Zte ZXC10 CBTS Technical Manual
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Zte ZXC10 CBTS Technical Manual

Zte ZXC10 CBTS Technical Manual

Cdma2000 compact base transceiver station
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See also: Installation Manual
ZXC10 CBTS
cdma2000 Compact Base Transceiver Station
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 1 ZXC10 CBTS cdma2000 Compact Base Transceiver Station 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 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.
  • Page 4 FCC & IC STATEMENT Before using this product, read this important RF energy awareness and control information and operational instructions to ensure compliance with the FCC and IC RF exposure guidelines. NOTICE: Working with the equipment while in operation, may expose the technician to RF electromagnetic fields that exceed FCC rules for human exposure.
  • Page 5 This page is intentionally blank.

  • Page 7: Table Of Contents

    Contents About this Manual ..................xi Purpose of This Manual ..................xi How to Use This Manual ..................xi Typographical Conventions..................xii How to Get in Touch ....................xii Customer Support........................xii Documentation Support......................xii Chapter ................... 13 System Overview ..................13 Position of BTS in the CDMA System ..............14 System Features ....................
  • Page 8 BDS Working Principle ......................27 Technological Advantages of BDS...................27 BDS Hardware Configuration ....................28 RFS ........................30 RFS Schematic Diagram ......................31 RFS Working Principle......................31 Technological Advantages of RFS ...................32 Hardware Configuration......................33 PWS ........................34 PWS Schematic Diagram .......................34 PWS Working Principle......................35 Hardware Configuration......................35 Chapter ...................
  • Page 9 Environment Indices ..................... 56 Performance Indices ..................... 58 Reliability ..........................58 Interface..........................58 Capacity..........................58 Frequency Band ........................58 Specs of Bands 800 MHz, 450 MHz and 850 MHz..............58 Specs of 1.9 GHz and 2.1GHz ....................61 Clock ............................62 Noise ............................63 Appendix ................65 Abbreviations ..................65 Figures..................
  • Page 10 This page is intentionally blank.

  • Page 11: About This Manual

    The all-IP base station mentioned in this manual refers to the base station of cdma2000 system. In this book, ZXC10 CBTS is briefed as BTS, ZXC10 BSCB, as BSC and ZXC10 BSSB, as BSS. How to Use This Manual...

  • Page 12: Typographical Conventions

    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.

  • Page 13: System Overview

    C h a p t e r System Overview In this chapter, you will learn about: Position of BTS in the CDMA system Architecture, functions and features of BTS Standards followed by BTS Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 14: Position Of Bts In The Cdma System

    CN: Provides authentication at the network side and interfaces with a public network. As a member of the BTSB family, ZXC10 CBTS is special for its compact structure, in addition to other advantages such as large capacity and high integration level.
  • Page 15 As seen from the diagram, BTS is located between mobile stations (MSs) and the Base Station Controller (BSC). It encodes, decodes, modulates and demodulates CDMA signals, performs up-conversion and down- conversion for subscriber data, amplifies RF power, and transmits / receives radio signals. Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 16: System Features

    The compactness advantage plus high capacity requires less space for installing the BTS and also other auxiliary equipment. Technological Advantages Support smooth evolution to 1X EV-DV and CDMA2000-3X. Employ all-IP architecture with large switching capacity, high QoS guarantee and robust reliability. Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 17: High Reliability

    The BTS can use 220V AC or –48V DC and it has the built-in primary power supply. Smooth Expansion and Upgrade All boards support hot swapping, convenient for online upgrade and maintenance. The Channel Module (CHM) can be configured easily as a subcard. Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 18: Easy Operation And Maintenance

    Support online upgrade. Support remote downloading of logic, MCU MCU program, BOOT program and FLASH file. Provide graphical user interface for easy operation and maintenance. The interface shows the topology maps, tool bars and real rack layout. Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 19: Functions

    In the reverse link, BTS first receives weak radio signals through the antenna feeder and RFE. The signals then undergo low noise amplification, down frequency conversion, decoding demodulation. Finally, BTS sends the data through the Abis interface to BSC. Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 20: International Standards Followed By Bts

