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Chapter 5 - Networking Modes and System Configurations

Confidential and Proprietary Information of ZTE CORPORATION

Here is configuration of S1/1/1-type sites, usually configuration of 6 CDUs

and 6 directional antennas. Configuration of S1/1/1-type sites is shown in
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Power and monitoring

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RTU fan frame

Air duct

ABM fan frame

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Power and monitoring

Transmission frame

RTU fan frame

Air duct

ABM fan frame

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 ...

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Page 3: ...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...

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Page 5: ...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 7: ...tecture 1 System Introduction 1 System Background 1 Applicable Standards 3 Major Functions 3 System Working Principle 5 Hardware Structure 6 Software Architecture 8 CMM 9 FUC 12 CHP 13 CIP 14 System Features 14 Chapter 2 17 Technical Indexes 17 Physical Performance 17 Dimensions Color and Structure 17 Weight of Integrated Equipment and Weight Bearing Requirements of Equipment Room Ground 17 Power ...

Page 8: ...rfaces and Communications 25 Overview 25 Interfaces 26 Abis Interface 26 Um Interface 28 Inter Cabinet Cascaded Interface of Same Site 30 Interfaces of the Tower Amplifier System 31 Man Machine Interface MMI 31 Protocol Introduction 32 LapD Protocol 32 LapDm Protocol 34 RR MM CM Protocol 37 Chapter 4 39 System Functions 39 Overview 39 Major RF Functions 39 High Receiving Sensitivity 40 Flexible Co...

Page 9: ...ading 70 Ultra Distance Coverage 71 Chapter 5 75 Networking Modes and System Configurations 75 Networking Modes 75 System Configuration 77 Number and Types of Sites 77 BS Configuration Principles 79 Expansion Configuration 82 Configuration Examples 82 Appendix A 91 Pertinent Standards 91 Appendix B 93 FCC STATEMENT 93 Appendix C 95 CE STATEMENT 95 Abbreviations 97 Figures 101 Tables 103 ...

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Page 11: ...o complete functions and powerful capability of service supporting Purpose of this Technical Manual The ZXG10 OB06 V1 0 Compact Outdoor BTS for GSM Technical Manual introduces the working principle functions and technical features of the ZXG10 OB06 V1 0 compact outdoor BTS for GSM enabling the user to have an all around understanding of the technical features of the ZXG10 OB06 V1 0 The whole set o...

Page 12: ...tworking modes connection and configuration of the ZXG10 OB06 V1 0 Appendix A introduces the specifications cited in the manual Appendix B FCC STATEMENT Appendix C CE STATEMENT Abbreviations list all the abbreviations used in the manual Typographical Conventions ZTE documents employ with the following typographical conventions TAB L E 1 TY P O G R AP H I C AL CO N V E N T I O N S Typeface Meaning ...

Page 13: ... 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 G N S Safety Signs Meaning Danger Indicates an imminently hazardous situation which if not avoided will result in death or serious injury This signal word should be limited to only extreme situations Warning Indicates a...

Page 14: ...r 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 this document For further questions comments or suggestions on the documentation you ...

Page 15: ...ers at the maximum It is to be installed outdoors integrating functions of transmission power supply environment monitoring and temperature control in one system It is applicable to the following cases The cost of a standard equipment room would be too high in the site selected for it for example in the center of a city there is no equipment room in the site selected for it for example in the coun...

Page 16: ...ition of ZXG10 OB06 V1 0 in a GSM GPRS network FI G U R E 2 PO S I T I O N O F ZXG10 OB06 I N GSM GPRS NE T W O R K SGSN GGSN PLMN GGSN SGSN MSC Internet HLR AUC MSC VLR Gb OMC A A OB06 Gb Um BSC ZTE Abis BTS MS BSC OB06 ZTE Abis Um MS PDN PSTN ISDN PSPDN PLMN In the GSM GPRS system the ZXG10 OB06 is located between the BSC and MS connected to the BSC through an Abis interface and connected to the...

Page 17: ...PRS 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 Net Work Layer 1 General requirements GSM04 06 Mobile Station Base Station System MS BSS interface Data Link DL layer specification GSM04 08 Mobile radio interface layer 3 specification GSM04 60 General Packet Radio Service ...

Page 18: ...us transmission DTX mode only transmitting comfort noise in the voice non activated period and reducing the transmitter power and general interference level in the air signaling 8 It can calculate the time advance 9 For GSM 900 and EGSM 900 systems it supports configurations with power consumption of 40 W or 80 W For GSM1800 GSM1900 and GSM850 systems it supports 40 W configuration 10 One OB06 40 ...

Page 19: ...It supports GPRS and CS1 CS2 channel encoding modes It supports CS3 and CS4 through software upgrading and it can adjust the channel encoding mode dynamically according to the monitoring and measurement results 23 The Um interface supports A51 A52 encryption algorithm 24 It supports ultra distance coverage with a radius of 35 km 120 km System Working Principle The working principle of ZXG10 OB06 V...

