ETSI ETS 300 133-4 ed.2 (1997-11)
ElectroMagnetic Compatibility and Radio Spectrum Matters (ERM); Enhanced Radio Messaging System (ERMES); Part 4: Air interface specification
ElectroMagnetic Compatibility and Radio Spectrum Matters (ERM); Enhanced Radio Messaging System (ERMES); Part 4: Air interface specification
RE/ERM-RP04-007-4
Elektromagnetna združljivost in zadeve v zvezi z radijskim spektrom (ERM) – Izboljšani sistem za radijsko sporočanje (ERMES) – 4. del: Specifikacija radijskega vmesnika
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.YPHVQLNDElectroMagnetic Compatibility and Radio Spectrum Matters (ERM); Enhanced Radio Messaging System (ERMES); Part 4: Air interface specification33.100.01Elektromagnetna združljivost na splošnoElectromagnetic compatibility in general33.070.20Sistem za osebni klicPaging systemsICS:Ta slovenski standard je istoveten z:ETS 300 133-4 Edition 2SIST ETS 300 133-4 E2:2003en01-december-2003SIST ETS 300 133-4 E2:2003SLOVENSKI
STANDARD
EUROPEAN ETS 300 133-4TELECOMMUNICATION November 1997STANDARD Second EditionSource: ERM Reference: RE/ERM-RP04-007-4ICS:33.020Key words:Air interface, ERMES, paging, radioElectromagnetic compatibilityand Radio spectrum Matters (ERM);Enhanced Radio MEssage System (ERMES);Part 4: Air interface specificationETSIEuropean Telecommunications Standards InstituteETSI SecretariatPostal address: F-06921 Sophia Antipolis CEDEX - FRANCEOffice address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCEX.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: secretariat@etsi.frTel.: +33 4 92 94 42 00 - Fax: +33 4 93 65 47 16Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and theforegoing restriction extend to reproduction in all media.© European Telecommunications Standards Institute 1997. All rights reserved.SIST ETS 300 133-4 E2:2003
Page 2ETS 300 133-4: November 1997Whilst every care has been taken in the preparation and publication of this document, errors in content,typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to"ETSI Editing and Committee Support Dept." at the address shown on the title page.SIST ETS 300 133-4 E2:2003
Page 3ETS 300 133-4: November 1997ContentsForeword.5Intellectual Property Rights.61Scope.72Normative references.73Definitions, abbreviations and symbols.73.1Definitions.73.2Abbreviations.93.3Symbols.104Transmission protocol.104.1General description of the protocol.104.2Outline of the air interface model.124.2.1Information format L4.124.2.2Error correction coding L3.124.2.3Codeword interleaving L2.124.2.4Modulation L1.124.3Application of the model to the air interface.124.4Batch structure.124.5Subsequence lengths.144.6Version compatibility.144.6.1Compatibility mechanism.144.6.2Earlier versions.144.6.3Compatibility matrix.145Information format.145.1General.145.2Synchronization partition.155.3System information partition.155.3.1System information.155.3.1.1Format of the network information.155.3.1.2Format of the time slot information.165.3.2Supplementary system information.165.3.2.1Transmission of different SSIT values on a channel.165.3.2.2Supplementary system information field (SSIT = 0000).175.3.2.3Supplementary system information field (SSIT = 0001).175.3.2.4Supplementary system information field (SSIT = 0010).175.3.2.5Supplementary system information field (SSIT = 1101).185.3.2.6Supplementary system information field (SSIT = 1110).185.3.2.7Supplementary system information field (SSIT = 1111).185.4Address partition.185.5Message partition.185.5.1Message header.185.5.1.1Variable Information Field (VIF) (AII = 0).195.5.1.2Variable Information Field (VIF) (AII = 1).195.5.1.2.1Long messages (AII = 1, AIT = 000,001, 101 or 110).205.5.1.2.2Remote programming of pagerparameters (AII = 1, AIT = 010).215.5.1.2.3Miscellaneous (AII = 1, AIT = 100).225.5.1.2.4Common temporary address pointers(AII = 1, AIT = 111).225.5.2Additional information and external operator identity.225.5.3Message data.22SIST ETS 300 133-4 E2:2003
