Company Name Samsung Telecommunication America FCC ID : NP8-SCBS-319L Work Order Number APPENDIX J: USER'S MANUSAL
SCBS-319L BTS SYSTEM DESCRIPTION EPBD-000776 ED 00 1999. 11.
Copyright Samsung Electronics Co., Ltd. All Rights Reserved This manual contains the information, which is proprietary to Samsung Electronics Co.Ltd. and is protected by copyright. No information contained here may be copied, translated, transcribed or duplicated by any form without the prior written consent of Samsung. Samsung reserves the right to change information contained in this manual for the system improvement and other technical reasons without prior notice.
TABLE OF CONTENTS INTRODUCTION Document Overview..................................................................................................... III Intended Audience ....................................................................................................... III Document Content & Organization ................................................................................ III CHAPTER 1. System Overview 1 CDMA Network.......................................................................
Table of Contents SCBS-319L System Description / ED 00 ACRONYMS GLOSSARY A ~ I ......................................................................................................................... A-1 L ~ T......................................................................................................................... A-2 LIST OF FIGURES Figure 1.1 Samsung CDMA Network...........................................................................1-3 Figure 1.2 SCBS-319L Configuration ............
INTRODUCTION Document Overview This description provides an overview of SCBS-319L that functions as a Base station Transceiver System in the CDMA network and a general description of hardware and software architecture, functions and specifications. Intended Audience This document is focussed on system operators and technical personnel who deal with SCBS-319L. Document Content & Organization This document is organized as follows: CHAPTER 1.
Intorduction SCBS-319L System Description / ED 00 This page intentionally left blank Page IV © Samsung Electronics Co., Ltd.
CHAPTER 1 System Overview 1 CDMA Network The main objective of the CDMA network is to provide service for roaming Mobile Station(MS) and to meet the requirements of CDMA subscribers by interconnecting the subsystems of the network. The CDMA Network consists of the following subsystems.
System Overview SCBS-319L System Description / ED 00 Home Location Register (HLR) HLR is a database that stores and manages information of all subscribers in the CDMA system and location information of all mobile stations. It is a perfect fault-tolerant system that provides realtime database system and that services by interworking with MSC, SMS center, NMC and the customer center.
SCBS-319L System Description / ED 00 System Overview MSC HLR PSTN BSC BSC BTS INTERNET BTS MS BTS BTS MS Figure 1.1 Samsung CDMA Network ©1999 Samsung Electronics Co., Ltd.
System Overview 2 SCBS-319L System Description / ED 00 Specification of SCBS-319L SCBS-319L is a high-capacity BTS that services CDMA calls at the 1900MHz band. Frequency sector can be divided into maximum three, where, each section can use maximum eight frequency bands. Also, as it provides the service to use three sectors and two frequecy allocation(FA) as the basic configuration, it is suitable for small-capacity area. SCBS-319L is installed indoors. 2.
SCBS-319L System Description / ED 00 2.2 System Overview Interface Specifications SCBS-319L is basically connected with BSC and Mobile Station. Besides, SCBS-319L can be supported with Base Station Management (BSM) by telephone line for maintenance. And it can interface with additional equipment such as optical repeater and Maintenance and Administration Processor (MAP). Interface with BSC SCBS-319L transmits 13K QCELP DATA to BSC through T1 or E1 link. For T1, it provides a transmission speed of 1.
System Overview 2.3 SCBS-319L System Description / ED 00 System Specifications The system specifications of SCBS-319L are as follows. Power Classification Specifications System DC supply Voltage +24V ~ +28V AC Input Voltage Single Phase 220V, 3Phase 380V ± 10% (Designate upon the purchase) AC Input Frequency 50/60 Hz DC current Maximum 60ADC Efficiency > 0.
