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Siemens BS-240, Technical Description

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Summary of Contents for BS-240

Page 1: ...Information Base Station System Technical Description TED BSS BS 240 241 A30808 X3247 L14 2 7618 ...

Page 2: ...und warten Caution This equipment has been tested and found to comply with EN 301489 Its class of conformity is defined in table A30808 X3247 X910 7618 which is shipped with each product This class also corresponds to the limits for a Class A digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipmen...

Page 3: ...40 241 Reason for Update Summary Second Edition for Release BR7 0 Details Chapter Section Reason for Update All New Release BR7 0 Revised Chapter Issue History Issue Number Date of issue Reason for Update 1 07 2003 First Edition for new Release BR7 0 2 12 2003 Second Edition for Release BR7 0 ...

Page 4: ...4 A30808 X3247 L14 2 7618 Technical Description TED BSS BS 240 241 Information Base Station System ...

Page 5: ...3 7 Filter Combiner FICOM 38 3 8 Tower Mounted Amplifier TMA 38 3 9 High Power Duplexer Unit HPDU 39 3 10 DC Panel DCP 39 3 11 Alarm Collection Terminal ACT 39 3 12 AC DC Converter AC DC 40 3 12 1 DC and Battery Controller DCBCTRL 41 3 13 Overvoltage Protection and Tracer OVPT 41 3 14 Abis Connection Module ABISCON 41 3 15 Abis Link Equipment LE 42 3 16 Cover Parts 42 3 17 Backup Battery BATTERY 4...

Page 6: ...scription TED BSS BS 240 241 Information Base Station System 4 3 1 Functionality 63 4 4 FCC Issues for US Market only 65 5 Power Supply and Battery Backup 67 5 1 Support of Emergency Operation for 3rd Party BBU System 67 6 Abbreviations 69 ...

Page 7: ...agram 31 Fig 3 7 Principal Data Flow on SIPRO 32 Fig 3 8 EPATRX and ESIPRO Function Block Diagram 34 Fig 3 9 Data Flow in ESIPRO 36 Fig 3 10 Alarm Collection Terminal ACTM and ACTP 40 Fig 3 11 Example of Battery Backup Systems Connected to the AC DC 43 Fig 4 1 Overview of Combining Options 45 Fig 4 2 DUAMCO 2 2 47 Fig 4 3 DUAMCO 4 2 47 Fig 4 4 DUAMCO 8 2 48 Fig 4 5 FICOM 8 1 49 Fig 4 6 DIAMCO 50 F...

Page 8: ...s and Modules 24 Tab 3 2 GMSK 8PSK Linear Modulation 33 Tab 4 1 Insertion loss of DUAMCOs FICOMs HPDU and TMA 52 Tab 4 2 Parameters of DUAMCO DIAMCO 54 Tab 4 3 Parameters of 900 MHz Tower Mounted Amplifier 55 Tab 4 4 Parameters of 1800 MHz Tower Mounted Amplifier 56 Tab 4 5 Parameters of 900 1800 MHz Tower Mounted Amplifier 57 Tab 4 6 Maximum RF Power Output Values 65 Tab 4 7 Maximum RF Power Outp...

Page 9: ...and the flexible internal structure enables the BS 240 241 to provide new GSM features such as EDGE this platform ensures that network evolution is as smooth as possible The use of the latest technology reduces power consumption and improves reliability the reliability is also increased by the redundancy of all core modules Easy integration is possible in the already installed sites for the backwa...

Page 10: ...d complete area This feature can be used in omnicells as well as in multicells with sectors The following combining options are supported Antenna combining with CU pairs to apply transmission diversity time delay Antenna combining with duplexers DUAMCO can be applied for 2 4 and 8 carriers RF amplifier and multicoupler for the RX path are integrated Antenna combining with Filter Combiners FICOM is...

Page 11: ... TCH on Um interface Handling of 4x 2x8 kbit s onto one 64 kbit s timeslot for half rate TCH on Um inter face Drop and insert feature on 2 Mbit s E1 and 1 5 Mbit s T1 links is available on a 16 kbit s and a 64 kbit s basis Star loop and multidrop chain connections Cross connect function Change of PCM line configuration from star to multidrop or loop and vice versa is possible without any interrupt...