Page 4ETS 300 133-4: November 19975.5.4Message data.225.5.5Message delimiter.235.5.6Completion of message codeblocks.235.5.7Unused codeblocks.236Error correction coding.247Codeword interleaving.258Modulation.258.1General.258.2RF channels and channel numbering.258.3Modulation format.268.3.1Symbol alphabet.268.3.2Data rate and symbol rate.268.3.3Premodulation pulse shaping.278.3.4Paging receiver performance.288.3.5Transmitter performance.289Operation of the radio subsystem.289.1General.289.2Frequency subset indicator and frequency subset number.299.3Border area indicator.309.4External traffic indicator.309.5Examples of receiver operation.309.5.1Non-locking receivers.309.5.2Locking receiver.3110Paging message procedures on the air interface.3110.1General.3110.2Individual call procedure.3110.3Group call procedure.3210.4Handling of long messages.3310.5Messages continued in further batches in the same subsequence.3410.6Messages continued in further subsequences.3410.7Transmission of variable receiver parameters.3410.8Termination of message search.3410.8.1Individual calls.3410.8.2Group calls.3511Battery saving techniques.3511.1Batch level.3511.2Subsequence level.3511.3Cycle level.3511.4Sequence level.3612Synchronization.3612.1General.3612.2Synchronization between paging receiver and radio transmission.3612.3Synchronization between base stations.3712.4Co-ordination between networks.37History.38SIST ETS 300 133-4 E2:2003
Page 5ETS 300 133-4: November 1997ForewordThis second edition European Telecommunication Standard (ETS) has been produced by theElectromagnetic compatibility and Radio spectrum Matters (ERM) Technical Committee of the EuropeanTelecommunications Standards Institute (ETSI).This ETS comprises seven parts with the generic title "Electromagnetic compatibility and Radio spectrumMatters (ERM); Enhanced Radio MEssage System (ERMES)". The title of each part is listed below:Part 1:"General aspects";Part 2:"Service aspects";Part 3:"Network aspects";Part 4:"Air interface specification";Part 5:"Receiver conformance specification";Part 6:"Base station specification";Part 7:"Operation and maintenance aspects".This part, ETS 300 133-4, specifies the radio subsystem aspects including:-the transmission protocol and its operation;-modulation characteristics;-channel coding;-quasi-synchronous operation;-receiver battery saving techniques.NOTE:In this part of ETS 300 133, some protocol bits have been "reserved for futuredefinition". It is intended that these bits will be allocated for specific options in a futureenhanced version of this ETS.Suggestions for potential enhancements to the protocol using these bits should becommunicated via the normal ETS maintenance procedures to the ETSI Secretariat atthe address given on the title page.Transposition datesDate of adoption:7 November 1997Date of latest announcement of this ETS (doa):28 February 1998Date of latest publication of new National Standardor endorsement of this ETS (dop/e):31 August 1998Date of withdrawal of any conflicting National Standard (dow):31 August 1998SIST ETS 300 133-4 E2:2003
Page 6ETS 300 133-4: November 1997Intellectual Property RightsIPRs essential or potentially essential to this ETS may have been declared to ETSI. The informationpertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, andcan be found in ETR 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRsnotified to ETSI in respect of ETSI standards", which is available free of charge from the ETSISecretariat. Latest updates are available on the ETSI Web server (http://www.etsi.fr/ipr).Pursuant to the ETSI Interim IPR Policy, no investigation, including IPR searches, has been carried out byETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETR 314 (or theupdates on http://www.etsi.fr/ipr) which are, or may be, or may become, essential to this ETS.SIST ETS 300 133-4 E2:2003
Page 7ETS 300 133-4: November 19971ScopeThis European Telecommunication Standard (ETS), describes the requirements for air interfacespecification of the Electromagnetic compatibility and Radio spectrum Matters (ERM) Enhanced RadioMEssage System (ERMES). All aspects of the radio subsystem are defined including the transmissionprotocol, information format, channel coding and modulation characteristics. Operation of the radiosubsystem and procedures on the air interface are defined and described.2Normative referencesThis ETS incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text and the publications are listedhereafter. For dated references subsequent amendments to, or revisions of any of these publicationsapply to this ETS only when incorporated in it by amendment or revision. For undated references the latestedition of the publication referred to applies.[1]ETS 300 133-2 (1997): "Radio Equipment and Systems (RES); Enhanced RadioMEssage System (ERMES) Part 2: Service aspects".[2]ETS 300 133-5: (1997): "Radio Equipment and Systems (RES); EnhancedRadio MEssage System (ERMES) Part 5: Receiver conformance specification".[3]ETS 300 133-6: (1997): "Radio Equipment and Systems (RES); EnhancedRadio MEssage System (ERMES) Part 6: Base station conformancespecification".[4]ITU-T Recommendation E.212: "Identification plan for land mobile stations".[5]CEPT Recommendation T/R 25-07: "Frequency co-ordination for the EnhancedRadio MEssage system (ERMES)".