ETSI EN 301 179 V1.2.1 (2001-02)

Fixed Radio Systems; Point-to-multipoint equipment; Frequency Hopping Code Division Multiple Access (FH-CDMA); Point-to-multipoint Digital Radio Relay Systems (DRRS) in the bands within the range 1 GHz to 3 GHz

REN/TM-04111-20

Fiksni radijski sistemi – Oprema tipa točka-več točk – Kodno porazdeljeni sodostop s frekvenčnim skakanjem (FH-DMA) – Digitalni radiorelejni sistemi (DRRS) tipa točka-več točk, ki delujejo v pasovih znotraj območja od 1 GHz do 3 GHz

General Information

• Status: Published
• Publication Date: 21-Feb-2001
• Technical Committee: TM 4 - TM Fixed Radio Systems
• Current Stage: 13 - TB decision to make document historical
• Completion Date: 10-May-2007
• Ref Project: SIST EN 301 179 V1.2.1:2003 - Fixed Radio Systems; Point-to-multipoint equipment; Frequency Hopping Code Division Multiple Access (FH-CDMA); Point-to-multipoint Digital Radio Relay Systems (DRRS) in the bands within the range 1 GHz to 3 GHz

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 301 179 V1.2.1:2003
01-december-2003
)LNVQLUDGLMVNLVLVWHPL±2SUHPDWLSDWRþNDYHþWRþN±.RGQRSRUD]GHOMHQL
VRGRVWRSVIUHNYHQþQLPVNDNDQMHP)+'0$±'LJLWDOQLUDGLRUHOHMQLVLVWHPL
'556WLSDWRþNDYHþWRþNNLGHOXMHMRYSDVRYLK]QRWUDMREPRþMDRG*+]GR
*+]
Fixed Radio Systems; Point-to-multipoint equipment; Frequency Hopping Code Division
Multiple Access (FH-CDMA); Point-to-multipoint Digital Radio Relay Systems (DRRS) in
the bands within the range 1 GHz to 3 GHz
Ta slovenski standard je istoveten z: EN 301 179 Version 1.2.1
ICS:
33.040.20 Prenosni sistem Transmission systems
33.060.30 Radiorelejni in fiksni satelitski Radio relay and fixed satellite
komunikacijski sistemi communications systems
SIST EN 301 179 V1.2.1:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

SIST EN 301 179 V1.2.1:2003

---------------------- Page: 2 ----------------------

SIST EN 301 179 V1.2.1:2003
ETSI EN 301 179 V1.2.1 (2001-02)
European Standard (Telecommunications series)
Fixed Radio Systems;
Point-to-multipoint equipment;
Frequency Hopping Code Division Multiple Access (FH-DMA);
Point-to-multipoint Digital Radio Relay Systems (DRRS)
inthebandswithintherange1GHz to3GHz

---------------------- Page: 3 ----------------------

SIST EN 301 179 V1.2.1:2003
2 ETSI EN 301 179 V1.2.1 (2001-02)
Reference
REN/TM-04111-20
Keywords
CDMA, DRRS, multipoint, radio, RLL,
transmission
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: [phone] Fax: [phone]
Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88
Important notice
Individual copies of the present document 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 versions, 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://www.etsi.org/tb/status/
If you find errors in the present document, send your comment to:
[e-mail]
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 2001.
All rights reserved.
ETSI

---------------------- Page: 4 ----------------------

SIST EN 301 179 V1.2.1:2003
3 ETSI EN 301 179 V1.2.1 (2001-02)
Contents
Intellectual Property Rights .5
Foreword.5
Introduction.5
1 Scope.7
1.1 Applications. 7
1.2 Frequency bands and channel arrangements. 7
1.3 Access method . 7
1.4 Compatibility . 7
2 References.8
3 Definitions, symbols and abbreviations .10
3.1 Definitions . 10
3.2 Symbols . 11
3.3 Abbreviations. 11
4 General system architecture .12
4.1 Sub-system components . 12
4.2 System characteristics. 13
4.2.1 Transmission error performance. 13
4.2.2 Round trip delay . 13
4.2.3 Transparency and voice coding methods. 13
4.2.4 TMN interface . 14
4.2.5 Synchronization . 14
4.2.6 Frequency hopping characteristics. 14
5 Radio characteristics .14
5.1 Frequency bands. 14
5.2 Channel arrangement. 14
5.3 System capacity. 15
5.4 Transmitter characteristics. 15
5.4.1 Tx power range. 15
5.4.2 Transmit power control . 15
5.4.2.1 Automatic Transmit Power Control (ATPC). 15
5.4.2.2 Remote Transmit Power Control (RTPC). 16
5.4.3 Spectrum mask . 16
5.4.3.1 Spectrum density mask . 16
5.4.3.2 Discrete CW components exceeding the spectrum mask limit (all stations) . 17
5.4.4 Transmitter spurious emissions. 18
5.4.5 Radio frequency tolerance. 18
5.5 Receiver characteristics . 18
5.5.1 Input level range . 18
5.5.2 Spurious emissions. 18
5.5.3 BER performance . 19
5.5.4 Interference sensitivity. 19
5.5.4.1 Co channel interference sensitivity. 19
5.5.4.2 Adjacent channel interference sensitivity. 20
5.5.4.3 Broadband CW interference rejection capability. 20
5.6 Antenna port characteristics. 20
5.6.1 RF interface. 20
5.6.2 Return loss. 20
6 Types of subscriber equipment and network exchange interface.21
7 Power supply and environmental characteristics.21
7.1 Power Supply. 21
7.2 Environmental Conditions . 21
ETSI

