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Chapter 4 - System Functions

Confidential and Proprietary Information of ZTE CORPORATION

•

Handover:
Figure 35 shows the handover procedure.

I G U R E

3 5

–

A N D O V E R

LAPDm

FURRM

HPIMan

LAPD

BSC

OAMM

(PHY INFO)

Dm_DL_DATA_I

ND (HANDO

COM)

(HANDO DET)

DL_DATA_REQ (DATA

IND (HANDO COM))

DL_DATA_IND (DATA REQ

(RR HANDO CMD))

Dm_DL_DATA_

REQ ( HANDO

CMD)

(DATA REQ (RR

HANDO CMD))

( HANDO

CMD)

Dm_DL_RANDO

M ACCESS_IND

(HANDO

ACCESS)

DL_DATA_REQ (HANDO DET)

Dm_DL_UNIT

DA TA_REQ

(PHY INFO)

T3105

(HANDO

COM)

(DATA IND

(HANDO COM))

Repeat

Ny1 times

DL_DATA_REQ (CONN FAIL IND)

(CONN FAIL IND)

T3105, Ny1

(end)

CHP RET NORM

ACTIV

Dm_DL_EST_IND

(correct L2 frame)

DL_DATA_REQ (EST

IND)

(EST IND)

remark

The handover enables MS to move in the dedicated mode into another
channel of another cell.

When BSC receives HANDO RQ message from MSC, it enables the new
channel activation procedure. The CHAN ACTIV message sent to TRX
contains Handover Reference, which it uses to detect Handover Access

message from MS.

After the activation of handover channel, FURRM uses the CHP RET

NORM ACTIV message to notify CHP to resume the normal mode.

The FURRM should save the Handover Reference in CHAN ACTIV

message. It is required to compare it with the Handover Reference in
the Handover Access message that LAPDm sent.

The (RR) HANDOVER COMMAND message is sent on the active SDCCH.
This transparent message contains the information about new channel:

•

New channel characteristics

•

Power command

Summary of Contents for ZXG10-OB06

Page 1: ...ion Technical Manual Version 1 0 ZTE CORPORATION ZTE Plaza Keji Road South Hi Tech Industrial Park Nanshan District Shenzhen P R China 518057 Tel 86 755 26771900 800 9830 9830 Fax 86 755 26772236 URL http support zte com cn E mail doc zte com cn ...

Page 2: ...aimed including without limitation any implied warranty of merchantability fitness for a particular purpose title or non infringement ZTE CORPORATION and its licensors shall not be liable for damages resulting from the use of or reliance on the information contained herein ZTE CORPORATION or its licensors may have current or pending intellectual property rights or applications covering the subject...

Page 3: ...curacy Content Good Fair Average Poor Bad N A Your suggestions for improvement of this documentation Please check the suggestions which you feel can improve this documentation Improve the overview introduction Make it more concise brief Improve the Contents Add more step by step procedures tutorials Improve the organization Add more troubleshooting information Include more figures Make it less tec...

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Page 5: ... 3 System Features 4 System Working Principle 7 Hardware Structure 9 Control Maintenance Module CMM 11 Transceiver Module TRM 11 Antenna Equipment Module AEM 12 Backplane Transmission Module BTM 15 Transmission Management Module TMM 15 Heat Exchanger HEX 16 Power Module PWM 16 Software Architecture 16 Chapter 2 23 Technical Specifications 23 Physical Characteristics 23 Voltage and Power 24 Environ...

Page 6: ...ocol 43 LAPDm Protocol 46 RR MM CM Protocol 50 Chapter 4 54 System Functions 54 Overview 54 Major RF Functions 55 High Receiving Sensitivity 55 Flexible Configuration 55 Easy O M 55 Diversity Receiving 55 Frequency Hopping 56 Power Control 56 Baseband Processing 56 Signaling Processing 57 Wireless Link Management Function 57 Dedicated Channel Management Function 64 Common Channel Management Functi...

Page 7: ...rking Mode 99 Tree Networking Mode 99 System Configuration 100 Number and Types of Sites 100 BTS Configuration Principles 102 Expansion 106 Configuration Examples 106 Appendix A 117 Pertinent Standards 117 Appendix B 119 Abbreviations 119 Appendix C 125 Figures 125 Appendix D 127 Tables 127 Appendix E 129 Index 129 ...

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Page 9: ...The whole documents set include ZXG10 OB06 V1 0 Integrated Outdoor GSM Base Station Guide to Documentation ZXG10 OB06 V1 0 Integrated Outdoor GSM Base Station Technical Manual ZXG10 OB06 V1 0 Integrated Outdoor GSM Base Station Hardware Manual ZXG10 OB06 V1 0 Integrated Outdoor GSM Base Station Installation Manual ZXG10 OB06 V1 0 Integrated Outdoor GSM Base Station Maintenance Manual Routine Maint...

Page 10: ...ng Modes and System Configuration Introduces networking modes system configurations and networking examples of ZXG10 OB06 V1 0 Appendix A Pertinent Standards Lists the standards appeared in the manual Appendix B Abbreviations Lists all the abbreviations used in the manual Appendix C Figures Lists all the figures appeared in the manual Appendix D Tables Lists all the tables appeared in the manual A...

Page 11: ...tton usually the left mouse button twice Right click Refers to clicking the secondary mouse button usually the right mouse button once Drag Refers to pressing and holding a mouse button and moving the mouse Safety Signs TAB L E 3 SAF E T Y SI GN S Safety Signs Meaning Danger Indicates an imminently hazardous situation which if not avoided will result in death or serious injury This signal word sho...

Page 12: ...information on how to obtain support for the documentation and the software Customer Support If you have problems questions comments or suggestions regarding your product contact us by e mail at support zte com cn You can also call our customer support center at 86 755 26771900 and 86 800 9830 9830 Documentation Support ZTE welcomes your comments and suggestions on the quality and usefulness of th...

Page 13: ...is one of the ZXG10 BTS series of base transceiver stations and is an integrated outdoor BTS for GSM A single cabinet supports six carriers at the maximum In one system it integrates the following Transmission functions Power supply Environment monitoring and temperature control It is useful to install in either of the following two conditions The cost of a standard equipment room is too high Ther...

