SIST EN 301 785 V1.2.1:2003

• Abstract:

  Revise the standard REN/TM-4092a to include the frequency band 7, 8, 13, 15, 18, 32 , 55 and 58 GHz. Exact frequency bands that will be added to the EN, it will be determied by the contribution to this WI.

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.040.20 - Transmission systems
• ICS: 33.060.30 - Radio relay and fixed satellite communications systems
• Technical Committee: SS EIT - Technical Board for the electrotechnical, information technology and telecommunications fields
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2003
• Due Date: 01-Dec-2003
• Completion Date: 01-Dec-2003
• Ref Project: ETSI EN 301 785 V1.2.1 (2002-02) - Fixed Radio Systems; Point-to-point packet data equipment; Parameters for radio systems with packet data interfaces for transmission of digital signals operating in the frequency range 7, 8, 13, 15, 18, 23, 26, 28, 32, 38, 52 to 55 GHz

SIST EN 301 785 V1.2.1:2003 is the Slovenian national standard identical to ETSI EN 301 785 V1.2.1 for fixed radio systems with point-to-point packet data equipment. It specifies minimum performance parameters, interface requirements and the method for selecting related PDH/SDH radio specifications for equipment operating in the listed GHz bands. The document is aimed at manufacturers, test laboratories, regulators and network planners working on microwave links for local and regional networks.

What does SIST EN 301 785 V1.2.1:2003 specify?

SIST EN 301 785 V1.2.1:2003 covers terrestrial fixed service radio communications equipment with packet data interfaces, or packet data interfaces combined with PDH/SDH interfaces, for point-to-point use. It sets out how such systems are organized, what interfaces they shall match, and how the applicable PDH/SDH radio standard is selected for a given band and channel spacing.

The document is organized into scope, references, definitions, general characteristics, system parameters, and two informative annexes.

Annex	What it covers
Annex A	FER/BER equivalence and an example of FER measurement for Ethernet traffic
Annex B	Bibliography

What are the key requirements of SIST EN 301 785 V1.2.1:2003?

The standard ties packet data radio systems to an existing PDH or SDH specification selected under clause 5.1. In practice, the manufacturer has to choose the matching radio standard, declare the Radio Interface Capacity (RIC), and show that the Network Interface Capacity (NIC) is at least equal to the RIC and that the RIC exceeds the minimum value in the selection table.

Channel and interface behavior

Clause 4 requires operation on channels from the referenced radio standard and channel spacing from the selected specification. Clause 4.3 fixes the baseband interface reference points at X and X'. That matters because test and conformance work must use the same points that the standard uses.

Ethernet data interfaces at 10 Mbit/s, 100 Mbit/s and 1 000 Mbit/s shall follow ISO/IEC 8802-3, IEEE 802.3 and IEEE 802.1Q. Plesiochronous interfaces at 2 Mbit/s, 8 Mbit/s and 34 Mbit/s shall follow G.703. ISDN primary rate and SDH interfaces are also tied to named ITU-T and ETSI references, so the packet radio link has to present the expected transport behavior at the edge of the radio system.

Performance and compliance

Clause 4.4 requires the equipment to be designed to meet the network performance requirements of the selected standard and the Ethernet device requirements where relevant. It also points to ITU-R guidance on propagation and line-of-sight link design. All performance measurements are to be done with 64 octet frames, which is important because error results depend on frame length.

Clause 5.1 includes the selection rules and the table that maps frequency band, channel spacing, minimum RIC, applicable PDH/SDH standard and equipment class. Clause 5.2 then explains how to translate PDH/SDH error requirements for packet-data operation. For Ethernet interfaces, BER requirements are converted to FER using the document’s table, which lets labs test packet loss rather than raw bit errors.

Conformity-related essential requirements

Clause 5.1 also repeats the essential requirements taken from EN 301 751 for conformity under the R&TTE framework. These include frequency stability, transmitter power, adjacent channel power, spurious emissions, transmitter transients, and receiver performance against co-channel, adjacent channel and blocking interference. In practice, these are the radio checks that show whether the link stays within its spectral and interference limits.

What terms does SIST EN 301 785 V1.2.1:2003 define?

• Radio Interface Capacity (RIC) - the maximum user capacity that can be transmitted over the radio interface at reference point C'.
• Network Interface Capacity (NIC) - the sum of the maximum bit rates of the implemented baseband interfaces at reference point X/X'.
• BER (Bit Error Ratio) - the ratio used to express bit errors on a digital link.
• FER (Frame Error Ratio) - the ratio used to express errored frames, especially for Ethernet traffic in this standard.
• DRRS (Digital Radio Relay Systems) - the fixed radio relay system family used as a reference throughout the document.

Who uses SIST EN 301 785 V1.2.1:2003?

Manufacturers use this standard to design packet data microwave systems and to declare RIC and interface behavior. Test laboratories use it for conformance and performance measurements, especially around BER, FER and radio parameters.