Page 12: ...umption 1600 W 1750 W Weight of Basic Rack empty ca 60 kg 132 Lbs ca 60 kg 132 Lbs Weight of Shelter empty ca 110 kg 242 Lbs Weight of Service1 Rack equipped with 1 Frame AC DC incl 6 AC DC Modules ca 27 kg 60 Lbs 1 Frame for Battery incl 1Battery 48V 85 Ah ca 140 kg 309 Lbs 1 Mounting Kit for Link Equipment incl 1 Frame NTPM Frame for Fan Unit and two FAN s ca 16 kg 35 Lbs 1 Rack ca 60 kg 132 Lbs...

Page 13: ...0 indoor BS 241 outdoor Tab 1 1 Technical Data Frequency Band Uplink MHz Downlink MHz GSM 850 824 2 848 8 869 2 893 8 P GSM 900 Primary 890 2 914 8 935 2 959 8 E GSM 900 Extension 880 2 914 8 925 2 959 8 R GSM 900 Railway 876 2 914 8 921 2 959 8 GSM RE 900 Railway Extension 876 2 901 0 921 2 946 0 GSM 1800 1710 2 1784 8 1805 2 1879 8 GSM 1900 1850 2 1909 8 1930 2 1989 8 Tab 1 2 Frequency Bands ...

Page 14: ... 900 with its different deviates GSM 1800 GSM 1900 and standards selected for mobile communication systems Moreover the architecture of BS 240 241 provides maximum flexibility to develop large and small BTSs which have similar costs per TRX Fig 2 1 shows the Base Rack Cabinets Fig 2 1 BS 240 Indoor Cabinet and BS 241 Outdoor Cabinet Base Racks The BTS functional blocks of the BS 240 241 are shown ...

Page 15: ...FICOM DIAMCO H P D U 4xTX RX RXDIV 4xTX RX RXDIV ACTC ACTP LE 0 LE 1 BATTERY TMA DCB ACP CTRL ACTC FAN Cell 0 Cell 1 FICOM DIAMCO 4xTX 4xTX RX RXDIV Cell 1 RX RXDIV RX RXDIV ACTC ACTP FAN to next ext rack RXCA1 RXCA0 BATTERY DCB CTRL AC DC AC DC DCP DCP DCP Extension Rack Cascading DUBIAS COBA 2 PCM Ext Sync 2 PCM 4 PCM Abis Sync Abis TMA FAN TMA TMA O V P T O V P T not present in case of BTSE wit...

Page 16: ...lines of the serial link All alarms beside the alarms that are generated in the core and in the CU boards are transported via the CAN bus Alarms of the CU boards are transmitted via CC Link Core boards use their interface bus The carrier unit s provide all analog and digital signal processing including a RF power stage necessary to process a single carrier e g GSM 8 TCHs The carrier unit s inter f...

Page 17: ...0 and COBA1 COSA1 have link interfaces to the ABIS lines but only one the active CORE can be connected On the backplane of the BTS one connector provides a link of the LMT to the current active CORE In the case of a CORE switch over the switch logic switches that connector to the new active CORE The same holds for the CAN bus alarm bus i e both COREs have the same CAN bus address where at any time...

Page 18: ...rovides a communication interface between the two main processors mP The switch logic is a flip flop distributed over the two COREs It manages the HW part of a switch over and enables the COREs to know about their states as active passive The CLK of the active CORE is connected with the one on the passive CORE It allows the passive CLK to be synchronized to the active one NOTE the redundancy is im...

Page 19: ...5 3 dBm 46 0 dBm 34 W 39 5 W The mentioned data are guaranteed from Module Factory Test only The typical output power at CU output is for GSM 900 47 3 dBm GSM 1800 45 7 dBm To verify the typical output power values in field measurements the tolerance value of the used measurement equipment environmental conditions and GSM 05 05 specifica tions have to be considered Modulation Output Power dBm Outp...

Page 20: ...in the proprietary sense that realizes then the performance of a 24 TRX BTSE as shown in Fig 2 4 and Fig 2 5 Fig 2 4 BS 240 Base Rack and 2 Extension Racks ACOM 0 ACOM 1 ACOM 2 ACOM 3 DC PANEL ACT C CU 2 CU 3 CU 6 CU 7 MUCO 0 MUCO 1 CU 0 CU 1 CU 4 CU 5 BS 240 SIEMENS ACOM 0 ACOM 1 ACOM 2 ACOM 3 CU 2 CU 3 CU 6 CU 7 MUCO 0 MUCO 1 CU 0 CU 1 CU 4 CU 5 BS 240 SIEMENS COBA 0 COSA 0 COBA 1 COSA 1 FAN 0 F...