    18. ITU-T Q.704 Signal link (MTP3). 19. ITU-T Q.703 Signal link (MTP2). 20. 3GPP2 C.S0024, cdma2000 High Rate Packet Data Air Interface Specification，December 2001. 21. 3GPP2 A.S0007, 1xEV-DO Inter-Operability Specification (IOS) for cdma2000 Access Network Interface, June 2001. Confidential and Proprietary Information of ZTE CORPORATION...
  • Page 21 Chapter 1 - System Overview 22. 3GPP2 C.S0029, Test Application Specification (TAS) for High Rate Packet Data Air Interface, July 2001. 23. TIA/EIA/IS-97D，Recommended Minimum Performance Standards for Base Stations Supporting Dual Mode Spread Spectrum Systems, 2001. Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 22: Bts Hardware

    C h a p t e r BTS Hardware In this chapter, you will learn about: Hardware structure Composition of subsystems Features and functions of each subsystem Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 23: Hardware Structure

    The hardware structure of BTS can be seen either from a physical or logical point of view. This chapter describes the hardware structure of BTS, however, for more information on the boards, please refer to ZXC10 CBTS (V1.0) cdma2000 Compact Base Transceiver Station Hardware Manual.

  • Page 24: Logical Structure

    RFS in this book refers to an LRFS. 3. PWS This subsystem supplies power to the whole BTS and it comprises primary power supply (converts 200 V/1110 V AC to –48 V DC, Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 25: List Of All Bts Boards

    BDS Interface Module RF Management Module Transmitter and Receiver BTS Test Module Linear Power Amplifier Power Amplifier Interface Module Radio Frequency End AC Power Distribute Power Monitor Module Power Rectifier Module RFS Power Distribute Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 26: Bds

    The CHM of each BDS is a CE resource-sharing pool. RIM: provides interface to connect BDS and RFS, and performs forward signal summation and backward signal distribution. It also distributes clocks from GCM to CHM and CCM. Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 27: Bds Working Principle

    High integration: baseband CE resource of 12 carrier sectors for EV-DO and 24 carrier sectors for 1X Channel sharing: the baseband CE resource (a shared pool) for 12/24 carrier sectors can be used by any sectors through static or dynamic CE assignment. Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 28: Bds Hardware Configuration

    BDS, there are four CHM slots to deliver pure 1X service with 24 carrier sectors, or pure EV-DO service with 12 carrier sectors. Besides, the number of CHM boards can be adjusted to adapt to the capacity requirement. Confidential and Proprietary Information of ZTE CORPORATION...
  • Page 29 O N F I G U R A T I O N SBDS The SBDS has no GCM, DSM and SNM boards (while the MBDS does). The CCM board in MBDS is changed to SCM in SBDS. Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 30: Rfs

    Further description on the antenna feeder system is omitted in this book. If not otherwise specified, the RFS in this book refers to its parts inside BTS. Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 31: Rfs Schematic Diagram

    TRX. The stream in TRX changes to intermediate frequency (IF) signals first and then goes to RFE for up- conversion. The RF signals generated are finally transmitted through RFE and antenna feeder after power amplification. Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 32: Technological Advantages Of Rfs

    RIM. One TRX may provide the capacity of 4 carriers and adopt the LPA for 4 carriers. In a single cabinet, there can be 12 carrier sectors (1~4 carriers × 1~3 sectors). Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 33: Hardware Configuration

    Hardware Configuration The RFS boards are located in both shelves of the BTS as shown below. . 8 R F E C O N F I G U R A T I O N Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 34: Pws

    48 V DC, used when the user provides the 220 V/110 V AC only. PRM (Power Rectifier Module): used for AC input and can be configured in 5+1 mode. RPD (RFS Power Distribute): converts –48 V to provide suitable power supplies for the RFS boards. Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 35: Pws Working Principle

    . 1 0 P P W S R I M A R Y O W E R U P P L Y O F Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 36: Bts Software

    C h a p t e r BTS Software In this chapter, you will learn about: BTS software subsystems and functions Software of CCM, CHM, RMM and TRX boards Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 37: Bts Software Overview

    The core of BSP&Drive is the commercial operating system kernel. Above the kernel is the encapsulation layer, which encapsulates the kernel system invoking and shields unnecessary functions from the Confidential and Proprietary Information of ZTE CORPORATION...
  • Page 38 The encapsulation layer provides the subscriber process with necessary primitive and function invoking interfaces. 5. SCS performs monitoring, startup and version downloading of the BTS software system. It runs on the operating system and database subsystem. Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 39: Ccm Software

    Monitor BDS and RFS boards and report alarms. Control power-on and configuration of other BTS boards. Support active / standby changeover of CCM. Support downloading and query of software version and logic of BTS boards. Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 40: Chm0 Software