SCBS-319L System Description / ED 00 3 System Overview Features of SCBS-319L The features of SCBS-319L are as follows: Diverse Services SCBS-319L provides various services of IS-95B except basic call processing. SCBS-319L provides services making changes to software and without extending any modifications on hardware. High Speed Data Services SCBS-319L provides high-speed data services of maximum 115.2Kbps by connecting with IWF through BSC.
System Overview SCBS-319L System Description / ED 00 Capacity and Expansion The board accommodates 32 channels on SCBS-319L. The channels are not assigned for sector or frequency bandwidth and thus allowing highly scalable capacity and greater utilization efficiency. Also, SCBS-319L capacity can be increased by adding racks. And the capacity can be modified by selecting omni mode or sector mode within the same hardware specifications.
SCBS-319L System Description / ED 00 4 System Overview Reliability The system reliability is defined by the Failure Rate(FR) and the Mean Time Between Failure (MTBF). If SCBS-319L services 3 frequency bands with 3 sertors, FR and MTBF are as follows: FR MTBF 19.60 times 51020.24 hours(about 5.82 years) 6 Note) 1. Failure Rate is figured on the basis on 10 hours. 2. MTBF = 1/FR × 10 6 3. Reliability calculation on the basis of : Engineering Reliability Fundamentals and Applications, R.
System Overview SCBS-319L System Description / ED 00 5 System Configuration 5.1 Basic Configuration SCBS-319L can provide basic services with a base rack and the racks can be extended to enlarge capacity. SCBS-319L is configured as below. ! BSBR (BTS Standard Base Rack) ! BSER (BTS Standard Expansion Rack) BSBR (BTS Standard Base Rack) BSBR is the base rack to configure BTS. It communicates with BSC or controls BSER by common control block.
SCBS-319L System Description / ED 00 5.2 System Overview SCBS-319L Configuration The configuration diagrams of SCBS-319L is as follows. BSBR BSER BSER BSER CCB CPB CPB CPB CPB BLANK HPAU HPAU HPAU RFB RFB RFB AFCU HPAU AFCU RXDU BLANK BSBR BSER #1 RXDU BSER #2 Figure 1.2 SCBS-319L Rack Configuration © Samsung Electronics Co., Ltd.
System Overview 6 SCBS-319L System Description / ED 00 Functional Blocks The basic functional flow of SCBS-319L is as follows.
SCBS-319L System Description / ED 00 System Overview Initialization Procedure SCBS-319L initializes system by loading various software from CCP of BSC. General initialization flow: " BSM initializes CCP as passing by GCIN, LCIN. # CCP initialize sub processors with downloaded software from BSM, and it downloads required software for SCBS-319L from BCIN to BCP.
System Overview SCBS-319L System Description / ED 00 Transmitting signal processing SCBS-319L modifies QCELP packets transferred from BSC to baseband CDMA signals. These signal are converted into analog waveform (D/A conversion) and amplified to transmitting frequency of 1900MHz band. If it has more than two-frequency band, it is filtering to other signal except 1.25MHz band to merge signals and eradicate noise.
CHAPTER 2 System Architecture 1 Hardware Architecture 1.1 Basic Architecture The functional Hardware of SCBS-319L is of 3 modules. Control Signal SCBS – 319L Traffic signal CCB BSC CPB RFB Antenna MS Figure 2.1 Basic Structure of Hardware Common Control Block (CCB) Common control block(CCB) operates and maintains BTS. Also, it connects BTS and BSC, and provides communication path among each processor of BTS. It generates system clocks and distributes them to the other blocks.
System Architecture SCBS-319L System Description / ED 00 RF Block (RFB) RF block (RFB) filters receiving/transmitting signal band between antenna and CPB, and amplifies signals. It filters required bands from signals transmitted from CPB, and merge frequencies then sends them to antenna. It filters required bands from signals received by antenna, and distributes signals to CPB after amplifying them.