---------------------- Page: 5 ----------------------

SIST EN 301 179 V1.2.1:2003
4 ETSI EN 301 179 V1.2.1 (2001-02)
7.2.1 Equipment within weather-protected locations. 21
7.2.2 Equipment for non weather-protected locations . 22
7.3 Electromagnetic Compatibility Conditions. 22
Annex A (informative): Bibliography.23
History .24
ETSI

---------------------- Page: 6 ----------------------

SIST EN 301 179 V1.2.1:2003
5 ETSI EN 301 179 V1.2.1 (2001-02)
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://www.etsi.org/ipr).
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 European Standard (Telecommunications series) has been produced by ETSI Technical Committee Transmission
and Multiplexing (TM).
The former title of the present document was: "Transmission and Multiplexing (TM); Digital Radio Relay Systems
(DRRS); Frequency Hopping Code Division Multiple Access (FH-CDMA); Point-to-multipoint DRRS in the bands
within the range 1 GHz to 3 GHz".
National transposition dates
Date of adoption of this EN: 16 February 2001
Date of latest announcement of this EN (doa): 31 May 2001
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 30 November 2001
Date of withdrawal of any conflicting National Standard (dow): 30 November 2001
Introduction
The main field of application of Point-to-Multipoint (P-MP) systems is to provide access to both public and private
networks (Public Switched Telephone Network (PSTN), Private Data Network (PDN), .). By means of P-MP systems
the network service area may be extended to cover both distant and scattered subscriber locations; and the systems may
be applied to build new access networks covering both urban and rural areas.
Subscribers are offered the full range of services by the particular public or private network. Subscribers have access to
these services by means of the various standardized user network interfaces (2-wire loop, new data services).
P-MP systems provide standard network interfaces and transparently connect subscribers to the appropriate network
node. These systems allow a service to be connected to a number of subscribers ranging from a few to several thousand,
and over a wide range of distances.
P-MP systems are generally configured as Pre-Assigned Multiple Access (PAMA) radio systems or as Demand
Assigned Multiple Access (DAMA) radio systems.
The essential features of a typical P-MP DAMA radio system are:
• efficient use of the radio spectrum;
• concentration;
• transparency.
ETSI

---------------------- Page: 7 ----------------------

SIST EN 301 179 V1.2.1:2003
6 ETSI EN 301 179 V1.2.1 (2001-02)
Radio is often the ideal way of obtaining communications at low cost and almost independent of distance, and difficult
topography. Moreover, a small number of sites is required for these installations, thus facilitating rapid implementation
and minimizing maintenance requirements of the systems.
Concentration means that m subscribers can share n radio channels (m being larger than n), allowing better use to be
made of the available frequency spectrum and at a lower equipment cost. The term "multi-access" means that every
subscriber has access to every channel (instead of a fixed assignment as in most multiplex systems). When a call is
initiated an available channel is allocated to it. When the call is terminated, the channel is released for another call.
Concentration requires the use of distributed intelligent control which in turn allows many other operation and
maintenance functions to be added.
Transparency means that the exchange and the subscriber equipment communicate with each other without being aware
of the radio link.
ETSI

