MINISTRY OF INFORMATION AND COMMUNICATIONSS

No.: 27/ 2015/ TT- BTTTT

SOCIALIST REPUBLIC OF VIETNAMIndependence- Freedom- Happiness

Hanoi, September 28th 2015

CIRCULAR

For promulgating “National technical regulation on electromagnetic compatibility for ultra-wideband communications equipment”

Pursuant to Technical Standards and Regulation Law dated June 29th 2006;

Pursuant to Telecommunications Law dated November 23rd 2009;

Pursuant to Decree No. 127/ 2007/ ND-CP dated August 1st 2007 of Government regulating in details and instructing to perform articles of Technical Standards and Regulation Law;

Pursuant to Decree No.132/ 2013/ ND-CP dated October 16th 2013 of Government regulating function, duty, power and organizational structure of Ministry of Information and Communications;

Considering suggestion of Head of Department of Science and Technology,

Minister of Information and Communications promulgates Circular for regulating National technical regulation on electromagnetic compatibility for ultra- wideband communications equipment.

Article 1.This Circular is promulgated along with National technical regulation on electromagnetic compatibility for ultra-wideband communications equipment (QCVN 94:2015/ BTTTT).

Article 2. This Circular takes effect from April 1st 2016.

Article 3. Office manager, Head of Department of Science and Technology, Chief of Offices, unit belongs to Ministry of Information and Communications, Director of Department of Information and Communications in provinces, city under the central and relevant organizations, individuals are responsible for performing this Circular./.

Recipient:- Ministries, Ministry- level agencies,

organizations belong to Government;- People’s Committee and Ministry of

Information and Communications in provinces, cities under the central;

- Document examination Bureau (Justice Department);

- Official journal, Government Electronic Information Gate;

- Ministry of Information and Communications: Minister and Deputy Minister;

- Ministry-level agencies, units;- Electronic information gate of Ministry- Save: Archives, Science and Technology

MINISTER(Signed and sealed)

NGUYEN BAC SON

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SOCIALIST REPUBLIC OF VIETNAM

QCVN 94/2015/ BTTTT

NATIONAL TECHNICAL REGULATION ON ELECTROMAGNETIC COMPATIBILITY FOR ULTRA WIDE

BAND COMMUNICATIONS EQUIPEMENT

HA NOI- 2015

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TABLE OF CONTENT

1. GENERAL REGULATION...................................................................................................6

1.1. Scope of adjusting........................................................................................................6

1.2. Applying subject..........................................................................................................6

1.3. Adduction document....................................................................................................6

1.4. Word explanation.........................................................................................................6

1.4.1. Fixed station..............................................................................................................6

1.4.2. Plug- in radio device..................................................................................................7

1.4.3. Stand- alone equipment.............................................................................................7

1.4.4. Ancillary equipment..................................................................................................7

1.4.5. Base station equipment..............................................................................................7

1.4.6. Combined equipment.................................................................................................7

1.4.7. Continuous phenomena.............................................................................................7

1.4.8. Transient phenomena.................................................................................................7

1.4.9. Host equipment..........................................................................................................7

1.4.10. Integral antenna.......................................................................................................8

1.4.11. Removable antenna..................................................................................................8

1.4.12. Mobile equipment....................................................................................................8

1.4.13. Portable equipment..................................................................................................8

1.4.14. Multi- radio equipment............................................................................................8

1.4.16. Operating frequency range......................................................................................8

1.4.17. Port...........................................................................................................................9

1.4.18. Enclosure port..........................................................................................................9

1.4.19. Telecommunications port........................................................................................9

1.4.20. Primary function......................................................................................................9

1.4.21. Primary product.......................................................................................................9

1.4.22. Radio communicationss equipment.........................................................................9

1.4.23. Class B ITE..............................................................................................................9

1.4.24. Class A ITE...........................................................................................................10

1.5. Abbreviate......................................................................................................................10

2. TECHNICAL REGULATION.............................................................................................10

2.2. Immunity.......................................................................................................................10