SCBS-319L System Description / ED 00 System Architecture duplexed Packet Clock Tx/Rx Signal Bus (Tx/Rx) × 6 RFB Optical Repeater AFCU Rx × 6 (or 12) Remote RF Unit Tx × 3 Optical Cable Option RXDU Optical Combiner Unit HPAU Tx × 6 CPB TRXA TRXA Rx × 6 (or 12) HCEA Tx × 6 / R x × 6 Tx × 6 / R x × 12 SCTA Alarm Fault SACA CCB BSC E1/T1 INTA MACA PSTN Fault •• GPS GCRA BNCA BMDA Ethernet BNCA MACA GCRA HCEA SCTA HPAU RXDU BTS and Node Control Assembly Master Alarm Control
System Architecture 1.2 SCBS-319L System Description / ED 00 Common Control Block 1.2.1 Functions Main functions and features of CCB are as follows. ! It provides communication path between BTS and BSC by connecting to LCIN. ! It provides communication path between each processor within BTS. ! It assigns BTS resource and manages the status. ! It detects fault within BTS and reports it to BSC. ! It tests BTS.
SCBS-319L System Description / ED 00 System Architecture 1.2.2 Architecture CCB is shown below. CCB Figure 2.4 Board Configuration of CCB Board Name Quantity BNCA 2 Basic call processing, Controls operation and status INTA 2 Interconnects BSC and BTS, and provides communication path between the blocks in BTS. MACA 1 Collects and controls fault of BTS.
System Architecture SCBS-319L System Description / ED 00 BNCA, INTA and GCRA are duplicated for reliability, SDP-A is duplicated with SDP-A to be mounted in CPB. Below is the detailed description of BNCA, INTA, MACA, BMDA and GCRA boards. BTS and Node Control Assembly (BNCA) BNCA is the main processor that controls status of overall hardware and software of BTS. Then it reports them to BSM. Also, it assigns and controls resources of BTS and processes calls originated from BTS.
SCBS-319L System Description / ED 00 System Architecture BTS Maintenance and Diagnostic Assembly (BMDA) BMDA tests operation status of SCBS-319L. This test is performed regularly within BTS or irregularly upon the request of the operator. Also BMDA performs BTS control test such as checking transmitting/receiving antenna and receiving path transmitting output measure function etc. If you connect PC to BMDA, you can use MAP.
System Architecture 1.3 SCBS-319L System Description / ED 00 Channel Processing Block 1.3.1 Functions CPB performs forward traffic as shown below. ! It receives packet signals from BSC through INTA mounted in CCB ! It modulates CDMA and processes channels. ! It modulates a digital signal into an analog signal. ! It modulates QPSK and upconverts frequency. ! It transfers CDMA signal to HPAU of the RFB. It performs the following in the reverse traffic. ! It receives CDMA signal from AFCU mounted in RFB.
SCBS-319L System Description / ED 00 System Architecture Call processing flow of CPB is as follows.
System Architecture SCBS-319L System Description / ED 00 1.3.2 Architecture CPB is shown below. CPB Figure 2.7 Board configuration of CPB Page 2-10 Board Name Quantity Functions HCEA 6 Modulation/demodulation of data, accommodate 32 channels TRXA 6 Convert baseband signal and RF band signal SCTA 2 Change analog and digital, control HCEA and TRXA SACA 1 Collect faults and report to MACA SDP-A 1 Power supply © Samsung Electronics Co., Ltd.
SCBS-319L System Description / ED 00 System Architecture HCEA and TRXA can be mounted maximum 6 when it includes capacity for W-CDMA WLL. SCTA is duplicated for reliability, and SCP-A is duplicated with SDP-A mounted in CCB. This is detailed description for HCEA, SCTA, TRXA and SACA board. High-density Channel Elements Assembly (HCEA) HCEA performs CDMA signal modulation/demodulation and channel processing between SCTA and INTA.