[6]ETS 300 133-1: "Electromagnetic compatibility and Radio spectrum Matters(ERM); Enhanced Radio MEssage System (ERMES); Part 1: General aspects".3Definitions, abbreviations and symbols3.1DefinitionsFor the purposes of this ETS, the following definitions apply:associated operator: One of the network operators with which the home operator has an agreement toexclusively transfer calls.basic Radio Identity Code (RIC): The prime identity of a paging receiver allocated by the networkoperator when service is initiated. It can not be changed without safeguards against unauthorizedchanges.batch number: The 4 bit number corresponding to a particular batch type. Batch type A corresponds tobatch number 0000. Batch type P corresponds to batch number 1111.batch type: The letter (A to P) which identifies one of the 16 batches within a subsequence.character set indicator: Indicates which additional character set is to be used. The basic set defined inETS 300 133-2 [1], table B.3, is 00000.codeblock: Nine codewords interleaved as a unit as used in the message partition.codeword: The standard information unit of 30 bits length.country code: Binary representation of the country number defined in ITU-T Recommendation E.212 [4],annex A. The country code consists of 7 bits (see subclause 5.3.1.1).SIST ETS 300 133-4 E2:2003
Page 8ETS 300 133-4: November 1997End Of Message (EOM) character: A specific character used to indicate the end of an alphanumericmessage. It corresponds to DC1 as defined in clause B.3 of ETS 300 133-2 [1].external receiver: A receiver operating in a network which is not its home network.frequency divided network: A network that uses different frequency channels in adjacent paging areas.geographical area: One or several paging areas in an operator network. Defined by agreements betweennetwork operators for inter-network roaming or by a single operator for roaming within his own network. Itis used for roaming and choice of destination supplementary services.home network: The operator network with which a mobile subscriber has signed a subscription.home operator: The network operator to which a specific user has subscribed.initial address: The 18 most significant bits of the local address.I1 interface: The radio interface between the base stations and the paging receivers.I1 version number: The version number of the I1 interface. It consists of the Main Version Number(MVR1) and the Sub Version Number (SVR1) and is defined in ETS 300 133-1, annex B [6].I2 interface: An interface between the Paging Area Controller and the Base Station (BS).local address: The number used by a network to identify the receivers subscribed to it. It consists of22 bits. The four least significant bits of the local address denote the batch number of the receiver.long message: A message that has been split into two or more parts (sub-messages) for transmission.operator code: The number used by the system on the radio path to identify an operator within a country.It consists of 3 bits.operator identity: The number used by the system on the radio path to identify the home operator of areceiver. It has a total length of 13 bits and consists of three parts, the zone code, the country code andthe operator code.paging area: The area controlled by a Paging Area Controller (PAC). It is the minimum area to which amobile subscriber is permitted to subscribe in order to receive his paging messages.paging area code: The number used by the system to identify the paging area.paging area controller: Functional entity controlling the base stations within one paging area.paging message: The tone-only, numeric, alpha-numeric or transparent data information sent to a pagingreceiver.paging signal: The signal sent on the radio path to a paging receiver.radio identity code: The number used by the system on the radio path to identify the receiver(s) forwhich the paging message is intended. The RIC has a total length of 35 bits and consists of five parts: thezone code (3 bits), the country code (7 bits), the operator code (3 bits), the initial address (18 bits) and thebatch number (4 bits).Operator IdentityLocal AddressZoneCountryOperatorInitialBatchcodecodeCodeaddressnumberNo. of bits373184Figure 1: Radio identity codeSIST ETS 300 133-4 E2:2003