2.3. Testing condition..........................................................................................................10

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2.3.1. General.....................................................................................................................10

2.3.2. Arranging testing signal...........................................................................................10

2.3.3. Exclusive frequency range.......................................................................................11

2.3.4. Receiver narrowband response or receiver is a part of transceiver.........................11

2.3.5. Modulating normal testing.......................................................................................11

2.4. Evaluating criterion.....................................................................................................11

2.4.1. General.....................................................................................................................11

2.4.2. Arranging the evaluation of equipment depend on host and plug- in card..............12

2.4.3. Evaluating procedure...............................................................................................12

2.4.4. Ancillary equipment................................................................................................12

2.4.5. Equipment sorting....................................................................................................12

2.4.6. Equipment cannot be installed continuous communications line............................13

2.5. Quality standard...........................................................................................................13

2.5.1. Common quality standard........................................................................................13

2.5.2. Standard table..........................................................................................................13

2.5.3. Criterion for continuous phenomena applied to transmitters (CT)..........................14

2.5.4. Criterion for transient phenomena applied to transmitters (TT)..............................14

2.5.5. Criterion for continuous phenomena applied to receivers (CR)..............................14

3. MANAGING REGULATIONS...........................................................................................14

4. DUTY OF ORGANIZATION, INDIVIDUAL....................................................................14

5. EXECUTING ORGANIZATION........................................................................................14

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Preface

Vietnam Regulation 94/2015/ BTTTT is established on the basis of EN 489-33 (2009-2) of

Europe Telecommunications Standard Institute (ETSI).

Vietnam Regulation 94/2015/ BTTTT is compiled by Research Institute of Posts and

Telecommunications, assessed and submitted for inspection by Department of Science and

Technology, issued by Ministry of Information and Communications attached to Circular No. 27/

2015/ TT- BTTTT dated September 28th 2015.

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NATIONAL TECHNICAL REGULATION ON ELECTROMAGNETIC

COMPATIBILITY FOR ULTRA WIDE BAND COMMUNICATIONS EQUIPMENT

1. GENERAL REGULATIONS

1.1. Scope of adjustingThis regulation stipulates requirements of electromagnetic compatibility for transmitters, receiver, and

transceiver using ultra wide band technology (UWB) used for short distance information.

Equipment using UWB technology in shaping of pulse, out of shape pulse and wave shaping with RF

This regulation is used for applications of home fixed, mobile and portable, including:

- Stand- alone radio equipment with or without attaching control section;

- Plug- in radio equipment used with/ or in different host systems, such as personal computer,

hand- held terminal, etc.

- Plug- in radio equipment used in combined equipment, such as cable module, set- top box,

access point, etc;

- Combined equipment or combining of plug- in radio equipment and a specific host equipment;

- Equipment used in highway and railway vehicles.

Regulation applies to UWB equipment with removable or integral antenna operating on some bands

for UWB communications equipment suitable to plan of allocating Vietnam national electronic radio

frequency.

This regulation is not applied to UWB transmitter fixed set outside or in models of flying, airplane and

other aeronautical forms.

1.2. Applying subjectThis regulation is applied to organizations, individuals in Vietnam and foreign countries producing,

trading equipment within the adjusting scope of this Regulation in Vietnam territory.

1.3. Adduction documentVietnam Regulation 18:2014/BTTTT, National Technical Regulation on electromagnetic

compatibility for electronic radio communications equipment

1.4. Word explanation

1.4.1. Fixed stationEquipment used for fixed station and equipped with one or more antenna.

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NOTE: Equipment can be equipped with or one (more) jack antenna or one (more) integral antenna.

1.4.2. Plug- in radio deviceEquipment includes slide- in radio card in host system, uses controlling function and power source of

host system.

