Page 1 ZXG10-BTS Base Transceiver Station Technical Manual Version 2.9 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 The contents of this document are protected by copyright laws and international treaties. Any reproduction or distribution of this document or any portion of this document, in any form by any means, without the prior written consent of ZTE CORPORATION is prohibited. Additionally, the contents of this document are protected by contractual confidentiality obligations.
Page 3 Please fax to: (86) 755-26772236; or mail to Publications R&D Department, ZTE CORPORATION, ZTE Plaza, A Wing, Keji Road South, Hi-Tech Industrial Park, Shenzhen, P. R. China 518057.
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Page 5: Table Of Contents
Contents About this Technical Manual..............xi Purpose of this Technical Manual................xi Typographical Conventions..................xii Mouse Operation Conventions................xiii Safety Signs......................xiv How to Get in Touch ..................... xv Customer Support......................... xv Documentation Support......................xv Chapter ..................1 System Architecture...................1 System Description....................1 System Background ........................1 Standards Followed .........................2 Main Functions ........................3 Working Principles of System...................5...
Page 6 Voltage ..........................20 Power Consumption ......................20 Environmental Conditions..................21 Temperature and Humidity Requirements ................21 Grounding Requirements .......................21 Atmospheric Pressure Requirements ..................21 Lighting ..........................21 Air Pollution...........................21 Interface Indices....................21 Abis Interface Indices ......................21 Um Interface Indices ......................22 Capacity Indices ....................24 Clock Indices......................25 Reliability Indices....................
Page 7 Power Control ........................57 Baseband Processing .................... 57 Signaling Processing ..................... 57 Wireless Link Management Function..................57 Dedicated Channel Management Function ................64 Public Channel Management Function..................78 TRX Management Function ....................83 O&M........................86 Parameter Configuration......................87 Alarm and Status Reporting ....................87 Online Software Loading......................88 Ultra Distance Coverage..................
Page 8 Figures..................121 Tables ..................123...
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Page 11: About This Technical Manual
ZXG10-BSC Base Station Controller and the ZXG10- BTS Base Transceiver Station. The ZXG10-BTS (V2.9) is ZTE’s second generation product upgraded from the ZXG10-BTS (V2.3). As an indoor BTS, it features large capacity, compactness, high reliability, high cost performance ratio, comprehensive functions, and powerful service support capability.
Page 12: Typographical Conventions
Chapter 1, System Architecture, describes the background, the standards followed, major functions and the general structure of both the software and hardware of the ZXG10-BTS (V2.9). Thus users may have a general idea about the system. Chapter 2, Technical Indices, describes the performance indices of the ZXG10-BTS (V2.9).
Page 13: Mouse Operation Conventions
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. Confidential and Proprietary Information of ZTE CORPORATION xiii...
Page 14: Safety Signs
Electrostatic: The device may be sensitive to static electricity. Microwave: Beware of strong electromagnetic field. Laser: Beware of strong laser beam. No flammables: No flammables can be stored. No touching: Do not touch. No smoking: Smoking is forbidden. Confidential and Proprietary Information of ZTE CORPORATION...
Page 15: How To Get In Touch
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.
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Page 17: System Architecture
ZXG10-BTS (V2.9). System Description System Background The ZXG10-BTS (V2.9), an indoor type macro cell BTS, is ZTE’s second generation BTS product. Apart from the advantages from the ZXG10-BTS (V1A), the ZXG10-BTS (V2.9) features large capability (single cabinet holding twelve 40WTRXs),...
Page 18: Standards Followed
O the r PLMNs GGSN In a GSM network, the ZXG10-BTS (V2.9) is the radio transceiver for the GSM BSS. It is controlled by BSC and serves in a certain cell. BTS is connected to BSC through the Abis interface. It helps BSC implement radio resources management, radio transmission with MS and relevant control functions through the Um interface.
Page 19: Main Functions
The EMC complies with the ETSI 301489-8 and the R&TTE Directive 1999/5/EC. Main Functions The ZXG10-BTS (V2.9) has the following functions: It supports GSM Phase I/ GSM Phase II/GSM Phase II + standards. It supports multiple service functions: FS: Full rate voice service...
Page 20 It supports preprocessing of the measurement reports of the BTS. It supports base station power control: static, level-6; dynamical, level-15. It supports all paging modes specified in GSM. It supports synchronous handover, asynchronous handover, pseudo- synchronous handover, and pre-synchronous handover. Confidential and Proprietary Information of ZTE CORPORATION...