Page 20: ...igh frequency signals and then finally transmitted through the antenna feeder processor In the uplink direction the antenna feeder processor receives the RF signals from the MS and sends them to the RF unit to convert them into digital signals Then the signals are sent to the baseband processor for rate conversion decryption and de interleaving Finally after being converted to the code pattern sui...

Page 21: ...ion internal external alarm collection and processing and other functions 2 Transceiver Module TRM TRM controls and processes the radio channels transmits and receives the radio channel data modulates and demodulates the base band signals on the radio carrier and transmits and receives radio carriers in the GSM system The TRM is divided into three units by function i Transceiver Process Unit TPU T...

Page 22: ...6 V1 0 with different configurations through combinations 4 Backplane Transmission Module BTM The BTM is responsible for transmitting messages between the CMM TRM and AEM and at the same time provides interfaces for inputting and outputting external signals 5 Transmission Management Module TMM The TMM can be a product manufactured by a third party In ZXG10 OB06 there is a standard 19 inch 3U high ...

Page 23: ...an be performed The internal software of ZXG10 OB06 V1 0 is composed of four parts Controller Maintenance Module CMM Frame Unit Controller FUC Channel Codec Module CHP and Carrier Interface Processor CIP Different software platforms are adopted for the software according to their functions as shown in Figure 6 FI G U R E 6 SO F T W AR E MO D U L E S O F T H E ZXG10 OB06 V1 0 System software CMM so...

Page 24: ...nd provides drivers for the relevant parts of the equipment It provides consistent operation interfaces for the specific details of the upper level encapsulated hardware equipment and simplifies the OSS design 3 pSOS operating system It is a real time multi task operating system for commercial purposes and with superior performance The operating system has been successfully applied to the next gen...

Page 25: ...ce HDLC communication link control module HDLC is the communication link control module inside the cabinet They all communicate in a point to point way Currently there are three types of communication links CCComm It is the auxiliary communication link between the master CMM of the base cabinet and that of the extension cabinet Physically it is a 2 M PCM line which facilitates the centralized data...

Page 26: ...ting interface of equipment test to implement test functions of the local BTS The system tool part is a series of developer oriented tools for system diagnosis and test to rapidly locate faults FUC The FUC software module is located in the TPU of the TRM module It processes the radio signaling over every radio carrier and signaling on the BSC interface and manages all channels Its major functions ...

Page 27: ... system It collects and redirects the output messages The drivers are also designed with a hierarchical structure including equipment dependent and equipment independent drivers All communications within the current equipment adopt the address transfer mode to reduce the overhead of the memory block copies The application layer contains the operation and maintenance module OAMM radio signaling pro...

Page 28: ...and the standards of GSM Phase II are adopted It can be upgraded to GSM Phase II smoothly 2 Advanced functions covering all frequency bands and supporting flexible configurations The ZXG10 OB06 V1 0 supports functions defined in GSM specifications and flexible configurations according to the customer s requirements It also supports mixed insertion of modules of different frequency bands such as GS...

Page 29: ...ridging protection 8 Secure and reliable power supply system The power supply module of the ZXG10 OB06 V1 0 provides such functions as lightning protection and electromagnetic filtration The PSM provides AC input protection overvoltage undervoltage protection and DC output protection overvoltage undervoltage protection lightening surge prevention burst interference resistance cycle drop prevention...

Page 30: ...abinet surface is covered with painting resisting infrared radiation 11 Convenient local operation and maintenance Standard RS232 interface is used for connection with the local operation and maintenance terminal The local operation and maintenance terminal is easy to learn and use since it is consistent with the OMCR interface Perfect local operation and maintenance Rapid and reliable online soft...

Page 31: ...de of aluminum the enclosure frame is in light grey the 4 doors are in blue and the base is in black Overall dimensions of the equipment 1800 mm 900 mm 780 mm H W D Weight of Integrated Equipment and Weight Bearing Requirements of Equipment Room Ground Weight of the equipment 450 kg Weights of parts of the cabinet The main body of the cabinet including the heat exchange and base 230 kg AEMs 6 in f...

Page 32: ...n Indexes The maximal power consumption of each module is as follows TRM 6 200 W per TRM CMM 2 pieces 15 W per CMM AEM 6 15 W per AEM Internal mixed flow fan 3 40 W per fan Internal axial flow fan 3 20 W per fan Fan for HEX 60 W Transmission 100 W Battery charging 1500 W Heater 2500 W Maintenance socket 500 W When fully configured the power consumption of the whole system is 6511W Ambient Conditio...

Page 33: ...gnal lightning protector and the internal E1 interface boards all support a D level lightning protection function thus capable of preventing damage by lightning and surge All components inside the cabinet are well connected through metal screws good grounding terminals are available and protection ground cables are well installed Requirements for Temperature and Humidity Temperature range 40 C 50 ...