Page 9ETS 300 133-4: November 1997reserved for future definition: The bits indicated are not specified in this edition of the standard but maybe in future editions. The bits should be set to a default value of zero and not used to convey information.The function of any equipment is independent of these bits. No fixed pattern of reserved bits should beassumed and no combination of reserved bits should cause equipment to malfunction.roaming area: The geographical area where the mobile subscriber asks for his messages to betransmitted when he uses the roaming service.service area: The paging area(s) to which the mobile subscriber has subscribed and in which a pagingmessage will normally be transmitted.sub-message: Part of a long message. All sub-messages of any one long message carry the samemessage number.symbol: Two bits of information which are the basic unit of information on the air interface. It correspondsto one of the four modulation levels specified in subclause 8.3.1.time divided network: A network that uses the same frequency channel during different sub-sequences(periods of a time cycle) in adjacent paging areas.zone code: Binary representation of the zone number defined in ITU-T Recommendation E.212 [4],annex A. The zone code consists of 3 bits (see subclause 5.3.1.1).3.2AbbreviationsFor the purposes of this ETS, the following abbreviations apply:AIIAdditional Information IndicatorAIFAdditional Information FieldAINAdditional Information NumberAITAdditional Information TypeAPTAddress Partition TerminatorBAIBorder Area IndicatorBSBase StationCTACommon Temporary AddressCTAPCommon Temporary Address PointerEBExternal BitETIExternal Traffic IndicatorFSIFrequency Subset IndicatorFSNFrequency Subset NumberIAInitial AddressIVR1I1 version numberLSBLeast Significant BitMSBMost Significant BitMVR1I1 main version numberOPIDOperator IdentityPAPaging AreaPRPreamblePACPaging Area ControllerPAM/FMPulse Amplitude Modulated Frequency ModulationRFRadio FrequencyRICRadio Identity CodeRSVDReserved bits for future definitionSISystem InformationSMSubsequence MaskSSISupplementary System InformationSSIFSupplementary System Information FieldSSITSupplementary System Information TypeSSNSubsequence NumberSVR1I1 sub version numberSWSynchronization WordSYNSynchronization WordSYSSystem information partitionSIST ETS 300 133-4 E2:2003
Page 10ETS 300 133-4: November 1997UMIUrgent Message IndicatorUTCUniversal Time Co-ordinatedVIFVariable Information Field3.3SymbolsFor the purposes of this ETS, the following symbols apply:ENLNumber of Least Significant Bits (LSB) to be compared when operating outsidehome networkHNLNumber of LSBs to be compared when operating within home network4Transmission protocol4.1General description of the protocolThis ETS describes the version 02.01 of the air interface specification (I1).The structure of the basic transmission protocol on channel one (of channels numbered 1 - 16) isillustrated in figure 2.A sequence of 60 minutes total duration and comprising 60 cycles shall be provided. Sequences shall beco-ordinated with the Universal Time Co-ordinated (UTC) so that on the hour a new sequencecommences.A paging cycle of exactly one minute duration, co-ordinated with UTC, shall be used to allow thenecessary co-ordination between different networks. Receivers may listen to one or a few cycles in asequence in order to reduce battery consumption (see clause 11).Each cycle shall be divided into five subsequences commencing at 12 second intervals. To allowco-ordination between networks the Subsequence Number (SSN) = 0 subsequence shall always betransmitted first after the UTC minute marker.The transmission of a subsequence may end before the full 12 seconds has elapsed. The subsequencelength may be reduced by a small amount to allow for transmitter switching times. Occasionally a greaterreduction may be made in order that test or system transmissions can be made by individual transmitters.Each subsequence shall be further divided into 16 batches labelled A-P. The receiver population shouldbe divided into 16 groups and each receiver allocated to one of the 16 batch types according to the 4 leastsignificant bits of its basic RIC. Further RICs used by this receiver shall be of the same batch type.Each receiver shall only be initially addressed in its own batch type transmission. When the receiverdetects its initial address it should wait on the same channel for the message to be sent. The messagemay be sent in the same batch, in any subsequent batch of the same subsequence or in the followingsubsequence (see subclause 10.6 regarding time-out conditions).An initial address may be transmitted more than once in the same batch (see subclause 10.2).The time of transmission of a particular batch type on each frequency channel is shifted by a single timebatch with respect to the others as shown in figure 3. Consequently a receiver can, if necessary, stepthrough the paging frequency channels without losing any messages.The first fifteen batches in every subsequence shall have length 154 codewords. The final batch in everysubsequence shall have length 190 codewords. This is so that messages in time divided networks may becompleted within a subsequence.Each batch is further subdivided into four partitions. These are the synchronization, system information,address and message partitions. A detailed description of the batch structure is given in subclause 4.4and the contents of each partition specified in subclauses 5.2 to 5.5.SIST ETS 300 133-4 E2:2003