Page 21: ...rames are housed in the same Service Rack thus there are two basic kinds of the Service Rack one being connected to the AC mains Service1 Rack and one being connected to DC only Service2 Rack CU 2 CU 3 CU 6 CU 7 MUCO 0 MUCO 1 CU 0 CU 1 CU 4 CU 5 BS 241 SIEMENS COBA 0 COSA 0 COBA 1 COSA 1DC PANEL ACT C FAN 0 FAN 1 FAN 2 FAN 3 FAN 4 FAN 5 ACOM 0 ACOM 1 ACOM 2 ACOM 3 CU 2 CU 3 CU 6 CU 7 MUCO 0 MUCO 1...

Page 22: ...e g 5 5 5 configurations and diversity reception with more than 8 TRX Thus a maximum of 2 RF cables cascading are connected between two Racks There is no TX combining over Rack borders thus the TRXs of different Racks is combined on air only Some configurations are not possible with 2 Racks only e g 5 5 5 with FICOM because of the number of available ACOM slots AC SIEMENS DC PANEL ACT C SIEMENS FA...

Page 23: ...S BS 240 241 Fig 2 7 BS 240 241 fully Equipped with 24 Carriers For the BS 241 outdoor cabinet only one type of the Shelter exists to be used for all outdoor Base Shelter Extension Shelters Service1 and Service2 Shelters Extension Rack Base Rack Service1 Rack Service2 Rack Extension Rack ...

Page 24: ...d HPDU working in shifted primary GSM band are available A Diplexer can be used in all cases where GSM 900 and GSM 1800 GSM 1900 or GSM 850 and GSM 1800 GSM 1900 Feeder Cables have to be installed in parallel Alarm collection modules ACTC part of DC Panel ACTM ACTP Alarm collection terminals no ACTC is equipped in every Rack Shelter ACTM can be equipped only in the Base Rack Shelter ACTP can be eq...

Page 25: ...lane The following picture gives an idea of the slot configurations Cover Parts CP ACOM CP CU CP AC DC CP DIAMCO CP COBA COSA CP ACT CP HEX Cover Parts have to be inserted if the respective active module is not needed in a configuration no the air flow inside the Frame or Shelter is not affected Battery Backup Battery systems no up to 4 Battery systems can be equipped only in the Service1 or Servi...

Page 26: ...the Core and its redundancy ports can only be switched to the same wires Only one transceiver at the same time is allowed to be switched to the same wires no simultaneous transmitting receiving of Core and its redundancy on the same Abis port possible To find the physical place of a Abis interface CU out of the logical memory map address appropriate configuration rules are created and considered T...

Page 27: ...is and CUs CC Link For interface and feature extensions the COBA can be expanded with one satellite COSA To fulfill the CORE redundancy aspects the COBA board with its satellite COSA board can be duplicated In this case one CORE COBA COSA is providing service and works as the master and the other CORE is cold standby or is disabled if HW prob lems have occurred The redundancy switch is controlled ...

Page 28: ...r not In case of redundancy switch overs no warm up and only a short synchronization phase because of effects at the switch over of the redundant ACLK is necessary The loadable timing generation hardware LTG is implemented in a FPGA device which can be loaded by the BCC with the current hardware function In this stage all neces sary system clocks and the master sync pulse are generated Also the ma...

Page 29: ...nd transmit circuitry for PCM30 and PCM24 data and clock recovery frame alignment synthesis line supervision timing adaptation to BISON Data arriving from the Abis Interface via a PCM port can be switched non blocking and bitwise 8 kbit s and n x 8 kbit s data rate possible with the BISON to another PCM Port or via a SELIC to a CU The Route Clocks of one FALC can be switched with the Route Clock m...

Page 30: ...gnal Processing Unit SIPRO Power Supply Unit PSU There are four variants of CU for the frequency bands GSM 850 R GSM 900 GSM 1800 and GSM 1900 The differences of the variants arise mainly on the sub unit PATRX Fig 3 5 Carrier Unit Block Diagram Power Amplifier and Transceiver Unit PATRX PATRX provides the main analogue functions of the CU receives the two diversity RF signals from the antenna comb...