System Architecture SCBS-319L System Description / ED 00 Transceiver Assembly (TRXA) TRXA performs QPSK modulation on baseband I/Q signal to be received through SCTA then upconverts 1900MHz band. After eliminating noise excpt 1.25MHz band from this signal, it transfers it to HPAU mounted in RFB. The two received signals transferred from TRXA due to antenna diversity.
SCBS-319L System Description / ED 00 1.4 System Architecture RF Block 1.4.1 Functions Performances of RFB are as follows. ! Power amplification of RF signal ! RF signal combination ! Automatic Gain Control(AGC) of receiving RF signal ! De-multiplexing of RF signal for performance diagnostic Optical combiner unit replaces parts of RFB so that it can combine with optical repeater in SCBS319L. Optical repeater is used to enlarge the coverage of BTS and to resolve radio shadow area.
System Architecture SCBS-319L System Description / ED 00 Call processing flow of RFB is as below. CPB TRXA RFB HPAU HPAU HPAU HPAU HPAU HPAU HPAU HPAU Signal Distribution HPAU HPAU HPAU Power Amp. AFCU AFCU AFCU AFCU AFCU AFCU Channel Filtering Signal Distribution Power Synthesization Low-Noise Amplification Band Filtering Band Filtering RXDU Antenna Figure 2.9 Call processing flow of RFB Page 2-14 © Samsung Electronics Co., Ltd.
SCBS-319L System Description / ED 00 System Architecture 1.4.2 Architecture RFB is inserted in diferent format for different configurations. RFB BSBR BSER #1 BSER #2 Figure 2.10 Board configuration of RFB © Samsung Electronics Co., Ltd.
System Architecture Board Name HPAU SCBS-319L System Description / ED 00 Quantity Functions BSBR BSER#1 BSER#2 6 12 6 Power amplification of Rx signal AFCU 6 - - Tx Signal : channel filtering, power synthesization, band filtering Rx Signal : band filtering, low-noise amplification, signal distribution RXDU - 6 6 Distribution of Rx signal to TRXA The quantity of HPAU is the same as that of HCEA and TRXA in the CPB. AFCU is connected right under the antenna, and equipped only I the base rack.
SCBS-319L System Description / ED 00 System Architecture amplification of the filtered signal, it removes signals other than 1.25MHz bandwidth used by the relevant channel. When the base rack only is installed, AFCU distributes th signal immediately to TRXA of the channel pocessing block, while when an expansion rack is installed, RXDU receives the signal to distribute to TRXA. SCBS-319L has two antennae per sector to give diversity effects to Rx signal.
System Architecture 1.5 SCBS-319L System Description / ED 00 Additional Devices 1.5.1 Optical Repeater Optical repeater is used for enlarging BTS coverage and to resolve the power loss in radio shadow area. It is configured with optical combiner unit and remote RF unit. And optical combiner unit and remote RF unit are connected by optical fiber cables. MACA controls fault of optical repeater.
SCBS-319L System Description / ED 00 1.5.2 System Architecture Maintenance and Administration Processor (MAP) MAP is a maintenance program installed on PC, and is directed to BMDA to CCB. Because MAP supports off-line functions unless BSM, it is easy to use for various tests during BTS installation or maintenance on BTS under operation. All functions of MAP are displayed in GUI. MAP supports the performances stated below when BTS is in normal condition.
System Architecture SCBS-319L System Description / ED 00 2 Software Architecture 2.1 Basic Architecture The software structure of SCBS-319L is shown below. BNCA BCIN BSC BCP BCOB BRAB PLB BCMB BMEB BRMB BSHB BFMB BDIB HIPB BMDA MACA SCTA BTP BAP TCIP BTPB BAPB CIPB TRCB CCEB Antenna Figure 2.11 Software structure of SCBS-319L 2.1.1 Processor Configuration There are different processors as mentioned below according to software requirements loaded on– board.