Page 14: ...E AR AN C E ZXG10 OB06 is located between BSC and MS in the GSM GPRS network It connects to the BSC through Abis interface and to MS through Um interface The ZXG10 OB06 provides the following functions Serving as a radio transceiver for a cell Interaction between the BSC and a radio channel Wireless transmission with the MS and the related controlling function ...

Page 15: ...TN ISDN PSPDN PLMN Standards ZXG10 OB06 complies with the following standards Standards for RF interface ETSI TS 101 087 V5 0 0 GSM 05 05 GSM 11 21 ITUT T G 703 G 704 standard Abis interface GSM 11 21 high low temperature specifications In terms of radio services it complies with the following protocols and specifications GSM 03 60 General Packet Radio Service GPRS GSM 03 64 General Packet Radio S...

Page 16: ...0 OB06 V1 0 is a compact outdoor BTS with a high capacity A single cabinet can support up to six carriers The main features of ZXG10 OB06 are as follows Compatible with the following GSM Phases GSM Phase I GSM Phase II GSM Phase II GSM Frequencies Support GSM900 EGSM900 GSM850 GSM1800 GSM1900 systems Support different frequency band modules inserted in the same cabinet Provide the following TCH se...

Page 17: ...e transmitter power and general interference level in the air signaling Calculate time advance Support configurations with 40 W or 80 W power consumption for GSM900 and EGSM900 systems and 40 W for GSM1800 GSM1900 and GSM850 systems Support six TRXs per ZXG10 OB06 BTS for 40 W configuration for the GMSK mode and 50 W for the 8PSK mode It also supports S6 6 6 extension of 18 TRXs at the same site S...

Page 18: ...c radiation functions Power system contains external high capacity batteries It provides a function for management of secondary power down and batteries Uses standard RS232 interface for connection with the local operation and maintenance terminal It also provides rapid and reliable online software upgrade Possess prompt alarm system for the following Unattended BS Power supply Built in tower ampl...

Page 19: ... antenna feeder processor receives the RF signals from the MS It then sends these signals to the RF unit to convert into digital signals ii The signals are then transmitted to baseband processor for rate signals conversion decryption and de interleaving iii After conversion to the code pattern suitable for long distance transmission the signals are sent to the BSC through the Abis interface Figure...

Page 20: ...dware consists of the following units Control and Maintenance Module CMM Transceiver Module TRM Antenna Equipment Module AEM Backplane Transmission Module BTM Heat Exchanger HEX Power Module PWM Figure 4 shows the layout of the ZXG10 OB06 system FI G U R E 4 LAY O U T O F ZXG10 OB06 SYS T E M 1 2 3 4 5 6 7 8 9 1 AEM 2 AEM fan subrack 3 Transceiver Module 4 FDM fan subrack ...

Page 21: ...Chapter 1 System Architecture Confidential and Proprietary Information of ZTE CORPORATION 9 5 Power Module 6 Transmission subrack 7 PDM breaker 8 Emergency light 9 Battery box ...

Page 22: ...is interface processing BTS operation maintenance Clock synchronization and generation Internal external alarm collection and processing Transceiver Module TRM TRM performs the following functions Controls and processes the radio channels Transmit and receive the radio channel data Modulates and demodulates the baseband signals on the radio carrier Transmit and receives radio carriers in the GSM s...

Page 23: ...GSM specifications Power Amplifier Unit PAU PAU amplifies the power of the radio carrier to provide the BS equipment with sufficient transmission power In GSM900 or EGSM900 bands ZXG10 OB06 features a transceiver unit with an output power of 80 W This unit consists of two modules Super Transceiver Module for GSM EGSM 900 STRG It fulfills the functions of the TPU and RCU Super Power Amplifier for G...

Page 24: ...owing units One 2 in 1 combiner One 1 to 4 low noise amplifier with two extended receiving output terminals One built in duplexer The combiner combines signals from multiple transmitters to one output terminal The bidirectional coupler provides the test circuit with the SWR detection and TX power monitoring functions The control circuit implements the SWR output The TX filter provides band pass fi...

Page 25: ...gether with CDU to constitute a 4 in 1 combiner splitter Backplane Transmission Module BTM BTM is responsible for transmitting messages between CMM TRM and AEM At the same time it provides interfaces for inputting and outputting external signals Transmission Management Module TMM TMM can be a product manufactured by a third party In ZXG10 OB06 there is a standard 19 inch 3U high shelf for accommod...

Page 26: ...ance socket Power plug in box converts AC power to 48 V DC power for the CMM TRM ETRM TMM and fan of HEX Software Architecture In software design ZXG10 OB06 V1 0 adopts modular and hierarchical concepts to facilitate development and maintenance The modules are independent in function with each other and associates with each other through the internal interfaces The core software can be downloaded ...

Page 27: ... software module CIP software module Control Maintenance Module CMM The CMM of ZXG10 OB06 V1 0 provides the following functions Status management Configuration management Device management Monitoring management Test management Database management Supporting local O M functions including local parameter configuration and alarm query Figure 9 shows the layers of CMM software FI G U R E 9 CMM SO FT W...

Page 28: ...ctions Process dispatch Process communication Memory management Timer management Process monitoring and abnormality capture RUNCTRL It is the operation control layer of the system It includes the system control module and implements the power on sequence for application processes In addition the layer includes some miscellaneous functions of the operating system such as redirection of the printing...

Page 29: ...f the application layer it receives the O M messages of the Abis interface and implements the following Parameter configuration Status and alarm management Software version management Device test External alarm collections Data Base Subsystem DBS The application layer is designed with the database as a core The database coordinates assign configuration parameters It also synchronizes data between ...

Page 30: ... Frequency hopping calculation Management control over CHP Manages ZXG10 OB06 and loads DSP program Supports packet switching services GPRS or PS Channel Processing Module CHP CHP software module is located in the TPU of the TRM It implements all baseband channel processing and some corresponding control functions including channel encoding decoding and demodulation Carrier Interface Processor CIP...