    EACH and R-CCCH; and traffic channels such as R-DCCH, R-FCH, R- SCH and R-SCCH. Support board hot swapping. Allow online version downloading via a transmission bus. Control system’s remote soft reset and backplane interface disabling . Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 41: Chm1 Software

    Software CES-HRPD runs on CHM1 to deliver EV-DO service. It is designed on the CSM5500 chip. CHM-HRPD runs under CES-HRPD control, and processes HRPD air interface control channel signaling and service data frames. Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 42: Rmm Software

    Support power-on, address acquisition and data configuration of RFS boards. Manage RFS boards’ status. Control the switchover of RFS fiber links. Control TRX switchover. Control PA switchover. Support the diagnostic test for RFS boards. Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 43: Trx Software

    Board backup control. If BTM is configured, it provides test signals for the transceiving devices located in the BTS sectors with the help of test MS, for the purpose of online test on system performance. Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 44: Bts Networking And Configuration

    C h a p t e r BTS Networking and Configuration In this chapter, you will learn about: BTS networking modes BTS networking configuration Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 45: Networking Through Abis Interface

    Several BTS connect in serial to BSC as in a ring structure. Chain networking In a chain networking mode, several BTS are connected to form a chain with the last BTS connecting to BSC through E1/T1 or SDH. Confidential and Proprietary Information of ZTE CORPORATION...
  • Page 46 BSC connects with BTS through E1/T1, SDH or Ethernet interface. The Ethernet approach applies when BSC is near BTS and in this way, the complex Abis link compression protocol is avoided, the networking cost cut down and reliability enhanced. Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 47: Bts Networking

    BDS and RFS added in combined cabinet, with remote CBTS or MBTS-RFS added MIX Extend Mode through fiber connection, to support 24 carrier sectors for EV-DO or nearly 48 carrier sectors for 1X Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 48: Ls Mode

    EV-DO service. Fig. 14 shows the slot diagram. . 1 4 B T S B L S M O A R D A Y O U T I N O D E Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 49: Rs Mode

    1X service, or 4-carrier 3-sector for 1X + EV-DO. (In this mode, the BDS supports only 12 carrier sectors to deliver pure EV-DO service. That’s why the LS mode is more preferable for pure EV-DO service.) Confidential and Proprietary Information of ZTE CORPORATION...
  • Page 50 Fig. 16 shows the board layout in LEA mode. . 1 6 L E A M O D E RF combined cabnet alternate cable RF combined cabnet alternate cable ‘BASE-RF’ optical fiber RF combined cabnet alternate cable Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 51: Leb Mode

    Fig. 17 shows the board layout in LEA mode. . 1 7 L E B M O D E RF combined cabnet alternate cable RF combined cabnet alternate cable BASE cascade cable RF combined cabnet alternate cable Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 52: Re Mode

    BTS, this mode provides a capacity of 12 carrier sectors to deliver pure EV-DO service and 24 carrier sectors to deliver pure 1X service. See below for the configuration. . 1 8 R E M O D E RRFS RRFS RRFS Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 53: Me Mode

    SNM: optional, usually not needed. CHM: configured according to the number of carriers. CHM0: As one CHM0 provides 256 CEs for 1X service, the number of CHM0 needed is k/256 (k is the total traffic erl). Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 54: Rfs Configuration

    PWS Configuration The primary power shelf can be omitted if the –48 VDC is ready on site. The primary power shelf needs to be prepared if there is only 220 V/110VAC ready on site. Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 55: Technical Indices

    C h a p t e r Technical Indices In this chapter, you will learn about: Environment indices of the BTS system Performance indices (parameter requirements) of the functional components of the BTS system Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 56: Environment Indices

    Temperature and humidity values are measured 2m above floor and 0.4m in front of equipment that has no fender at the front or back. By “short-term” it means less than continuous 48 hours or less than cumulative 15 days in a year. Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 57: Table 5 Bts Power Consumption

    -48 V Approx. 4400 W Approx. 4500 W 3-carrier 6-sector LPA, 40 W -48 V Approx. 4500 W Approx. 4600 W 4-carrier 6-sector LPA, 40 W -48 V Approx. 4500 W Approx. 4700 W Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 58: Performance Indices

    E C E I V E R N D E X A T Z A N D Working 800 MHz, 450 MHz and 850 MHz bands Channel 1.23 MHz(800 MHz), 1.25 MHz (450 MHz, 850 MHz) bandwidth Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 59: Table 7 Transmitter Index At 800 Mhz, 450 Mhz And 850 Mhz