Page 34: ...s iii 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 iv Nominal pulse width 244 ns v The amplitude ratio between the positive pulse and the negative pulse The amplitude ratio of the positive pulse to the negative one at the midpoint of the pulse width is superior to 0 955 1 05 The amplitude ratio of the positive p...

Page 35: ...S Different coding modes define different sizes of data blocks and channel redundancy codes In comparison with GPRS that features a mono modulation technique EDGE is capable of adapting to a more adverse and wider wireless propagation environment 3 The performance of the transmitter i The phase error of the transmitter The phase error of the transmitter is the error between the actual phase and th...

Page 36: ...l means that when inputting a standard test signal under the static environment the FER RBER or BER performance of the data generated after modulation and channel decoding meets the specified requirements when the level is configured as the referential sensitivity level Compliant with GSM 11 21 and GSM 05 05 GMSK Static sensibility level for reference 108 dBm 8PSK Static sensibility level for refe...

Page 37: ...t with GSM 11 21 and GSM 05 05 vii AM suppression AM suppression means the transmitter s capability of receiving the expected modulation signals is not over the given degraded quantity when an unexpected modulation signal exists Compliant with GSM 11 21 and GSM 05 05 viii Spurious emission The spurious emission is the emission on the frequencies except that of the RF channel of the transmitter and...

Page 38: ...Information of ZTE CORPORATION Mean Time To Repair MTTR Availability ratio A 99 999 Average time of suspensions per year 4 2 minutes The product successfully passed the CE certification The personal safety electromagnetic security EMC and wireless frequency spectrum comply with international standards ...

Page 39: ...R N AL IN T E R F AC E S OB06 OB06 BSC LMT MS MS Um interface Abis interface MMI interface Tower amplificatio n system Tower amplification system interface B interface The ZXG10 OB06 V1 0 provides Abis interfaces and Um interfaces as well the cascade interface defined as B interface between OB06s interfaces of the tower amplification and local O M interfaces The Abis interface is a communication i...

Page 40: ...ssion SDH PDH or satellite link Physically the Abis interface is an E1 interface and uses thin coaxial cables for connection Protocols on the Abis interface are hierarchical and the protocol hierarchy of circuit service is shown in Figure 10 The Abis interface does not process the packet service protocol and it is transparent for the packet signaling FI G U R E 10 CI R C U I T SE R V I C E PR O T ...

Page 41: ...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 TCH5 TCH6 TCH7 FUL FUL FUL FUL FUL FUL FUL SYNC FUL FUL FUL FUL F...

Page 42: ...TS and EAM TS for transparent environment monitoring channel The Abis interface processing is as follows 1 Transparently transmit the TCH FUL O M and EAM between cascaded sites 2 Downlink direction inside a site The TCH and FUL signaling are transparently transmitted to each TRM The Q M will be transparently switched to the QMC interface of CMM in each cabinet The CMM will identify the O M signali...

Page 43: ...N T E R F AC E MS Um Gb BSS SGSN BSSGP LLC SNDCP Network Service L1bis relay BSSGP L1bis RLC MAC GSM RF relay RLC MAC GSM RF SNDCP IP X 25 application LLC Network Service On the Um interface the circuit service protocols fall into three layers 1 The first layer is the physical layer and also the bottom layer It consists of various channels and provides the basic wireless channels for upper level m...

Page 44: ... M signaling and FN Frame Number Service signaling and TRM signaling will be transparently transmitted while O M and FN will be transmitted through the time division HDLC link The inter cabinet data interface format is shown in Figure 14 FI G U R E 14 DAT A IN T E R F AC E S B E T W E E N IN S I T E CAB I N E T S TS0 TS1 TS2 TS3 TS4 TS5 TS6 TS7 TS15 TS16 TS17 TS18 TS31 Downlink interface between c...

Page 45: ...ion of the tower amplifier for OB06 including the power interface and the alarm interface of the tower amplifier In general they are interfaces for providing the DC feed and alarm monitoring and the alarm is detected from the DC current OB06 can provide 12 V power supply and up to 300 mA current for the tower amplifier system through the power interface The tower amplifier alarm is accessed to the...

Page 46: ...to transmit messages between Layer 3 entities LapD is a point to multipoint communication protocol that employs the frame structure In the ZXG10 OB06 V1 0 LapD implements the following functions 1 Providing one or multiple data connections in the D channel The data link connections are identified by the DLCIs in the frames DLCI consists of the Terminal Equipment Identifier TEI and Service Access P...

Page 47: ...operation 1 I frame multi frame operation The L3 message is sent in the information frame mode which requires the confirmation from the receiver This mode provides a whole set of control mechanism for error recovering and flow control the establishment mechanism and release mechanism for multi frame operations The I frame structure is shown in Figure 16 including the flag sequence address field co...