Page 31: ...cated on SIPRO Analogue to digital conversion IF Digital to analogue conversion baseband Local clock of CU Due to the analogue functions SIPRO is specific for the different frequency variants There are two types of SIPROs one for GSM 850 GSM 900 one for GSM 1800 GSM 1900 Fig 3 7 illustrates the principal data flow on SIPRO receives two diversity IF signals from the receiver then analogue to digita...

Page 32: ...he analogue circuitry and 3 35V for the digital circuitry from a 48V primary input voltage The PSU is mechanically incorporated in the CU 3 3 EDGE Carrier Unit The ECU unit is a modified CU using the same interfaces as CU but supporting EDGE functionality in uplink and downlink In downlink direction the signalling and traffic data are received from the Core and converted into GMSK or EDGE modulate...

Page 33: ...art adaptive filter function Depending on the level of a co channel interference source the receive signal passes through an adaptive filter with variable bandwidth The filter bandwidth narrows with increasing interference level allowing for best receiver performance under a variety of traffic conditions The quality of service QoS in the uplink greatly benefits from this feature which can efficien...

Page 34: ...also provides the levelling of the output power The obtained RF signal is then power amplified by the module EPWRST and transmitted to the antenna combining equipment A part of the transmitted power is fed to the module PWRDET which performs the power detection This signal is used to close the digital power loop The Predistortion Receiver PDRX down converts the transmit signal to the TX IF for the...

Page 35: ...of the principal data flow see Fig 3 9 In uplink direction an IF signal with a frequency of more than 100 MHz arrives from ERXA at the ADC Analog Digital Converter The ADC output is processed by a DDC Digital Down Converter The DDC transforms the signal into baseband and filters the useful part of the signal The quasi analog signal at the output of the DDC is converted into bits with reliability i...

Page 36: ...ly modified version of the PSU of the GSM CU In this document not all Interface names are changed to EPSU Therefore PSU can be seen as a synchronym for EPSU in this document Main differences between ECU and CU The following major changes to the CU HW were made to support the EDGE function ality 1 New Power Amplifier with better linearity and approximately 3 dB higher peak power capability 2 New po...

Page 37: ...th which consists of an isolator which protects the PAs Power Amplifiers inside the CUs from each other in order to assure the required intermodulation suppression a hybrid coupler which provides the reference signal for dynamic and static power control The corresponding not transmitted power is terminated in a load including a heat sink for DUAMCO 4 2 and DUAMCO 8 2 an ASU Antenna Supervision Uni...

Page 38: ...cies in downlink direction TX in one Rack For the uplink direction RX the DIAMCO has to be used to filter and distribute the received signals to the Carrier Units The FICOM consists of remote tunable narrowband filters TNF The advantage of this filter combining technique is the very low insertion loss if e g 8 transmitters are combined to one antenna In principle the FICOM offers the following fun...

Page 39: ... 3 10 DC Panel DCP The DC Panel contains the circuit breakers to protect the DC power lines for the modules the ACTP FAN units HEX LE units and the ACTC where the Rack Shelter alarms will be connected The temperature sensor is integrated in the ACTC The front panel of the DC Panel for the Base Rack or shelter carries the connector for the Local Maintenance Terminal LMT 3 11 Alarm Collection Termin...

Page 40: ...s adapted to the actual need for specific loads each 720W 48VDC N 1 redundancy to achieve 3600W 720W one controller board DCBCTRL for battery supervision rectifier supervision alarm interface see section 3 12 1 two LVD relays for Frame The Service Rack Shelter with two AC DC Frames is intended to be used to supply BS240 241 with more than 8 carriers 1 Door 6 Fan 7 Alarms Temp Sens CAN Bus Node Con...

Page 41: ... OVPT The OVPT is responsible for lightning protection of the PCM24 PCM30 ports of the Abis interface and the external synchronization clock input of the BS 240 241 against over voltage Additionally the OVPT provides interfaces to connect PCM tracers without interruption for monitoring the Abis lines The OVPT is located outside the EMI shield in order to terminate possible overvoltages before it e...

Page 42: ...ice Rack Shelter If radio transmission is required microwave equipment must be used Also direct connections of PCM24 30 links are possible The number of Link Equipment which can be installed depends on the height of the Link Equipment 3 16 Cover Parts All unequipped slots in the Frames of a Rack Shelter must be equipped with Cover Parts to reach a balanced airflow If the complete Frame is empty it...