    1.23 MHz (800 MHz), 1.25 MHz (450 MHz, 850 MHz) Tx modulation Quadrature modulation < -45 dBc @±750 kHz offset center freq (RBW 30 Conductive kHz) emissive spurious transmission < -60 dBc @±1.98 MHz offset center freq(RBW Confidential and Proprietary Information of ZTE CORPORATION...
  • Page 60 Ratio of pilot power / total power ≤ ±0.5 dB of the Pilot power configured value Rated output power LPA: 40 W; DPA: 40 W /80 W of amplifier Output linear > 30 dB dynamic range RF (Tx) front end < 1.50 VSWR Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 61: Specs Of 1.9 Ghz And 2.1Ghz

    < -45 dBc @±885 kHz offset center freq Conductive emissive (RBW 30 kHz) spurious transmission < -55 dBc @±1.98MHz offset center freq suppression (RBW 30 kHz) < -13 dBm @±2.75MHz offset center freq Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 62: Clock

    Frequency benchmark: The accuracy of frequency 10 MHz is better than 10 in GPS locked status and is better than 10 in the holdover status. The temperature variation is required to be less than ±0.5 ×10 2. Clock Synchronization Source Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 63: Noise

    3. Clock System Performance The frequency difference is less than 0.05 ppm, and phase difference less than 10 us. Noise The ambient noise of BTS is no greater than 75dBA. Confidential and Proprietary Information of ZTE CORPORATION...
  • Page 64 ZXC10 CBTS (V1.0)Technical Manual This page is intentionally blank. Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 65: Appendix

    Backplane of Baseband Digital Subsystem BTS Baseband Subsystem BTS Communication Subsystem Baseband Digital Module Baseband Digital System BGPS Backplane of GPS BDS Interface Module BLPA Backplane of LPA BDS Power Distribute BPWS Backplane of PWS Confidential and Proprietary Information of ZTE CORPORATION...
  • Page 66 DS-CDMA Direct-Sequence Code Division Multiple Address Data Service Module Duplexer Electromagnetic Compatibility Network Element Mediation Function Electromagnetic interference electromagnetic susceptibility Full duplex Frequency Division Duplex FDMA Frequency Division Multiple Access GPS Control Module Confidential and Proprietary Information of ZTE CORPORATION...
  • Page 67 Optical Interface Module Operation Maintenance Centre Operation Maintenance Function Operation Maintenance Interface Operation Maintenance Module Operating Systems Subsystem Orthogonal Transmit Diversity Power Amplifier Packet Control Function Paging Channel PDSN Packet Data Service Node Confidential and Proprietary Information of ZTE CORPORATION...
  • Page 68 Signaling System No.7 Transmission Control Protocol TCP/IP Transmission Control Protocol/Internet Protocol TD-CDMA Time Division-Code Division Multiple Access Time Division Duplex TDMA Time Division Multiple Address Time of Date Transmitter and Receiver Transmit Transmitter Board Confidential and Proprietary Information of ZTE CORPORATION...
  • Page 69 Micro Base Transceiver Station ZXC10 MGWB c d m a 2 0 0 0 Media Gateway) ZXC10 PBTS cdma2000 Pico Base Transceiver Station ZXC10 PWSB cdma2000 Power System ZXC10 RFSB cdma2000 Radio Frequency System Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 71: Figures

    Fig. 13 BSS Networking ................46 Fig. 14 BTS Board Layout in LS Mode ............48 Fig. 15 RS Mode..................49 Fig. 16 LEA Mode ..................50 Fig. 17 LEB Mode ..................51 Fig. 18 RE Mode..................52 Fig. 19 ME Mode ..................53 Confidential and Proprietary Information of ZTE CORPORATION...
  • Page 72 ZXC10 CBTS (V1.0)Technical Manual This page is intentionally blank. Confidential and Proprietary Information of ZTE CORPORATION...

  • Page 73: Tables

    Table 6 Receiver Index at 800 MHz, 450 MHz and 850 MHz ......58 Table 7 Transmitter Index at 800 MHz, 450 MHz and 850 MHz......59 Table 8 Receiver Index at 1.9 GHz and 2.1GHz..........61 Table 9 Transmitter Index at 1.9 GHz and 2.1GHz .........61 Confidential and Proprietary Information of ZTE CORPORATION...

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