Page 21: Working Principles Of System
BCCH and are responsible for different services. Working Principles of System The working principle diagram of ZXG10-BTS (V2.9) is shown in Figure 2. Z X G 1 0 - B T S ( V 2 . 9 )
Page 22: Hardware Architecture
(CMM), transceiver module (TRM), antenna feeder equipment module (AEM), fan control modules (FCM)and power distribution module (PDM). The hardware architecture of the ZXG10-BTS (V2.9) is shown in Figure 3. Z X G 1 0 - B T S ( V 2 . 9 )
Page 23 ZXG10-BTS (V2.9). 4. FCM In the thermal design of the ZXG10-BTS (V2.9), one fan layer with two fans is installed on each carrier shelf to ensure the system to work normally since the carrier shelf is the major heat source.
Page 24 O N F I G U R A T I O N C M M P D M C M M Figure 5 shows a fully configured 80 W single cabinet with TRM modules consisting of two types of modules: STRU and SPA. Confidential and Proprietary Information of ZTE CORPORATION...
Page 25: Software Architecture
BTS information can be collected, and BTS local tests can be performed. The internal software of ZXG10-BTS (V2.9) is divided into four parts: CMM (Controller & Maintenance Module), FUC (Frame Unit Controller), CHP (Channel Codec Module) and CIP (Carrier Interface Processor).
Page 26: Controller & Maintenance Module (Cmm)
O D U L E I V I S I O N O F Controller & Maintenance Module (CMM) CMM is the control & maintenance module of the ZXG10-BTS (V2.9). Its main functions are as follows: BTS status management. BTS configuration management...
Page 27 It is a dispatch system of the state machine, providing process dispatch, process communication, memory management, timer management, process monitoring and exceptional capture. ii. RUNCTRL It is the operation control layer of the system. Confidential and Proprietary Information of ZTE CORPORATION...
Page 28 As the core of the application layer, it receives the O&M messages of the Abis interface and implements parameter configuration, status and alarm management, software version management, equipment test and external alarm collection. Confidential and Proprietary Information of ZTE CORPORATION...
Page 29: Fuc
3. It also manages BTS and loads the FUC software and DCP program. It supports global packet switching services (GPRS or PS for short). The whole FUC software can be divided into two layers: system software and application, as shown in Figure 8. Confidential and Proprietary Information of ZTE CORPORATION...
Page 30: Chp
GSM protocol, and they support frequency hopping. LMA is used in system debugging. CHP (Channel Codec Module) The CHP software module is located in the TPU of the TRM in the system. Confidential and Proprietary Information of ZTE CORPORATION...
Page 31: Cip
(EDGE modulation mode), software modulation, power control and the collection and handling of AEM, amplifier, RCU and fan alarm information. System Features The ZXG10-BTS (V2.9) has the following features: 1. High jumping-off point in technology The ZXG10 BTS (V2.9) starts from the new generation of GSM technology, and the standards of GSM Phase II are adopted.
Page 32 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 software upgrade. Confidential and Proprietary Information of ZTE CORPORATION...
Page 33: Technical Indices
This chapter describes the system indices and external interfaces of the ZXG10-BTS (V2.9). Working Band 1. Working frequency band The ZXG10-BTS (V2.9) can support 900 MHz, extended 900 MHz, 850 MHz, 1800 MHz and 1900 MHz by being configured with different functional modules. 900 MHz band...
Page 34 The channel number is in the range of 512 ~ 885. There are 374 frequency bands in all. The relationship between the channel numbers and frequency band nominal central frequency is illustrated as follows: Fu (n) = 1710.2 + 0.2 × (n - 512) (MHz) Confidential and Proprietary Information of ZTE CORPORATION...
Page 35: Physical Indices
It is a welded-style rack with doors that can be opened to both sides. Weight of Integrated Equipment and Weight Bearing Requirements of Equipment Room Ground The maximal static weight of a single rack is 270 kg. Confidential and Proprietary Information of ZTE CORPORATION...
Page 36: Power Supply Of Equipment
Without ETRM, the heat consumption of each carrier shelf, 600 W; integrated equipment, less than 2,200 W With ETRM, the heat consumption of each carrier shelf (fan included), 600 W; integrated equipment, less than 2,350 W Confidential and Proprietary Information of ZTE CORPORATION...
Page 37: Environmental Conditions
Bit rate tolerance: ± 50 × 10 iii. Signal code pattern: HDB3 2. Electrical features Pulse shape: rectangular ii. Nominal peak voltage of pulse (mark): 2.37 V (75 ohm, a pair of coaxial cables). Confidential and Proprietary Information of ZTE CORPORATION...
Page 38: Um Interface Indices
BT = 0.3 and the modulation coefficient is 1.35. 3. Performance of the transmitter Phase error of the transmitter The phase error of the transmitter is the error between the actual phase and the theoretical one. Confidential and Proprietary Information of ZTE CORPORATION...
Page 39 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. iii. Multi-path referential sensitivity Confidential and Proprietary Information of ZTE CORPORATION...