Page 31: ... AC T E R I S T I C S Characteristics Parameters Values Framework Section Aluminum Material Used Doorplates Aluminum Enclosure frame Light grey Doors four Blue Color Base Black Height 1800 mm Width 900 mm Dimensions Depth 780 mm Main body including base and heat exchange 230 kg AEMs maximum six 42 kg Carrier module maximum six 36 kg CMM maximum two 3 kg Fiber slice tray 1 5 kg Transmission frame 8...

Page 32: ...VAC TRM 6 200 W per TRM CMM 2 15 W per CMM AEM 6 15 W per AEM Internal mixed flow fan 3 40 W per fan Internal axial low fan 3 20 W per fan Fan for HEX 60 W Transmission 100 W Battery charging 1500 W Heater 2500 W Power Consumption fully configured 6511 W Maintenance socket 500 W Environmental Characteristics Table 6 shows ZXG10 OB06 V1 0 environmental characteristics TAB L E 6 ZXG10 OB06 V1 0 EN V...

Page 33: ...ing ZXG10 OB06 V1 0 features a lightning protection capability of B C level Built in induction free lightning protector in the AC input part of ZXG10 OB06 is of level B C However the power system internal modules provide a lightning protection function of level D One fourth wavelength lightning protector for the antenna system is installed at outlet of the antenna feeder near the cabinet ZXG10 OB0...

Page 34: ...E S Electrical Features Values Pulse shape Rectangle Nominal pulse width 244 ns Nominal peak voltage of pulse mark 2 37V 75 ohm a pair of coaxial cables 3 V 120 ohm a pair of symmetrical cables Peak voltage when without pulse vacant number 0 0 237V 75 ohm one pair of coaxial cables 3 V 120 ohm one pair of symmetrical cables Amplitude ratio between positive and negative pulse At midpoint of pulse w...

Page 35: ...pable of adapting to a more adverse and wider wireless propagation environment Transmitter Performance The following characteristics describe the transmitter performance Transmitter phase error Phase error of the transmitter is the error between the actual phase and the theoretical one Root Mean Square of the BTS phase error less than 5 and the peak value not over 20 Transmitter frequency error Tr...

Page 36: ...path referential sensitivity A level set while inputting a standard test signal under the multi path environment The FER RBER or BER generated after modulation and channel decoding meets the specified requirements when the level is configured as the referential sensitivity level Referential interference level interference and suppression of same frequency and adjacent channels The capability to re...

Page 37: ...I O N S Characteristics Values Clock accuracy 1 0 10 9 Pull in range 1 0 10 9 Maximum frequency offset 1 10 9 day Maximum initial frequency offset 1 10 7 Reliability The product successfully passed the CE certification The personal safety electromagnetic security Electromagnetic Security EMC and wireless frequency spectrum comply with international standards Table 11 ZXG10 OB06 Reliability Specifi...

Page 38: ...26 Confidential and Proprietary Information of ZTE CORPORATION This page is intentionally blank ...

Page 39: ...OB06 V1 0 provides the following interfaces Abis and Um interfaces B interface cascaded interface between OB06 BTSs Tower amplification and local O M interfaces Figure 10 shows the ZXG10 OB06 external interfaces positions FI G U R E 10 ZXG10 OB06 EX T E R N AL IN T E R F AC E S PO S I T I O N S OB06 OB06 BSC LMT MS MS Um interface Abis interface MMI interface Tower amplification system interface B...

Page 40: ... communication services There are series of conditions provided to interconnect the MS and OB06 for signal transmission over the radio channel A set of standards is set up This set of specifications about signal transmission over radio channel is the Um interface The Um interface is designed with a hierarchical model ZXG10 OB06 implements circuit service protocol Figure 11 shows the hierarchical m...

Page 41: ...nnection Management CM Relevant protocols of Um interface are as follows GSM 04 03 describes the channel structure and access capability GSM 04 04 specifies the physical layer structure GSM 04 05 defines the data link layer protocol GSM 04 08 stipulates the layer 3 protocols Abis Interface Abis interface is the standard interface between OB06 and BSC Abis interface sends the signals from BSC to OB...

Page 42: ...Layer 1 physical layer is the PCM digital link at 2048 Kbps Layer 2 data link layer is based on LAPD Layer 3 transparently transmits layer 3 messages on A interface and manages radio resources The protocols related to Abis interface are as follows GSM 08 52 It specifies the basic principles and rules of the other specifications for the Abis interface It also specifies how the service functions are...

Page 43: ...3 EAM2 EAM1 EAM0 O M3 O M2 O M1 O M0 0 1 2 3 4 5 6 7 TCH0 TCH1 TCH2 TCH3 TCH4 TCH5 TCH6 TCH7 TCH0 TCH1 TCH2 TCH3 TCH4 TCH5 TCH6 TCH7 TCH0 TCH1 TCH2 TCH3 TCH4 TCH5 TCH6 TCH7 TCH0 TCH1 TCH2 TCH3 TCH4 TCH5 TCH6 TCH7 TCH0 TCH1 TCH2 TCH3 TCH4 TCH5 TCH6 TCH7 TCH0 TCH1 TCH2 TCH3 TCH4 TCH5 TCH6 TCH7 TCH0 TCH1 TCH2 TCH3 TCH4 TCH5 TCH6 TCH7 TCH0 TCH1 TCH2 TCH3 TCH4 TCH5 TCH6 TCH7 TCH0 TCH1 TCH2 TCH3 TCH4 TC...

Page 44: ...ansparently switches to QMC interface of CMM in each cabinet The CMM identifies the I M signaling according to TEI and master rack transparently transmits the EAM signaling Uplink The TCH signaling is transmitted transparently FUL signaling in the same cabinet is compressed and packed in the CMM O M signaling is multiplexed based on TEI and master rack transparently transmits the EAM signaling Int...

Page 45: ...e as Abis interface Same as Abis interface Same as Abis interface Same as Abis interface Same as Abis interface Same as Abis interface Same as Abis interface Same as Abis interface After CMM is powered on it reads the ID signal to locate the position of the O M TS The master rack generates FN and SYNCLK and sends to extension cabinet The cabinet category is read by the CMM from the cabinet top ID ...

Page 46: ...t indicates that there is no output for the tower amplifier and alarm is OFF Tower amplifier power interface is located on the cabinet top One ZXG10 OB06 cabinet can provide three tower amplifier power interfaces Man Machine Interface MMI The MMI is a serial communication interface between ZXG10 OB06 and local O M terminal It is carried out by the 10 BaseT network interface or RS232 interface betw...

