-5-2 ).
The SS-FFH profile outlined in this technical specification basically incorporates spread
spectrum modulation techniques. It offers the main advantages of very high robustness and
improved EMI characteristics without sharing classical spread spectrum drawbacks such as
exaggerated bandwidth demand or impractical realization.
The profile specifies the physical layer including the transmission methods and the services
provided by both the physical layer and medium access sublayer entities.
________
1)
IEC 61334-5-1, Distribution automation using distribution line carrier systems – Part 5-1: Lower layer profiles –
The spread frequency shift keying (S-FSK) profile
IEC 61334-5-2, Distribution automation using distribution line carrier systems – Part 5-2: Lower layer profiles –
Frequency shift keying (FSK) profile

– 6 – TS 61334-5-5  IEC:2001(E)
DISTRIBUTION AUTOMATION USING
DISTRIBUTION LINE CARRIER SYSTEMS –
Part 5-5: Lower layer profiles –
Spread spectrum-fast frequency hopping (SS-FFH) profile
1 Scope and object
This technical specification describes the requirements of the spread spectrum-fast frequency
hopping (SS-FFH) approach for distribution line carrier communication systems. It incor-
porates the primitives provided by the physical and MAC layer entities as well as the
modulation and transmission methods.
2 Normative references
The following normative documents contain provisions which, through reference in this text,
constitute provisions of this part of IEC 61334. For dated references, subsequent amend-
ments to, or revisions of, any of these publications do not apply. However, parties to
agreements based on this part of IEC 61334 are encouraged to investigate the possibility of
applying the most recent editions of the normative documents indicated below. For undated
references, the latest edition of the normative document referred to applies. Members of
IEC and ISO maintain registers of currently valid International Standards.
IEC 61000-3-8, Electromagnetic compatibility (EMC) – Part 3: Limits – Section 8: Signalling
on low-voltage electrical installations – Emission levels, frequency bands and electromagnetic
disturbance levels
IEC 61334-4-1, Distribution automation using distribution line carrier systems – Part 4: Data
communication protocols – Section 1: Reference model of the communication system
IEC 61334-4-32, Distribution automation using distribution line carrier systems – Part 4: Data
communication protocols – Section 32: Data link layer – Logical Link Control (UC)
ITU-T Recommendation V.42, Error-correcting procedures for DCEs using asynchronous-to-
synchronous conversion
TS 61334-5-5  IEC:2001(E) – 7 –
3 Abbreviations and definitions
For the purpose of this technical specification, the following abbreviations and definitions
apply.
3.1 Abbreviations
DA Destination_address
DLC Distribution Line Carrier
FFH Fast Frequency Hopping
LV Low Voltage
M_PDU MAC Layer Protocol Data Unit
M_SDU MAC Layer Service Data Unit
MAC, M, MA Medium Access Control
MV Medium Voltage
P_PDU Physical Layer Protocol Data Unit
P_SDU Physical Layer Service Data Unit
SC Service_class
SDU Service Data Unit
SS Spread Spectrum
3.2 Definitions
3.2.1
chip
sinusoidal carrier waveform of limited time duration. Sequences of four chips form one symbol
3.2.2
domain
logical section of a DLC network
3.2.3
hops
number of routing repetitions required for communication between the master and a specific
station
3.2.4
preamble
modulated s
...