Page 40: Capacity Indices
A single rack holds twelve 40 W carriers or six 80 W carriers when configured to the full capacity. A site supports three racks, thirty-six 40 W carriers or eighteen 80 W carriers at most. Confidential and Proprietary Information of ZTE CORPORATION...
Page 41: Clock Indices
Annual average interruption time of the system (hour): 0.080 hours The product successfully passed the CE certification. The personal safety, electromagnetic security, EMC and guarantee of the wireless frequency spectrum comply with international standards. Confidential and Proprietary Information of ZTE CORPORATION...
Page 42 ZXG10-BTS (V2.9) Technical Manual This page is intentionally blank. Confidential and Proprietary Information of ZTE CORPORATION...
Page 43: Interfaces And Communications
Um Interface Abis Interface B Interface Tower Amplifier System Interface MMI Interface Apart from the Abis and Um interfaces, the ZXG10-BTS (V2.9) has the cascaded interface (B interface) between BTSs, interface (M interface) with Confidential and Proprietary Information of ZTE CORPORATION...
Page 44: Interfaces
Abis interface. The M interface between BTS and the monitoring system of the external environment provides a transparent path for the O&M of the ZXG10-BTS (V2.9).The tower amplifier system provides the power supply and the alarm interfaces. The man-machine interface (MMI) is an interface between the local O&M...
Page 45 GSM 08.56 specifies the data link layer protocol for the Abis interface. GSM08.58 stipulates the layer-3 protocols of the Abis interface. GSM 12.21 specifies the O&M message transmission mechanism on the Abis interface. Confidential and Proprietary Information of ZTE CORPORATION...
Page 46 At initialization, the OMM reads the ID signal from the rack top, and specifies the timeslot of the BS O&M information in the Abis interface according to the ID. For the ID description, refer to ZXG10-BTS (V2.9) Base Transceiver Station Hardware Manual.
Page 47: Um Interface
Figure 12, and the packet service protocol hierarchy is shown in Figure 13. The packet service protocol is implemented at the BSC side, and only physical layer is discussed here. Confidential and Proprietary Information of ZTE CORPORATION...
Page 48 The third layer (L3) is the highest layer. It comprises various messages and programs and provides service control.L3 consists of three sub-layers: radio resource management (RR), mobility management (MM) and connection management (CM). The relevant protocols of the Um interface are as follows: Confidential and Proprietary Information of ZTE CORPORATION...
Page 49: Inter-Rack Cascaded Interface Of Same Site
The same as Abis interface TS17 The same as Abis interface TS17 The same as Abis interface TS18 The same as Abis interface TS18 The same as Abis interface TS31 O&M timeslot TS31 O&M timeslot Confidential and Proprietary Information of ZTE CORPORATION...
Page 50: Interface With External Environment Monitoring System
The DB25 pin socket is adopted at the rack top of the ZXG10-BTS (V2.9) to access the backbone node alarm status signal. The CMM can collect 10 pairs of backbone nodes for input and provide two pairs of backbone nodes for output in the ZXG10-BTS (V2.9).
Page 51: Man-Machine Interface (Mmi)
ETP interface of the CMM panel. Protocol Overview For the ZXG10-BTS (V2.9), there are two important external interfaces: Abis interface and Um interface. The LapD, LapDm and RR/MM/CM protocols are processed on the two interfaces.
Page 52 26-frame multi-frame: It contains 26 TDMA frames, with a period 120 ms, used for traffic channel and associated control channel. 51-frame multi-frame: It contains 51 TDMA frames, with a period 3,060/13 ms (about 235ms), used for control channel. Confidential and Proprietary Information of ZTE CORPORATION...
Page 53 1. Traffic channel (TCH) TCHs, which carry encoded voice signals or subscriber data, include TCH/FS (TCH/Full Speed) and TCH/HS (TCH/Half Speed). Voice TCH Confidential and Proprietary Information of ZTE CORPORATION...
Page 54 BTS and MS. SDCCH: Stand-alone DCCH, used to transmit channel allocation information and other relevant information; It consists of: SDCCH/8: Stand-alone dedicated control channel SDCCH/4: The stand-alone dedicated control channel combined with BCCH /CCCH Confidential and Proprietary Information of ZTE CORPORATION...
Page 55 Each cell broadcasts an FCCH and an SCH. The basic combination in the downlink direction includes an FCCH, an SCH, a BCCH and a CCCH (PCH + AGCH), allocated strictly to TN0 of BCCH carrier configured for a cell, as shown in Figure 18. Confidential and Proprietary Information of ZTE CORPORATION...
Page 56 One TN0 group: FCCH + SCH + BCCH + CCCH Two SDCCH/8 (0, …, 7) + SACCH/C8 (0, …, 7) 29 TCH/F + FACCH/F + SACCH/TF iii. Channel combination in a large-capacity cell with 12 TRXs Confidential and Proprietary Information of ZTE CORPORATION...