Page 47: ...g sequential transmission of the frames Error detection and recovery Notifying the management entity of the un recoverable error Traffic control ZXG10 OB06 V1 0 implements LAPD in RSL LAPD module Figure 15 shows the position of LAPD module in RSL FI G U R E 15 LAPD MO D U L E PO S I TI O N LapD module OAMM FURRM Physical layer BSC LAPD module communicates with the physical layer and L3 L3 protocol...

Page 48: ...e address field contains the following two identifiers Terminal Equipment Identifier TEI It performs addressing for different units through TEI in the Abis interface link Service Access Point Identifier SAPI In general a unit has multiple functional entities The functional address SAPI identifies the logical physical links between different functional entities Links of the three kinds of informati...

Page 49: ...n I frame Multi frame Operation Control field In the control field P represents the query bit if this bit is set to 1 it means to require the response frame from the peer entity Information field LAPDm Protocol In GSM LAPDm is a data link protocol for signaling transmission between MS and ZXG10 OB06 V1 0 It uses the Dm channel to transmit messages for entities of Layer 3 through the radio interfac...

Page 50: ...l is processed in FURRM OAMM configures the value of the timer necessary for LAPDm module to run In terms of frame structure LAPDm not uses the frame delimiter flag FLAG and the FCS In LAPDm synchronization scheme of radio interface is used to transmit boundary message The transmission scheme provided by the physical layer of the Um interface boasts the error check function The LAPDm module provid...

Page 51: ...ed sending serial number of the next I frame It predicts the instructions from the receiving end Information field It transmits L3 data for example system information measurement report and data indication The maximum length of a LAPDm frame on the TCH is 23 bytes and on SACCH is 21 bytes The difference is because of the two special purpose bytes in each SACCH block The frame maximum length on the...

Page 52: ...al layer RR MM and CM These sub layers are responsible for control and management It arranges the information of the subscriber and system control process into the designated logical channels according to certain protocol packets RR Layer It implements radio resources management to establish and release connection between the MS and MSC during the call process MM Layer It implements mobility and s...

Page 53: ... T1 flag TI Protocol Indicator 0 Message type Information cell compulsory Information cell optional The message structure on Um interface includes the following fields Protocol indicator field It indicates the protocol type RR CM or SMS Transaction Identifier TI field It distinguishes multiple concurrent CM connections Message Type field It indicates the function of L3 message Message Transparency...

Page 54: ...ID Other information cells The message structure on Abis interface includes the following fields Message Identifier field It indicates the message type which can be from the following Radio link layer Dedicated channel Common channel TRX T field It indicates whether it is transparent message Message Type field It indicates the function of the L3 message Channel number field It indicates the channe...

Page 55: ...unction Implementing the radio connections between MS and BTS Baseband processing function Voice coding Transcoding and rate adaptation functions including processing of the GPRS part Connection control Based on the BSC instructions controlling of the following Access Connection and disconnection of radio connections between MS and BTS Handover and paging of MS including GPRS part Operation and ma...

Page 56: ...quired Through the adjustment of front end gain such as tower amplifier and low noise amplifier the loss in different length of feeder can be compensated to guarantee consistent receiving system gain Easy O M The RF part of the ZXG10 OB06 V1 0 can be controlled remotely through OMCR to change the transmitting power transmitting receiving frequency and more The alarm signals generated from the RF p...

Page 57: ...verage adjustment Dynamic power control It ranges up to 30 dB with 2 dB per step BSC can adjust OB06 transmitting power according to the distance between MS and OB06 Idle time slot transmitting shutoff functions When there is no downlink signal BSC commands OB06 to shut off the transmitting power of that time slot These power control functions increase the efficiency of transmitter and reliability...

Page 58: ... establish a link in multi frame mode on a radio channel Link release request procedure It allows BSC to request OB06 to release a radio link Link release indication procedure It allows OB06 to give BSC an indication that the MS originated radio link has been released Um L3 message transparent forwarding procedure in acknowledgment mode It allows BSC to request OB06 to transparently forward a Um i...

Page 59: ...reless path 2 During the paging GSM 04 08 message PAGING RESPONSE contained in DL_EST_IND sent to FURRM module 3 After the FURRM module sends the EST IND message there may be two situations If the current channel is the TCH activated in the service mode the synchronization timer enables to wait for the synchronization between CHP and TC If the synchronization is not implemented until the timer exp...

Page 60: ...tablish a link for point to point transmission SAPI 3 on the wireless path Figure 25 shows the link establishment failure FI G U R E 25 LI N K ES T AB L I S H M E NT FAI L U R E When the link connection fails FURRM receives Dm_DL_REL_IND and Dm_MDL_ERROR_IND primitives from the data link layer The latter primitive records the failure cause Timer T200 expires for N200 1 times Execution is released ...

Page 61: ...I G U R E 26 MS O R I G I N AT E D LI N K RE L EAS E The OB06 gives BSC an indication that the link layer connection has been released on the wireless path If the link layer is in idle mode OB06 returns Dm frame to MS but does not notify it to BSC Figure 27 shows the link release procedure requested by BSC FI G U R E 27 BSC R E Q U E ST E D LI N K RE LE AS E ...

Page 62: ...mer T200 at the same time If the UA or Dm frame is not received until T200 expires it resends DISC and the resend timer increases by one If the failure continues the L3 receives the Dm_DL_RELEASE_INDICATION and MDL_ERROR_INDICATION primitives from the data link layer The latter primitive records the failure cause timer T200 expires for N200 1 times Execution is released abnormally Transparent L3 M...

Page 63: ...ng FI G U R E 30 RE C E I V I N G TRAN S P AR E N T L3 ME S S AG E I N AC K N O W L E D G E MO D E OB06 transfers the acknowledgment mode L3 transparent message received from MS to BSC The DATA IND message contains the complete transparent message Transmission and Receiving of Transparent L3 Message in Non acknowledgment Mode Figure 31 shows the procedure of transmitting L3 transparent message fro...