Page 11ETS 300 133-4: November 1997System Inform.partitionAddresspartitionMessagepartitionSynchroniationpartitionzSEQUENCE60 minutes60 cyclesCYCLE1 minute5 subsequenceSUBSEQUENCE12 seconds16 batchesBATCHFigure 2: Structure of the radio protocol on channel oneBBBBBBBBBBBBBBBBCCCCCCCCCCCCCCCCDEFDEFDEFDEFDEFDEFDEFDEFDEFDEFDEFDDDDEEEEEDFFFFFGHIJGHIJGHIJGHIJGHIJGHIJGHIJGHIJGHIJGHIJGHIJGHIJGHIJGHIGHGHIJIJJKLMKLMKLMKLMKLMKLMKLMKLMKLMKLMKLMKLMKLMKLMKLKLMMNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPOPPNONBBBBBBBBBBBBCCCCCCCCCCCCDEFDEFDEFDEFDEFDEFDEDDEFDDEEEEDFFFFFGHIJGHIJGHIJGHIGHGGHIJGHIJGHIJGHIJGHIJGHIJHIJIJJKLKKLMKLMKLMKLMKLMKLMKLMKLMKLMKLMLMMNNONOPNOPNOPNOPNOPNOPNOPNOPNOPNOPOPP02040608101214160115131109070503Chan12 seconds= Active batch for a type A receiverNOTE:The relation between Radio Frequency (RF) channel frequencies and channel numbers isdefined in subclause 8.2.Figure 3: Channel synchronization and the scanning procedureSIST ETS 300 133-4 E2:2003
Page 12ETS 300 133-4: November 19974.2Outline of the air interface modelThe air interface transmissions are organized in four levels:L4 - information format;L3 - error correction coding;L2 - codeword interleaving;L1 - modulation.4.2.1Information format L4Co-ordination of the basic paging system data and paging message data is performed at the formatinformation level. It is a way of arranging the transmitted data in a predefined format that will berecognized by the receivers.Throughout this ETS the bit transmission order shall be from left to right. Accordingly the Most SignificantBit (MSB), which is the left most bit, is transmitted first. The Least Significant Bit (LSB) is the right most bitand is transmitted last.4.2.2Error correction coding L3Forward error correction coding adds redundancy to the transmitted codewords so that after demodulationand de-interleaving transmission errors may be detected and corrected.4.2.3Codeword interleaving L2Interleaving is the technique to spread burst errors that occur on radio channels subject tomultipath/fading and impulsive noise. This is achieved by changing the order of bits in the transmitted datastream so that on reception any burst of errors that has occurred is spread over several codewords andthere is a chance that some or all of them may be corrected. This is further described in clause 7.4.2.4Modulation L1The function of the modulation level is to distribute by radio transmission the coded and formattedinformation from the base station transmitters to the paging receivers.4.3Application of the model to the air interfaceEach of the processing levels will be described in detail in the following clauses. Not all levels shall beapplied to all parts of the interface transmissions. This is best specified at the batch level (see figure 2)where the following shall apply:-synchronization partition: L1 & L4;-system information partition: L1, L3 & L4;-address partition: L1, L3 and L4;-message partition: L1, L2, L3 and L4.4.4Batch structureThe synchronization partition and system information partition are of fixed length. The boundary betweenthe address and message partitions can be altered depending on traffic type and density. The requirementfor codeword interleaving in the message partition imposes detailed constraints on the position of theboundary. As shown in clause 7 the protocol specifies codeword interleaving to a depth of ninecodewords. Hence messages shall be assembled and transmitted in blocks of 9 codewords (which arecalled codeblocks) and the address partition/message partition boundary positioned to allow this. Unusedcodewords within an address partition shall be filled with Address Partition Terminators (APTs) as definedSIST ETS 300 133-4 E2:2003