Page 48: ...rial number frame mode and the receiver is not required to send the received confirmation after receiving the UI frame This operation mode does not provide flow control or error recovering mechanism The UI frame structure is shown in Figure 17 It consists of the address field control field and information field FI G U R E 17 UI FR AM E ST R U C T U R E O F LAP D 000 P 0011 TEI SAPI Address Control...

Page 49: ...pDm module communicates with the physical layer and L3 The L3 protocol is processed in FURRM OAMM configures the value of the timer necessary for LapDm module to run The LapDm module provides two types of message transmission modes for FURRM I frame multi frame operation and UI frame operation In terms of frame structure LapDm cancels the frame delimiter flag FLAG and the FCS In LapDm the synchron...

Page 50: ... radio interface is of 21 or 23 bytes which cannot meet the need of most pieces of signaling segmentation and regrouping are required to be defined in LapDm Thus an additional bit is used to distinguish the last packet frame from other frames Thanks to this mechanism there will be no restriction to fix the packet length on the radio path with the only exception when these messages must be transmit...

Page 51: ...tions between subscribers and holds and releases calls This layer provides call control CC supplementary service management SSM and short message service SMS 2 MM layer It is responsible for mobility and security management namely the necessary processing when the MS initiates location updating 3 RR layer It is responsible for radio resource management It establishes and releases connections betwe...

Page 52: ...uipment of ZXG10 OB06 V1 0 including equipment start release parameter control and performance monitoring thus ensuring normal communication services It divides the managed objects into four types radio link layer dedicated channel control channel and transceiver The message structure of L3 on the Abis interface is shown in Figure 22 The message discriminator indicates the message type management ...

Page 53: ... of the BSS OB06 has the following four major functions to implement the above service functions 1 RF function Implementing the radio connections between the MS and BTS 2 Baseband processing function Providing voice coding transcoding and rate adaptation functions including the processing of the GPRS part 3 Based on the BSC instructions controlling the establishment connection and disconnection of...

Page 54: ... implemented by two sets of independent receiving equipment at the same time including antenna tower top amplifier optional feeder divider and receiver The application of the diversity receiving function enhances the anti fading capability of the BTS receiver enabling excellent receiving performance of the BTS even in complex radio transmission environment Frequency Hopping Frequency hopping is an...

Page 55: ...mmon channel management function and TRX management function Wireless Link Management Function This function supports the following procedures 1 Link establishment indication procedure This procedure allows the OB06 to give the BSC an indication that an MS originated link in multi frame mode has been established successfully Through this indication the BSC establishes an SCCP link to the MSC 2 Lin...

Page 56: ...ablishment originated by MS is shown in Figure 23 FI G U R E 23 MS OR I G I N AT E D LI N K ES T AB L I S H M E N T MS LAPDm FURRM HPIMan LAPD BSC OAMM D m_DL_EST_IND DL_DATA_REQ EST IND DL_DATA_IND EST IND SABM SetTimer MPH_CHPIndToRR CHP SYNCHRONIZED DL_DATA_REQ CONN FAIL IND CONN FAIL IND kill Timer The OB06 gives the BSC an indication that one multi frame mode L2 link has been established on t...

Page 57: ...smission SAPI 3 on the wireless path A link establishment failure is shown in Figure 25 FI G U R E 25 FAI L U R E O F LI N K ES T AB L I S H M E N T MS LAPDm FURRM HPIMan LAPD BSC OAMM Dm_DL_EST_ REQ DL_DATA_ IND ESTREQ ESTREQ SABM Dm_DL_REL_IND DL_DATA_ REQ REL IND REL IND Dm_MDL_ERR_ IND ERR IND DL_DATA_ REQ ERR IND When the link connection fails the FURRM receives the Dm_DL_REL_IND and Dm_MDL_E...

Page 58: ...m_DL_REL_IND DL_DATA_REQ REL IND REL IND DISC UA The OB06 gives the BSC an indication that the link layer connection has been released on the wireless path If the link layer is in idle mode the OB06 returns DM frame to MS but not notifies the BSC The procedure of the link release required by a BSC is shown in Figure 27 FI G U R E 27 BSC RE Q U E S T E D LI N K RE L E AS E MS LAPDm FURRM HPIMan LAP...

Page 59: ...is not received until T200 expires the DISC will be resent and the resend times will increase by one If the failure continues the Dm_DL_RELEASE_INDICATION and MDL_ERROR_INDICATION primitives from the data link layer will be received in L3 The latter primitive records the failure cause Timer T200 expires for N200 1 times Execution is released abnormally Sending and Receiving of Transparent L3 Messa...

Page 60: ...C OAMM D m_DL_DATA_I ND DL_DATA_REQ DATA IND DATA IND I frames RR frames The BSC transfers to the BSC the acknowledgment mode L3 transparent message that is received from MS The DATA IND message contains the complete transparent message Transmission and Receiving of Transparent L3 Message in Non Acknowledgment Mode The procedure of transmitting a L3 transparent message from the BSC is shown in Fig...

