SIST ETS 300 719-2:1998
(Main)Radio Equipment and Systems (RES); Private wide area paging service; Part 2: Functional characteristics and access protocol for private wide-area paging systems on shared channels
- Abstract
A private wide area paging system which provides the flexibility, versatility and speed of an on-site paging system but covering a wider area. Minimum performance characteristics and related methods of measurement for private wide-area paging systems. On-site paging systems with an extended free field range achieved by using a higher transmitter power and antenna location, as well as a specified receiver sensitivity. It may use time sharing in order to increase the number of virtually available channels. The time sharing proposed is a free running system that requires minimum overhead and supplies minimum loss of net-airtime. The provisions for EMC compatibility are defined in the relevant EMC standard.The system will work in the high band VHF or UHF frequency range. Types of equipment covered: base station transmitters/ receivers/ transceivers, pocket receivers. Potential customers include emergency services, hospitals and manufacturing industry that may be located at various sites within the coverage area. Additional standards/specifications may be required for equipment inteded to interface to the PSTN.
- Status
- Published
- Publication Date
- 30-Sep-1998
- Technical Committee
- RES - Radio equipment and systems
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Oct-1998
- Due Date
- 01-Oct-1998
- Completion Date
- 01-Oct-1998
SIST ETS 300 719-2:1998 is the SIST adoption of the ETSI European Telecommunication Standard for Radio Equipment and Systems (RES) private wide area paging. It specifies the functional characteristics and access protocol for Private Wide-Area Paging (PWAP) systems on shared radio channels, for the people who design, license, operate, and buy base station transmitters, receivers, transceivers, and pocket receivers.
What does SIST ETS 300 719-2:1998 specify?
SIST ETS 300 719-2:1998 specifies how PWAP systems share a radio channel and how they identify themselves while doing so. It covers the operational behavior of privately owned paging systems that work over a wider area than an on-site paging system.
The document is organized into scope, normative references, definitions, functional characteristics, and access protocol, followed by informative annexes.
| Annex | What it covers |
|---|---|
| Annex A | Examples of channel sharing situations |
| Annex B | System implementation information, including parameter trade-offs, roll-out guidance, and a timing diagram |
| Annex C | Bibliography |
What are the key requirements of SIST ETS 300 719-2:1998?
Functional characteristics in Clause 4
SIST ETS 300 719-2:1998 allows PWAP systems to use any bit rate, any modulation, and any protocol, as long as the result meets the access requirements in the standard. In practice, this gives implementers flexibility, but they still have to fit the channel-sharing rules and the SIC format.
Clause 4 describes PWAP as a privately owned and operated paging service with one-way data and speech transmission on shared radio channels. The intended free field range is about 10 km, so the system is meant for city-scale coverage and nearby surroundings.
Clause 4 also says that the radio part must be built from equipment conforming to ETS 300 719-1. That matters because the paging service is not a free mix of unrelated radio equipment - the air interface has to match the companion part.
Access protocol in Clause 5
SIST ETS 300 719-2:1998 uses an automatic access protocol for each occupation of the RF channel. The protocol is self-synchronizing, uses System Identification Code (SIC) transmissions, and does not rely on an external time reference.
The basic rule is simple: a system listens, evaluates the previous SIC, and only transmits when the channel is free and its turn is due. This is the practical basis for fair sharing between independent users on the same channel.
Clause 5.3 sets the timing rules. The observation interval is 70 ms, the maximum observation time depends on the number of systems sharing the channel, and the RF channel occupancy time is selectable from 6 s to 30 s in 1 s steps. In practice, the operator must choose timing that suits traffic load and message length.
SIC format and content in Clause 5.4
SIST ETS 300 719-2:1998 requires every transmission to end with a SIC. The SIC uses Radio Paging Code 1 (RPC1) and, when needed, a separate bit sync sequence.
Clause 5.4.2 defines what the SIC message words may carry: licensee number, maximum number of systems on the channel, regional licensing office, area code, individual system identification, and ordinal number. This is what lets multiple systems recognize one another and coordinate access on a shared channel.
Clause 5.4.3 fixes the SIC modulation as direct 2-level FSK at 1 200 bit/s with defined frequency deviations. That matters because every system on the channel must be able to read the SIC reliably.
