1、ETSI EN 301 126-2-6 1.1.1 (2002-02) European Sfandard (Telecornrnunicafions series) Fixed Radio Systems; Conformance testing; Part 2-6: Point-to-Multipoint equipment; Test procedures for Multi Carrier Time Division Multiple Access (MC-TDMA) systems 2 ETSI EN 301 126-2-6 VI .I .I (2002-02) Reference
2、DENITM-04026-2-6 Keywords DRRS, point-to-multipoint, testing, transmission ETSI 650 Route des Lucioles F-O6921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 O0 Fax: +33 4 93 65 47 16 Siret No 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-prfecture de Grasse (06
3、) No 7803/88 Important notice Individual copies of the present document can be downloaded from: http:l/w.etsi .orq 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 refere
4、nce 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 chang
5、e of status. Information on the current status of this and other ETSI documents is available at 3 If you find errors in the present document, send your comment to: Cori vriaht Notifica tion No part may be reproduced except as authorized by written permission. The copyright and the foregoing restrict
6、ion extend to reproduction in all media. O European Telecommunications Standards Institute 2002. All rights reserved. ETSI 3 ETSI EN 301 126-2-6 VI . 1 . 1 (2002-02) Contents Intellectual Property Rights 4 Foreword . 4 1 2 3 3.1 3.2 3.3 4 4.1 4.1.1 4.2 4.2.1 4.2.2 4.2.3 4.2.4 4.2.5 4.2.6 4.2.7 4.2.8
7、 4.2.9 4.3 4.3.1 4.3.2 4.4 4.4.1 4.4.2 4.4.3 4.4.4 Scope 6 References 6 Definitions. symbols and abbreviations . 6 Definitions 6 Symbols 6 Abbreviations . 7 General characteristics . 7 Equipment configuratio System configuratio Transmitter characteristi Maximum RF output power Minimum RF output powe
8、r (if applicable) Automatic Transmit Power Control (ATPC) 11 Remote Transmit Power Control (RTPC) . 12 Frequency accuracy 12 RF spectrum mask 13 Remote frequency control . 14 Spectral lines at the symbol rate . 14 Spurious emssions (external) . 14 Receiver characteristics 15 Input level range (if ap
9、plicable) 15 Spurious emssions . 16 System characteristics 16 Dynamic level range . 16 BER as a function of receiver input signal level RSL 17 Equipment Background BER 18 Interference sensitivity 19 . . 4.4.4.1 Co-channel interference sensitivity . 19 Adjacent RF-channel interference sensitivity . 2
10、1 4.4.4.2 4.4.4.3 CW spurious interference 22 History 24 ETSI 4 ETSI EN 301 126-2-6 VI .I .I (2002-02) 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
11、available for ETSI members and non-members, and can be found in ETSI SR O00 314: “Intellectual Property Rights (7PRs); Essential, orpotentially Essential, IPRs notlJied to ETSI in respect ofETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web se
12、rver (5). 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 O00 3 14 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to
13、the present document. Foreword This European Standard (Telecommunications series) has been produced by ETSI Technical Committee Transmission and Multiplexing (TM). The present document is part 2-6 of a multi-part deliverable covering the Fixed Radio Systems, Conformance testing, as identified below:
14、 Part 1 : “Point-to-point equipment - Definitions, general requirements and test procedures“; Part 2-1 : “Point-to-Multipoint equipment; Definitions and general requirements“; Part 2-2: “Point-to-Multipoint equipment; Test procedures for FDMA systems“; Part 2-3 : “Point-to-Multipoint equipment; Test
15、 procedures for TDMA systems“; Part 2-4: “Point-to-Multipoint equipment; Test procedures for FH-CDMA systems“; Part 2-5: “Point-to-Multipoint equipment; Test procedures for DS-CDMA systems“; Part 2-6: “Point-to-Multipoint equipment; Test procedures for Multi Carrier Time Division Multiple Access (MC
16、-TDMA) systems“; Part 3-1 : “Point-to-Point antennas; Definitions, general requirements and test procedures“; Part 3-2: “Point-to-Multipoint antennas - Definitions, general requirements and test procedures“ The present document defines harmonized test methods for the conformity assessment testing of
17、 point-to-multipoint fixed radio systems applying Multi Carrier Time Division Multiple Access Method (MC-TDMA). It should be noted that this part six can only be applied in conjunction with part one. EN 301 126-2-1 2 defines the conformity assessment testing requirements (definitions and general req
18、uirements) for radio specific parameters required directly by the relevant EN/ETS for point-to-multipoint systems. Annex A of EN 301 126-2-1 2 contains the suppliers declaration. Annex B contains the test report format. Parts 2,3,4 and 5 contain the appropriate test procedures for the other access m