---------------------- Page: 8 ----------------------

SIST EN 301 179 V1.2.1:2003
7 ETSI EN 301 179 V1.2.1 (2001-02)
1 Scope
1.1 Applications
The scope of the present document covers the following typical P-MP applications, delivered directly or indirectly, or in
any superimposed transport network layer:
• voice;
• fax;
• voiceband data;
• telex;
• data up to 64 kbit/s;
• ISDN;
• Internet Access.
1.2 Frequency bands and channel arrangements
The present document covers Fixed Service bands at 1,5 GHz, 2,2 GHz, 2,4 GHz and 2,6 GHz.
The frequency plans for the 1,5 GHz, 2,2 GHz and 2,6 GHz bands are given in CEPT T/R 13-01 [7] and ITU-R
Recommendation F.1098-1 [20]. For the 2,4 GHz band, the ITU-R Recommendation F.701-2 [8] is applicable.
The present document may cover equipment which uses either Frequency Division Duplexing or Time Division
Duplexing.
NOTE: As with other point-to-multipoint standards, attention should be given to assigning spectrum so as to
allow different systems to operate in adjacent assigned frequencies without unacceptable mutual
interference. This is the responsibility of the regulatory authorities that are advised to note any guidelines
produced by CEPT, particularly those with reference to spectrum where unlike duplex methods are to be
used.
1.3 Access method
The present document covers Frequency Hopping - Code Division Multiple Access (FH-CDMA) systems.
NOTE: The method described in the present document applies slow frequency hopping TR 101 274 [26], with a
hopping period up to 400 ms. During the dwell time, several different links in the same area may operate
on different sub-channels in a manner which resembles the characteristics and properties of FDMA
systems. The sub-channel supporting each link may be further subdivided using frequency division, time
division or a combination of both techniques. (The terms "hopping period", "dwell time" and
"sub-channel" are defined in clause 3.1).
1.4 Compatibility
The present document is not intended to ensure that a Central Station (CS) from one manufacturer will inter-operate
with a Terminal Station (TS) or Repeater Station (RS) from another manufacturer.
ETSI

---------------------- Page: 9 ----------------------

SIST EN 301 179 V1.2.1:2003
8 ETSI EN 301 179 V1.2.1 (2001-02)
2 References
The following documents contain provisions which, through reference in this text, constitute provisions of the present
document.
• References are either specific (identified by date of publication, edition number, version number, etc.) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• For a non-specific reference, the latest version applies.
[1] ETSI ETS 300 012: "Integrated Services Digital Network (ISDN); Basic user-network interface;
Layer 1 specification and test principles".
[2] ITU-T Recommendation Q.553 (1996): "Transmission characteristics at 4-wire analogue interfaces
of digital exchanges".
[3] ITU-T Recommendation Q.552 (1996): "Transmission characteristics at 2-wire analogue interfaces
of digital exchanges".
[4] ITU-T Recommendation G.821 (1996): "Error performance of an international digital connection
operating at a bit rate below the primary rate and forming part of an integrated services digital
network".
[5] ITU-T Recommendation R.20: "Telegraph modem for subscriber lines".
[6] ITU-T Recommendations V-series: "Data communication over the telephone network".
[7] CEPT T/R 13-01 (1993): "Preferred channel arrangements for fixed services in the
range 1-3 GHz".
[8] ITU-R Recommendation F.701-2 (1997): "Radio-frequency channel arrangements for analogue
and digital point-to-multipoint radio systems operating in frequency bands in the range 1.350 to
2.690 GHz (1.5, 1.8, 2.0, 2.2, 2.4 and 2.6 GHz)".
[9] ETSI ETS 300 019 (all parts): "Equipment Engineering (EE); Environmental conditions and
environmental tests for telecommunications equipment".
[10] ETSI ETS 300 132: "Equipment Engineering (EE); Power supply interface at the input to
telecommunications equipment; Part 1: Operated by alternating current (ac) derived from direct
current (dc) sources; Part 2: Operated by direct current (dc)".
[11] ITU-T Recommendation G.773 (1993): "Protocol suites for Q-interfaces for management of
transmission systems".
[12] ETSI EN 300 385: "Electromagnetic compatibility and Radio spectrum Matters (ERM);
ElectroMagnetic Compatibility (EMC) standard for fixed radio links and ancillary equipment".
[13] ITU-T Recommendation G.711 (1988): "Pulse code modulation (PCM) of voice frequencies".
[14] ITU-T Recommendation G.726 (1990): "40, 32, 24, 16 kbit/s Adaptive Differential Pulse Code
Modulation (ADPCM)".
[15] ITU-T Recommendation G.728 (1992): "Coding of speech at 16 kbit/s using low-delay code
excited linear prediction".
[16] ITU-T Recommendation G.729 (1996): "C source code and test vectors for implementation
verification of the G.729 8 kbit/s CS-ACELP speech coder".
[17] ITU-R Recommendation F.697-2 (1997): "Error performance and availability objectives for the
local-grade portion at each end of an ISDN connection at a bit rate below the primary rate utilizing
digital radio-relay systems".
ETSI