Page 13ETS 300 133-4: November 1997in subclause 5.4. Unused codewords within an interleaved message codeblock shall be filled withmessage delimiters as defined in subclause 5.5.4. Unused bits within a message codeword shall be filledas described in subclause 5.5.3. The detailed composition of a batch is shown in figure 4.PRSYNSISISSII ´ IAJ ´ APTK ´ CODEBLOCKSSYNCH PARTSYSTEM INFPARTITIONADDRESS PARTITIONMESSAGE PARTITIONFigure 4: Batch structureTable 1: Batch structure fieldsFieldFunctionDefinitionPRpreamble worddefined in subclause 5.2SYNsynchronization worddefined in subclause 5.2SIsystem informationdefined in subclause 5.3.1SSIsupplementary system informationdefined in subclause 5.3.2IAinitial addressdefined in clause 2APTaddress partition terminatordefined in subclause 5.4CODEBLOCKinterleaved messagesdefined in subclause 5.5Inumber of initial addresses0 £ I £ 139Jnumber of address partition terminators(see note 1)Knumber of codeblocks in the messagepartition(see note 2)NOTE 1:J = 9 - MOD{(4 + I),9)} where MOD {M, N} = M - N ´ INT(M/N) and INT returns theinteger part of a number.NOTE 2:K £ (149 - I - J)/9first 15 batches of a subsequence.K £ (185 - I - J)/9last batch of a subsequence.Typical values of parameters for the first 15 batches are:-I = 0, J = 5, K = 16;-I = 4, J = 1, K = 16;-I = 5, J = 9, K = 15;-I = 139, J = 1, K = 1.NOTE 2:K = 16 corresponds to the maximum number of messages; I = 139 to the maximumnumber of initial addresses.Typical values of parameters for the last batch are:-I = 0, J = 5, K = 20;-I = 4, J = 1, K = 20;-I = 22, J = 1, K = 18;-I = 139, J = 1, K = 5.NOTE 2:K = 20 corresponds to the maximum number of messages; I = 139 to the maximumnumber of initial addresses.SIST ETS 300 133-4 E2:2003
Page 14ETS 300 133-4: November 19974.5Subsequence lengthsThe length of a subsequence shall be 12 seconds (2 500 codewords).The duration of data transmission within the subsequence may, however, be less than this. In the casethat less than 2 500 codewords are transmitted the number of transmitted codewords shall be 2 500minus an integer multiple of 9 codewords.The minimum number of codewords that may be transmitted in a subsequence is zero, notwithstandingthe requirements of subclauses 9.1 and 5.4.The minimum reduction in subsequence transmission length that may be made is 1 codeblock(9 codewords (43,2 ms)).4.6Version compatibility4.6.1Compatibility mechanismThe I1 version number (IVR1) of the PNC-T shall be transmitted in the supplementary System Informationfield (see subclause 6.3.2) for PNC-T using IVR1 >= 02.01.When a pager has an IVR1 higher than or equal to the IVR1 of the network, the messages transmitted tothis pager are encoded according the IVR1 number of the network.When a pager has an IVR1 lower than or equal to the IVR1 of the network, the messages transmitted tothis pager are encoded according the IVR1 number of the pager.4.6.2Earlier versionsFor PNC-T using an IVR1 number lower than or equal to 01.01 the IVR1 number is not transmitted by thenetwork. A pager, with an IVR1 >= 02.01, having identified that the network does not transmit the IVR1number, shall decode the messages according IVR1 number 01.01.Pagers having IVR1 equal to 01.00 or 01.01 cannot decode the IVR1 number transmitted in the SSIF.However the PNC-T, using an IVR1 >= 02.01 will encode the messages in the pagers IVR1.4.6.3Compatibility matrixTable 2: Matrix of the I1 version transmittedNetwork IVR1Pager IVR1 =01.00Pager IVR1 =01.01Pager IVR1 >=02.01= 01.0001.0001.0001.00= 01.0101.0101.0101.01>= 02.0101.0101.01highest commonvalue betweenpager IVR1 andPNC-T IVR1NOTE:Draft ETS 300 133 edition 2 (January 1997) with IVR1 = 02.00was never published as an ETS.5Information format5.1GeneralEach batch consists of four partitions as illustrated in subclause 4.4. Details of how the paging data isorganized within each partition are defined in this clause.SIST ETS 300 133-4 E2:2003
Page 15ETS 300 133-4: November 19975.2Synchronization partitionEach batch shall commence with the synchronization partition which consists of two 30 bit words, whichare the preamble and the Synchronization Word (SW).The preamble may be used to obtain bit synchronization.The preamble word shall be:00 10 00 10 00 10 00 10 00 10 00 10 00 10 00 (30 bits).The synchronization word may be used to obtain code word synchronization.The synchronization word SW1 shall be:10 00 10 10 00 10 00 00 10 10 00 00 10 10 10 (30 bits).Alternative synchronization words may be used in future versions of the protocol.5.3System information partitionNetwork operator and system operational information is transmitted in the system information partition.The system information partition is divided into two consecutive parts - system information andsupplementary system information with the system information transmitted first.5.3.1System informationThe system information part shall comprise the elements shown in figure 5.Country codeOperator codePA codeETIBAIFSICycle No.SSNBatch No.7 bits3 bits6 bits1 bit1 bit5 bits6 bits3 bits4 bitsFigure 5Table 3FieldFunctionSubclauseCountry Codeof the transmitting network.Operator Codecode of the network operator.5.3.1.1PA codepaging area code.Cycle No.SSNsubsequence number5.3.1.2Batch No.ETIExternal traffic indicator:0: external traffic will not be initially addressedin this batch;1: external traffic will be initially addressed inthis batch.9.4BAIBorder area indicator:0: indicates non border area;1: indicates border area9.3FSIFrequency subset indicator.9.25.3.1.1Format of the network informationZone and country numbers are based on ITU-T Recommendation E.212 , annex A [4]. A unique numberconsisting of 3 digits shall be allocated to each country or area. The first digit denotes the zone to whichthe country belongs. The last two digits indicate the country itself.SIST ETS 300 133-4 E2:2003