Measurement and timing in Clause 5.3.1 to 5.3.4
Clause 5.3.1 defines carrier sense delay and limits it to 25 ms. The method uses an unmodulated 1 μV emf signal burst, so equipment suppliers can test receiver response in a repeatable way.
Clause 5.3.2 to 5.3.4 link transmitter timing to the observation interval and to ETS 300 719-1 transmitter attack time. In practice, this keeps channel access predictable and reduces overlap between systems.
What terms does SIST ETS 300 719-2:1998 define?
- Private Wide-Area Paging (PWAP): a privately owned paging service that covers a wider area than an on-site paging system.
- System Identification Code (SIC): the coded signal that identifies a system and controls channel access.
- Carrier Sense Multiple Access/Collision Avoidance (CSMA/CA): the channel access approach where a system listens first and avoids collisions by waiting for a free channel.
- Radio Frequency (RF): the radio channel used for transmission and access control.
- Received Signal Strength Indication (RSSI): a receiver facility used to measure signal strength, especially during roll-out and channel checks.
- Ordinal number: the number that places a system in the access sequence on a shared channel.
- Block: the smallest unit sent over the radio channel, with useful bits and redundancy bits together.
- Packet: one block or a continuous stream of blocks sent to one receiver or one group of receivers.
Who uses SIST ETS 300 719-2:1998?
SIST ETS 300 719-2:1998 is used by engineers and manufacturers of base station transmitters, receivers, transceivers, and pocket receivers for shared-channel paging networks. It is also used by service providers and site planners in emergency services, hospitals, and manufacturing industry, where one paging service may need to cover several sites within the same area.
Licensing authorities and system operators also use it when allocating channel occupancy, area codes, and the number of systems that may share a channel. That makes the standard relevant both for equipment design and for operational planning.
What changed in SIST ETS 300 719-2:1998 from the previous edition?
SIST ETS 300 719-2:1998 corresponds to ETS 300 719-2 Edition 1.
Which standards are used with SIST ETS 300 719-2:1998?
- ETS 300 719-1 - provides the air interface specification for the PWAP radio part and is also the reference for transmitter attack time and EMC-related provisions.
- ETS 300 741 - is named in the foreword for EMC provisions.
- ITU-R Recommendation 584 - provides Radio Paging Code 1 (RPC1), which the SIC uses.
What does the SIST ETS 300 719-2:1998 document contain?
The document contains clause 4 on functional characteristics and clause 5 on access protocol, including the rules for SIC-based channel sharing. It also includes a measurement method and limit for carrier sense delay, timing definitions for observation time and transmission time slot interval, and the SIC format, contents, and modulation.
Annex A gives examples of how several systems share a channel under different traffic loads. Annex B adds implementation guidance, including parameter trade-offs, roll-out logic, and a timing diagram. Annex C lists related references for further reading.
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Frequently Asked Questions
SIST ETS 300 719-2:1998 is a standardization document published by the Slovenian Institute for Standardization (SIST). Its full title is "Radio Equipment and Systems (RES); Private wide area paging service; Part 2: Functional characteristics and access protocol for private wide-area paging systems on shared channels". This standard covers: A private wide area paging system which provides the flexibility, versatility and speed of an on-site paging system but covering a wider area. Minimum performance characteristics and related methods of measurement for private wide-area paging systems. On-site paging systems with an extended free field range achieved by using a higher transmitter power and antenna location, as well as a specified receiver sensitivity. It may use time sharing in order to increase the number of virtually available channels. The time sharing proposed is a free running system that requires minimum overhead and supplies minimum loss of net-airtime. The provisions for EMC compatibility are defined in the relevant EMC standard.The system will work in the high band VHF or UHF frequency range. Types of equipment covered: base station transmitters/ receivers/ transceivers, pocket receivers. Potential customers include emergency services, hospitals and manufacturing industry that may be located at various sites within the coverage area. Additional standards/specifications may be required for equipment inteded to interface to the PSTN.