Regulators and conformity assessment bodies use it to check that equipment matches the selected PDH/SDH standard and the essential radio requirements. Network engineers and buyers use it to match frequency band, channel spacing, interface type and traffic capacity to a specific point-to-point link.

What changed in SIST EN 301 785 V1.2.1:2003 from the previous edition?

The foreword says V1.2.1 is a full formal revision in the definitions of spectral efficiency, with references updated to other existing ENs for conventional PDH/SDH applications in the same frequency bands. It also states that the former title of V1.1.1 covered only 23, 26, 28 and 38 GHz packet data radio systems.

Which standards are used with SIST EN 301 785 V1.2.1:2003?

The document relies on several grouped references:

• EN 301 751 - provides the essential radio requirements used for conformity assessment.
• EN 301 216, EN 301 128, EN 300 234, EN 300 197, EN 300 198, EN 300 407, EN 300 430, EN 300 431, EN 300 639, EN 300 786, EN 301 786 - provide the band-specific PDH/SDH or packet-data radio specifications used in clause 5.1.
• ISO/IEC 8802-3, IEEE 802.3, IEEE 802.1Q - define Ethernet physical-layer behavior and packet size limits.
• G.703, G.704, I.412, ETS 300 233, G.707, G.783, G.784, G.957, ITU-R F.750 - define PDH, ISDN and SDH interface behavior and management.
• ITU-R P.530-9 and F.1102 - provide propagation and radio link design guidance for terrestrial line-of-sight systems.

What does the SIST EN 301 785 V1.2.1:2003 document contain?

The document contains a channel-selection framework, interface requirements, a radio system block diagram and a frequency-band selection table linking band, channel spacing and minimum RIC. It also contains a translation method from PDH/SDH error requirements to packet-data operation.

Clause 5.1 is especially practical because it tells the reader which companion standard applies for a given band and class. Clause 5.2 and Annex A provide BER-to-FER conversion and an example Ethernet FER test method using 64-byte frames, which is useful for lab verification and acceptance testing.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Fixed Radio Systems; Point-to-point packet data equipment; Parameters for radio systems with packet data interfaces for transmission of digital signals operating in the frequency range 7, 8, 13, 15, 18, 23, 26, 28, 32, 38, 52 to 55 GHz33.060.30Radiorelejni in fiksni satelitski komunikacijski sistemiRadio relay and fixed satellite communications systems33.040.20Prenosni sistemTransmission systemsICS:Ta slovenski standard je istoveten z:EN 301 785 Version 1.2.1SIST EN 301 785 V1.2.1:2003en01-december-2003SIST EN 301 785 V1.2.1:2003SLOVENSKI
STANDARD
ETSI ETSI EN 301 785 V1.2.1 (2002-02)2
Reference REN/TM-04113 Keywords digital, DRRS, point-to-point, radio, transmission ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE
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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://portal.etsi.org/tb/status/status.asp 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 2002. All rights reserved.
ETSI ETSI EN 301 785 V1.2.1 (2002-02)3 Contents Intellectual Property Rights.4 Foreword.4 1 Scope.5 2 References.5 3 Definitions, symbols and abbreviations.7 3.1 Definitions.7 3.2 Symbols.7 3.3 Abbreviations.7 4 General characteristics.7 4.1 Channel arrangements.7 4.2 Channel spacing.7 4.3 Baseband interface parameters.7 4.3.1 Ethernet data interface.7 4.3.2 Plesiochronous interfaces.8 4.3.3 ISDN interface (primary rate).8 4.3.4 SDH baseband interface.8 4.4 Performance and availability requirements.8 4.5 System block diagram.8 4.6 Other general characteristics.8 5 System parameters.9 5.1 Selection of specification.9 5.2 Translation of requirements.11 Annex A (informative): FER/BER equivalence and FER measurement.12 A.1 FER/BER equivalence.12 A.2 FER equipment settings and measurement techniques (example).12 Annex B (informative): Bibliography.13 History.14
ETSI ETSI EN 301 785 V1.2.1 (2002-02)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 European Standard (Telecommunications series) has been produced by ETSI Technical Committee Transmission and Multiplexing (TM). The present document has already been published as an ETSI Technical Specification, under TS 101 785. This V1.2.1 contains full formal revision, in term of definitions of spectral efficiency, now referenced to other existing ENs for conventional PDH/SDH application in the same frequency bands. The former title of the present document V1.1.1 was "Fixed Radio Systems; Point-to-point equipment; Parameters for packet data radio systems for transmission of digital signals operating in the frequency range 23, 26, 28 or 38 GHz".
National transposition dates Date of adoption of this EN: 8 February 2002 Date of latest announcement of this EN (doa): 31 May 2002 Date of latest publication of new National Standard or endorsement of this EN (dop/e):
30 November 2002 Date of withdrawal of any conflicting National Standard (dow): 30 November 2002
ETSI ETSI EN 301 785 V1.2.1 (2002-02)5 1 Scope The present document specifies the minimum performance parameters for terrestrial fixed service radio communications equipment operating at 7, 8, 13, 15, 18, 23, 26, 28, 32, 38, 52 to 55 GHz provided with a combination Packet data interfaces or of Packet Data interfaces and PDH/SDH interfaces. Such digital systems are intended for use for point-to-point connections in local and regional networks. For regulatory purpose, reference shall be made to existing PDH/SDH standards to be used to assess the efficient use of radio spectrum. 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 and/or edition number or version number) or non-specific. • For a specific reference, subsequent revisions do not apply. • For a non-specific reference, the latest version applies. NOTE: In the case of non-specific references, the time frame of application and new certification procedures for new releases of these normative references after the date of the first public enquiry of the present document or the first certification of the equipment shall be agreed between the supplier and the regulatory authority. These new certification procedures will cover in any case only the parameters subject to changes from the on going release during the previous certification. [1] ITU-R Recommendation F.1102: "Characteristics of fixed wireless systems operating in frequency bands above about 17 GHz". [2] ITU-R Recommendation P.530-9: "Propagation data and prediction methods required for the design of terrestrial line-of-sight systems". [3] ETSI TR 101 035 (V1.1.3): "Transmission and Multiplexing (TM); Synchronous Digital Hierarchy (SDH) aspects regarding Digital Radio Relay Systems (DRRS)". [4] ISO/IEC 8802-3: "Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications". [5] IEEE 802.3: "Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier Sense Multiple Access with Collision Detection (CSMA/CD) Access Method and Physical Layer Specifications". [6] IEEE 802.1Q (1998): "Local and Metropolitan Area Networks: Virtual Bridged Local Area Networks". [7] ETSI EN 300 197 (V1.3.1): "Fixed Radio Systems; Point-to-point equipment; Parameters for radio systems for the transmission of digital signals operating at 38 GHz". [8] ETSI EN 300 198 (V1.3.1): "Fixed Radio Systems; Point-to-point equipment; Parameters for radio systems for the transmission of digital signals operating at 23 GHz". [9] ETSI EN 300 407 (V1.2.1): "Fixed Radio Systems; Point-to-point equipment; Parameters for digital radio systems for the transmission of digital signals operating at 55 GHz". SIST EN 301 785 V1.2.1:2003