Page 16ETS 300 133-4: November 1997The first digit (zone number) shall be coded with 3 binary bits and sent as supplementary systeminformation at least once per hour to every pager (see also clause 11). These bits represent the zonecode. The last two digits shall be coded with 7 binary bits. These bits represent the country code.Three bits are used to define up to 8 different operators within each country. (Additional codes may beprovided by the use of country codes that are not currently allocated to any country).Six bits are used to define one of up to 64 paging areas within a paging network.5.3.1.2Format of the time slot informationEach batch type transmission shall be identified on the radio channel by a four bit binary number. Thenumber shall correspond to a simple alphabet to binary number translation. Thus batch type Acorresponds to batch number 0000, batch type P to batch number 1111.A three bit binary representation of the decimal numbers 0, 1, 2, 3, 4 shall be used to identify thesubsequence numbers.A six bit binary number shall be used to identify the cycle numbers 0, 1, 2 to 59, with the correspondingbinary representations being 000000, 000001, 000010, to 111011.5.3.2Supplementary system informationThe supplementary system information part shall take the form shown in figure 6.SSITSSIF4 bits14 bitsFigure 6Table 4SSITsupplementary system information type.0000zone/hour/date;0001
day/month/year.0010
PNC-T IVR1 number1101
Not to be used and not transmitted1110
Not to be used and not transmitted1111
Not to be used and not transmittedAll other values of SSIT shall be reserved for future definitionSSIFsupplementary system information field.5.3.2.1Transmission of different SSIT values on a channelThe PNC-T shall cycle on each channel all the 13 allowed SSIT values, transmitting at each batch theSSIT value following (modulo 13) the SSIT value transmitted at the previous transmitted batch on thesame channel.The SSIT value next to 1100 is 0000.On a time divided network, the PNC-T shall ignore the inactive subsequence and consider the activesubsequence as being adjacent. If it was transmitting SSIT = 0011 on the last batch of a subsequence, itshall transmit SSIT = 0100 on the first batch of the next subsequence, whether the subsequence werecontinuous or not.A pager needing to get all SSIT values of a network on a channel may listen to all batches of asubsequences of this channel.SIST ETS 300 133-4 E2:2003
Page 17ETS 300 133-4: November 1997The pager shall be able to update the values when listening to the SSI field of its own batch regardless ofits subsequence mask ENL and HNL.5.3.2.2Supplementary system information field (SSIT = 0000)The supplementary system information field shall take the form shown in figure 7.ZoneHourDateRSVD3 bits5 bits5 bits1 bitFigure 7Table 5FieldFunctionZonezone number (see subclause 5.3.1.1).HourLocal hour.Hours shall be numbered from zero (00000) to 23 (10111).DateLocal date.Day of the month shall be numbered from one (00001) to 31 (11111).RSVDReserved for future definition (see clause 3).5.3.2.3Supplementary system information field (SSIT = 0001)The supplementary system information field shall take the form shown in figure 8.DayMonthYear3 bits4 bits7 bitsFigure 8Table 6DayLocal day of week.Days shall be numbered 1 to 7. Day 1 (001) shall be Monday.MonthMonths shall be numbered 1 to 12.Month 1 (0001) shall be January.YearYear zero (0000000) shall be 1990.5.3.2.4Supplementary system information field (SSIT = 0010)The supplementary system information field shall take the following form:MVR1SVR17 bits7 bitsMVR1:Main version number of the PNC-T
I1 interfaceSVR1:Sub version number of the PNC-T
I1 interfaceFigure 9Table 7MVR1SVR1Example of IVR1: 02.0100000100000001SIST ETS 300 133-4 E2:2003