Page 61: ...handover command 2 Channel mode change procedure This procedure allows the BSC to request the OB06 to change the mode of an activated channel 3 Handover detection procedure This procedure is used to check the access of a handed over MS between the target OB06 and target BSC 4 Encryption start procedure This procedure is used to start the encryption procedure specified in TS GSM 04 08 5 Measurement...

Page 62: ...SC to obtain physical parameters of a specific channel which generally happens before a change to the channel This procedure is optional 12 SACCH fill in information change procedure This procedure allows the BSC to instruct the OB06 to change the fill in information system message on a specific SACCH Channel Establishment 1 Channel activation The procedure of activating a channel successfully is ...

Page 63: ...l half rate voice data code rate adaptation frequency hopping sequence key and so on If there is encrypted information it uses the encryption activation mode When the FURRM module receives the CHAN ACTIV message it sends related information unit activation reason and so on contents to the CHP for processing through the HPIMan module and reports the results to the BSC when the response arrives When...

Page 64: ...sage from the MSC the BSC enables the new channel activation procedure The CHAN ACTIV message sent to the TRX contains Handover Reference which will be used to detect the Handover Access message from MS When the channel for handover is activated the FURRM uses the CHP RET NORM ACTIV message to notify the CHP to resume the normal mode The FURRM should save the Handover Reference in the CHAN ACTIV m...

Page 65: ...n acknowledgement mode on the active signaling channel and starts T3105 at the same time If T3105 expires before a correct decoding frame is received the message will be resent If no correct decoding frame is received when the message has been resent for Ny1 times the OB06 will send to the BSC a CONNECTION FAILURE message with the cause Handover access failed When the message is received the netwo...

Page 66: ...L_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 DL_DATA_REQ CONN FAIL IND kill Timer CONN FAIL IND The mode change failure is shown in Figure 37 FI G U R E 3...

Page 67: ...ation of the MS When it is implemented the MS responds with the RR CHANNEL MODE MODIFY ACKNOWLEDGE message to the BSC through the OB06 If the MS does not support the channel to be modified it will keep its original mode and place related information in the CHANNEL MODE MODIFY ACKNOWLEDGE message These two are transparent messages 2 Connection allocation The procedure of connection allocation is sh...

Page 68: ...on needs to be encrypted and which algorithm should be used This procedure is initiated after the BSC receives the CIPHER MODE COMMAND message from the MSC The ENCR CMD message that is sent by the BSC to the TRX and related channel contains all information to be selected loading user data encryption equipment and the complete RR CIPH MODE CMD message that is sent to the MS When the ENCR CMD is rec...

Page 69: ...CH deactivation The procedure of SACCH deactivation is shown in Figure 40 FI G U R E 40 SACCH DE AC T I V AT I O N MS LAPDm FURRM HPIMan LAPD BSC OAMM D m_DL_DATA_ REQ CHAN REL DL_DATA_IND DATA REQ CHAN REL DATA REQ CHAN REL CHAN REL DEACT SACCH DL_DATA_IND DEACT SACCH MPH_RRCmdTo CHP CHP DEACT SACCH The BSC releases the SACCH in the OB06 according to the RR CHANNEL RELEASE procedure When the BSC ...

Page 70: ...d OB06 measurement results are processed by the BSC and will be used for the transmission power control and handover preparation The MS measurement result is in the RR MEASurement REPort message and will be reported once every SACCH block 480 ms or if the SACCH is being used by other signaling reported once every two SACCH blocks 960 ms The TRX measures the level and quality of the received signal...

Page 71: ...esults in the MEAS RES message and reports to the BSC The sending of this message is synchronous with the receiving of the SACCH block from the MS If this uplink SACCH block does not contain the measurement report that is from the MS in case of short messages for example the MEAS RES that is sent by the OB06 will indicate this The procedure of measurement report preprocessing is shown in Figure 43...

Page 72: ... L1 that is sent to the MS the TRX tries to control the power control parameter within certain range according to the message requirement the CHP module implements this operation When the OB06 executes the MS power control the BSC can change the MS power parameter during the connection change by levels for example The MS POWER CONTROL and CHAN ACTIV messages must contain an MS allowed maximum powe...

Page 73: ...an LAPD BSC OAMM DL_ DATA _IND PHYS CONTEXT REQ PHYS CON TEXT REQ DL_DATA _REQ PHYS CONTEXTCONF PHYS CON TEXT CONF This optional procedure enables the BSC to obtain the physical environment information before the channel change The physical environment information can be sent to a new TRX which may be in another cell The PHY CONTEXT CONF message to be returned by the OB06 to the BSC contains the M...

Page 74: ...obile called and is started by the MSC through the BSC The BSC determines the paging team according to the IMSI of the called MS The value of the paging team and the MS IMSI are sent to the OB06 3 Immediate assignment procedure This procedure allows the BSC to immediately assign a dedicated channel to the MS that accesses the OB06 4 Indication deletion procedure This procedure allows the OB06 to g...