Page 57 BSS paging. PPCH is used for both CS paging and PS paging, but CS paging is only applicable to MS level-A and level-B.PPCH also uses paging group and can support DRX. Confidential and Proprietary Information of ZTE CORPORATION...
Page 58 PTCCH/D is used to correct the time lead of several MSs. One PTCCH/D corresponds to several PTCCH/U. PTCCH/D is interleaved on four bursts. Figure 20 shows the mapping of PTCCH/D on the physical channel. Confidential and Proprietary Information of ZTE CORPORATION...
Page 59 B0~B11=Radio blocks Idle frames are numbered from 1 to 31 [odd numbers] PTCCH frames are numbered from 0 to 30 [even numbers] All packet logical channels are mapped on a certain physical channel (PDCH). Confidential and Proprietary Information of ZTE CORPORATION...
Page 60 Figure 21 shows the time-amplitude of the burst pulse sequence. It indicates the acceptable restriction range. The constant amplitude lasts 147 bits, that is, 142 information bits plus two 2.5bits on both sides. Confidential and Proprietary Information of ZTE CORPORATION...
Page 61 R A I N I N G E Q U E N C E I N Binary Hexadecimal BN61 BN86 970897 00100101110000100010010111 B778B7 00101101110111100010110111 10EE90E 01000011101110100100001110 11ED11E 01000111101101000100011110 6B906B 00011010111001000001101011 13AC13A 01001110101100000100111010 29F629F 10100111101100010100111111 3BC4BBC 11101111000100101110111100 Confidential and Proprietary Information of ZTE CORPORATION...
Page 62 (0, 0, 1, 1, 1, 0, 1, 0).The three bits at the end are all “0”. Synchronization sequence can be used for modulate bits. Generally, the bit states of the synchronization sequence are: (BN8,BN9,…,BN48)=(0,1,0,0,1,0,1,1,0,1,1,1,1,1,1,1,1,0,0,1,1,0,0,1,1 ,0,1,0,1,0,1,0,0,0,1,1,1,1,0,0,0). Confidential and Proprietary Information of ZTE CORPORATION...
Page 63 NBs is used on all the other packet logical channels. In some special cases, some information on the PACCH/U is composed of four continuous ABs. The radio block structure is shown in Figure 23. Confidential and Proprietary Information of ZTE CORPORATION...
Page 64: Lapd Protocol
LapD is a point-to-multipoint communication protocol that employs the frame structure. In ZXG10-BTS(V2.9), 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 respective frames.
Page 65 Functions 1, 2 and 4 hereof are completed automatically by the hardware, while functions 3, 5, 6 and 7 are implemented via the software. In ZXG10-BTS(V2.9), LapD is mainly realized in the LapD module of RSL. The position of the LapD module in RSL is shown in Figure 24.
Page 66: Lapdm Protocol
MS and BTS (V2.9), with the purpose of using the Dm channel to transmit messages for respective entities of Layer 3 via the radio interface. LapDm is based on LapD, with some simplification and modification. In the ZXG10-BTS(V2.9), LapDm implements the following functions: Confidential and Proprietary Information of ZTE CORPORATION...
Page 67 8. Supporting access of the burst solution mode after the RACH channel access is instantly assigned. In the ZXG10-BTS(V2.9), LapDm is implemented in the LapDm module of RSL. The position of LapDm module in RSL is shown in Figure 27.
Page 68 UI frame. This operation mode does not provide a flow control or error recovering mechanism. The UI frame structure of is shown in Figure 29: Confidential and Proprietary Information of ZTE CORPORATION...
Page 69: Rr/Mm/Cm Protocol
3. RR layer: Radio resource management, including establishing and releasing connection between the MS and MSC during the call process In the ZXG10-BTS (V2.9), the radio resource management module and paging module of RSL are used to implement the RR/MM/CM protocol, and...
Page 70 T indicates whether it is a transparent message. The message type indicates the function of the L3 message. The channel number indicates the channel combination type as well as marks the timeslot number. The link flag contains the contents like SAPI and so on. Confidential and Proprietary Information of ZTE CORPORATION...
Page 71: System Functions
C h a p t e r System Functions This chapter discusses the functions of the ZXG10-BTS (V2.9), including FR, baseband processing, signaling processing and O&M. Overview The BTS receives the management and controls from BSC, and works with the BSC to manage radio resources and radio network, control the...
Page 72: High Receiving Sensitivity
The BTS supports two working modes: Hopping or no hopping. With hopping on, the transceiver changes working frequencies according to a certain hopping sequence, while with hopping off, the transceiver locks a specified working frequency. Confidential and Proprietary Information of ZTE CORPORATION...