Page 64: ...e change procedure It allows BSC to request OB06 to change the mode of activated channel Handover detection procedure It checks the access of handed over MS between the target OB06 and target BSC Encryption start procedure It starts the encryption procedure specified in TS GSM 04 08 Measurement report procedure It includes the mandatory basic measurement report procedure and the optional pre proce...

Page 65: ...is procedure is optional SACCH fill in information change procedure It allows BSC to instruct OB06 to change the fill in information system message on a specific SACCH Channel Establishment Channel establishment is of two kinds Channel activation Figure 33 shows the procedure of activating a channel successfully FI G U R E 33 SU C C E S S F U L CH AN N E L AC T I V AT I O N MS LAPDm FURRM HPIMan L...

Page 66: ...frequency hopping sequence key and so on If there is encrypted information it uses the encryption activation mode iii When FURRM module receives the CHAN ACTIV message it sends related information activation reason and so on to CHP using HPIMan module for processing It reports the results to BSC when the response arrives iv On activation of the channel TRX responds with the CHAN ACTIV ACK message ...

Page 67: ...L2 frame DL_DATA_REQ EST IND EST IND remark The handover enables MS to move in the dedicated mode into another channel of another cell When BSC receives HANDO RQ message from MSC it enables the new channel activation procedure The CHAN ACTIV message sent to TRX contains Handover Reference which it uses to detect Handover Access message from MS After the activation of handover channel FURRM uses th...

Page 68: ...ver when MS is connected to the allocated channel the first half procedure is the same as in synchronous handover see above After sending HANDO DET message OB06 sends the RR PHY INFO message to MS in non acknowledgment mode on the active signaling channel At the same time it starts timer T3105 If T3105 expires before receiving a correct decoding frame OB06 resends the message If no correct decodin...

Page 69: ...M MODE MODIFY DL_DATA_IND MODE MODIFY MPH_RRC mdToCHP CHP MODE MODIFY MPH_CHPIndToRR CHP MODE MODIFY RESP DL _DATA_ REQ MODE MODIFY ACK DATA REQ CHAN MODE MODIFY DL_DATA_IND DATA REQ CHAN MODE MODIFY Dm_DL_ DATA_REQ CHAN MODE MODIFY CHAN MODE MODIFY DL_DATA_REQ DATA REQ CHAN MODE MODIFY ACK DL_ DATA_IND CHAN MODE MODIFY ACK DATA REQ CHAN M ODE MODIFY ACK Set Timer MPH_CHPIndToRR CHP SYNCHRONIZED D...

Page 70: ...t changes into the new mode the OB06 returns a MODE MODIFY ACK message If the TRX cannot change the mode for some reasons it returns a MODE MODIFY NACK message If the response message indicates the successful mode change and TCH channel changes into service mode FURRM starts the timer to wait for the CHP SYNCHRONIZED message for the synchronization between CHP and TC If it cannot recognize the mes...

Page 71: ... ASSIGN COMP ASSIGN COMP The wireless link changes in the same cell BSC commands OB06 activation through a simple request acknowledgment procedure see the CHAN ACTIV and CHAN ACTIV ACK of the access procedure Once OB06 activates the BSC commands MS to perform channel change through RR ASSIGNMENT COMMAND message On changing its settings according to the new information and establishing a new signal...

Page 72: ...R CIPH MODE CMD message that is sent to MS When OB06 receives ENCR CMD TRX sends RR CIPH MODE CMD to MS in the non encryption mode At the same time it begins the decryption the CHP implements this operation The OB06 in fact here sends configurations in old mode and receives configurations in new mode Upon receiving the RR CIPH MODE CMD MS sets to the new mode and sends RR CIPH MOD COM to OB06 When...

Page 73: ... Protocol error unspecified After that it performs no operation Channel Release Channel release has two parts SACCH release Figure 40 shows the SACCH deactivation procedure FI G U R E 40 SACCH DE AC T I V AT I O N The BSC releases the SACCH in OB06 according to the RR CHANNEL RELEASE procedure It sends DEACT SACCH message to OB06 to stop transmitting downlink SACCH frame The FURRM module sends the...

Page 74: ...essage to BSC SACCH Procedure SACCH procedure comprises of the following Measurement report BSC processes MS and OB06 measurement results and use these results for power control transmission and handover preparation The MS measurement results in the RR MEAS REP message which it reports once every SACCH block 480 ms If other signaling is using the SACCH BSC reports once every two SACCH blocks 960 m...

Page 75: ...is message is synchronous with the receiving of the SACCH block from the MS If this uplink SACCH block does not contain the MS measurement report the MEAS RES that OB06 sends indicates this for example in case of short messages Figure 43 shows the measurement report pre processing procedure FI G U R E 43 ME AS U R E M E N T RE P O R T PRE P R O C E S S I NG PR O C E D U R E MS LAPDm FURRM HPIMan L...

Page 76: ...the optional OB06 power control According to the message requirement TRX tries to control the power control parameter within certain range by changing frame header of the power level L1 The CHP module implements this operation When OB06 performs MS power control BSC can change the MS power parameter during the connection for example change by levels The MS POWER CONTROL and CHAN ACTIV messages mus...

Page 77: ...RX However BSC can specify a smaller maximum power value in the BS POWER CONTROL and CHAN ACTIV messages Physical environment request acknowledgment Figure 46 shows the physical environment request acknowledgment procedure FI G U R E 46 PH Y S I C AL EN V I R O NM E N T RE Q U E S T AC K N O W L E D GM E N T MS LAPDm FURRM HPIMan LAPD BSC OAMM DL _ DATA _ IND PHYS CONTEXT REQ PHYS CON TEXT REQ DL ...

Page 78: ...tem information If there is no system message content it indicates that such system messages are no longer being sent on this channel Common Channel Management Function This function supports the following procedures MS channel request procedure It triggers when the TRX detects the random access of MS Paging procedure It is used for the called MS It pages MS on the specified paging sub channel It ...

Page 79: ...ives MS random access request it sends the channel request message to BSC The CHAN RQD message contains Request Reference parameter MS selected random number low order bit of the TDMA frame number and access burst pulse sequence measurement delay Immediate Assignment Figure 49 shows the immediate assignment procedure FI G U R E 49 IM M E DI AT E AS S I G NM E N T The immediate assignment message i...

