EN 13757-4:2005

SLOVENSKI STANDARD
01-november-2005
Communication systems for meters and remote reading of meters - Part 4:
Wireless meter readout (Radio meter reading for operation in the 868 MHz to 870
MHz SRD band)
Communication systems for meters and remote reading of meters - Part 4: Wireless
meter readout (Radio meter reading for operation in the 868 MHz to 870 MHz SRD band)
Kommunikationssysteme für Zähler und deren Fernablesung - Teil 4: Zählerauslesung
über Funk (Fernablesung von Zählern im SRD-Band von 868 MHz bis 870 MHz
Systemes de communication et de télérelevé des compteurs - Partie 4: Echange de
données des compteurs par radio (Lecture de compteurs dans la bande SRD 868 MHz a
870 MHz)
Ta slovenski standard je istoveten z: EN 13757-4:2005
ICS:
33.200 Daljinsko krmiljenje, daljinske Telecontrol. Telemetering
meritve (telemetrija)
35.100.10 )L]LþQLVORM Physical layer
35.100.20 Podatkovni povezovalni sloj Data link layer
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 13757-4
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2005
ICS 33.200; 35.100.10; 35.100.20
English version
Communication systems for meters and remote reading of
meters - Part 4: Wireless meter readout (Radio meter reading
for operation in the 868 MHz to 870 MHz SRD band)
Systèmes de communication et de télérelevé des Kommunikationssysteme für Zähler und deren
compteurs - Partie 4: Echange de données des compteurs Fernablesung - Teil 4: Zählerauslesung über Funk
par radio (Lecture de compteurs dans la bande SRD 868 (Fernablesung von Zählern im SRD-Band von 868 MHz bis
MHz à 870 MHz) 870 MHz)
This European Standard was approved by CEN on 21 February 2005.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Central Secretariat or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13757-4:2005: E
worldwide for CEN national Members.

Contents Page
Foreword.3
1 Scope .4
2 Normative references .4
3 General.4
4 Mode S .9
5 Mode T .14
6 Mode R2 .21
7 All modes : Connection to higher OSI layers .26
Annex A (informative) Frequency allocation and band usage.27
Annex B (informative) Flag, assignment of the "unique User/Manufacturer ID", three letter codes.28
Annex C (informative) Mode S example .29
Annex D (informative) Mode T1 Example.31
Bibliography .33