Page 75: ...TE ASSIGNMENT RR IMMEDIATE ASSIGNMENT EXTENDED or RR IMMEDIATE ASSIGNMENT REJECT On the Abis interface it is contained in the IMM ASS CMD message which contains complete the immediate assignment message and where the paging mode unit is set as unchanged When this message is received the FURRM sends it to the PAGCHMan sub module of the PAGCHM module That sub module places the message in the buffer ...

Page 76: ...aging sub channel The PAG CMD message contains the MS ID TMSI or IMSI and paging sub channel number or additional call related channel combination that is indicated to the MS and will be used for follow up processing The RR PAGing REQuest type 1 2 3 messages are buffered by the PAGCHMan sub module of the PAGCHM module The PAGCHDaemon sub module combines and sends them and calculates the correct DR...

Page 77: ...e Service Cell Broadcast messages to the OB06 These messages are sent by the BSC to the OB06 with the SMS BROADCAST REQ or SMS BROADCAST CMD message In these two messages the BSC considers the CBCH capacity and then queues repeats and transmits the messages The BSC also splits the SMS Cell Broadcast message on the air interface The difference between the two messages is that the SMS BROADCAST CMD ...

Page 78: ...CHP STOP BCCH INFORMATION message to the CHP indicating to stop sending these system messages to the MS For easy observation of the system message sending the TRU panel of the OB06 has a signal indicator marked as MOD 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 cel...

Page 79: ...em Information Type 5 contains the adjacent cell BCCH frequency 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 will send a SACCH INFO MODIFY message to the OB06 T...

Page 80: ...ATION message just like the measurement report This message is reported once every 102 frames 51 multiframes or 104 frames 26 multiframes Load Management 1 Load indication The procedure of load indication on the common channel is shown in Figure 57 FI G U R E 57 PU B L I C CH AN N E L LO AD IN D I C AT I O N MS PAGCHM FURRM HPIMan LAPD BSC OAMM DL_ DATA_REQ CCCH LOAD IND MPH_CHPIndTo RR CHPRA CH L...

Page 81: ...D is only used to report the RACH load that is provided by the CHP Error Indication The procedure of error indication is shown in Figure 58 FI G U R E 58 ER R O R IN D 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 is sent from the OB06 to the BSC indicates to the BSC that the following abnormities happen in the radio ...

Page 82: ...L test 2 Hardware error decoder fault for example 3 Others The CHP module will report the error to the FURRM module In addition in case of failed handover or mis synchronization between CHP and TC the FURRM also sends this message to the BSC Error Report The OB06 sends the ERROR REPORT message to the BSC notifying the following errors that cannot be reported with other procedures When the OB06 rec...

Page 83: ...the message distribution process of the Abis interface of the CMM software The CMM configuration process processes the configuration messages and implements the OB06 static data configuration by the BSC The CMM software distributes the BSC parameters and through the HDLC configures the data to the TRM board FUC software that is managed by the CMM software After receiving the configuration message ...

Page 84: ... software while the CHP software collects the alarms of itself and reports them to the FUC software The FUC software reports the collected alarms and its own alarms to the CMM software The alarms of the backbone nodes are collected by the CMM software which reports all alarms of this site to BSC through LapD and implements some relevant alarm processing such as power amplification shut down Online...

Page 85: ...ge segments and sends to FUC segment by segment 4 When all software data are sent the CMM sends to the FUC the software loading finished message 5 The FUC returns the CMM the software loading finished acknowledgement message Ultra Distance Coverage Ultra distance coverage refers to coverage by a BTS with a cell radius greater than 35 km which is stipulated by the GSM standard According to the GSM ...

Page 86: ...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 the BTS uses two timeslots to process the data of one subscriber the second timeslot is called the exte...

Page 87: ...arrier frequency capacity is reduced by half FI G U R E 65 AC T U AL NU M B E R O F PH Y S I C AL CH AN N E L S I N A CAR R I E 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 the OB06 is theoretically up to a radius of 120 km and the maximum time advance is 219 Since the actual propagation loss of GSM900 is high and due to the balance betwe...

Page 88: ...74 Confidential and Proprietary Information of ZTE CORPORATION ...

Page 89: ...ver the actual related ID DIP switches at the BS side should be designed according to the relative configurations For detailed principles refer to ZXG10 OB06 V1 0 Compact Outdoor BTS for GSM Hardware Manual FI G U R E 66 SC H E M AT I C DI AG R AM O F ST AR NE T W O R K I N G B S C SITE0 SITE1 SITEn In star networking n E1 PCM links are led into each SITE directly from BSC The OB06 device on each ...