Page 73: Power Control
Specifically, the BTS signaling processing functions are wireless link layer management function, dedicated channel management function, common channel management function and TRX management function. Wireless Link Management Function This function supports the following procedures: Confidential and Proprietary Information of ZTE CORPORATION...
Page 74 9. Link error indication procedure: With this procedure, the BTS gives the BSC an indication that the radio link layer gets abnormal. Link Establishment The link establishing flow originated by MS is shown in Figure 32. Confidential and Proprietary Information of ZTE CORPORATION...
Page 75 CONN FAIL IND message to the BSC, to wait for the BSC to release the channel where the conversation cannot be established normally. The link establishing flow originated by the BSC is shown in Figure 33. Confidential and Proprietary Information of ZTE CORPORATION...
Page 76 N200 + 1 times: Execution released abnormally”. The FURRM places this cause in the ERROR REPORT message and reports it to the BSC. Link Release The link releasing procedure originated by an MS is shown in Figure 35. Confidential and Proprietary Information of ZTE CORPORATION...
Page 77 E Q U I R E D B Y A LAPDm FURRM HPIMan LAPD (REL REQ) Dm_DL_REL_REQ DL_DATA_IND (REL REQ) (DISC) (UA or DM) Dm_DL_REL_CO DL_DATA_REQ (REL CONF) (REL CONF) A failure of link release is shown in Figure 37. Confidential and Proprietary Information of ZTE CORPORATION...
Page 78 C K N O W L E D G M E N T O D E HPIMan OAMM LAPDm FURRM LAPD (DATA REQ) DL_DATA_IND (DATA REQ) Dm_DL_DATA_REQ (I frames) (RR frames) The BSC requests to send a acknowledgment mode L3 transparent message to the MS. Confidential and Proprietary Information of ZTE CORPORATION...
Page 79 DATA _REQ (UI frames) The BSC requests to send a transparent L3 message in the non- acknowledgment mode to the MS. UNIT DATA REQ message contains the complete non-acknowledgment mode L3 transparent message. Confidential and Proprietary Information of ZTE CORPORATION...
Page 80: Dedicated Channel Management Function
BTS to release a radio link that is not used any longer. 8. MS power control procedure: With this procedure, the BSS controls the transmitting power of the MS related to a specific activated channel. Confidential and Proprietary Information of ZTE CORPORATION...
Page 81 DL_DATA_IND (CHAN ACTIV) MPH_RRCmdToC HP (CHP CHAN ACTIV) MPH_CHPIndToRR (CHP CHAN ACTIV RESPONSE (ACK) Dm_PH_CONN_IND (if chan activated) DL_DATA_REQ (CHAN ACTIV ACK) (CHAN ACTIV ACK) A channel activation failure is shown in Figure 43. Confidential and Proprietary Information of ZTE CORPORATION...
Page 82 NACK message that contains the failure cause. The reason may be O&M interference (channel blocked, for example), no resource (no voice encoder, for example), equipment error, channel activated, etc. 2. Handover The handover flow is shown in Figure 44. Confidential and Proprietary Information of ZTE CORPORATION...
Page 83 MS first in synchronous activation mode. About the physical channel establishment, in case of synchronous handover, when MS is to be connected on the allocated channel, it will Confidential and Proprietary Information of ZTE CORPORATION...
Page 84 Remarks: Same to the link establishment. For the service mode TCH channel, synchronous message waited after link establishment. Channel Mode Change 1. Mode modification The successful mode modification is shown in Figure 45. Confidential and Proprietary Information of ZTE CORPORATION...
Page 85 DL_DATA_REQ (CONN FAIL IND) (CONN FAIL IND) DL_ DATA_IND DATA REQ (CHAN DL_DATA_REQ (DATA REQ (CHAN MODE MODE MODIFY ACK) (CHAN MODE MODIFY ACK)) MODIFY ACK) The failed mode modification is shown in Figure 46. Confidential and Proprietary Information of ZTE CORPORATION...
Page 86 CHANNEL MODE MODIFY ACKNOWLEDGE message. These two are transparent messages. 2. Connection allocation The procedure of connection assignment is shown in Figure 47. Confidential and Proprietary Information of ZTE CORPORATION...
Page 87 (RR) ASSIGNMENT FAILURE message on the original channel. The FURRM transfers transparently the (RR) ASSIGNMENT COMMAND, (RR) ASSIGNMENT COMPLETE (RR) ASSIGNMENT FAILURE messages. Encryption The encryption is shown in Figure 48. Confidential and Proprietary Information of ZTE CORPORATION...
Page 88 If the (RR) CIPH MODE CMD message is considered wrong, the MS returns a (RR) RR STATUS message with the cause “Protocol error unspecified” and perform no operation after that. Confidential and Proprietary Information of ZTE CORPORATION...