1.4.3. Stand- alone equipmentEquipment is used as communications equipment and usually used stand- alone

1.4.4. Ancillary equipmentEquipment is used to connect to receiver or transmitters.NOTE: Equipment is considered as ancillary equipment if:

- Equipment is used combing to a receiver or transmitters to create operation features and/ or control supplementary to radio

communications equipment (for example to extend controls to another location or area), and

- Equipment cannot being used separately to create independent using function of a receiver or transmitters, and

- Receiver/ transmitters which it connect to can create some estimated activities such as generating and/ or receiving without

ancillary equipment (it means that it is not a sub- block of main equipment necessary to maintain basic function of main

equipment).

1.4.5. Base station equipmentRadio and/ or ancillary communications equipment used at a fixed location and electric- powered

directly or indirectly (i.e: it is electric- powered through supply network or power converter AC/ DC)

by main network or partial DC network.

1.4.6. Combined equipmentAny equipment can perform two or more functions.NOTE: At least one of these functions isin the scope of R&TTE Guideline and has a function of radio transmission. The

result of this combination is to create control and/ or function supplementing to combined equipment.

1.4.7. Continuous phenomenaElectromagnetic noise whose impacts on specific equipment or device are not sorted to any known

effect.

1.4.8. Transient phenomenaChanging phenomena between two steady-states continuously in a short duration compared to

considered time.

1.4.9. Host equipmentAny equipment has full using functions when not connecting to radio communications equipment,

thought this connection is necessary so that radio communications equipment provides supplementary

function and sets physical to receiver section.NOTE: Host equipment also includes equipment can accept a series of radio module if original using function of host

equipment is not affected.

1.4.10. Integral antennaAntenna cannot be separated while testing according to manufacturer declaration.

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1.4.11. Removable antennaAntenna can be removed while testing according to manufacturer declaration.

1.4.12. Mobile equipmentReceiver, transmitters and/ or transceiver used for set-up purpose and on vehicle and electric- powered

by main accumulator of vehicle

1.4.13. Portable equipmentRadio equipment and/ or ancillary equipment uses for mobile activity using its separate accumulator

electric power.

1.4.14. Multi- radio equipmentRadio equipment includes two or more transmitters and/ or receiver, using different technologies

which can operate simultaneously.

Picture 1- Multi- radio equipment

1.4.15. Multi- standard radio

Radio communications equipment has receiver, transmitters which can handle two or more waves in RF parts operating jointly on specific band with at least one carrier wave with differences in accessing technology compared to one or more other carrier wave.

Picture 2- Multi- standard radio

1.4.16. Operating frequency rangeBand or radio band frequency range is defined by under test equipment (EUT) with its integral block.

1.4.17. PortSpecific interface of equipment (device) having electromagnetic environment.

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Standard 1 digital radio block

Standard 1 radio block

Standard 2 digital radio blocks

Standard 2 radio block

Information gateAntenna gate gate

Standard 1+ 2 radio block of

Standard 2 digital radio blocks

Standard 1 digital radio block

Information ports Antenna port

NOTE: For example, any connector point on equipment using for connecting cable to/ from this equipment is considered as a port (Picture 3).

Picture 3- Example for ports

NOTE: Cable interface is not a port used for the purpose of testing because it does not interact with electromagnetic environment in frequency range used for this document. Cable interface is also used on evaluating standard.

1.4.18. Enclosure portPhysical boundary of equipment which electromagnetic field can radiate and influence

NOTE: If equipment has integral antenna, this port is not separate with antenna port

1.4.19. Telecommunications portTelecommunicate/ network port is a connecting point of converse, document and signal using for connecting wide distributed system through connecting system directly to telecom network (for example: public switched telecommunications network, multiservice digital network integration, digital subscriber line,…) local area networks (such as Ethernet, token Ring,…) and other similar networks.

NOTE 1: Port using for connecting tested part of ITE system (i.e. RS 232, IEEE1284 (parallel printer), universal sequence bus (USB), IEEE 1394 ((“Fire Wire”), etc) and using comply with its function feature (i.e. maximum cable length connecting to port) are not considered as telecom/ network port according to this definition.