Page 80: ...ds these messages to CHP Before sending OB06 changes the paging mode If BSC cannot assign channel it sends RR IMMEDIATE ASSIGNMENT REJECT using the same CCCH time slot of the same channel on which it received If the downlink CCCH is overloaded FURRM sends the DELETE IND message to BSC notifying that it has deleted IMM ASS CMD command Paging Figure 50 shows the paging procedure and Figure 51 shows ...

Page 81: ...T FI G U R E 53 SH O R T MES S AG E CE L L BR OAD C AS T CO M M AN D MS LAPDm FURRM HPIMan LAPD BSC OAMM DL_ DATA_IND SMS BROADCASTCMD SMS BROAD CAST CMD MPH_CBCHMsg BlkToCHP CBCHpage The BSC sends the Short Message Service Cell Broadcast messages to OB06 BSC send these messages to OB06 with the SMS BROADCAST REQ or SMS BROADCAST CMD message In these two messages BSC considers the CBCH capacity an...

Page 82: ...stop sending these system messages to MS For the easy observation system message sending TRU panel of OB06 has a signal indicator marked as MOD Following are the different types of system information and their contents System Information Type 1 contains RACH control parameters and cell configuration System Information Type 2 contains RACH control parameters and BCCH configuration of an adjacent ce...

Page 83: ...y table The System Information Type 5bis and System Information Type 5ter contain adjacent cell BCCH extended configuration information The System Information Type 6 contains the location area ID and cell ID When the fill in information uploaded in the SACCH needs to be changed the BSC sends a SACCH INFO MODIFY message to OB06 SACCH fill in information in this message transmits in the specified ch...

Page 84: ... level value of the idle channel It reports this value in the CHP MEASUREMENT INDICATION message just like the measurement report This message is reported once every 102 frames 51 multiframes or 104 frames 26 multiframes Load Management ZXG10 OB06 V1 0 manages load in the following ways Load indication Figure 57 shows the procedure of load indication on the common channel FI G U R E 57 PU B L I C ...

Page 85: ...ER LOAD is only used to report the RACH load that is provided by the CHP Error Indication Figure 58 shows the error indication procedure FI G U R E 58 ER R O R IND I C AT I O N MS LAPDm FURRM HPIMan LAPD BSC OAMM Dm_MDL_ERR OR_IND DL_DATA_REQ ERROR IND ERROR IND The ERROR IND message that OB06 send to BSC indicates that the following abnormalities happen in the radio data link layer The ERROR IND ...

Page 86: ...SM 05 08 The OB06 judges whether there is any fault according to the uplink SACCH error rate or RXLEV RXQUAL test Hardware error for example decoder fault Others The CHP module reports the error to FURRM In addition in case of failed handover or miss synchronization between CHP and TC the FURRM also sends this message to BSC Error Report The OB06 sends ERROR REPORT message to BSC notifying the err...

Page 87: ...I O N PR O C E S S CMM software FUC software CHP software CIP software CMM board receives messages from BSC through Base station Interface Equipment BIE using LAPD It forwards these messages to the application process The CMM configuration process processes the configuration messages and implements the OB06 static data configuration It distributes the BSC parameters and configures the data through...

Page 88: ...arm Backbone node alarm CMM software FUC software CHP software CIP software The CIP software collects its own alarms as well as fan AEM and PA alarms and then reports these alarms to FUC software CHP software also reports its own alarms to FUC software The FUC software reports the collected alarms and its own alarms to the CMM software CMM software collects the alarms of the backbone nodes which r...

Page 89: ... to the CHP and CIP through the HPI interface Below is the software loading procedure 1 The CMM sends the software loading initialization message to FUC 2 The FUC returns the software loading initialization finished message to CMM 3 CMM divides the software versions into message segments and sends FUC segment by segment 4 When all software data are sent the CMM send the software loading finished m...

Page 90: ...o time slots as shown in Figure 63 Thus a dedicated control channel and a service channel can be two physical channels namely two consecutive time slots FI G U R E 63 TI M E DE L AY RE L AT I O N S H I P 0 0 1 1 General air delay 63 0 6 7 1 2 2 3 4 5 6 7 3 4 5 0 7 6 5 OB06 transmitting 63 bit transmitting in advance MS transmitting When BTS uses two time slots to process the data of one subscriber...

Page 91: ...R 0 0 3 2 1 1 2 3 4 5 6 7 The original TRXs Extended channel TRXs With extended channels the coverage of OB06 is theoretically up to a radius of 120 km and the maximum time advance is 219 The actual coverage radius may be less than the theoretical value This difference is because the actual propagation loss of GSM900 is high and the balance between upper and lower links ...

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Page 93: ...V1 0 Each line denotes a bi directional E1 connection However the design of the actual related ID DIP switches at the BS side should be according to the relative configurations For detailed principles refer to ZXG10 OB06 V1 0 Integrated Outdoor GSM Base Station Hardware Manual FI G U R E 66 ST AR NE T W O R K I N G SC HEM AT I C DI AG R AM B S C SITE0 SITE1 SITEn In star networking each site conta...

Page 94: ...orking mode is applicable to stripe like areas with a small population thus saving a large number of transmission devices To prevent the clock performance drop it is recommended not to cascade more than four OB06s in the chain networking mode Tree Networking Mode The tree networking mode of the ZXG10 OB06 V1 0 is shown in Figure 68 Each line denotes a bi directional E1 connection However the desig...

Page 95: ... meet the maximum traffic requirement Number and Types of Sites A radio cellular mobile network can be divided into a certain number of cells depending on its frequency resources and cell planning The cells in a cellular system are adjacent to each other as shown in Figure 69 FI G U R E 69 CE L L SC H EM AT I C DI AG R AM Multiple radio channels cover each cellular cell in the system If an omni di...

Page 96: ... O type cell S type site It refers to a sectored cell For typical operations three sector site is preferred that is each site has three sectors Figure 70 shows the two models FI G U R E 70 TY P E S O F SI TE S O type sites S type sites BTS Configuration Principles Configuration of Standard Cabinet Figure 71 shows the installation positions of functional modules of ZXG10 OB06 V1 0 in the cabinet fo...