A private wide area paging system which provides the flexibility, versatility and speed of an on-site paging system but covering a wider area. Minimum performance characteristics and related methods of measurement for private wide-area paging systems. On-site paging systems with an extended free field range achieved by using a higher transmitter power and antenna location, as well as a specified receiver sensitivity. It may use time sharing in order to increase the number of virtually available channels. The time sharing proposed is a free running system that requires minimum overhead and supplies minimum loss of net-airtime. The provisions for EMC compatibility are defined in the relevant EMC standard.The system will work in the high band VHF or UHF frequency range. Types of equipment covered: base station transmitters/ receivers/ transceivers, pocket receivers. Potential customers include emergency services, hospitals and manufacturing industry that may be located at various sites within the coverage area. Additional standards/specifications may be required for equipment inteded to interface to the PSTN.
SIST ETS 300 719-2:1998 is classified under the following ICS (International Classification for Standards) categories: 33.070.20 - Paging systems. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST ETS 300 719-2:1998 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-1998
5DGLMVNDRSUHPDLQVLVWHPL 5(6 =DVHEQDVWRULWHYSURVWUDQHJDRVHEQHJDNOLFD
QDãLUãHPSRGURþMXGHO )XQNFLMVNH]QDþLOQRVWLLQGRVWRSRYQLSURWRNRO]D
]DVHEQHVLVWHPHSURVWUDQHJDRVHEQHJDNOLFDQDNDQDOLKVVRXSRUDER
Radio Equipment and Systems (RES); Private wide area paging service; Part 2:
Functional characteristics and access protocol for private wide-area paging systems on
shared channels
Ta slovenski standard je istoveten z: ETS 300 719-2 Edition 1
ICS:
33.070.20 Sistem za osebni klic Paging systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN ETS 300 719-2
TELECOMMUNICATION July 1997
STANDARD
Source: ETSI TC-RES Reference: DE/RES-04005-2
ICS: 33.020
Key words: Paging, private, radio
Radio Equipment and Systems (RES);
Private wide area paging service;
Part 2: Functional characteristics and access protocol
for private wide-area paging systems
on shared channels
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
Postal address: F-06921 Sophia Antipolis CEDEX - FRANCE
Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
X.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: secretariat@etsi.fr
Tel.: +33 4 92 94 42 00 - Fax: +33 4 93 65 47 16
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 1997. All rights reserved.
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ETS 300 719-2: July 1997
Whilst every care has been taken in the preparation and publication of this document, errors in content,
typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to
"ETSI Editing and Committee Support Dept." at the address shown on the title page.
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ETS 300 719-2: July 1997
Contents
Foreword .5
Introduction.5
1 Scope .7
2 Normative references.7
3 Definitions, abbreviations and symbols.7
3.1 Definitions .7
3.1.1 General definitions .7
3.1.2 Functional definitions.7
3.2 Abbreviations .8
3.3 Symbols .8
4 Functional characteristics.8
4.1 General .8
4.2 Correlation of system parameters.8
5 Access protocol.8
5.1 General .8
5.2 Principles .9
5.3 Procedure .9
5.3.1 Carrier sense delay .9
5.3.1.1 Definition.9
5.3.1.2 Method of measurement.9
5.3.1.3 Limit .9
5.3.2 Observation time .10
5.3.3 Initiation of the transmitter.10
5.3.4 Duration of the RF channel occupancy .10
5.4 System Identification Code (SIC).10
5.4.1 Format of the identification signal.10
5.4.2 Contents of the SIC message words.11
5.4.3 Modulation scheme for the SIC.11
Annex A (informative): Examples of sharing situations.12
Annex B (informative): System implementation information .13
B.1 Correlation of system parameters.13
B.2 System roll-out .14
B.3 Timing diagram .14
Annex C (informative): Bibliography.15
History.16
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ETS 300 719-2: July 1997
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ETS 300 719-2: July 1997
Foreword
This European Telecommunication Standard (ETS) has been produced by the Radio Equipment and
Systems (RES) Technical Committee of the European Telecommunications Standards Institute (ETSI).
This ETS consists of two parts as follows:
Part 1: "Technical characteristics for private wide-area paging systems";
Part 2: "Functional characteristics and access protocol for private wide-area paging systems
on shared channels".
Provisions for ElectroMagnetic Compatibility (EMC) are defined in ETS 300 719-1 [1] and ETS 300 741.
