1、 IEC/TR 62002-3 Edition 1.0 2008-09 TECHNICAL REPORT Mobile and portable DVB-T/H radio access Part 3: Measurement Interface IEC/TR 62002-3:2008(E) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2008 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publicat
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8、o give us your feedback on this publication or need further assistance, please visit the Customer Service Centre FAQ or contact us: Email: csciec.ch Tel.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC/TR 62002-3 Edition 1.0 2008-09 TECHNICAL REPORT Mobile and portable DVB-T/H radio access Part 3: Measu
9、rement Interface INTERNATIONAL ELECTROTECHNICAL COMMISSION M ICS 33.170 PRICE CODE ISBN 2-8318-9983-4 Registered trademark of the International Electrotechnical Commission 2 TR 62002-3 IEC:2008(E) CONTENTS FOREWORD.3 1 Scope.5 2 Normative references .5 3 Abbreviations .6 4 Interface description.7 4.
10、1 General .7 4.2 Manual measurement 7 4.3 Test system controlled measurement 7 5 Measurement interface commands .8 5.1 General .8 5.2 Starting BER measurement .9 5.2.1 General .9 5.2.2 Start MFER measurement mode 9 5.3 Stop measuring .9 5.4 Restart counters9 5.5 Signal quality reporting10 Figure 1 E
11、xample of a test set up in test system controlled measurement 8 Table 1 Parameters for start command 8 Table 2 Initial report header parameters (after start/restart) .10 Table 3 Signal quality parameters11 TR 62002-3 IEC:2008(E) 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ MOBILE AND PORTABLE DVB-T
12、/H RADIO ACCESS Part 3: Measurement Interface FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on a
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23、f a different kind from that which is normally published as an International Standard, for example “state of the art“. IEC 62002-3, which is a technical report, has been prepared by technical area 1: Terminals for audio, video and data services and contents, of IEC technical committee 100: Audio, vi
24、deo and multimedia systems and equipment. The text of this technical report is based on the following documents: Enquiry draft Report on voting 100/1397/DTR 100/1443/RVC Full information on the voting for the approval of this technical report can be found in the report on voting indicated in the abo
25、ve table. 4 TR 62002-3 IEC:2008(E) This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts in the IEC 62002 series, under the general title Mobile and portable DVB-T/H radio access, can be found on the IEC website. The committee has decided that the c
26、ontents of this publication will remain unchanged until the maintenance result date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. A
27、bilingual version of this publication may be issued at a later date. TR 62002-3 IEC:2008(E) 5 MOBILE AND PORTABLE DVB-T/H RADIO ACCESS Part 3: Measurement Interface 1 Scope This Technical Report is defining the minimum requirements for a terminal measurement interface to be used in test systems desi
28、gned to verify the terminal conformance according IEC 62002-1 and IEC 62002-2. The interface is especially designed to be used with terminal category c), hand-held portable convergence terminals, but can obviously be used with other terminal categories as well (see IEC 62002-1, Clause 4). The measur
29、ement interface is used to control the terminal and read the degradation information from the terminal. The test signal interface (terminal input) is specified in the IEC 62002-2 and is not part of this Technical Report. 2 Normative references The following referenced documents are indispensable for
30、 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. IEC 62002-1, Mobile and portable DVB-T/H radio access Part 1: Interface specification IEC 62002-2, Mobile
31、 and portable DVB-T/H radio access Part 2 Interface conformance testing 6 TR 62002-3 IEC:2008(E) 3 Abbreviations For the purposes of this document, the following abbreviations apply. B Bandwidth BER Bit error ratio BT Bluetooth C Carrier power in band carrier power including any echoes C/N Carrier t
32、o noise ratio CR Code rate CR Carriage return, ASCII code 0x0d dB Decibel dB(mW) Power in dB compared to 1 mW DVB, DVB-T Digital video broadcasting, terrestrial digital video broadcasting DVB-H Digital video broadcasting to hand-held terminals ESR 5Erroneous Second Ratio 5 % F Frequency in Hz FER Fr
33、ame error rate GI Guard interval IR Infrared LF Line feed, ASCII code 0x0a MFER MPE-FEC frame error rate MHz Megahertz MPE-FEC Multi Protocol Encapsulation Forward Error Correction PER Packet error ratio PSI/SI Program specific information, service information QAM16, QAM64 Quadrature amplitude modul