SCBS-319L System Description / ED 00 System Architecture BTS Alarm control Processor (BAP) BAP is a processor driven by MACA of CCB. BAP collects various faults information that is detected in BSC and reports to the operator. Transceiver and Channel element Interface Processor (TCIP) TCIP is a processor to be driven by SCTA. TCIP takes charge of operation and maintenance of HCEA and TRXA, and controls channel element. Also, it takes charges of data communication between CCB and CPB. 2.1.
System Architecture SCBS-319L System Description / ED 00 BTS Resource Management Block (BRMB) BRMB is a configuration management block operated in BCP and performs the following functions.
SCBS-319L System Description / ED 00 System Architecture BTS Test Processor Block (BTPB) BTPB is a test and diagnostic block operated in BTP, it performs the following functions upon request of BDIB.
System Architecture 2.2 SCBS-319L System Description / ED 00 Functions of Software The ! ! ! functions of software are as follows. Call processing System Operation System Maintenance 2.2.1 Call Processing Call processing software provides various call services to mobile subscribers as interworking software of BTS and MSC. The major functions of call processing are as follows.
SCBS-319L System Description / ED 00 System Architecture MSC BCP BCIN BSC BCOB BRAB TCIP CIPB TRCB RFB CCEB Antenna MS Figure 2.12 Software interworking for call processing © Samsung Electronics Co., Ltd.
System Architecture SCBS-319L System Description / ED 00 2.2.2 Operation Software Operation software of SCBS-319L initializes system processor data and manages system configuration and resources for normal system operation. The major functions related to system operation are as follows. System Loading System loading software initialize system by downloading various software from CCP of BTS.
SCBS-319L System Description / ED 00 System Architecture 2.2.3 Maintenance Software Maintenance Software of SCBS-319L manages system state and fault and transfers relevant information to BTS. The major functions related to system operation are as follows. State Management State management software manages states of various processors, links, devices and call processing resources of BTS. Also, it provides information of various states to BSM or MAP.
System Architecture SCBS-319L System Description / ED 00 This page intentionally left blank Page 2-28 © Samsung Electronics Co., Ltd.
ACRONYMS GLOSSARY A ADC AFCU Analog-to-Digital Converter Antenna Front end & Combiner Unit D DC Directional Coupler DDSP Demodulator Digital Signal Processor DPRAM Dual Port RAM B BAP BAPB BATA BCOB BCMB BCP BCPB BDIB BFMB BMDA BMEB BNCA BSC BSM BRAB BRMB BSHB BTP BTS BTS Alarm control Processor BTS Alarm Processor Block BTS Antenna Test Assembly BCP Call Control BTS Configuration Management Block BTS Control and Maintenance Processor BTS Control Processor Block BTS Diagnostic Block BTS Fault Managemen
Acronyms Glossary SCBS-319L System Description / ED 00 L LNA Low Noise Amplifier M MACA MAP MSC MTBF TBPF TCIP TFM TOD TRXA TTL Transmit Band Pass Filter Transceiver and Channel element Interface Processor Tower-mounted Front-end Module Time Of Day Transceiver Assembly Transistor-Transistor Logic Master Alarm Control Assembly Maintenance and Administration Processor Mobile Switching Center Mean Time Between Failure P PACA PC PLB PLD Priority Access and Channel Assignment Personal Computer Processor
SCBS-319L BTS SYSTEM DESCRIPTION ©1999 Samsung Electronics Co., Ltd. All rights reserved The copy right of this description belongs to Samsung Electronics Co., Ltd.. All or part of this description may not be reproduced or transferred without prior written consent of Samsung. Contents of this description us subject to change for enhancements. Samsung, is the trademark of Samsung. Other registered trademarks mentioned in this description belong to companies concerned.
Acronyms Glossary SCBS-319L System Description / ED 00 *An Appendix - Operation Frequency - RF_block diagram Page A-2 © Samsung Electronics Co., Ltd.