1.4.20. Primary functionFunction of integrated equipment noticed by manufacturer is a primary function of equipment.

1.4.21. Primary productSpecific product of an integrated equipment provides primary function.

1.4.22. Radio communications equipmentCommunications equipment includes one or more transmitters and/ or receiver and / or its parts used in fixed, mobile or moving applications.

NOTE: Equipment can work with ancillary equipment; however, in this case it will depend on ancillary equipment to primary function.

1.4.23. Class B ITEClass B ITE is the equipment satisfying interfere limit of Class B ITE. Class B ITE primarily suitable to use in family environment including:

- Instable equipment at using area, for example portable equipment is powered from built- in battery;

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- Telecommunications terminal is powered from telecom network;- Personal computer and ancillary multiplexing equipment.

NOTE: Family environment is the one can use radio, television advertising relevant equipment within 10 meter.

1.4.24. Class A ITEClass A ITE is the other ITE class satisfying interfere limit of Class A ITE but not satisfying interfere limit of Class B ITE. This equipment is not limited in purchasing, but it has following warning in using instruction:

Warning: This is the Class A product. In family environment, this product can have radio interference; in this case, user can carry out suitable handling methods.

1.4.25. Ultra wide band communications equipment

Communications equipment has band bigger or equal to 500 MHz.

1.5. AbbreviateACK ACKnowlegementARQ Automatic Retransmission RequestCT Continuous phenomena applied to TransmittersCR Continuous phenomena applied to ReceiversEMC ElectroMagnetic CompatibilityEUT Under Test EquipmentNACK Not ACK KnowlegementRF Radio FrequencyTT Transient phenomena applied to TransmittersTR Transient phenomena applied to ReceiversUWB Ultra Wide Band

2. TECHNICAL REGULATION2.1. EMC emissionRequirement on emission complies with section 2.1 in QCVN 18: 2014/ BTTTT.

2.2. ImmunityRequirement on emission complies with section 2.2 in QCVN 18: 2014/ BTTTT

2.3. Testing condition

2.3.1. GeneralBeside common testing condition complies with Appendix A in QCVN 18:2014/BTTTT, particular testing condition for UWB communications equipment is showed in sections of A.2 to A.5Radio equipment can request software and/ or special testing install. Equipment requires connector to host equipment according to function having to use testing configuration proposed by manufacturer. In all cases, EUT shall be used corresponding to normal used purpose.

2.3.2. Arranging testing signal2.3.2.1. Arranging testing signal at transmitters inputAccording to section A.2.1 in QCVN 18: 2014/BTTTTWanted signal and/ or control needs to install information connection have to be defined by manufacturer. Transmitters have to work in biggest rated capacity.

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2.3.2.2. Arranging testing signal at transmitter outputAccording to section A.2.3 in QCVN 18: 2014/ BTTTTManufacturer can provide suitable receivers using for receiving records or installing information connection.2.3.2.3. Arranging testing signal at receivers inputManufacturer has to provide suitable transmitters can use to install connecting UWB information corresponding to used purpose of equipment. Wanted signal to install information connection have to be defined by manufacturer. Distance between transmitters and receiver is one meter, except to information scope is shorter than 1.5 meter. In this case, shorter distance can be used and be defined by manufacturer.2.3.2.4. Arranging testing signal at receivers outputEquipment testing output signal of tested receiver have to put outside testing environment. It has to have capacity of evaluating equipment standard by supervise suitably receiver output.If receiver has wanted terminal or output signal- provided port, this port shall be used with standard cable as normal operation when connecting to outside testing equipment out of testing environment. Testing equipment provided by manufacturer.Preventive methods have to be carried out to ensure minimize all affect to testing of coupling equipment.Manufacturer can provide attached suitable transmitters to transmit record or install information connection.

2.3.2.5. Arranging testing transmitters with receivers (as a system)Complies to section A.2.5 in QCVN 18:2014/BTTTTManufacturer can provide attached suitable transceiver or receivers and transmitters to send receiver record or install information connection.Both EUT and attached equipment is assigned testing normally. Besides, output of tested radio equipment has to be supervised by testing system.