Page 43: ...ch Frame The fans used are able to overcome the pressure drop caused by the system resistance taking into account additional losses caused by adequate filters or Heat Exchangers used in order to establish an airflow that limits the T Temperature difference between critical hotspots inside the Rack and the ambient temperature caused by the specific power dissipation of that hotspot Battery 0 Base F...

Page 44: ... board and CAN Bus in case of an Extension Service Rack Shelter 3 19Heat Exchanger HEX The BS 241 shelters can be equipped either with HEX The heat exchangers can only be equipped on the internal side of the door of the BS 241 shelter The task of a heat exchanger is to transport the heat from inside the shelter to the outside For every Frame in a base or extension shelter one heat exchanger is nee...

Page 45: ... carrier numbers per cell 5 filter combining becomes advanta geous with respect to insertion loss but suffering from higher cost and incompatibility to synthesizer frequency hopping Nevertheless for urban sites where the cell sites are usually small a configuration with a DUAMCO 8 2 supports synthesizer frequency hopping and there is no need for addi tional antennas Fig 4 1 the different combining...

Page 46: ...nal The selected mode can be read by O M SW via CAN bus interface The transmit path consists of isolators a hybrid coupler with load for some modules and an ASU Antenna Supervision Unit The isolators have to protect the PAs Power Amplifiers inside the CUs from each other in order to assure the required intermodula tion suppression Two different hybrid couplers 2 1 4 1 combine up to 4 carriers to o...

Page 47: ...AN DC interf TMA DC DC TMA Signall Rx Tx ASU LNA RXCA to Rx from Tx AMCO MUCO AMCO MUCO LNA LNA bus Bias TEE Bias TEE Module 0 Module 1 Antenna 0 Antenna 1 Antenna 0 Rx Tx ASU LNA RXCA to Rx from Tx Control CAN bus DC interf TMA DC DC TMA Signall Rx Tx LNA RXCA to Rx from Tx Antenna 1 Coupler to from core ASU Coupler AMCO MUCO AMCO MUCO LNA LNA BIAS TEE BIAS TEE Module 0 Module 1 ...

Page 48: ...y be used with baseband frequency hopping as retuning of the TNF frequency requires up to 5 seconds But for a large number of carriers 6 or 8 baseband frequency hopping has only a negligible disadvantage compared to synthesizer frequency hopping FICOM Modularity The FICOM functions are carried out by two different types of modules These are Base module 2 1 Expansion module 2 1 Each type of module ...

Page 49: ...to combine 8 frequencies in downlink direction TX in one Rack The receive filters provide the substantial part of the receive band filtering required by GSM 05 05 11 21 and JTC J STD 007 The LNA takes care of a low system noise figure and consists of two branches In case of malfunction of one amplifier the RX gain of the DIAMCO decreases by about 6 dB The power splitter distributes the received ba...

Page 50: ...tment is only done once during the installation of the BTSE by the service personnel The selected mode can be read by O M SW via CAN bus interface Due to the fact that TMA status information is available for the DIAMCO processor the DIAMCO itself has to switch the RX mode according to the TMA status Each TMA can be switched on or off by a separate switch This cannot be configured via O M SW For Ra...

Page 51: ...the inner side wall and the Frame in the shelter For the main RX path one HPDU per cell is installed For diversity operation a second receive path has to be installed In one Base or Extension Rack Shelter one or two HPDUs can be installed and a maximum of 8 carriers can be connected to one HPDU Fig 4 7 shows the standard configuration for one cell using HPDU FICOM and DIAMCO for up to 8 carriers i...

Page 52: ...n all cases where GSM 900 and GSM 1800 GSM 1900 or GSM 850 and GSM 1900 Feeder Cables have to be installed in parallel This is e g the case where an existing GSM 900 network will be extended by a GSM 1800 or GSM 1900 network to implement a Dual Band Network 4 1 1 Typical Combiner Losses TX path and Output Power Level TMA TMA DUBIAS HPDU TX RX RX FICOM CU0 CU1 CU7 DIAMCO RX0 RX1 RX7 Antenna Antenna...

Page 53: ...ion TED BSS BS 240 241 i DUAMCOs operating with the minimum guaranteed input power from CU GSM 850 GSM 900 n x 50 W GSM 1800 GSM 1900 n x 35 W i The typical value for the insertion loss of FICOMs is better than 3 dB with an uncritical carrier configuration carrier spacing 1 MHz ...