Page 18ETS 300 133-4: November 19975.3.2.5Supplementary system information field (SSIT = 1101)This value shall never be used or transmitted.5.3.2.6Supplementary system information field (SSIT = 1110)The value shall never be used or transmitted.5.3.2.7Supplementary system information field (SSIT = 1111)The value shall never be used or transmitted.5.4Address partitionAn address partition shall be provided in each of the batches A-P in a subsequence.The address partition of a particular batch shall contain the initial addresses of the receivers to beaccessed and which belong to that particular batch type. See subclause 10.6 for a definition of thetime-out periods.The address partition shall be of variable length up to a maximum of 140 codewords. It shall comprise anintegral number of initial addresses. The minimum content of the address partition shall be no addressesand five Address Partition Terminators (APTs).The addresses in a particular batch shall be arranged so that the highest initial address is sent first andothers sent in descending order.The address partition shall be terminated with an Address Partition Terminator (APT). This terminatorshall be sent even if there are no addresses in the address partition. APTs may also be used as fillercodewords as described in subclause 4.4.The address partition terminator shall be:10 01 00 11 10 00 01 10 00 10 00 11 10 01 005.5Message partitionThe message partition shall consist of messages separated by message delimiters. Each messagepartition shall comprise an integer number of codeblocks as described in subclause 4.4.Each message shall consist of a fixed length message header (36 bits) which may be followed by theexternal operator identity, an additional information field and the message data.5.5.1Message headerThe fixed length message header shall take the form shown in figure 10.Local AddressMessageNumberExternal bitAIIVIF22 bits5 bits1 bit1 bit7 bitsFigure 10SIST ETS 300 133-4 E2:2003
Page 19ETS 300 133-4: November 1997Table 8Local Addressfull local address of the called receiver.Message Numbernumber of message to a particular receiver:for an individual call the initial value shall be 00001;for group calls the reserved dummy value 00000 shall be used. Thereserved dummy value may also be used when the messagenumbering is deactivated.External Bitindicates if a local or an external receiver is addressed:0: addressed receiver is in its home network;1: external receiver is addressed.AIIAdditional Information Indicator:0: additional information will not be sent;1: additional information will be sent.VIFVariable Information Field.5.5.1.1Variable Information Field (VIF) (AII = 0)The VIF shall take the form shown in figure 11.RSVDPagingCategoryUMIALERT1 bit2 bits1 bit3 bitsFigure 11Table 9RSVDReserved for future definition (see clause 3).Paging Categoryof the transmitted message:00 tone;01 numeric;10 alphanumeric;11 transparent data.UMIUrgent Message Indicator:0 normal message;1 urgent message.ALERTAlert signal indicator for different types of alert:000: type 0;001: type 1;010: type 2;011: type 3;100: type 4;101: type 5;110: type 6;111: type 7.5.5.1.2Variable Information Field (VIF) (AII = 1)The VIF shall take the form shown in figure 12.AITAIN3 bits4 bitsFigure 12SIST ETS 300 133-4 E2:2003
Page 20ETS 300 133-4: November 1997Table 10AITAdditional information type:000: Long message without additional character set - First submessage;001: Long message without additional character set - Other submessage;010: Remote programming of pager parameters;011: Reserved;100: Miscellaneous;101: Long message with additional character set - Other submessages;110: Long message with additional character set - First submessage;111: Common Temporary Address Pointers (CTAPs).AINAdditional information number (defined in the following subclauses).5.5.1.2.1Long messages (AII = 1, AIT = 000, 001, 101 or 110)Table 11AINFunction0000non-urgent alert type 00001non-urgent alert type 10010non-urgent alert type 20011non-urgent alert type 30100non-urgent alert type 40101non-urgent alert type 50110non-urgent alert type 60111non-urgent alert type 71000urgent alert type 01001urgent alert type 11010urgent alert type 21011urgent alert type 31100urgent alert type 41101urgent alert type 51110urgent alert type 61111urgent alert type 7The Additional Information Field (AIF) associated with this Additional Information Type(AIT) (see subclause 5.5.2) shall comprise 2 bits for paging category (defined in subclause 5.5.1.1)followed by 16 bits specifying the message length.Long messages with additional character set:For long messages with additional character set, the Additional Information Number (AIN) shall be asdefined above in this subclause. The associated AIF (see subclause 5.5.2) shall comprise 2 bits for thepaging categ
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...