Page 89 OAMM LAPD FURRM HPIMan LAPD (RF CHAN REL) DL_DATA_IND (RF CHAN REL) MPH_RRCmdToC HP (CHP RF CHAN REL) MPH_CHPIndToRR (CHP RF CHAN REL ACK) DL_DATA_REQ (RF CHAN (RF CHAN REL ACK) REL ACK) Confidential and Proprietary Information of ZTE CORPORATION...
Page 90 E A S U R E M E N T E P O R T HPIMa OAMM LAPD FURRM LAPD MPH_CHPIndToRR Dm_DL_UNIT (MEAS REP) (CHP MEAS IND) DATA_REQ (MEAS REP) MPH_RRCmdToCHP (CHP SET TA) DL_DATA_REQ (MEAS RES) (MEAS RES) Confidential and Proprietary Information of ZTE CORPORATION...
Page 91 The initial parameters are set in the CHAN ACTIV message by the BSC. If these parameters are to be changed, the BSC will send the MS POWER CONTROL message to the TRX. Confidential and Proprietary Information of ZTE CORPORATION...
Page 92 BSC can specify a smaller maximum power value in the BS POWER CONTROL and CHAN ACTIV messages. 3. Physical environment request/acknowledgement The procedure of physical environment request/acknowledgement is shown in Figure 55. Confidential and Proprietary Information of ZTE CORPORATION...
Page 93 (<RR> System Information Type 5/5bis/5ter/6) and sends to the CHP module to change the original system information. If there is no system message content, it indicates that such system messages will stop being sent on this channel. Confidential and Proprietary Information of ZTE CORPORATION...
Page 94: Public Channel Management Function
BSC. The CHAN RQD message contains the Request Reference parameter (MS- selected random number, low-order bit of the TDMA frame number) and access burst pulse sequence measurement delay. Confidential and Proprietary Information of ZTE CORPORATION...
Page 95 If the downlink CCCH is overloaded, the FURRM sends the DELETE IND message to the BSC, notifying that an IMM ASS CMD command is deleted. Paging The paging procedure is shown in Figure 59, and the MS paging response is shown in Figure 60. Confidential and Proprietary Information of ZTE CORPORATION...
Page 96 The main signaling link establishment is triggered by SABM, and the SABM’s information fields contain the (RR) PAGing RESponse message. Short Message Cell Broadcast The short message cell broadcast procedure is shown in Figure 61 and Figure 62. Confidential and Proprietary Information of ZTE CORPORATION...
Page 97 When there are no other messages to be broadcast in this mode, the BTS will send a default message. Broadcast Information 1 Change Procedure The procedure of broadcast information 1 change is shown in Figure 63. Confidential and Proprietary Information of ZTE CORPORATION...
Page 98 System Information Type 3 message, and sends them to the CHP and PAGCHM modules. Broadcast Information 2 (SACCH FILL) Change Procedure The broadcast information 2 (SACCH FILL) change procedure is shown in Figure 64. Confidential and Proprietary Information of ZTE CORPORATION...
Page 99: Trx Management Function
3. Error report procedure: With this procedure, the BTS reports to the BSC the detected downlink message error that cannot be reported with other procedures. Radio Resource Indication The radio resource indication is shown in Figure 65. Confidential and Proprietary Information of ZTE CORPORATION...
Page 100 RACH and PCH loads. The CHP calculates the exact load on the RACH. The PAGCHM calculates the load on the PCH. The thresholds and sending period are configured in the OAMM. 2. General overload Confidential and Proprietary Information of ZTE CORPORATION...
Page 101 3. The SABM or DISC frame is repeated for N200 times but is not acknowledged. 4. The SABM frame received in the multiframe establishment status Connection Failure The procedure of connection failure is shown in Figure 68. Confidential and Proprietary Information of ZTE CORPORATION...
Page 102: O&M
O&M The BTS provides powerful O&M functions to implement management and maintenance of the BTS equipment. Main functions are divided into three parts: Parameter configuration, alarm and status report and software online loading. Confidential and Proprietary Information of ZTE CORPORATION...
Page 103: Parameter Configuration
CMM software of the successful configuration message at the same time, and configures the CHP and CIP. Alarm and Status Reporting The ZXG10-BTS (V2.9) supports reporting the alarms and status of the BTS to the BSC. The alarm reporting flow is shown in Figure 70.
Page 104: Online Software Loading
All software versions are downloaded into the CMM’s FLASH memory through the BSC. The CMM validates the versions, and loads the software to the FUC when it finds any difference with the TRM software. Confidential and Proprietary Information of ZTE CORPORATION...
Page 105: Ultra Distance Coverage
When the air delay is greater than 63, the time when the signal arrives at the BTS will cross two timeslots, as shown in Figure 72. As a result, the dedicated control channel and service channel need two adjacent physical channels too. Confidential and Proprietary Information of ZTE CORPORATION...