Transposition dates
Date of adoption: 20 June 1997
Date of latest announcement of this ETS (doa): 31 October 1997
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 30 April 1998
Date of withdrawal of any conflicting National Standard (dow): 30 April 1998
Introduction
Private Wide-Area Paging (PWAP) systems are basically On-Site Paging (OSP) systems with an
extended range achieved by using a higher transmitter power (for guidance 25W could be a suitable
value) and antenna location, as well as a specified receiver sensitivity. Private Wide-Area Paging systems
can operate as a set of two or more paging systems working independently from each other and having
overlapping coverage areas and sharing the same channel. Potential applications include emergency
services, hospitals and manufacturing industry that may be located at various sites within the covered
area.
These systems may use time sharing in order to increase the number of virtual available channels. The
time sharing specified in this ETS is based on a free-running system with dynamic channel access, that
requires minimum overhead and provides for maximum available net-air time.
This access protocol applies to single frequency simplex operation where the carrier sense mechanism is
available for use according to this protocol. It features dynamic channel access by applying CSMA/CA
techniques. This access protocol is applicable for:
- multiple users who do not share a common central control facility but do share a common single
radio channel, for the independent transmission of paging-messages;
- multiple users who do not share a common central control facility but do share a common single
radio channel, for the independent transmission of analogue speech and / or paging messages, and
where speech-transmissions do not have any priority over the transmission of (non-speech) paging-
messages.
This ETS does not include performance characteristics that may be required by the user or requirements
for interfacing equipment.
The conditions for licensing as well as conditions for interfacing to Public Switched Telephone Network
(PSTN) are determined by the appropriate authorities.
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ETS 300 719-2: July 1997
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ETS 300 719-2: July 1997
1 Scope
This European Telecommunication Standard (ETS) specifies the access protocol and functional
characteristics for Private Wide-Area Paging (PWAP) systems. Such systems are characterized by one-
way data and speech transmissions on radio channels shared by different users. This ETS gives freedom
for the use of any bit rate, any type of modulation or any type of protocol which fulfils the requirements of
this ETS in order to access a shared radio channel.
In this ETS the operational aspects of the private wide-area paging service have been included.
2 Normative references
This ETS incorporates by dated or undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text and publications are listed hereafter.
For dated references, subsequent amendments to or revisions of any of these publications apply to this
ETS only when incorporated in it by amendment or revision. For undated references the latest edition of
the publication referred to applies.
[1] ETS 300 719-1 (1996): "Radio Equipment and Systems (RES); Private wide-
area paging system; Part 1: Air interface specification".
[2] ITU-R Recommendation 584: "Standard codes and formats for international
radio paging".
3 Definitions, abbreviations and symbols
3.1 Definitions
For the purpose of this ETS, the following definitions apply:
3.1.1 General definitions
base station receiver: A receiver fitted with an antenna socket and intended for use in a fixed location.
This can be a stand-alone device or part of a transceiver.
bit: Binary digit.
block: The smallest quantity of information that is sent over the radio channel. A constant number of
useful bits are always sent together with the corresponding redundancy bits.
packet: One block or a contiguous stream of blocks sent by one transmitter to one particular receiver or
one particular group of receivers.
3.1.2 Functional definitions
access: To gain occupancy of the Radio Frequency (RF) channel.
cycle time (t ): The length of time between subsequent transmissions of the same system at full load.
c
transmission time slot interval (t): The duration of channel occupancy of a paging system
t
(subclause 5.3.4).
ordinal number: An integer assigned to each system to establish a sequence.
system: A service provider of private wide area paging.
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ETS 300 719-2: July 1997
3.2 Abbreviations
For the purpose of this ETS, the following abbreviations apply:
CSMA/CA Carrier Sense Multiple Access/Collision Avoidance
EMC ElectroMagnetic Compatibility
emf electromotive force
PSTN Public Switched Telephone Network
PWAP Private Wide-Area Paging
RF Radio Frequency
RPC1 Radio Paging Code 1
RSSI Received Signal Strength Indication
SIC System Identification Code
3.3 Symbols
n number of systems
t cycle time
c
t observation interval
i
t observation time
o
t maximum observation time
o max
t transmission time slot interval
t
4 Functional characteristics
4.1 General
The private wide-area paging system is a privately owned and operated paging system to serve an area
within and beyond the boundary of the site. The intended free field range of a system is approximately
10 km (to comprise a city and its near surroundings). The radio channel may be either shared by several
systems or dedicated to a single system.
The radio part of a private wide-area paging system as defined in this ETS is made up exclusively from
equipment that conforms with ETS 300 719-1
...