Foreword
This European Standard (EN 13757-4:2005) has been prepared by Technical Committee CEN/TC 294
“Communication systems for meters and remote reading of meters”, the secretariat of which is held by
AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by December 2005, and conflicting national standards shall be withdrawn
at the latest by December 2005.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland
and United Kingdom.
1 Scope
This European Standard specifies the requirements of parameters for the physical and the link layer for
systems using radio to read remote Meters. The primary focus is to use the Short Range Devices (SRD)
unlicensed telemetry band, 868 MHz to 870 MHz. The standard encompasses systems for walk-by, drive-by
and fixed installations. As a broad definition, this European Standard can be applied to various application
layers.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
EN 13757-3:2004, Communication systems for and remote reading of meters - Part 3: Dedicated application
layer
EN 60870-5-1, Telecontrol equipment and systems – Part 5: Transmission protocols – Section
1: Transmission frame formats (IEC 60870-5-1:1990)
EN 60870-5-2, Telecontrol equipment and systems – Part 5: Transmission protocols – Section 2: Link
transmission procedures (IEC 60870-5-2:1992)
ISO/IEC 646, Information technology - ISO 7-bit coded character set for information interchange
CEPT/ERC/REC 70-03 E, Relating to the use of short range devices (SRD)
ETSI EN 300 220-1, V1.3.1:2000, ElectroMagnetic Compatibility and Radio Spectrum Matters (ERM); Short
range devices (SRD); Radio equipment to be used in the 25 MHz to 1 000 MHz frequency range with power
levels ranging up to 500 mW; Part 1: Technical characteristics and test methods
ETSI EN 300 220-2, V1.3.1:2000, ElectroMagnetic Compatibility and Radio Spectrum Matters (ERM); Short
range devices (SRD); Radio equipment to be used in the 25 MHz to 1 000 MHz frequency range with power
levels ranging up to 500 mW; Part 2: Supplementary parameters not intended for conformity purposes
ETSI EN 301 489-1, V1.4.1:2002, Electromagnetic compatibility and Radio spectrum Matters ERM;
ElectroMagnetic Compatibility (EMC) standard for radio equipment and services; Part 1: Common technical
requirements
ETSI EN 301 489-3, V1.3.1:2001, Electromagnetic compatibility and Radio spectrum Matters (ERM);
ElectroMagnetic Compatibility (EMC) standard for radio equipment and services; Part 3: Specific conditions
for Short-Range Devices (SRD) operating on frequencies between 9 kHz and 40 GHz
3 General
3.1 Introduction
The "Meters" may communicate with "Other" system components, for example mobile readout devices,
stationary receivers, data collectors or system network components. For the meter side, it is assumed that the
communication function will work without any operator’s intervention or need for battery replacement over the
full lifetime of the radio part of the meter. Other components such as the mobile readout or stationary
equipment may have a shorter battery lifetime or require an external power supply as dictated by the technical
parameters and use.
Three different modes of operation are defined for the communication with the meter. Many of the physical
and link layer parameters of these different modes of this document are identical, allowing the use of common
hardware and software. However, due to the operational and technical requirements of these modes some
parameters will differ.
a) "Stationary mode", mode S is intended for unidirectional or bi-directional communications between
stationary or mobile devices. A special transmit only sub-mode S1 could be optimised for stationary
battery operated devices with a long header and the sub-mode S1-m is specialised for mobile receivers.
b) "Frequent transmit mode", mode T. In this mode, the meter transmits a very short frame
(typically 2 ms to 5 ms) every few seconds thus allowing walk-by and/or drive-by readout.
Transmit only sub-mode T1. It is the minimal transmission of a meter ID plus a readout value, which is sent
periodically or stochastically.
The bi-directional sub-mode T2 transmits frequently a short frame containing at least its ID and then waits for
a very short period after each transmission for the reception of an acknowledge. Reception of an acknowledge
will open a bi-directional communication channel.
c) "Frequent receive mode", mode R2. In this mode, the meter listens every few seconds for the reception of
a wakeup message from a mobile transceiver. After receiving such a wakeup, the device will prepare for
a few seconds of communication dialog with the initiating transceiver. In this mode a “multi-channel
receive mode” allows the simultaneous readout of several meters, each one operating on a different
frequency channel.
Meters or other communication devices may support one, multiple or all of the described modes.
3.2 Meter communications types
The following Table describes the key features of each mode and sub-mode.
Table 1 — Meter communication type
Mode WAY Typical Chip- Duty Maximum Data coding
Description
a
Application rate cycle duty cycle
b
+
kcps
Header
S1 1 Transmit 32,768 1 % 0,02 % Manchester Transmit only; transmits a number of
only meter times per day to a stationary receiving
+
for stationary point. Transmits in the 1 % duty cycle
receiving frequency band. Due to long header, it is
Long header
readout suitable also for battery economised
receiver.
S1-m 1 Transmit 32,768 1 % 0,02 % Manchester Transmit only; transmits with a duty cycle
only meter limitation of 0,02 % per hour to a mobile
+
for mobile or or stationary receiving point. Transmits in
stationary the 1 % duty cycle frequency band.
short header
readout Requires a continuously enabled receiver.
S2 2 All meter 32,768 1 % Manchester Meter unit with a receiver either
types. continuously enabled or synchronised
+
Stationary requiring no extended preamble for
reading wakeup. Also usable for node
short header or
transponders or concentrators. A long
option long
header is optional.
header
T1 1 Frequent 100 0,1 % 3 to 6 Transmit only with short data bursts
transmission < 5 ms every few seconds, operates in the
+
(short frame 0,1 % duty cycle frequency band.
meters)
short header
T2 2 Frequent Meter: 0,1 % 3 to 6 Meter unit transmits on a regular basis
transmission like Type T1 and its receiver is enabled
Tx : 100 +
(short frame for a short period after the end of each
meter with 2 transmission and locks on, if an
Short header
way acknowledge (at 32,768 kcps) is received.

capability)
Further bi-directional communication in

the 0,1 %-frequency band using 100 kcps
(meter transmit) and 32,768 kcps (meter
Meter 1 % Manchester
receive) may follow. Note that the
communication from the meter to the
Rx : +
"other" component uses the physical layer
32,768
Short header
of the T1 mode, while the physical layer
parameters for the reverse direction are
identical to the S2-mode.
R2 2 Frequent 4,8 1 % Manchester Meter receiver with possible battery
reception economiser, requiring extended preamble
+
for wake-up. Optionally, it may have up to
(long range)
10 frequency channels with a high
Medium
precision frequency division multiplexing.
header
Meter response with 4,8 kcps wake-up
followed by a 4,8 kcps header.
All Multi-mode   A system component may operate
option simultaneously, sequentially or by
command in more than one mode as long
as it fulfils all the requirements of each of
these modes.
a
The duty cycle limitation shall conform to the frequency band allocation defined for operation in the
868 MHz to 870 MHz SRD bands according to CEPT/ERC/REC 70-03 E.
b
The duty cycle per meter shall be limited to 0,02 % per hour to limit the total occupancy of the channel to < 10 % with 500 meters
installed within transmission range.

Figure 1 below illustrates the operation between the different modes and components.

Figure 1 — Meter communication types
3.3 Performance classes
The transmitters shall belong to one of three class levels ranging from low and medium to high radiated
power.
The maximum allowable radiated power for the transmitter is defined by CEPT/ERC/REC 70-03 E or as
permitted by local radio regulation.
When existing, the receiver shall belong to one of three classes in sensitivity and blocking performance, from
low and medium to h
...