Page 90: ...cascaded in the chain networking mode 3 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 actual related ID DIP switches at the BS side should be designed according to the relative configurations FI G U R E 68 SC H E M AT I C DI AG R AM O F TR E E NE T W O R K I N G BSC SITE0 SITE1 SITE2 SITEn The...

Page 91: ...her as shown in Figure 69 FI G U R E 69 SC H E M AT I C DI AG R AM O F CE L L S Cell1 Cell3 Cell4 Cell2 Cell5 Cell6 Cell7 Cell9 Cell8 A B In the system each cellular cell is covered by multiple radio channels If an omni antenna is employed a base station will be set at the center of each cell as A in the diagram And if a directional sectorized antenna is used the base station will be established a...

Page 92: ...l Manual 78 Confidential and Proprietary Information of ZTE CORPORATION An S type site refers to a sectorized cell Typically a three sector site is preferred that is each site has three sectors FI G U R E 70 TW O TY P E S O F SI T E S O type sites S type sites ...

Page 93: ... R E 71 BO AR D LAY O U T O F 40 W ST AN D AR D FU L L Y C O N F I G U R E D ZXG10 OB06 V1 0 CAR R I E R FR AM E P D M Battery frame Power and monitoring Transmission frame RTU fan frame C M M C M M T R M T R M T R M T R M T R M T R M ABM fan frame Air duct A E M A E M A E M A E M A E M A E M For 40 W configuration a single cabinet of OB06 can be configured with a maximum of 6 TRMs For 80 W config...

Page 94: ... frame RTU fan frame ABM fan frame Air duct Configuration of Carrier Frames and Antenna Interface Frames Configuration of the carrier frame is listed in Table 5 TAB L E 5 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 into these types...

Page 95: ...00 cells GSM1800 units are configured and so on and so forth for other GSM systems Each site may be configured as either an omni directional cell or a multiple directional cell Based on different field strength coverage modes there are two types of base station antenna omni antenna and directional antenna An omni antenna can provide omni directional coverage thus saving site construction costs How...

Page 96: ...site types the combinations listed above can be used Expansion Configuration In general 1 to 3 cabinets may be configured in a site to enlarge subscriber quantity and it is recommended to configure cabinets as few as possible In case of 40 W configuration the ZXG10 OB06 V1 0 can be configured as S2 S S at most In case of 80 W configuration the ZXG10 OB06 V1 0 can be configured as S1 3 3 at most Co...

Page 97: ... O N O F 40 W AN D 80 W O1 TY P E SI T E S 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 Air duct Air duct ABM fan frame ABM fan frame RTU fan frame RTU fan frame Battery frame Power and monitoring Transmission frame Battery frame Power and monitoring Transmission frame FI G U R E 74 LO G I C AL CO N N E C T I O N RE L AT I O N S H I P BE T W E E N T H E CO M B I ...

Page 98: ... O F 40 W AN D 80 W O2 TY P E SI T E S S P A S T R U T R M 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 Air duct Air duct ABM fan frame ABM fan frame RTU fan frame RTU fan frame Battery frame Power and monitoring Transmission frame Battery frame Power and monitoring Transmission frame FI G U R E 76 LO G I C AL CO N N E C T I O N RE L AT I O N S H I P BE T W E E N...

Page 99: ...G U R AT I O N O F 40 W AN D 80 W O3 TY P E SI T E S S P A S T R U T R M C D U Air duct S T R U S P A C M M C M M RTU fan frame Transmission frame Power and monitoring Battery frame P D M C D U C D U P D M Battery frame Power and monitoring Transmission frame RTU fan frame C M M C M M T R M Air duct C D U T R M S T R U S P A ABM fan frame ABM fan frame FI G U R E 78 LO G I C AL CO N N E C T I O N ...

Page 100: ...ion relationship FI G U R E 79 CO N F I G U R AT I O N O F 40 W AN D 8W O4 TY P E SI T E S T R M T R M C D U T R M C M M C M M P D M C D U T R M Battery frame Power and monitoring Transmission frame RTU fan frame Air duct ABM fan frame FI G U R E 80 LO G I C AL CO N N E C T I O N RE L AT I O N S H I P B E T W E E N T H E CO M B I N E R UN I T S AN D DI S T R I B U T I O N UN I T S O F O4 TY P E SI...

Page 101: ... 2 omni directional receiving antennas Figure 81 shows the configuration of O6 type sites and Figure 82 shows the logical connection relationship FI G U R E 81 CO N F I G U R AT I O N O F 40 W O6 TY P E SI T E S T R M T R M C E U C E U T R M C D U P D M C M M C M M T R M C D U T R M T R M Battery frame Power and monitoring Transmission frame RTU fan frame Air duct ABM fan frame ...