19、ethods. It is recommended that where a clarification of a test procedure or an agreed test procedure is required, this should be described on the final page of the test report titled “Additional information supplementary to the test report“. ETSI 5 ETSI EN 301 126-2-6 VI .I .I (2002-02) National tra
20、nsposition dates Date of adoption of this EN: Date of latest announcement of this EN (doa): Date of latest publication of new National Standard or endorsement of this EN (dop/e): Date of withdrawal of any conflicting National Standard (dow): 1 February 2002 3 1 May 2002 30 November 2002 30 November
21、2002 ETSI 6 ETSI EN 301 126-2-6 VI .I .I (2002-02) 1 Scope The present document details standardized test procedures for conformance testing of equipment for Point-to-Multipoint (P-MP) digital radio relay systems applying Multi Carrier Time Division Multiple Access method (MC-TDMA). Standardized pro
22、cedures are required in order to fulfil CEPT/ERC/DEC/(97) 10 i on the mutual recognition, within CEPT, of the results of conformance tests on equipment carried out in individual CEPT Countries. Furthermore the procedures described in the present document are relevant to be able to fulfil the conform
23、ance assessment procedure described in chapter II of the Directive 1999/5/EC 3 in order to demonstrate the compliance of the DRRS with the relevant essential requirements identified in article 3 of the R Conformance testing; Part 2-1 : Point-to-Multipoint equipment; Definitions and general requireme
24、nts“. Directive 1999/5/EC of the European Parliament and of the Council of 9 March 1999 on radio equipment and telecommunications terminal equipment and the mutual recognition of their 21 31 conformity. 41 EN 60835: “Methods of measurement for equipment used in digital microwave radio transmission s
25、ystems“. CEPT/ERC/REC 74-0 1E: “Spurious emissions“. 51 3 Definitions, symbols and abbreviations 3.1 De fi nit ions For the purposes of the present document, the terms and definitions given in EN 301 126-2-1 2 apply. 3.2 Symbols For the purposes of the present document, the symbols given in EN 301 1
26、26-2-1 2 apply. ETSI 7 ETSI EN 301 126-2-6 VI .I .I (2002-02) 3.3 Abbreviations For the purposes of the present document, the abbreviations defined in EN 301 126-2-1 2 apply. 4 General characteristics Where necessary, for better understanding of the application of test methods, reference is made to
27、EN 60835 4 (Test methods). General remarks: Where systems transmitting more than one carrier over the same Tx (Multi Carrier TDMA system) all carriers being modulated according to the relevant standard, have to be tested applying for each carrier the test procedures defined for a single carrier solu
28、tion where not otherwise stated in the relevant EN/ETS. Where the transceiver can simultaneously support multiple modulation schemes, within the ITU/CEPT channel plan, (i.e. the sub carriers support different modulation schemes, 4 level, 16, level, 64 level etc., at the same time, with sub carriers
29、on at least two different modulation schemes) then the system must meet the tightest transmission mask, or tightest composition transmitter mask for the possible modulation schemes. Likewise the more sensitive RSL and most stringent Co and adjacent BER requirements shall be meet. This requirement is
30、 necessary for planning purposes. Where the transceiver covers multiple modulation schemes, but only operates on one scheme at any time, then it shall be tested against that modulation scheme. ETSI 8 4.1 Eq u i p m en t con f ig u rat i on E ETSI EN 301 126-2-6 VI .I .I (2002-02) n D FEEDER A TRANSM
31、IT B BRANCHING +-RANSMIlTEB n RF FILTER (3 Network Node z 1 i E A RECEIVE B C D *DEMODULATOR n RECEIVER n BRANCHING FEEDER - v RFFILTER e (3 -b directional antenna i Baseband interface reference points F1 G omn id irec tiona I or sector antenna Y CCS Central Control Station CRS Central Radio Station
32、 cs Central Station RS Repeater Station TE Term inal Equipment TS Terminal Station Figure 1: General system architecture I MODULATOR (3 NO FILTERING INCLUDED Figure 2: RF system block diagram ETSI 9 ETSI EN 301 126-2-6 VI .I .I (2002-02) 4.1.1 System configuration P-MP equipment is designed to opera
33、te as an access system connected to a network node (e.g. local switch) and user terminal equipments (see figure 1). The individual conformance tests are made in a single link direction (see figure 2) but for certain tests, e.g. for equipment to set up signalling, both forward and reverse links have
34、to operate, the minimum equipment arrangement for tests with only one subscriber is shown in figure 3, where the forward and return RF paths are separated by a pair of duplexers and separate attenuators are inserted in each path. In the absence of any more specific instructions from the supplier it