2.3.3. Exclusive frequency rangeFrequencies operates normally on transmit part of EUT have to be exclusive from conduction immunity and radiation test when it is on transmit mode.It is not have exclusive frequency range applying to exclusive testing for receiver part of transceiver or receiver being testing independently, and/ or relevant ancillary equipment.Exceptions of exclusive testing relate to “exclusive frequency range” and defined in section A.3 in QCVN 18:2014/BTTTT.

2.3.4. Receiver narrowband response or receiver is a part of transceiverAccording to section A.5 in QCVN 18:2014/BTTTT

2.3.5. Modulating normal testingTesting modulation signal have to suitable to normal using purpose and can include format document, defined and corrected information.

2.4. Evaluating criterion

2.4.1. GeneralComplying to section B.1 in QCVN 18:2014/BTTTT

Working frequency ranges of equipment and if can be applied, working band; Equipment style, for example: independent or plug- in equipment; Host equipment to combine with tested radio equipment; Minimum standard level when applying EMC; (see criterion table in section 2.5.2);

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Modulating normal testing, formatting, correcting type and control signal, such as ACKnowledgement (ACK)/ Not ACKnowledgement (NACK) or Automatic Retransmission Request (ARQ).

2.4.2. Arranging the evaluation of equipment depend on host and plug- in cardFor equipment need to be integrated to host device to provide function, it has two choices in 2.4.2.1 and 2.4.2.2 can be used.

2.4.2.1. Choice A: Combination deviceCombination of radio equipment and specific host can be used for this evaluation according to this standard.When a particular combination of host and radio equipment is tested as a combined system in order to comply, not being repeated with testing for:

Other combination of host and radio part basing on similar host equipment on the basic which the change on mechanic characteristic and electric between host is not affect to intrinsic immunity and unexpected emission of radio equipment part;

Radio equipment part cannot be used if it has no change on mechanic, electric or software on different variation of host which had been proved comply with this standard.

For other combination, each of them has to be tested separately.

2.4.2.2. Choice B: Using fixture or host When radio equipment part is designed to use with many of host system, manufacturer have to provide suitable testing configuration including host system using for normal use or common testing fixture to host system that equipment can use. Testing fixture has to allow radio equipment being powered and activated by similar way as when connecting to or plug in host equipment.

2.4.3. Evaluating procedureEvaluating standard has to base on:

Remaining function(s); Cutting last function(s) which can be restore; Estimated operation of EUT

Testing system has to install connecting information in similar way as under test equipment (EUT) using normally.All data field determining user in data memory or storage of EUT must be filled in according to normal using.Evaluating procedure has to define information connection is remained and has not lose function of supervising user as declaration of manufacturer or lose recorded user defining document.

2.4.4. Ancillary equipmentComplies to section B.4 in QCVN 18:2014/BTTTT

2.4.5. Equipment sortingDeclared moving portable equipment, or equipment combination is fed from battery power of vehicle, it must be considered supplementary as mobile equipment on vehicle.Declared mobile or moving portable can be fed from mains, must be considered supplementary as a fixed station system.

2.4.6. Equipment cannot be installed continuous communications lineIf radio equipment is not making continuous communications line and/ or in case of ancillary equipment is tested independently, equipment’s manufacturer has to specify acceptable minimum quality level or quality decrease on and/ or after EMC testing process.

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Manufacturer specifies testing method to evaluate actual quality level or quality decrease on/ or after EMC measuring process. Manufacturer has to provide following supplementary information to record to testing report:Primary functions of relevant part of EUT on and after testing EMC;Needed functions of relevant parts of EUT has to suitable to attached using instruction document?Standards for evaluating relevant part of EUT;Method for supervising actual quality level and/ or actual quality decrease of EUTEvaluation of actual quality or actual quality decrease is carried out on/ or after testing EMC must be simple, but it has to give proof to convey that primary functions of equipment are working.