Page 97: ...R I E R FR AM E BO AR D LAY O U T Air Duct AEM Fan Subrack RTU Fan Subrack Power Module Transmission Subrack Battery Box A E M A E M A E M A E M A E M A E M T R M T R M T R M T R M T R M T R M C M M C M M P D M For 40 W configuration a single cabinet of OB06 can be configured with a maximum of six TRMs For 80 W configuration a single cabinet of OB06 can be configured with a maximum of three TRMs ...

Page 98: ...Module Transmission Subrack Battery Box S T R U S P A S P A S T R U Carrier Frames and Antenna Interface Frames Configuration Table 12 lists the Carrier frame configuration TAB L E 12 CO N F I G U R AT I O N O F CAR R I E R FR AM E S S N Unit Name Configurations Description 1 TRM Ntrx total number of carriers A single cabinet is configured with 6 carriers at the maximum namely Ntrx 6 TRMs fall int...

Page 99: ...e GSM1800 units and so on and so forth for other GSM systems Configuration of each site can be as either omni directional cell or a multiple directional cell Based on different field strength coverage modes there are two types of base station antennas omni directional antenna and directional antenna An Omni directional antenna can provide omni directional coverage thus saving site construction cos...

Page 100: ...0 OB06 V1 0 can be configured as S3 3 3 at most Configuration Examples The ZXG10 OB06 V1 0 has multiple configuration modes with different combinations All the configurations are based on the user requirements and network planning Therefore system configuration modes vary with different application sites A site is typically configured as an omni directional site 2 sector site or 3 sector site O ty...

Page 101: ... M C M M S P A S T R U C D U Air Duct AEM Fan Subrack RTU Fan Subrack Power Module Transmission Subrack Battery Box Air Duct RTU Fan Subrack AEM Fan Subrack Power Module Transmission Subrack Battery Box FI G U R E 74 LO G I C AL CO N N E C T I O N RE LAT I O N S H I P B E T W E E N COM B IN E R UN I T S AN D D I S T R I B U TI O N UN I T S O F O1 T Y P E SI TE CD U TX RX TRM 1 CDU RX TX 1 TX 2 RX1...

Page 102: ...D 80 W O2 T Y P E SIT E S CO N F I G UR AT I O N C D U S T R U S P A C M M C M M P D M C D U C D U P D M C M M C M M T R M C D U T R M S T R U S P A Air Duct AEM Fan Subrack RTU Fan Subrack Power Module Transmission Subrack Battery Box RTU Fan Subrack Power Module AEM Fan Subrack Air Duct Transmission Subrack Battery Box FI G U R E 76 LO G I C AL CO N N E C T I O N RE LAT I O N S H I P B E T W E E...

Page 103: ...n of 40 W and 80 W O3 type sites and Figure 78 shows the logical connection relationship FI G U R E 77 40 W AN D 80 W O3 T Y P E SIT E S CO N F I G UR AT I O N C D U T R M C M M C M M P D M C D U C D U P D M C M M C M M S P A S T R U C D U T R M S T R U S P A S P A S T R U T R M Air Duct AEM Fan Subrack RTU Fan Subrack Power Module Transmission Subrack Battery Box Air Duct AEM Fan Subrack RTU Fan ...

Page 104: ...N COM B IN E R UN I T S AN D DI S T R I B U T IO N UN I T S O F O3 T Y P E SI TE TX RX TX RX TRM 1 TX RX RXD TRM 2 TX RX RXD CDU TX1 TX2 RX1 RX2 RX3 RX4 CDU TX1 TX2 RX1 RX2 RX3 RX4 TRM 3 TX RX RXD In general the O4 type site configuration is with two CDUs and two omni directional receiving antennas Figure 79 shows the configuration of 40 W O4 type sites and Figure 80 shows the logical connection r...

Page 105: ... M T R M AEM Fan Subrack Air Duct C D U T R M T R M FI G U R E 80 LO G I C AL CO N N E C T I O N RE LAT I O N S H I P B E T W E E N COM B IN E R UN I T S AN D DI S T R I B U T IO N UN I T S O F O4 T Y P E SI TE TX RX TX RX TRM1 TX RX RXD TRM2 TX RXRXD TRM4 TX RXRXD CDU TX1 TX2 RX1 RX2 RX3 RX4 CDU TX1 TX2 RX1 RX2 RX3 RX4 TRM3 TX RXRXD In general the O6 type site configuration is with two CDUs two C...

Page 106: ...ORPORATION configuration of O6 type sites and Figure 82 shows the logical connection relationship FI G U R E 81 40 W O6 T Y PE SI T E S CO N FI G U R AT I O N Air Duct AEM Fan Subrack RTU Fan Subrack Power Module Transmission Subrack Battery Box C D U T R M C M M C M M P D M C D U T R M C E U C E U T R M T R M T R M T R M ...

Page 107: ...N S H I P B E T W E E N CDUS CEUS O F O6 T Y P E SI T E TX RX TRM2 TRM1 TRM3 TRM4 TX RX TRM5 TRM6 CEU TX 1 TX 2 RX 1 RX 2 RX 3 RX 4 TX 3 TX 4 OTX 1 OTX 2 EX 1 EX 2 CDU TX 1 TX 2 RX 1 RX 2 RX 3 RX 4 EX 1 EX 2 CDU TX 1 TX 2 RX 1 RX 2 RX 3 RX 4 EX 1 EX 2 CEU TX 1 TX 2 RX 1 RX 2 RX 3 RX 4 TX 3 TX 4 OTX 1 OTX 2 EX 1 EX 2 TX RX RXD TX RXRXD TX RXRXD TX RX RXD TX RXRXD TX RX RXD ...

Page 108: ... sites with the usual configuration of six CDUs and six directional antennas The logical connection relationship is similar to that of 02 type sites FI G U R E 83 S1 1 1 TY P E SI T E CO NF I G UR AT I O N T R M S T R U S P A Air Duct AEM Fan Subrack RTU Fan Subrack Power Module Transmission Subrack Battery Box Air Duct AEM Fan Subrack RTU Fan Subrack Power Module Transmission Subrack C D U T R M ...