Page 106 120 km, and the maximum time advance is 219.Due to the relatively large transmission loss and the problems in uplink and downlink balancing, the actual coverage radius in the GSM900 is less than 120 km. Confidential and Proprietary Information of ZTE CORPORATION...
Page 107: Networking Modes And System Configurations
Star, chain and tree networking. 1. Star networking mode The star networking mode of the ZXG10-BTS (V2.9) is shown in Figure 7 5 S Z X G 1 0 - B T S ( V 2 . 9 )
Page 108 BTSs be cascaded in the chain networking mode. 3. Tree networking mode The tree networking mode of the ZXG10-BTS (V2.9) is shown in Figure 7 7 T I G U R E...
Page 109: System Configuration
O-type cell. An S-type site refers to a sectorized cell. Typically, a three- sector site is preferred; that is, each site has three sectors. Models of the O-type site and S-type site are shown in Figure 79. Confidential and Proprietary Information of ZTE CORPORATION...
Page 110: Base Station Configuration Principles
Configuration of the Standard Rack For 40W configuration, the installation positions of respective functional modules of the ZXG10-BTS (V2.9) in the rack are shown in Figure 80. 8 0 C Z X G 1 0 - B T S ( V 2 . 9 )
Page 111 900 M, 1800 M, 1900 M and (TRM) 850 M modules. Refer Antenna configuration principle The configuration quantity depends on equipment of the antenna feeder the specific site type. module (AEM) equipment module. Confidential and Proprietary Information of ZTE CORPORATION...
Page 112 ZXG10-BTS (V2.9) Technical Manual For the carrier configuration, , TRM in one cell should in principle be configured inside one ZXG10-BTS (V2.9) rack, so as to minimize the length of the rack-crossing RF connection cable and reduce the loss over cables.
Page 113: Expansion Configuration
To increase the cell subscribers, one to three racks can be configured in one cell generally. In principle, a cell should be configured with as fewer racks as possible. For 40 W PA configuration, ZXG10-BTS (V2.9) can be configured as a S12/12/12-type site at maximum; and for 80 W PA configuration, ZXG10-BTS (V2.9) can be configured as a S6/6/6-type site...
Page 114 Figure 84 illustrates the configuration of the O2-type site. Generally, the O2-type site is configured with 2 CDUs and 2 omni-directional receiving antenna. The logical connection relationship between the combiner units and distribution units is shown in Figure 85. Confidential and Proprietary Information of ZTE CORPORATION...
Page 115 Y P E I T E TX/ RX TX/ RX TRM1 TRM2 Figure 86 illustrates the configuration of the O4-type site. Generally, the O4-type site is configured with 2 CDUs and 2 omni-directional receiving Confidential and Proprietary Information of ZTE CORPORATION...
Page 116 Y P E I T E Fan L ayer Fan L ayer Fan L ayer O 4 - type Site O 4 - type Site C onfiguratio(4 0 W) C onfiguratio(8 0 W) Confidential and Proprietary Information of ZTE CORPORATION...
Page 117 Generally, the O6-type site is configured with 2 CDUs, 2 CEUs and 2 omni- directional receiving antennas. The logical connection relationship between the combiner units and distribution units is shown in Figure 89. Confidential and Proprietary Information of ZTE CORPORATION...
Page 118 O N F I G U R A T I O N O D E Fan Layer Fan Layer Fan Layer Fan Layer Fan Layer O6-type Site O6-type Site Configuration ( 80W ) Configuration ( 40W ) Confidential and Proprietary Information of ZTE CORPORATION...
Page 119 Figure 90 illustrates the configuration of the O8-type site. The O8-type site is configured with two CDUs, two RDUs, and two omni- antennas. The logical connection relationship between the combiner units and distribution units is shown in Figure 91. Confidential and Proprietary Information of ZTE CORPORATION...
Page 120 T R M 2 T R M 5 T R M 6 RXRXD RX RXD RX RXD RXRXD T R M 3 T R M 4 T R M 7 T R M 8 Confidential and Proprietary Information of ZTE CORPORATION...
Page 121 O D E O F T H E Y P E I T E Fan Layer Fan Layer Fan Layer Fan Layer Fan Layer Fan Layer S2/2/2-type Site S2/2/2-type Site Configuration (40W) Configuration (80W) Confidential and Proprietary Information of ZTE CORPORATION...
Page 122 ZXG10-BTS (V2.9) Technical Manual This page is intentionally blank. Confidential and Proprietary Information of ZTE CORPORATION...