2.5. Quality standard

2.5.1. Common quality standardCommon quality standard including:

A quality standard to immunity testing with continuous phenomena; B quality standard to immunity testing with transient phenomena; C quality standard to immunity testing with electric power interruption exceeding certain time.

Equipment must satisfy minimum criterion as following section.

2.5.2. Standard tableTable C- Criterion

Criteria While testing After testingA Has to work as intended with permit of

decreasing standard (see Note 1)Do not lose functionDo not transmit with unintentionally

Has to work as intendedDo not decrease standard (see Note 1 and 2)Do not lose functionDo not lose recorded data or functions of programming user

B Can show lose function (one or more)Can show criterion decrease (see Note 1)Do not transmit with unintentionally

Functions have ability of self-restoreHas to work as intended after restoringDo not decrease criterion (see Note 1 and 2)Do not lose recorded data or functions of programming user

C Can do not lose function (one or more) Functions have to be restored by researcherHas to work as intended after restoringDo not decrease criterion (see Note 1 and 2)

NOTE 1: Decrease of standard on and after testing is considered as it being decrease to level that cannot lower than minimum standard level specified by manufacturer for using equipment as intended. In some cases, particular minimum standard level can be repeated by allowed standard decrease.If minimum standard level or allowed standard decrease is not specified by manufacturer, one of them can be showed on product description and document (includes leaflets and advertisement) and what users received from equipment if using as intended.NOTE 2: There is no change on actual working data or allowed restore data after testing

2.5.3. Criterion for continuous phenomena applied to transmitters (CT)Applying standard ATesting must be repeated to EUT in waiting state (if any) to make sure that unintentional transmission is not occur.In systems using acknowledgement signal, it can occur the transmission of acknowledgement (ACK) or not acknowledgement (NACK), and steps need to be carried out to ensure all transmission combined in testing application being exactly interpretation.

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2.5.4. Criterion for transient phenomena applied to transmitters (TT)Applying standard B, exception to 100ms continuous drop and cutting continuous to 5000ms, it must be apply standard C.Testing must be repeated to EUT in waiting state (if any) to make sure that unintentional transmission is not occur.In systems using acknowledgement signal, it can occur the transmission of acknowledgement (ACK) or not acknowledgement (NACK), and steps need to be carried out to ensure all transmission combined in testing application being exactly interpretation.

2.5.5. Criterion for continuous phenomena applied to receivers (CR)Applying standard AWhen EUT is the transceivers, in all cases, transmitters have to work unintentionally while testing.In systems using ACK signal, it is needed to satisfy that transmission of ACK or NACK can occur, and steps can be carried out to ensure all transmission combined in testing application being exactly interpreted.2.5.6. Criterion for transient phenomena applied to receivers (TR)Applying standard B, exception to 100ms continuous drop and cutting continuous to 5000ms, standard C must be applied.When EUT is the transceivers, in all cases, transmitters have to work unintentionally while testing.In systems using acknowledgement signal, it can occur the transmission of acknowledgement (ACK) or not acknowledgement (NACK), and steps need to be carried out to ensure all transmission combined in testing application being exactly interpretation.

3. MANAGING REGULATIONSUltra wide band UWB communications devices belong to adjusting scope at section 1.1 have to comply to technical regulation in this Regulation.

4. DUTY OF ORGANIZATION, INDIVIDUALRelevant organizations, individuals have responsible for performing regulations on legal certifying and declaring on ultra wide band communications devices and under testing of state management agencies according to current regulations.

5. EXECUTING ORGANIZATION5.1. Telecom Department and Ministries of Information and Communications have responsible for holding instruct to manage ultra wide band UWB communications devices according to this Regulation.

5.2. In the case of having amending, supplementing or replacing rules in this Regulation, performing to regulation at new writing./.

REFERENCE DOCUMENT DIRECTORY

[1] EN 301 489-33 (2009-2): Electromagnetic compatibility and Radio spectrum Matters (ERM); Electromagnetic Compatibility (EMC) standard for radio equipment and services; Part 33: Specific conditions for Ultra Wide Band (UWB) communications devices.

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