Page 54: ...dB 1 dB Gain ANT RXCA 0 5 dB 1 dB 0 5dB 1 dB Gain ripple 0 8 dB 0 8 dB Attenuator characteristics Attenuator range 0 6 dB 0 5 dB 0 6dB 0 5 dB Step size 1 dB 0 3 dB 1 dB 0 3 dB DIAMCO gain E GSM GSM 1800 AMCO characteristics Gain ANT RX 20 dB 1 5 dB 22 dB 1 5 dB Gain ANT RXCA 18 5 dB 1 5 dB 19 5 dB 1 5 dB Gain ripple 1 dB 1 dB MUCO characteristics Gain ANT RX 2 dB 1 dB 3 dB 1 dB Gain ANT RXCA 0 5 d...

Page 55: ... C 27 F to 149 F Passband ripple max 0 5 dB Insertion loss bypass mode max 5 dB max 3 4 dB Noise figure max 3 6 dB 2 8 dB Max input power CW 8 x 15 Watt input TMA 1 dB compression point CP1 16 5 dBm output 3rd order Intercept Point IP3 on input 1 dBm 6 dBm Current consumption 500 mA 400 mA Downlink RF band 935 960 MHz Insertion loss 0 8 dB 0 4 dB Downlink Return Loss ANT BTS port 18 dB 18 5 dBm Re...

Page 56: ... to 149 F Passband ripple max 0 5 dB Insertion loss bypass mode max 5 2 dB max 3 8 dB Noise figure max 3 6 dB 2 5 dB Max input power CW 8 x 15 Watt input TMA 1 dB compression point CP1 16 5 dBm output 3rd order Intercept Point IP3 on input 1 dBm 4 dBm Current consumption 500 mA 400 mA Downlink RF band 1805 1880 MHz Insertion loss 0 8 dB 0 6 dB Downlink Return Loss ANT BTS port 18 dB 18 5 dBm Retur...

Page 57: ...configurations 3 3 2 with duplex combining 8 0 0 with filter and duplex combining 2 2 2 with duplex combining only duplex or only filter combining is exclusively used within a cell Fig 4 9 Multi cell 3 3 2 with 3 DUAMCO 4 2 Mechanical Size W x H x D 172x280x191 mm 8 x11 x7 5 Weight 4 25 kg 9 Lbs Antenna connector 7 16 BTS connector 7 16 General Supply Voltage Range 12V 8 Alarm functions alarming v...

Page 58: ...MCO 4 2 and 1 DUAMCO 2 2 Fig 4 11 Single cell 8 0 0 with FICOM and DIAMCO RX TX RX DUAMCO 4 2 TX CU2 CU0 CU1 CELL 0 RX TX RX DUAMCO 2 2 TX CU6 CU7 CELL 2 RX TX RX DUAMCO 4 2 TX CU5 CU3 CU4 CELL 1 CU4 CU5 CU6 CU7 CU2 CU3 FICOM Base Module FICOM Expansion Module TX FICOM Expansion Module FICOM Expansion Module CU0 CU1 RX RX DIAMCO DIAMCO ...

Page 59: ...40 241 Fig 4 12 Single cell 8 0 0 with 2 DUAMCO 4 2 Fig 4 13 Multi cell 2 2 2 with 3 DUAMCO 2 2 RX TX RX DUAMCO 4 2 TX RX TX RX DUAMCO 4 2 TX CU4 CU5 CU6 CU7 CU2 CU3 CU0 CU1 CELL 0 RX TX RX DUAMCO 2 2 TX CU0 CU1 CELL 0 RX TX RX DUAMCO 2 2 TX CU2 CU3 CELL 1 RX TX RX DUAMCO 2 2 TX CU4 CU5 CELL 2 ...

Page 60: ... 2 Racks CU4 CU5 CU6 CU7 CU2 CU3 FICOM Base Module FICOM Expansion Module TX FICOM Expansion Module FICOM Expansion Module CU0 CU1 RX RX HPDU DIAMCO CU12CU13CU14 CU15 CU10CU11 FICOM Base Module FICOM Expansion Module TX FICOM Expansion Module FICOM Expansion Module CU8 CU9 RX RX DIAMCO DIAMCO RACK 0 RACK 1 TX Filter RX Filter TX Filter RX Filter HPDU DIAMCO ...