Page 123: Appendix
Base Station System (BSS) interface Radio Link Control/ Medium Access Control (RLC/MAC) protocol GSM05.02 Multiplexing and multiple access on the radio path GSM05.08 Radio subsystem link control GSM08.58 Base Station Controller - Base Transceiver Station (BSC - BTS) interface Layer 3 specification Confidential and Proprietary Information of ZTE CORPORATION...
Page 124 ZXG10-BTS (V2.9) Technical Manual This page is intentionally blank. Confidential and Proprietary Information of ZTE CORPORATION...
Page 125: Appendix
BSIC Base Station Identify Code Base Station Subsystem Base Transceiver Station CCCH Calling Control Channel Common Channel Combiner Distribution Unit CELL Cellular CELP Code Excited Linear Prediction Coding Combiner Extension Unit Channel Processor Confidential and Proprietary Information of ZTE CORPORATION...
Page 126 Frequency Division Multiplex Access Frame Number Frame Unit Frame Unit Controller GGSN Gateway GPRS Support Node GMSK Gaussian Minimum Shift Keying GPRS General Packet Radio Service Globe System for Mobile communication HDB3 High Degree Bipolar coding Confidential and Proprietary Information of ZTE CORPORATION...
Page 127 Operational And Maintenance Module OBCLK Octet Binary clock Operation and Maintenance Center Power Amplifier PACCH Packet Associated Control Channel PAGCH Packet Access granted Channel PAGCHM PCH&AGCH Management Power Amplifier Unit PBCCH Packet Broadcast Control Channel Confidential and Proprietary Information of ZTE CORPORATION...
Page 128 Service Access Point Indicator Synchronization Burst Synchronization CHannel SDCCH Stand Alone Dedicated Control Channel SGSN Serving GPRS Support Node System Information Silence Descriptor Short Message Center SNDCP Subnetwork Dependent Convergence protocol SPAU Super Power Amplifier Unit Confidential and Proprietary Information of ZTE CORPORATION...
Page 129 Terminal Equipment Identification Temporary Flow Identity Tracking Phase lock Frequency synthesizer Transceiver Process Unit Transceiver Module Transceivers Time Slot Transmitter Uplink State Flag Voltage Control Oscillator Visitor Location Register VSWR Voltage Standing Wave Ratio Confidential and Proprietary Information of ZTE CORPORATION...
Page 130 ZXG10-BTS (V2.9) Technical Manual This page is intentionally blank. Confidential and Proprietary Information of ZTE CORPORATION...
Page 131: Appendix
TX crossing CDU combiner. 9 3 C D U P I G U R E A N E L 1: Cable connecting combiner TX output to duplexer TX input; 2: Duplexer TX input Confidential and Proprietary Information of ZTE CORPORATION...
Page 132 Solution: As shown in Figure 93, remove the cable connecting the combiner TX output pointed by arrow 1 to the duplexer TX input; connect the TRM TX output directly to the duplexer TX input pointed by arrow 2. Confidential and Proprietary Information of ZTE CORPORATION...
Page 133: Appendix
3M (9.84 feet) for 1900MHz unit from the outside antenna. Exceeding this minimum separation will ensure that the worker or bystander does not receive RF-exposure beyond the Maximum Permissible Exposure according to section 1.1310 i.e. limits for Controlled Exposure. Confidential and Proprietary Information of ZTE CORPORATION...
Page 134 This page is intentionally blank Confidential and Proprietary Information of ZTE CORPORATION...
Page 135: Appendix
3M (9.84 feet) for 1800MHz unit from the outside antenna. Exceeding this minimum separation will ensure that the worker or bystander does not receive RF-exposure beyond the Maximum Permissible Exposure according to section EN50383:2002 limits for Controlled Exposure. Confidential and Proprietary Information of ZTE CORPORATION...
Page 136 ZXG10-BTS (V2.9) Technical Manual This page is intentionally blank. Confidential and Proprietary Information of ZTE CORPORATION...
Page 137 Figure 4 Single Cabinet (40 W) in Full Configuration ......... 8 Figure 5 Single Cabinet (80 W) in Full Configuration ......... 9 Figure 6 Software Composition and Module Division of ZXG10-BTS (V2.9) ..10 Figure 7 Module Structure of CMM Software ...........11 Figure 8 FUC Software Module Structure............14...
Page 138 Figure 78 Cells in a Cellular System ..............93 Figure 79 Two Site Types ................94 Figure 80 Card Layout of the Carrier Frame of ZXG10-BTS (V2.9) for 40 W Configuration ..................94 Figure 81 Card Layout of the Carrier Frame of ZXG10-BTS (V2.9) for 80 W Configuration ..................95...
Page 139 Relationship Between CDUs and Antennae Configured in One Cell ....96 Table 8 Number of Configured Carriers for all 80 W TRXs and the Corresponding Relationship Between CDUs and Antennae Configured in One Cell ....97 Confidential and Proprietary Information of ZTE CORPORATION...

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