Page 109: ...of 1544 6312 2048 8448 and 44736 kbps GSM03 60 General Packet Radio Service GPRS Service description GSM03 64 General Packet Radio Service GPRS Overall description of the GPRS radio interface GSM04 04 Technical Specification Group GSM EDGE Radio Access Network Layer 1 General requirements GSM04 06 Mobile Station Base Station System MS BSS interface Data Link DL layer specification GSM04 08 Mobile ...

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Page 111: ... Mode AUC Authentication Center B BBP Base Band Processor BCCH Broadcast Control Channel BER Bit Error Rate BFI Bad Frame Indication BIE Base station Interface Equipment BP Burst Period pulse BSC Base Station Controller BSIC Base Station Identify Code BSP Board level Support Package BSS Base Station Subsystem BTM Backplane Transmission Module BTS Base Transceiver Station C C I Carrier to Interfere...

Page 112: ...dule CS Circuit Switched CU Carrier Unit D DB Data Base DBS Data Base Subsystem DLCI Data Link Connection Identifier DLL Data Link Layer DRX Discontinuous Receiving DSP Digital Signal Processor DTX Discontinuous Transmission E E1 E1 EAM External Alarm Module ECDU E Combiner Distribution Unit EDGE Enhanced Data rates for GSM Evolution EIR Equipment Identity Register EMC Electromagnetic Compatibilit...

Page 113: ...for Mobile communication H HDB3 High Degree Bipolar coding HDLC High Level Data Link Controller HEX Heat Exchanger HLR Home Location Register HPI Host Processor Interface HW High Way I I Q In phase quadrature ID Identification Identity ISDN Integrated Services Digital Network L LAPD Link Access Procedure D Channel LAPDm Link Access Procedure Dm mobile D Channel LMT Local Maintenance Terminal LMU L...

Page 114: ...c Switched Telephone Network PWM Power Module R RBER Residual Bit Error Ratio RCU Radio Carrier Unit RLC Radio Link Control RR Radio Resource RSL Radio Signaling Link S SABM Successful Backward set up information Message SACCH Slow Associated Control Channel SAPI Service Access Point Identifier SMC Short Message Center SMS Short Messaging Service SPA Super Power Amplifier SPAG Super Power Amplifie...

Page 115: ...eviation Full Name TEI Terminal Equipment Identifier TI Transaction Identifier TMM Transmission Management Module TPU Transceiver Process Unit TRM Transceiver Module TRX Transceivers TS Time Slot TX Transmitter U Um Um Interface V VLR Visitor Location Register VSWR Voltage Standing Waver Ratio ...

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Page 117: ...gure 19 LAPDm I frame Structure 48 Figure 20 LAPDm UI frame Structure 50 Figure 21 L3 Message Structure on Um Interface 51 Figure 22 L3 Message Structure on Abis Interface 53 Figure 23 MS originated Link Establishment 58 Figure 24 BSC originated Link Establishment 60 Figure 25 Link Establishment Failure 60 Figure 26 MS originated Link Release 61 Figure 27 BSC requested Link Release 61 Figure 28 Li...

Page 118: ...r 96 Figure 66 Star Networking Schematic Diagram 98 Figure 67 Chain Networking Schematic Diagram 99 Figure 68 Tree Networking Schematic Diagram 99 Figure 69 Cell Schematic Diagram 100 Figure 70 Types of Sites 102 Figure 71 40 W Standard Fully Configured ZXG10 OB06 v1 0 Carrier Frame Board Layout 103 Figure 72 80 W Standard Fully Configured ZXG10 OB06 V1 0 Carrier Frame Board Layout 104 Figure 73 4...

Page 119: ...ZXG10 OB06 V1 0 Environmental Characteristics 24 Table 7 Limit to Invasion of Detrimental Gases 25 Table 8 Abis Interface Basics 26 Table 9 Abis Interface Electrical Features 27 Table 10 ZXG10 OB06 Clock Specifications 30 Table 11 ZXG10 OB06 Reliability Specifications 31 Table 12 Configuration of Carrier Frames 104 Table 13 Antenna Feeder Interface Frame Configuration 105 Table 14 Configured Carri...

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Page 121: ...ation Interface Equipment BIE 105 Baseband processing 67 BCCH INFO 99 Bearing capacity 37 B interface 46 Block and spurious response suppression 43 Board level Support Package BSP 31 BS POWER CONTROL 93 BS_AG_BLKS_RES 100 BS_PA_MFRMS 100 Burst interference 18 C I 41 Capacity Specifications 43 Carrier Interface Processor CIP 29 34 105 106 107 CBCH 98 CCCH 94 95 96 101 102 CCCH LOAD IND 102 CCCH_CON...

Page 122: ...MC 44 Electromagnetic shielding 17 ENCR CMD 87 88 Encryption algorithm 18 Envelop 42 Environment 16 38 Environment monitoring 13 Environmental Characteristics 37 Equalizer decryption 42 ERROR IND 76 103 ERROR REPORT 73 88 89 104 FLASH memory 107 Flow control 57 58 59 61 62 Frame Number FN 33 53 54 Frame Unit Controller FUC 29 33 101 Frequency hopping 17 33 68 69 Front end gain 68 FURRM 83 85 104 G...

Page 123: ... PAU 24 Power Characteristics 37 Power control 34 68 91 92 Power Distribution Module PDM 28 Power Module PWM 21 28 Prerequisites 68 Pre synchronous handover 18 Procedure 70 71 77 78 94 101 104 Error report procedure 101 Radio resource indication procedure 101 Traffic control procedure 101 Pseudo synchronous handover 18 Pseudo synchronous cell 83 pSOS 31 Pulse shape 40 Pulse width nominal 40 RACH 1...

Page 124: ...4 66 69 96 102 108 Timers T200 73 75 76 T3105 82 83 Tower amplifier 18 55 68 Transceiver TRX 65 66 69 70 78 80 81 85 87 88 89 90 92 93 94 95 101 102 109 119 131 Transceiver Module TRM 21 23 24 Transceiver Process Unit TPU 24 Transcoding 67 Transmission functions 13 Transmission Management Module TMM 27 Transmitter 17 41 42 69 Transmitter frequency error 41 Transmitter Performance 41 Transmitter ph...

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