---------------------- Page: 10 ----------------------

SIST EN 301 179 V1.2.1:2003
9 ETSI EN 301 179 V1.2.1 (2001-02)
[18] ETSI ETS 300 324 (all parts): "V interfaces at the digital Local Exchange (LE); V5.1 interface for
the support of Access Networks (AN)".
[19] ETSI ETS 300 347 (all parts): "V interfaces at the digital Local Exchange (LE); V5.2 interface for
the support of Access Networks (AN)".
[20] ITU-R Recommendation F.1098-1 (1995): "Radio-frequency channel arrangements for radio-relay
systems in the 1 900 - 2 300 MHz band".
[21] ITU-T Recommendation G.723.1: "Dual rate speech coder for multimedia communications
transmitting at 5.3 and 6.3 kbit/s".
[22] ITU-T Recommendation G.131 (1996): "Control of talker echo".
[23] IEC 60169-1: "Radio-frequency connectors - Part 1: General requirements and measuring
methods".
[24] IEC 60339-1: "General purpose rigid coaxial transmission lines and their associated flange
connectors - Part 1: General requirements and measuring methods".
[25] IEC 60339-2: "General purpose rigid coaxial transmission lines and their associated flange
connectors - Part 2: Detail specifications"
[26] ETSI TR 101 274: "Transmission and Multiplexing (TM); Digital Radio Relay Systems (DRRS);
Point-to-multipoint DRRS in the access network: Overview of different access techniques".
[27] ITU-R Recommendation F.1189-1 (1997): "Error performance objectives for constant bit rate
digital paths at or above the primary rate carried by digital radio-relay systems which may form
part or all of the national portion of a 27 500 km hypothetical reference path".
[28] ITU-R Recommendation F.557-4 (1997): "Availability objective for radio-relay systems over a
hypothetical reference circuit and a hypothetical reference digital path".
[29] ITU-T Recommendation G.827 (1996): "Availability parameters and objectives for path elements
of international constant bit-rate digital paths at or above the primary rate".
[30] ISO/IEC 8802-3 (1996): "Information technology - Telecommunications and information
exchange between systems - Local and metropolitan area networks - Specific requirements -
Par 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and
physical layer specifications".
[31] CEPT/ERC/Recommendation 74-01: "Spurious emissions".
[32] ITU-T Recommendation G.703 (1998): "Physical/electrical characteristics of hierarchic digital
interfaces".
[33] ITU-T Recommendations X-series: "Data networks and open system communications".
ETSI

---------------------- Page: 11 ----------------------

SIST EN 301 179 V1.2.1:2003
10 ETSI EN 301 179 V1.2.1 (2001-02)
3 Definitions, symbols and abbreviations
3.1 Definitions
For the purposes of the present document the following terms and definitions apply.
Radio Frequency channel (RF channel): partition of a radio frequency band which may be assigned by the authorities
in accordance with CEPT or ITU-R Recommendations on channel arrangement (loosely called "an individual channel"
in CEPT T/R 13-01 [7]) (see figure 1)
channel spacing: separation between the centre frequencies of neighbouring RF channels. In cases where the channel
spacing is not higher than the manufacturer's declared sub-channel bandwidth, the channel spacing is defined as the
minimum contiguous segment of bandwidth made available to the FH-CDMA system
assigned band: aggregation of all RF channels assigned to a FH-CDMA system. The assigned band may consist of
several non-contiguous RF channels (see figure 1)
sub-channel: integer sub-division of the RF channel(s) as determined by the equipment manufacturer (see figure 1)
Frequency hopping (FH): spread spectrum technique whereby individual radio links are continually switched from
one sub-channel to another. Such links are not constrained to a single RF channel
dwell time: duration of a transmission on a particular sub-channel
transition time: period between successive transmissions on different sub-channels during which no transmission is
made
hopping sequence: sequence of sub-channels which a particular link follows
hopping period: time between the starts of successive transmissions on a different sub-channel. This is the sum of
dwell time and transition time
slow frequency hopping: FH technique where the hopping period is larger than the symbol period
round trip delay: sum of the delays from points F to G and from G to F in figure 2, including any repeaters if
appropriate
RF Channel
Subchannel
Assigned Band
Figure 1: Relationship between "sub-channel", "RF channel" and "assigned band"
ETSI