35、is suggested that the links are operated at threshold (RSL) + n dB where n is half of the link dynamic range except when the receiver is being tested. The other receiver(s) should continue to be operated at threshold (RSL) + n dB. Calibrated splitters or directional couplers will be inserted at poin
36、ts A, B, C and D (see figures 3 and 4) as required for the individual tests, either to provide test points or sources of interfering signals. CRS transmit path error rate testers, call generators etc. as required C D TS transmit path Bit Pattern Generators, bit error rate testers, call 1 generators
37、etc. as required NOTE: NOTE 1: NOTE 2: NOTE 3: TDD systems may only require a single path with one attenuator. Figure 3: Test configuration for a single Terminal Station Calibrated splitters or directional couplers will be inserted at points A, B, C and D as required for the individual tests, either
38、 as test points or as sources of interfering signals. When measuring the TS transmitter to demonstrate that it meets the emission mask and spurious emissions limits, the splitter network will have only one TS connected and this network may be removed. The P-MP systems to be tested are duplex systems
39、 and features such as time/frequency synchronization and ATPC require both paths to be functioning correctly. To ensure that the results of measurements on either the forward or return paths, e.g. receiver RSL, are not influenced by conditions in the other path it may be necessary to provide lower a
40、ttenuation, or raise the transmitter power, in this other path. In the absence of any more specific instructions from the supplier it is suggested that this other path is operated at threshold (RSL) + n dB. All the test procedures, presented in the following clauses below, shall apply to both CRS(s)
41、 and TS(s). Unless otherwise stated, all essential requirements (ER) tests shall be undertaken at the nominal and extremes of power supply and environmental parameters and at maximum output power. RF power, spectrum and frequency measurements shall be undertaken at top, middle and bottom frequencies
42、 within the declared range of frequencies. These RF frequencies may be selected by remote control or otherwise. ETSI 10 ETSI EN 301 126-2-6 VI .I .I (2002-02) Central or remote stations incorporating integral antennas shall be provided with an appropriate coaxial or wave guide transition by the supp
43、lier in order to facilitate the measurements described. For tests where the simultaneous use of several TSs is necessary, then an arrangement similar to that shown in figure 4 is required. To enable communication, the traffic load may be simulated and facilities such as remote loop back may be used
44、to route traffic through the system. This arrangement ensures that the system operates in a normal manner similar to its configuration for measurements such as transmitter mask and RSL. NOTE 4: TDD systems may only require a single path with one attenuator. CRS transmit path Bit Pattern Gen., bit er
45、ror rate testers, call gen. etc. as required TS transmit Path . * T 4 splitter Network i ncl udi ng attenuator s etc. if required for isolation between TSs -communications error rate testers, call generators etc. as required Figure 4: Test configuration for multiple Terminal Stations 4.2 Trans m i t
46、t e r c h a ra ct e ri s t i cs 4.2.1 Maximum RF output power Objective: VeriSl that the highest average RF output power measured during a transmission burst at reference point B or C (see figure 5) is within the suppliers declared value, plus/minus the EN/ETS tolerance, and does not exceed the EN/E
47、TS (where not specified then the ITUKEPT) maximum value. Test instruments: Average Power Meter with a time gating function or an appropriate alternate (including theoretical calculation to correct a normal power meter reading). ETSI 11 2 E A Mxldata TdW ETSI EN 301 126-2-6 VI .I .I (2002-02) PowriEt
48、er Tdt BC) RFfllta wla - -1 Test Configuration: Test Procedure: With the transmitter power level set to maximum, including ATPC/RTPC, etc, the maximum output power of the transmitter at point B (C) during the worst case, as declared by the supplier, of the modulated transmission burst is measured. T
49、o make this measurement an average power meter with a time gating function or an appropriate alternate shall be used. All systems should be tested at 3 frequencies: top, middle and bottom frequencies of the available range. A power splitter or coupler may be required if the TS requires an RF link from the CRS before it can operate. For the CRS this may be done using a power meter with all sub carriers and all time slots transmitting at maximum power. For the TS this may be done by synchronizing the power measurement with the active burst(s) or corr