SCBS-319L ••• ••• / ED 01 Abbreviation * Operation Frequency A Band CDMA Channel Numbers and Corresponding Frequencies 1 2 3 4 5 T x. Frequency CH num . 1 1931.25 25 2 1932.5 3 6 7 8 9 T x. Frequency CH num . 7 1938.75 175 50 8 1940 200 1933.75 75 9 1941.25 225 4 1935 100 10 1942.5 250 5 1936.25 125 11 1943.75 275 6 1937.5 150 ©1999 Samsung Electronics Co., Ltd.
Acronyms Glossary SCBS-319L System Description / ED 00 D Band CDMA Channel Numbers and Corresponding Frequencies 1 Page A-4 2 3 T x. Frequency CH num . 1 1946.25 325 2 1947.5 350 3 1948.75 375 © Samsung Electronics Co., Ltd.
SCBS-319L ••• ••• / ED 01 ©1999 Samsung Electronics Co., Ltd.
Acronyms Glossary SCBS-319L System Description / ED 00 B Band CDMA Channel Numbers and Corresponding Frequencies 1 Page A-6 2 3 4 5 T x. Frequency CH num . 1 1951.25 425 2 1952.5 3 6 7 8 9 10 T x. Frequency CH num . 7 1958.75 575 450 8 1960 600 1953.75 475 9 1961.25 625 4 1955 500 10 1962.5 650 5 1956.25 525 11 1963.75 675 6 1957.5 550 11 © Samsung Electronics Co., Ltd.
SCBS-319L ••• ••• / ED 01 Abbreviation E Band CDMA Channel Numbers and Corresponding Frequencies 1 2 3 T x. Frequency CH num . 1 1966.25 725 2 1967.5 750 3 1968.75 775 ©1999 Samsung Electronics Co., Ltd.
Acronyms Glossary SCBS-319L System Description / ED 00 F Band CDMA Channel Numbers and Corresponding Frequencies 1 Page A-8 2 3 T x. Frequency CH num . 1 1971.25 825 2 1972.5 850 3 1973.75 875 © Samsung Electronics Co., Ltd.
SCBS-319L ••• ••• / ED 01 Abbreviation F Band CDMA Channel Numbers and Corresponding Frequencies 1 2 3 4 5 7 6 T x. Frequency CH num . 1 1976.25 925 2 1977.5 3 8 9 10 11 T x. Frequency CH num . 7 1983.75 1075 950 8 1985 1100 1978.75 975 9 1986.25 1125 4 1980 1000 10 1987.5 1150 5 1981.25 1025 11 1988.75 1175 6 1982.5 1050 ©1999 Samsung Electronics Co., Ltd.
* RF_block diagram 1. TRXA Block Diagram 1) UPCB BLOCK Diagram Modulator I+ I− − VVA Com.
Acronyms Glossary SCBS-319L System Description / ED 00 2)DWCB BLOCK Diagram RF Input Main_Path From AFEB To SCTA Demodulator Divider MIXER VVA AMP LPF LNA BPF AMP AMP From DAC RF Input Diversity Path From AFEB SAW AMP To ADC AGC AMP Detector Rx RF LO SAW AGC Control From SCTA To ADC Divider Divider Same with Upper Block Page A-2 I+ IDiff. AMP Q+ Q- © Samsung Electronics Co., Ltd.
SCBS-319L ••• ••• / ED 01 Abbreviation 2.
Acronyms Glossary SCBS-319L System Description / ED 00 3.
SCBS-319L ••• ••• / ED 01 Abbreviation 4. HPAU Block Diagram This Block Diagrm describes the High Power Amplifier Unit (HPAU) circuit used for PCS (1900MHz) INPUT 10dB ATT 27V F WD PDRB PDIV PMAB PCOM REV L G Alarm ATT 5V 12V 27V RF SIGNAL 27V DC PPDB TE MP -3dB S/W 27V 27 V VMCP ©1999 Samsung Electronics Co., Ltd.