34、ation, 16-level and 64-level versions QEF Quasi error free QPSK Quaternary phase shift keying SFP Subjective failure point TPS Transmission Parameter Signalling TS Transport stream TS-PER Transport stream packet error ratio UART Universal asynchronous receiver transmitter UI User interface USB Unive
35、rsal serial bus WLAN Wireless local area network TR 62002-3 IEC:2008(E) 7 4 Interface description 4.1 General The purpose of the interface is to allow the test system to control the terminal so that it can be set to the different operating modes and frequencies required by the conformance test proce
36、dures, read degradation information from the terminal. The terminal can also output additional useful information, e.g. signal strength, modulation parameters etc. This information can be used in other measurements like field tests. This interface will support the use of degradation criteria a), b),
37、 c) and d) as specified in IEC 62002-2. a) Reference BER, defined as BER = 2 10 4after Viterbi decoding. b) Picture failure point (PFP). ESR 5for entire Transport Stream based on the reported TS-PER. c) Subjective failure point in mobile reception SFP. ESR 5for entire Transport Stream based on the r
38、eported TS-PER. d) DVB-H error criterion with 5 % MFER. Depending on the specific conformance measurement one of these will be used according to IEC 62002-2. The terminal should support one of the following measurement methods. Manual measurement Test system controlled measurement Although a manual
39、measurement mode is included in the recommendation the main purpose of the recommendation is to describe the interface to be used in an automatic test system, where the test system is controlling the terminal and reading the measured values from the terminal. 4.2 Manual measurement The terminal shou
40、ld provide interfaces to read out the degradation criteria manually as required by the specific conformance measurement. The measured values should be displayed on the terminal display after the measurement. 4.3 Test system controlled measurement The terminal should provide an external serial interf
41、ace to allow control of the terminal by the test system and read back of measured information by the test system. Communication over the interface is done with ASCII character messages. This interface should support for example one of the following physical interfaces. USB UART (RS-232) Port Bluetoo
42、th WLAN (telnet) IR ASCII messages should be mapped to the physical interface. A possible test setup is presented in the Figure 1. 8 TR 62002-3 IEC:2008(E) Signal Generator DVB-H Terminal System Control PC Test Signal interface according to IEC 62002-2 Measurement interface using USB / BT / RS-232 f
43、or commands and logging data Signal Generator Command interfaceSystem control PC Signal generator commande interface Signal generator Test signal interface according to IEC 62002-2 DVB-H terminal Measurement interface using USB/BT/RS-232 for commands and logging data IEC 1491/07 Figure 1 Example of
44、a test set up in test system controlled measurement 5 Measurement interface commands 5.1 General The message consists of a single line starting with TEST command followed by START, RESTART or STOP command and necessary parameters. The parameters are separated with space. The parameter name and value
45、 are separated by a character : i.e. colon. The end of line mark is Carriage Return Line Feed i.e. ASCII 0x0d 0x0a. The message can be sent either via terminal UI or via remote link connection. The parameters for START command are given in Table 1. Table 1 Parameters for start command Abbreviation P
46、arameter description FRE Frequency in Hz, example (498000000) BDW Bandwidth in MHz, example (8) PID PID value in decimal. If PID or IP is omitted BER measurement mode is started. PRI Hierarchical modulation, 0 = Low priority, 1 = Hi priority (= No hierarchy) ROW MPE-FEC rows , 0 = 256(0,5M), 1 = 512
47、(1M), 2 = 768(1,5M), 3 = 1024(2M) MBD Maximum burst duration of burst in tens of milliseconds, example 50 equals 500 ms IPV IP version, 6 = Ipv6, 4 = ipv4 IPA IP address e.g FF15:0002:0001 for IPv6 225.6.7.8 for IPv4 If PID or IP is omitted BER measurement mode is started RESTART or STOP commands do
48、 not have any parameters. TR 62002-3 IEC:2008(E) 9 5.2 Starting BER measurement 5.2.1 General The terminal is set to BER measurement mode by sending the following message: TEST START FRE:FrequencyHz BDW:BandwidthMHz PRI:LP/HP0/1 Above means Carriage Return, means Line Feed. Frequency and the signal
49、bandwidth are given to the receiver. The receiver must discover automatically the rest of the modulation parameters using TPS information etc. An example for starting a BER measurement at a frequency of 586MHz is given below. TEST START FRE:586000000 BDW:8 PRI:1 5.2.2 Start MFER measurement mode The terminal is set to MFER measurement mode by sending the following message: TEST START FRE:FrequencyHz BDW:BandwidthMHz PRI:LP/HP0/1 PID:PIDdecimal