Page 102: ... TX RX TRM2 TRM1 TRM3 TRM4 TX RX TRM5 TRM6 CEU TX1 TX2 RX1 RX2 RX3 RX4 TX3 TX4 OTX 1 OTX 2 EX1 EX2 CDU TX1 TX2 RX1 RX2 RX3 RX4 EX1 EX2 CDU TX1 TX2 RX1 RX2 RX3 RX4 EX1 EX2 CEU TX1 TX2 RX1 RX2 RX3 RX4 TX3 TX4 OTX 1 OTX 2 EX1 EX2 TX RX RXD TX RX RXD TX RX RXD TX RX RXD TX RXRXD TX RX RXD Configuration Examples of the S type Site The S type site may serve either two sector cells or three sector cells ...

Page 103: ... logical connection relationship is similar to that of 02 type sites FI G U R E 83 CO N F I G U R AT I O N O F S1 1 1 TY P E SI T E S C D U C D U C D U C D U T R M C D U C D U C D U C D U S P A S T R U 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 Battery frame Power and monitoring Transmission frame RTU fan frame Air duct ABM fan frame Battery...

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Page 105: ...1544 6312 2048 8448 and 44736 kbit s 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 r...

Page 106: ...ZXG10 OB06 ZTE Integrated Outdoor GSM Base Station Technical Manual 92 Confidential and Proprietary Information of ZTE CORPORATION This page is intentionally blank ...

Page 107: ...rates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation For OUTDOOR use a Directional Antenna with a maximum gain of 17dBi is authorized for use with this unit Outside antennas must be position...

Page 108: ...94 Confidential and Proprietary Information of ZTE CORPORATION This page is intentionally blank ...

Page 109: ...may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation For OUTDOOR use a Directional Antenna with a maximum gain of 11dBi is authorized for use with this unit Outside antennas must be positioned to observe minimum separation of 4 2M 13 78 feet for 900MHz unit and 3M 9 84 feet for 1800MHz unit from all users...

Page 110: ...ZXG10 OB06 ZTE Integrated Outdoor GSM Base Station Technical Manual 96 Confidential and Proprietary Information of ZTE CORPORATION This page is intentionally blank ...

Page 111: ...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 BSS Base Station Subsystem BTM Backboard Transmission Module BTS Base Transceiver Station C CCCH Calling Control Channel CCH Common Channel CDU Combiner Distribution Unit CELL Cellular CELP Code Excited Linear Prediction Coding C...

Page 112: ...arm Module ECDU E Combiner Distribution Unit EDGE Enhanced Data rates for GSM Evolution EIR Equipment Identity Register EPLD Erasable Programmable Logic Device ETP Extend Test Port F FACCH Fast Associated Control Channel FB Frequency correction Burst FCCH Frequency Correction Channel FCLK Frame Clock FCS Frame Check Sequence FDMA Frequency Division Multiplex Access FN Frame Number FU Frame Unit FU...

Page 113: ... Channel M MMI Man Machine Interface MS Mobile Station MSC Mobile Switch Center MSS Mobile Switch System O OMC Operation and Maintenance Center P PAU Power Amplifier Unit PCM Pulse Code Modulation PLMN Public Land Mobile Network PSTN Public Switched Telephone Network PWM PoWer Module R RCU Radio Carrier Unit S SACCH Slow Associated Control Channel SMC Short Message Center SPA Super Power Amplifier...

Page 114: ...Technical Manual 100 Confidential and Proprietary Information of ZTE CORPORATION Abbreviation Full Name TPU Transceiver Process Unit TRM Transceiver Module TRX Transceivers TX Transmitter U Um Um V VLR Visitor Location Register 8PSK 8 Phase Shift Keying ...

Page 115: ...igure 21 Message Structure on the Um Interface 38 Figure 22 Message Structure of L3 on the Abis Interface 38 Figure 23 MS Originated Link Establishment 42 Figure 24 BSC Originated Link Establishment 43 Figure 25 Failure of Link Establishment 43 Figure 26 MS Originated Link Release 44 Figure 27 BSC Requested Link Release 44 Figure 28 Failure of Link Release 45 Figure 29 Sending a Transparent L3 Mes...

Page 116: ... Networking 76 Figure 68 Schematic Diagram of Tree Networking 76 Figure 69 Schematic Diagram of Cells 77 Figure 70 Two Types of Sites 78 Figure 71 Board Layout of 40 W Standard Fully configured ZXG10 OB06 V1 0 Carrier Frame 79 Figure 72 Board Position of 80 W Standard Fully configured ZXG10 OB06 V1 0 Carrier Frame 80 Figure 73 Configuration of 40 W and 80 W O1 Type Sites 83 Figure 74 Logical Conne...

Page 117: ...on of Detrimental Gases 19 Table 5 Configuration of Carrier Frames 80 Table 6 Configuration of Antenna Feeder Interface Frame 81 Table 7 Number of Configured Carriers for All 40 W TRXs and the Correspondence between CDUs CEUs and Antennas Configured in One Cell 81 Table 8 Number of Configured Carriers for All 80 W TRXs and the Correspondence between CDUs CEUs and Antennas Configured in One Cell 82...

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