Page 61: ...exing both Antenna Combining and Multicoupling methods are used in order to connect the TX and the RX path to one antenna The technology of the new BTSEs knows TX Combiner FICOM TX and RX Combiner DUAMCO High Power Duplexer HPDU and RX Multicoupler DIAMCO DUAMCO and DIAMCO use a Low Noise Amplifier LNA in the RX path which can be set to different gain to establish the various configurations of the...

Page 62: ...enna connector including the antenna feeder cable attenuation In the configuration without antenna pre amplifier the sensitivity is guaranteed only at the rack entry 4 3 Transmission Diversity Time Delay General Up to BR6 0 each BTSplus CU works on its own frequency with RF output power limited by the maximum nominal output power of the module To achieve higher output power a separated high power ...

Page 63: ... purposes and the GSM timer processes an offset control input The GSM timer oper ates at a stable 52MHz clock signal and the generated GSM burst signal can be delayed by an appointed amount of 52MHz clocks The operator is able to adjust the delay value which is proportionate to a step size of 0 25 symbols between minus 5 and plus 5 symbols The CUs transmit the two signals and the mobile station re...

Page 64: ...he antenna 0 and the odd CUs 1 and 3 are connected to the antenna 1 Then there are the CU pairs with one even and one odd number CU 0 and CU 1 compose one CU pair and the CU 2 and the CU 3 compose a next CU pair respectively Each CU pair is suitable for transmission diversity time delay operation Both CUs of such a pair use the same carrier frequency and both CUs of the same pair transmit simultan...

Page 65: ... RF power output values for GMSK and 8PSK modula tion Revised FCC Certification for ECU 1900 For ECUs with 1930 2 and 1989 8 MHz frequencies in order to fulfil the FCC require ments in the USA the maximum transmitting power of the corner frequencies of the GSM 1900 band channel numbers 512 and 810 i e 1930 2 MHz and 1989 8 MHz respectively is decreased for all carrier units available for the U S m...

Page 66: ...aximum RF Power Output 8PSK ECUPHPV3 1930 2 512 39 6 dBm 9 1 W 42 7 dBm 18 6 W ECUPHPV3 1989 8 810 41 8 dBm 15 1 W 44 9 dBm 30 9 W ECUPHPV2 1930 2 512 39 3 dBm 8 5 W 42 2 dBm 16 6 W ECUPHPV2 1989 8 810 41 6 dBm 14 5 W 44 3 dBm 26 9 W ECUPV2 1930 2 512 42 1 dBm 16 2 W 44 7 dBm 29 5 W ECUPV2 1989 8 810 44 4 dBm 27 5 W 47 1 dBm 51 3 W Tab 4 7 Maximum RF Power Output Values ...

Page 67: ...C system consists of Frame with AC distribution DC Distribution EMI filter signal distribution between rectifiers and controller board via backplane controller board with battery supervision rectifier supervision alarm interface EEPROM to store PID up to 6 rectifier modules per Frame each 720W 48VDC N 1 redundancy to achieve 3600W 720W two LVD Relays per AC DC Frame The Backup Battery guarantees c...

Page 68: ... source AC DC CAN node or site input the trigger for the emergency configuration is expected In case the string pattern is set to ACDC_FAULT the trigger is expected from the site input of the corresponding ENVABTSE object In all other cases the normal behavior is maintained For simplicity there is no check if the string ACDC_FAULT is used for more than one ENVABTSE object If the operator has set t...

Page 69: ...Core Controller BISON Bit Switch for Optimized Network Architec ture BTSE Base Transceiver Station Equipment CC Link Core Carrier Unit Link COBA Core Basis COSA Core Satellite CU Carrier Unit DC Direct Current DIAMCO Diversity Amplifier Multi Coupler DL Downlink DUAMCO Duplex Amplifier Multi Coupler ECU Edge Carrier Unit EDGE Enhanced Data Rates for GSM Evolution EFR Enhanced Full Rate FICOM Filte...

Page 70: ...Printed Circuit Board PCM Pulse Code Modulation PDU Power Distribution Unit PID Product Identification Data PSU Power Supply Unit PWRDET Power Detector PWRSTG Power Stage RF Radio Frequency RXA Analogue receiver board RXFED Receiver Front End Diversity RXFEM Receiver Front End Main RXLO Receiver Local Oscillator SELIC Serial Link Interface Controller ASIC SIPRO Signal Processing Unit TMA Tower Mou...

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