---------------------- Page: 12 ----------------------

SIST EN 301 179 V1.2.1:2003
11 ETSI EN 301 179 V1.2.1 (2001-02)
3.2 Symbols
For the purposes of the present document, the following symbols apply:
dB decibel
dBm decibel relative to 1 mW
GHz Gigahertz
Hz Hertz
kbit/s kilobits per second
kHz kilohertz
Mbit/s Millions of bits per second
MHz Megahertz
ms millisecond
mW milliwatt
ppm parts per million
Ω ohms
sseconds
V Volts
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
ac alternating current
ATPC Automatic Transmit Power Control
BER Bit Error Ratio
BW Bandwidth
CCS Central Controller Station
CSMA/CD Carrier Sense Multiple Access with Collision Detection
CRS Central Radio Station
CS Central Station
CSmin minimum practical Channel Separation (for a given radio-frequency channel arrangement)
DAMA Demand Assigned Multiple Access
CW Continuous Wave
EMC Electromagnetic Compatibility
MOS Mean Opinion Score
FSK Frequency-Shift Keying
F Centre of a radio frequency channel
0
FH Frequency Hopping
FH-CDMA Frequency Hopping Code Division Multiple Access
ISDN Integrated Services Digital Network
P-MP Point-to-Multipoint
PAMA Pre-Assigned Multiple Access
PDN Private Data Network
PRBS Pseudo Random Bit Sequence
PSTN Public Switched Telephone Network
QDU Quantization Distortion Unit
RF Radio Frequency
Rx Receiver
RS Repeater Station
RTPC Remote Transmit Power Control
TE Terminal Equipment
TS Terminal Station
Tx Transmitter
ETSI

---------------------- Page: 13 ----------------------

SIST EN 301 179 V1.2.1:2003
12 ETSI EN 301 179 V1.2.1 (2001-02)
4 General system architecture
A system could consist of physical sub systems as follows (see figure 2).
TS TE
G
TS TE
G
F
TS TE
CCS
CRS
G
TS TE
Network Node
G
RS
CS
TS TE
G
Another CRS may be
connected to the same CCS
TE
G
TE
directional
Baseband interface reference points F/ G
antenna
omnidirectional
or sector antenna
Figure 2: General system architecture
4.1 Sub-system components
-TS: Terminal station (outstations with subscriber interfaces). A TS may serve more than one Terminal
Equipment (TE);
-RS: Repeater Station (radio repeater outstations with or without subscriber interfaces). A RS may serve one or
more TS;
-F: Point of connection to the network node (such as a local switch);
-G: Point(s) of connection for subscriber equipment;
-CS: Central Station which may be subdivided into two units:
- the Central Controller Station (CCS) also called the exchange unit which is the interface to the local
switch;
- the Central Radio Station (CRS) also called the radio unit which is the central baseband / radio
transceiver equipment. More than one CRS may be controlled by one CCS.
ETSI

---------------------- Page: 14 ----------------------

SIST EN 301 179 V1.2.1:2003
13 ETSI EN 301 179 V1.2.1 (2001-02)
The central station performs the interconnection with the network node (local exchange) carrying out a concentration
function by sharing the total number of available channels in the system. The central station is linked by microwave
transmission paths to each TS either directly or via one or more RS.
Whenever an existing digital transmission link is available, the network implementation can be optimized by separating
the CCS, installed at the exchange site, and the CRS.
The general characteristics which are typical for P-MP systems are considered in the present document. These
characteristics have been categorized under four headings.
1) System characteristics;
2) Radio characteristics;
3) Types of subscriber equipment and network exchange interface;
4) Power supply and environmental characteristics.
4.2 System characteristics
4.2.1 Transmission error performance
Equipment with system rate lower than 32 × 64 kbit/s, or equivalent, shall be designed to be able to meet network
performance and availability requirements specified by ITU-T Recommendation G.821 [4] following the criteria
defined in ITU-R Recommendation F.697-2 [17] for the local grade portion of the digital connection.
Equipment with system rate equal to, or greater than, 32 × 64 kbit/s, or equivalent, shall be designed in order to meet
network performance and availability requirements foreseen by ITU-T Recommendations G.826 (see Bibliography) and
G.827 [29] for the criteria defined in ITU-R Recommendations F.1189-1 [27] and F.557-4 [28] for the national portion
of the digital connection.
4.2.2 Round trip delay
The round trip delay for a 64 kbit/s traffic channel shall not exceed 20 ms.
Longer round trip delays may result at other bit rates and when using speech coding at rates lower than 64 kbit/s. In
order t
...