ETSI ETSI EN 301 785 V1.2.1 (2002-02)6 [10] ETSI EN 300 234 (V1.2.1): "Transmission and Multiplexing (TM); Digital Radio Relay Systems (DRRS); High capacity DRRS carrying 1 x STM-1 signals and operating in frequency bands with about 30 MHz channel spacing and alternated arrangements". [11] ETSI EN 300 430 (V1.2.1): "Fixed Radio Systems; Point-to-point equipment; Parameters for radio systems for the transmission of STM-1 digital signals operating in the 18 GHz frequency band with channel spacing of 55 MHz and 27,5 MHz". [12] ETSI EN 300 431 (V1.2.1): "Fixed Radio Systems; Point-to-point equipment; Parameters for
radio system for the transmission of digital signals operating in the frequency range 24,50 GHz to 29,50 GHz". [13] ETSI EN 300 639 (V1.2.1): "Fixed Radio Systems; Point-to-point equipment; Sub-STM-1 digital radio systems operating in the 13 GHz, 15 GHz and 18 GHz frequency bands with about 28 MHz co-polar and 14 MHz cross-polar channel spacing". [14] ETSI EN 300 786 (V1.2.1): "Fixed Radio Systems; Point-to-point equipment; Sub-STM-1 digital radio systems operating in the 13 GHz, 15 GHz and 18 GHz frequency bands with about 14 MHz co-polar channel spacing". [15] ETSI EN 301 128 (V1.1.2): "Fixed Radio Systems; Point-to-point equipment; Plesiochronous Digital Hierarchy (PDH); Low and medium capacity digital radio systems operating in the
13 GHz, 15 GHz and 18 GHz frequency bands". [16] ETSI EN 301 216 (V1.1.1): "Fixed Radio Systems; Point-to-point equipment; Plesiochronous Digital Hierarchy (PDH); Low and medium capacity and STM-0 digital radio system operating in the frequency bands in the range 3 GHz to 11 GHz". [17] ETSI EN 301 751: "Fixed Radio Systems; Point-to-Point equipments and antennas; Generic harmonized standard for Point-to-Point digital fixed radio systems and antennas covering the essential requirements under article 3.2 of the 1999/5/EC Directive". [18] ETSI EN 301 786 (V1.2.1): "Fixed Radio Systems; Point-to-point equipment; Parameters for digital radio systems for the transmission of digital signals operating at 52 GHz". [19] ITU-T Recommendation G.703: "Physical/electrical characteristics of hierarchical digital interfaces". [20] ITU-T Recommendation G.704: "Synchronous frame structures used at 1 544, 6 312, 2 048, 8 448 and 44 736 kbit/s hierarchical levels". [21] ITU-T Recommendation I.412: "ISDN user
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